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| <h1>Source code for airflow.models.dag</h1><div class="highlight"><pre> |
| <span></span><span class="c1"># -*- coding: utf-8 -*-</span> |
| <span class="c1">#</span> |
| <span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="c1"># or more contributor license agreements. See the NOTICE file</span> |
| <span class="c1"># distributed with this work for additional information</span> |
| <span class="c1"># regarding copyright ownership. The ASF licenses this file</span> |
| <span class="c1"># to you under the Apache License, Version 2.0 (the</span> |
| <span class="c1"># "License"); you may not use this file except in compliance</span> |
| <span class="c1"># with the License. You may obtain a copy of the License at</span> |
| <span class="c1">#</span> |
| <span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="c1">#</span> |
| <span class="c1"># Unless required by applicable law or agreed to in writing,</span> |
| <span class="c1"># software distributed under the License is distributed on an</span> |
| <span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span> |
| <span class="c1"># KIND, either express or implied. See the License for the</span> |
| <span class="c1"># specific language governing permissions and limitations</span> |
| <span class="c1"># under the License.</span> |
| |
| <span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">print_function</span> |
| |
| <span class="kn">import</span> <span class="nn">copy</span> |
| <span class="kn">import</span> <span class="nn">functools</span> |
| <span class="kn">import</span> <span class="nn">os</span> |
| <span class="kn">import</span> <span class="nn">pickle</span> |
| <span class="kn">import</span> <span class="nn">re</span> |
| <span class="kn">import</span> <span class="nn">sys</span> |
| <span class="kn">import</span> <span class="nn">traceback</span> |
| <span class="kn">import</span> <span class="nn">warnings</span> |
| <span class="kn">from</span> <span class="nn">collections</span> <span class="k">import</span> <span class="n">OrderedDict</span><span class="p">,</span> <span class="n">defaultdict</span> |
| <span class="kn">from</span> <span class="nn">datetime</span> <span class="k">import</span> <span class="n">timedelta</span><span class="p">,</span> <span class="n">datetime</span> |
| <span class="kn">from</span> <span class="nn">typing</span> <span class="k">import</span> <span class="n">TYPE_CHECKING</span><span class="p">,</span> <span class="n">Callable</span><span class="p">,</span> <span class="n">Dict</span><span class="p">,</span> <span class="n">FrozenSet</span><span class="p">,</span> <span class="n">Iterable</span><span class="p">,</span> <span class="n">List</span><span class="p">,</span> <span class="n">Optional</span><span class="p">,</span> <span class="n">Type</span><span class="p">,</span> <span class="n">Union</span> |
| |
| <span class="kn">import</span> <span class="nn">jinja2</span> |
| <span class="kn">import</span> <span class="nn">pendulum</span> |
| <span class="kn">import</span> <span class="nn">six</span> |
| <span class="kn">from</span> <span class="nn">croniter</span> <span class="k">import</span> <span class="n">croniter</span> |
| <span class="kn">from</span> <span class="nn">dateutil.relativedelta</span> <span class="k">import</span> <span class="n">relativedelta</span> |
| <span class="kn">from</span> <span class="nn">future.standard_library</span> <span class="k">import</span> <span class="n">install_aliases</span> |
| <span class="kn">from</span> <span class="nn">sqlalchemy</span> <span class="k">import</span> <span class="n">Boolean</span><span class="p">,</span> <span class="n">Column</span><span class="p">,</span> <span class="n">ForeignKey</span><span class="p">,</span> <span class="n">Index</span><span class="p">,</span> <span class="n">Integer</span><span class="p">,</span> <span class="n">String</span><span class="p">,</span> <span class="n">Text</span><span class="p">,</span> <span class="n">func</span><span class="p">,</span> <span class="n">or_</span> |
| <span class="kn">from</span> <span class="nn">sqlalchemy.orm</span> <span class="k">import</span> <span class="n">backref</span><span class="p">,</span> <span class="n">relationship</span> |
| |
| <span class="kn">from</span> <span class="nn">airflow</span> <span class="k">import</span> <span class="n">settings</span><span class="p">,</span> <span class="n">utils</span> |
| <span class="kn">from</span> <span class="nn">airflow.configuration</span> <span class="k">import</span> <span class="n">conf</span> |
| <span class="kn">from</span> <span class="nn">airflow.dag.base_dag</span> <span class="k">import</span> <span class="n">BaseDag</span> |
| <span class="kn">from</span> <span class="nn">airflow.executors</span> <span class="k">import</span> <span class="n">LocalExecutor</span><span class="p">,</span> <span class="n">get_default_executor</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.base</span> <span class="k">import</span> <span class="n">Base</span><span class="p">,</span> <span class="n">ID_LEN</span> |
| <span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="k">import</span> <span class="p">(</span> |
| <span class="n">AirflowDagCycleException</span><span class="p">,</span> <span class="n">AirflowException</span><span class="p">,</span> <span class="n">DagNotFound</span><span class="p">,</span> <span class="n">TaskNotFound</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.dagbag</span> <span class="k">import</span> <span class="n">DagBag</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.dagpickle</span> <span class="k">import</span> <span class="n">DagPickle</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.dagrun</span> <span class="k">import</span> <span class="n">DagRun</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.taskinstance</span> <span class="k">import</span> <span class="n">TaskInstance</span><span class="p">,</span> <span class="n">clear_task_instances</span> |
| <span class="kn">from</span> <span class="nn">airflow.settings</span> <span class="k">import</span> <span class="n">STORE_SERIALIZED_DAGS</span><span class="p">,</span> <span class="n">MIN_SERIALIZED_DAG_UPDATE_INTERVAL</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils</span> <span class="k">import</span> <span class="n">timezone</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.dag_processing</span> <span class="k">import</span> <span class="n">correct_maybe_zipped</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.dates</span> <span class="k">import</span> <span class="n">cron_presets</span><span class="p">,</span> <span class="n">date_range</span> <span class="k">as</span> <span class="n">utils_date_range</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.db</span> <span class="k">import</span> <span class="n">provide_session</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.helpers</span> <span class="k">import</span> <span class="n">validate_key</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.log.logging_mixin</span> <span class="k">import</span> <span class="n">LoggingMixin</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.sqlalchemy</span> <span class="k">import</span> <span class="n">UtcDateTime</span><span class="p">,</span> <span class="n">Interval</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.state</span> <span class="k">import</span> <span class="n">State</span> |
| |
| <span class="k">if</span> <span class="n">TYPE_CHECKING</span><span class="p">:</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.baseoperator</span> <span class="k">import</span> <span class="n">BaseOperator</span> <span class="c1"># Avoid circular dependency</span> |
| |
| <span class="n">install_aliases</span><span class="p">()</span> |
| |
| <div class="viewcode-block" id="ScheduleInterval"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.ScheduleInterval">[docs]</a><span class="n">ScheduleInterval</span> <span class="o">=</span> <span class="n">Union</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">timedelta</span><span class="p">,</span> <span class="n">relativedelta</span><span class="p">]</span></div> |
| |
| |
| <div class="viewcode-block" id="get_last_dagrun"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.get_last_dagrun">[docs]</a><span class="k">def</span> <span class="nf">get_last_dagrun</span><span class="p">(</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">session</span><span class="p">,</span> <span class="n">include_externally_triggered</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns the last dag run for a dag, None if there was none.</span> |
| <span class="sd"> Last dag run can be any type of run eg. scheduled or backfilled.</span> |
| <span class="sd"> Overridden DagRuns are ignored.</span> |
| <span class="sd"> """</span> |
| <span class="n">DR</span> <span class="o">=</span> <span class="n">DagRun</span> |
| <span class="n">query</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">DR</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DR</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="n">dag_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">include_externally_triggered</span><span class="p">:</span> |
| <span class="n">query</span> <span class="o">=</span> <span class="n">query</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DR</span><span class="o">.</span><span class="n">external_trigger</span> <span class="o">==</span> <span class="kc">False</span><span class="p">)</span> <span class="c1"># noqa</span> |
| <span class="n">query</span> <span class="o">=</span> <span class="n">query</span><span class="o">.</span><span class="n">order_by</span><span class="p">(</span><span class="n">DR</span><span class="o">.</span><span class="n">execution_date</span><span class="o">.</span><span class="n">desc</span><span class="p">())</span> |
| <span class="k">return</span> <span class="n">query</span><span class="o">.</span><span class="n">first</span><span class="p">()</span></div> |
| |
| |
| <div class="viewcode-block" id="DAG"><a class="viewcode-back" href="../../../_api/airflow/models/index.html#airflow.models.dag.DAG">[docs]</a><span class="nd">@functools</span><span class="o">.</span><span class="n">total_ordering</span> |
| <span class="k">class</span> <span class="nc">DAG</span><span class="p">(</span><span class="n">BaseDag</span><span class="p">,</span> <span class="n">LoggingMixin</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> A dag (directed acyclic graph) is a collection of tasks with directional</span> |
| <span class="sd"> dependencies. A dag also has a schedule, a start date and an end date</span> |
| <span class="sd"> (optional). For each schedule, (say daily or hourly), the DAG needs to run</span> |
| <span class="sd"> each individual tasks as their dependencies are met. Certain tasks have</span> |
| <span class="sd"> the property of depending on their own past, meaning that they can't run</span> |
| <span class="sd"> until their previous schedule (and upstream tasks) are completed.</span> |
| |
| <span class="sd"> DAGs essentially act as namespaces for tasks. A task_id can only be</span> |
| <span class="sd"> added once to a DAG.</span> |
| |
| <span class="sd"> :param dag_id: The id of the DAG</span> |
| <span class="sd"> :type dag_id: str</span> |
| <span class="sd"> :param description: The description for the DAG to e.g. be shown on the webserver</span> |
| <span class="sd"> :type description: str</span> |
| <span class="sd"> :param schedule_interval: Defines how often that DAG runs, this</span> |
| <span class="sd"> timedelta object gets added to your latest task instance's</span> |
| <span class="sd"> execution_date to figure out the next schedule</span> |
| <span class="sd"> :type schedule_interval: datetime.timedelta or</span> |
| <span class="sd"> dateutil.relativedelta.relativedelta or str that acts as a cron</span> |
| <span class="sd"> expression</span> |
| <span class="sd"> :param start_date: The timestamp from which the scheduler will</span> |
| <span class="sd"> attempt to backfill</span> |
| <span class="sd"> :type start_date: datetime.datetime</span> |
| <span class="sd"> :param end_date: A date beyond which your DAG won't run, leave to None</span> |
| <span class="sd"> for open ended scheduling</span> |
| <span class="sd"> :type end_date: datetime.datetime</span> |
| <span class="sd"> :param template_searchpath: This list of folders (non relative)</span> |
| <span class="sd"> defines where jinja will look for your templates. Order matters.</span> |
| <span class="sd"> Note that jinja/airflow includes the path of your DAG file by</span> |
| <span class="sd"> default</span> |
| <span class="sd"> :type template_searchpath: str or list[str]</span> |
| <span class="sd"> :param template_undefined: Template undefined type.</span> |
| <span class="sd"> :type template_undefined: jinja2.Undefined</span> |
| <span class="sd"> :param user_defined_macros: a dictionary of macros that will be exposed</span> |
| <span class="sd"> in your jinja templates. For example, passing ``dict(foo='bar')``</span> |
| <span class="sd"> to this argument allows you to ``{{ foo }}`` in all jinja</span> |
| <span class="sd"> templates related to this DAG. Note that you can pass any</span> |
| <span class="sd"> type of object here.</span> |
| <span class="sd"> :type user_defined_macros: dict</span> |
| <span class="sd"> :param user_defined_filters: a dictionary of filters that will be exposed</span> |
| <span class="sd"> in your jinja templates. For example, passing</span> |
| <span class="sd"> ``dict(hello=lambda name: 'Hello %s' % name)`` to this argument allows</span> |
| <span class="sd"> you to ``{{ 'world' | hello }}`` in all jinja templates related to</span> |
| <span class="sd"> this DAG.</span> |
| <span class="sd"> :type user_defined_filters: dict</span> |
| <span class="sd"> :param default_args: A dictionary of default parameters to be used</span> |
| <span class="sd"> as constructor keyword parameters when initialising operators.</span> |
| <span class="sd"> Note that operators have the same hook, and precede those defined</span> |
| <span class="sd"> here, meaning that if your dict contains `'depends_on_past': True`</span> |
| <span class="sd"> here and `'depends_on_past': False` in the operator's call</span> |
| <span class="sd"> `default_args`, the actual value will be `False`.</span> |
| <span class="sd"> :type default_args: dict</span> |
| <span class="sd"> :param params: a dictionary of DAG level parameters that are made</span> |
| <span class="sd"> accessible in templates, namespaced under `params`. These</span> |
| <span class="sd"> params can be overridden at the task level.</span> |
| <span class="sd"> :type params: dict</span> |
| <span class="sd"> :param concurrency: the number of task instances allowed to run</span> |
| <span class="sd"> concurrently</span> |
| <span class="sd"> :type concurrency: int</span> |
| <span class="sd"> :param max_active_runs: maximum number of active DAG runs, beyond this</span> |
| <span class="sd"> number of DAG runs in a running state, the scheduler won't create</span> |
| <span class="sd"> new active DAG runs</span> |
| <span class="sd"> :type max_active_runs: int</span> |
| <span class="sd"> :param dagrun_timeout: specify how long a DagRun should be up before</span> |
| <span class="sd"> timing out / failing, so that new DagRuns can be created. The timeout</span> |
| <span class="sd"> is only enforced for scheduled DagRuns, and only once the</span> |
| <span class="sd"> # of active DagRuns == max_active_runs.</span> |
| <span class="sd"> :type dagrun_timeout: datetime.timedelta</span> |
| <span class="sd"> :param sla_miss_callback: specify a function to call when reporting SLA</span> |
| <span class="sd"> timeouts.</span> |
| <span class="sd"> :type sla_miss_callback: types.FunctionType</span> |
| <span class="sd"> :param default_view: Specify DAG default view (tree, graph, duration,</span> |
| <span class="sd"> gantt, landing_times)</span> |
| <span class="sd"> :type default_view: str</span> |
| <span class="sd"> :param orientation: Specify DAG orientation in graph view (LR, TB, RL, BT)</span> |
| <span class="sd"> :type orientation: str</span> |
| <span class="sd"> :param catchup: Perform scheduler catchup (or only run latest)? Defaults to True</span> |
| <span class="sd"> :type catchup: bool</span> |
| <span class="sd"> :param on_failure_callback: A function to be called when a DagRun of this dag fails.</span> |
| <span class="sd"> A context dictionary is passed as a single parameter to this function.</span> |
| <span class="sd"> :type on_failure_callback: callable</span> |
| <span class="sd"> :param on_success_callback: Much like the ``on_failure_callback`` except</span> |
| <span class="sd"> that it is executed when the dag succeeds.</span> |
| <span class="sd"> :type on_success_callback: callable</span> |
| <span class="sd"> :param access_control: Specify optional DAG-level permissions, e.g.,</span> |
| <span class="sd"> "{'role1': {'can_dag_read'}, 'role2': {'can_dag_read', 'can_dag_edit'}}"</span> |
| <span class="sd"> :type access_control: dict</span> |
| <span class="sd"> :param is_paused_upon_creation: Specifies if the dag is paused when created for the first time.</span> |
| <span class="sd"> If the dag exists already, this flag will be ignored. If this optional parameter</span> |
| <span class="sd"> is not specified, the global config setting will be used.</span> |
| <span class="sd"> :type is_paused_upon_creation: bool or None</span> |
| <span class="sd"> :param jinja_environment_kwargs: additional configuration options to be passed to Jinja</span> |
| <span class="sd"> ``Environment`` for template rendering</span> |
| |
| <span class="sd"> **Example**: to avoid Jinja from removing a trailing newline from template strings ::</span> |
| |
| <span class="sd"> DAG(dag_id='my-dag',</span> |
| <span class="sd"> jinja_environment_kwargs={</span> |
| <span class="sd"> 'keep_trailing_newline': True,</span> |
| <span class="sd"> # some other jinja2 Environment options here</span> |
| <span class="sd"> }</span> |
| <span class="sd"> )</span> |
| |
| <span class="sd"> **See**: `Jinja Environment documentation</span> |
| <span class="sd"> <https://jinja.palletsprojects.com/en/master/api/#jinja2.Environment>`_</span> |
| |
| <span class="sd"> :type jinja_environment_kwargs: dict</span> |
| <span class="sd"> :param tags: List of tags to help filtering DAGS in the UI.</span> |
| <span class="sd"> :type tags: List[str]</span> |
| <span class="sd"> """</span> |
| |
| <div class="viewcode-block" id="DAG._comps"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG._comps">[docs]</a> <span class="n">_comps</span> <span class="o">=</span> <span class="p">{</span> |
| <span class="s1">'dag_id'</span><span class="p">,</span> |
| <span class="s1">'task_ids'</span><span class="p">,</span> |
| <span class="s1">'parent_dag'</span><span class="p">,</span> |
| <span class="s1">'start_date'</span><span class="p">,</span> |
| <span class="s1">'schedule_interval'</span><span class="p">,</span> |
| <span class="s1">'full_filepath'</span><span class="p">,</span> |
| <span class="s1">'template_searchpath'</span><span class="p">,</span> |
| <span class="s1">'last_loaded'</span><span class="p">,</span></div> |
| <span class="p">}</span> |
| |
| <div class="viewcode-block" id="DAG.__serialized_fields"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.__serialized_fields">[docs]</a> <span class="n">__serialized_fields</span> <span class="o">=</span> <span class="kc">None</span> <span class="c1"># type: Optional[FrozenSet[str]]</span></div> |
| |
| <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> |
| <span class="n">dag_id</span><span class="p">,</span> <span class="c1"># type: str</span> |
| <span class="n">description</span><span class="o">=</span><span class="s1">''</span><span class="p">,</span> <span class="c1"># type: str</span> |
| <span class="n">schedule_interval</span><span class="o">=</span><span class="n">timedelta</span><span class="p">(</span><span class="n">days</span><span class="o">=</span><span class="mi">1</span><span class="p">),</span> <span class="c1"># type: Optional[ScheduleInterval]</span> |
| <span class="n">start_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[datetime]</span> |
| <span class="n">end_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[datetime]</span> |
| <span class="n">full_filepath</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[str]</span> |
| <span class="n">template_searchpath</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[Union[str, Iterable[str]]]</span> |
| <span class="n">template_undefined</span><span class="o">=</span><span class="n">jinja2</span><span class="o">.</span><span class="n">Undefined</span><span class="p">,</span> <span class="c1"># type: Type[jinja2.Undefined]</span> |
| <span class="n">user_defined_macros</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[Dict]</span> |
| <span class="n">user_defined_filters</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[Dict]</span> |
| <span class="n">default_args</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[Dict]</span> |
| <span class="n">concurrency</span><span class="o">=</span><span class="n">conf</span><span class="o">.</span><span class="n">getint</span><span class="p">(</span><span class="s1">'core'</span><span class="p">,</span> <span class="s1">'dag_concurrency'</span><span class="p">),</span> <span class="c1"># type: int</span> |
| <span class="n">max_active_runs</span><span class="o">=</span><span class="n">conf</span><span class="o">.</span><span class="n">getint</span><span class="p">(</span> |
| <span class="s1">'core'</span><span class="p">,</span> <span class="s1">'max_active_runs_per_dag'</span><span class="p">),</span> <span class="c1"># type: int</span> |
| <span class="n">dagrun_timeout</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[timedelta]</span> |
| <span class="n">sla_miss_callback</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[Callable]</span> |
| <span class="n">default_view</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[str]</span> |
| <span class="n">orientation</span><span class="o">=</span><span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'webserver'</span><span class="p">,</span> <span class="s1">'dag_orientation'</span><span class="p">),</span> <span class="c1"># type: str</span> |
| <span class="n">catchup</span><span class="o">=</span><span class="n">conf</span><span class="o">.</span><span class="n">getboolean</span><span class="p">(</span><span class="s1">'scheduler'</span><span class="p">,</span> <span class="s1">'catchup_by_default'</span><span class="p">),</span> <span class="c1"># type: bool</span> |
| <span class="n">on_success_callback</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[Callable]</span> |
| <span class="n">on_failure_callback</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[Callable]</span> |
| <span class="n">doc_md</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[str]</span> |
| <span class="n">params</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[Dict]</span> |
| <span class="n">access_control</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[Dict]</span> |
| <span class="n">is_paused_upon_creation</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[bool]</span> |
| <span class="n">jinja_environment_kwargs</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[Dict]</span> |
| <span class="n">tags</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="c1"># type: Optional[List[str]]</span> |
| <span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">user_defined_macros</span> <span class="o">=</span> <span class="n">user_defined_macros</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">user_defined_filters</span> <span class="o">=</span> <span class="n">user_defined_filters</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span> <span class="o">=</span> <span class="n">copy</span><span class="o">.</span><span class="n">deepcopy</span><span class="p">(</span><span class="n">default_args</span> <span class="ow">or</span> <span class="p">{})</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">params</span> <span class="o">=</span> <span class="n">params</span> <span class="ow">or</span> <span class="p">{}</span> |
| |
| <span class="c1"># merging potentially conflicting default_args['params'] into params</span> |
| <span class="k">if</span> <span class="s1">'params'</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">params</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'params'</span><span class="p">])</span> |
| <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'params'</span><span class="p">]</span> |
| |
| <span class="n">validate_key</span><span class="p">(</span><span class="n">dag_id</span><span class="p">)</span> |
| |
| <span class="c1"># Properties from BaseDag</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_dag_id</span> <span class="o">=</span> <span class="n">dag_id</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_full_filepath</span> <span class="o">=</span> <span class="n">full_filepath</span> <span class="k">if</span> <span class="n">full_filepath</span> <span class="k">else</span> <span class="s1">''</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_concurrency</span> <span class="o">=</span> <span class="n">concurrency</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_pickle_id</span> <span class="o">=</span> <span class="kc">None</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">_description</span> <span class="o">=</span> <span class="n">description</span> |
| <span class="c1"># set file location to caller source path</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">fileloc</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">_getframe</span><span class="p">()</span><span class="o">.</span><span class="n">f_back</span><span class="o">.</span><span class="n">f_code</span><span class="o">.</span><span class="n">co_filename</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">()</span> <span class="c1"># type: Dict[str, BaseOperator]</span> |
| |
| <span class="c1"># set timezone from start_date</span> |
| <span class="k">if</span> <span class="n">start_date</span> <span class="ow">and</span> <span class="n">start_date</span><span class="o">.</span><span class="n">tzinfo</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">timezone</span> <span class="o">=</span> <span class="n">start_date</span><span class="o">.</span><span class="n">tzinfo</span> |
| <span class="k">elif</span> <span class="s1">'start_date'</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'start_date'</span><span class="p">]:</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'start_date'</span><span class="p">],</span> <span class="n">six</span><span class="o">.</span><span class="n">string_types</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'start_date'</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">timezone</span><span class="o">.</span><span class="n">parse</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'start_date'</span><span class="p">])</span> |
| <span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">timezone</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'start_date'</span><span class="p">]</span><span class="o">.</span><span class="n">tzinfo</span> |
| |
| <span class="k">if</span> <span class="ow">not</span> <span class="nb">hasattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="s1">'timezone'</span><span class="p">)</span> <span class="ow">or</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">timezone</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">timezone</span> <span class="o">=</span> <span class="n">settings</span><span class="o">.</span><span class="n">TIMEZONE</span> |
| |
| <span class="c1"># Apply the timezone we settled on to end_date if it wasn't supplied</span> |
| <span class="k">if</span> <span class="s1">'end_date'</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'end_date'</span><span class="p">]:</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'end_date'</span><span class="p">],</span> <span class="n">six</span><span class="o">.</span><span class="n">string_types</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'end_date'</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">timezone</span><span class="o">.</span><span class="n">parse</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'end_date'</span><span class="p">],</span> <span class="n">timezone</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">timezone</span><span class="p">)</span> |
| <span class="p">)</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">start_date</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">convert_to_utc</span><span class="p">(</span><span class="n">start_date</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">end_date</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">convert_to_utc</span><span class="p">(</span><span class="n">end_date</span><span class="p">)</span> |
| |
| <span class="c1"># also convert tasks</span> |
| <span class="k">if</span> <span class="s1">'start_date'</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'start_date'</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">timezone</span><span class="o">.</span><span class="n">convert_to_utc</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'start_date'</span><span class="p">])</span> |
| <span class="p">)</span> |
| <span class="k">if</span> <span class="s1">'end_date'</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'end_date'</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">timezone</span><span class="o">.</span><span class="n">convert_to_utc</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">default_args</span><span class="p">[</span><span class="s1">'end_date'</span><span class="p">])</span> |
| <span class="p">)</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">schedule_interval</span> <span class="o">=</span> <span class="n">schedule_interval</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">schedule_interval</span><span class="p">,</span> <span class="n">six</span><span class="o">.</span><span class="n">string_types</span><span class="p">)</span> <span class="ow">and</span> <span class="n">schedule_interval</span> <span class="ow">in</span> <span class="n">cron_presets</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_schedule_interval</span> <span class="o">=</span> <span class="n">cron_presets</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">schedule_interval</span><span class="p">)</span> <span class="c1"># type: Optional[ScheduleInterval]</span> |
| <span class="k">elif</span> <span class="n">schedule_interval</span> <span class="o">==</span> <span class="s1">'@once'</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_schedule_interval</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_schedule_interval</span> <span class="o">=</span> <span class="n">schedule_interval</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">template_searchpath</span><span class="p">,</span> <span class="n">six</span><span class="o">.</span><span class="n">string_types</span><span class="p">):</span> |
| <span class="n">template_searchpath</span> <span class="o">=</span> <span class="p">[</span><span class="n">template_searchpath</span><span class="p">]</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">template_searchpath</span> <span class="o">=</span> <span class="n">template_searchpath</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">template_undefined</span> <span class="o">=</span> <span class="n">template_undefined</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">parent_dag</span> <span class="o">=</span> <span class="kc">None</span> <span class="c1"># Gets set when DAGs are loaded</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">last_loaded</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">safe_dag_id</span> <span class="o">=</span> <span class="n">dag_id</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s1">'.'</span><span class="p">,</span> <span class="s1">'__dot__'</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">max_active_runs</span> <span class="o">=</span> <span class="n">max_active_runs</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">dagrun_timeout</span> <span class="o">=</span> <span class="n">dagrun_timeout</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">sla_miss_callback</span> <span class="o">=</span> <span class="n">sla_miss_callback</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_default_view</span> <span class="o">=</span> <span class="n">default_view</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">orientation</span> <span class="o">=</span> <span class="n">orientation</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">catchup</span> <span class="o">=</span> <span class="n">catchup</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">is_subdag</span> <span class="o">=</span> <span class="kc">False</span> <span class="c1"># DagBag.bag_dag() will set this to True if appropriate</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">partial</span> <span class="o">=</span> <span class="kc">False</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">on_success_callback</span> <span class="o">=</span> <span class="n">on_success_callback</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">on_failure_callback</span> <span class="o">=</span> <span class="n">on_failure_callback</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">doc_md</span> <span class="o">=</span> <span class="n">doc_md</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">_old_context_manager_dags</span> <span class="o">=</span> <span class="p">[]</span> <span class="c1"># type: Iterable[DAG]</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_access_control</span> <span class="o">=</span> <span class="n">access_control</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">is_paused_upon_creation</span> <span class="o">=</span> <span class="n">is_paused_upon_creation</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">jinja_environment_kwargs</span> <span class="o">=</span> <span class="n">jinja_environment_kwargs</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">tags</span> <span class="o">=</span> <span class="n">tags</span> |
| |
| <div class="viewcode-block" id="DAG.__repr__"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.__repr__">[docs]</a> <span class="k">def</span> <span class="nf">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="s2">"<DAG: </span><span class="si">{self.dag_id}</span><span class="s2">>"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="bp">self</span><span class="o">=</span><span class="bp">self</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="DAG.__eq__"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.__eq__">[docs]</a> <span class="k">def</span> <span class="nf">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span> |
| <span class="k">if</span> <span class="p">(</span><span class="nb">type</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">==</span> <span class="nb">type</span><span class="p">(</span><span class="n">other</span><span class="p">)</span> <span class="ow">and</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">dag_id</span><span class="p">):</span> |
| |
| <span class="c1"># Use getattr() instead of __dict__ as __dict__ doesn't return</span> |
| <span class="c1"># correct values for properties.</span> |
| <span class="k">return</span> <span class="nb">all</span><span class="p">(</span><span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">c</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> <span class="o">==</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="n">c</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_comps</span><span class="p">)</span> |
| <span class="k">return</span> <span class="kc">False</span></div> |
| |
| <div class="viewcode-block" id="DAG.__ne__"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.__ne__">[docs]</a> <span class="k">def</span> <span class="nf">__ne__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span> |
| <span class="k">return</span> <span class="ow">not</span> <span class="bp">self</span> <span class="o">==</span> <span class="n">other</span></div> |
| |
| <div class="viewcode-block" id="DAG.__lt__"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.__lt__">[docs]</a> <span class="k">def</span> <span class="nf">__lt__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span> <span class="o"><</span> <span class="n">other</span><span class="o">.</span><span class="n">dag_id</span></div> |
| |
| <div class="viewcode-block" id="DAG.__hash__"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.__hash__">[docs]</a> <span class="k">def</span> <span class="nf">__hash__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="n">hash_components</span> <span class="o">=</span> <span class="p">[</span><span class="nb">type</span><span class="p">(</span><span class="bp">self</span><span class="p">)]</span> |
| <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_comps</span><span class="p">:</span> |
| <span class="c1"># task_ids returns a list and lists can't be hashed</span> |
| <span class="k">if</span> <span class="n">c</span> <span class="o">==</span> <span class="s1">'task_ids'</span><span class="p">:</span> |
| <span class="n">val</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span><span class="o">.</span><span class="n">keys</span><span class="p">())</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">val</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">c</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="nb">hash</span><span class="p">(</span><span class="n">val</span><span class="p">)</span> |
| <span class="n">hash_components</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">val</span><span class="p">)</span> |
| <span class="k">except</span> <span class="ne">TypeError</span><span class="p">:</span> |
| <span class="n">hash_components</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="nb">repr</span><span class="p">(</span><span class="n">val</span><span class="p">))</span> |
| <span class="k">return</span> <span class="nb">hash</span><span class="p">(</span><span class="nb">tuple</span><span class="p">(</span><span class="n">hash_components</span><span class="p">))</span></div> |
| |
| <span class="c1"># Context Manager -----------------------------------------------</span> |
| |
| <div class="viewcode-block" id="DAG.__enter__"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.__enter__">[docs]</a> <span class="k">def</span> <span class="nf">__enter__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_old_context_manager_dags</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">settings</span><span class="o">.</span><span class="n">CONTEXT_MANAGER_DAG</span><span class="p">)</span> |
| <span class="n">settings</span><span class="o">.</span><span class="n">CONTEXT_MANAGER_DAG</span> <span class="o">=</span> <span class="bp">self</span> |
| <span class="k">return</span> <span class="bp">self</span></div> |
| |
| <div class="viewcode-block" id="DAG.__exit__"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.__exit__">[docs]</a> <span class="k">def</span> <span class="nf">__exit__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">_type</span><span class="p">,</span> <span class="n">_value</span><span class="p">,</span> <span class="n">_tb</span><span class="p">):</span> |
| <span class="n">settings</span><span class="o">.</span><span class="n">CONTEXT_MANAGER_DAG</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_old_context_manager_dags</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span></div> |
| |
| <span class="c1"># /Context Manager ----------------------------------------------</span> |
| |
| <div class="viewcode-block" id="DAG.get_default_view"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.get_default_view">[docs]</a> <span class="k">def</span> <span class="nf">get_default_view</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""This is only there for backward compatible jinja2 templates"""</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_default_view</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'webserver'</span><span class="p">,</span> <span class="s1">'dag_default_view'</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_default_view</span></div> |
| |
| <div class="viewcode-block" id="DAG.date_range"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.date_range">[docs]</a> <span class="k">def</span> <span class="nf">date_range</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">start_date</span><span class="p">,</span> <span class="n">num</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">end_date</span><span class="o">=</span><span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()):</span> |
| <span class="k">if</span> <span class="n">num</span><span class="p">:</span> |
| <span class="n">end_date</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="k">return</span> <span class="n">utils_date_range</span><span class="p">(</span> |
| <span class="n">start_date</span><span class="o">=</span><span class="n">start_date</span><span class="p">,</span> <span class="n">end_date</span><span class="o">=</span><span class="n">end_date</span><span class="p">,</span> |
| <span class="n">num</span><span class="o">=</span><span class="n">num</span><span class="p">,</span> <span class="n">delta</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">_schedule_interval</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="DAG.is_fixed_time_schedule"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.is_fixed_time_schedule">[docs]</a> <span class="k">def</span> <span class="nf">is_fixed_time_schedule</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Figures out if the DAG schedule has a fixed time (e.g. 3 AM).</span> |
| |
| <span class="sd"> :return: True if the schedule has a fixed time, False if not.</span> |
| <span class="sd"> """</span> |
| <span class="n">now</span> <span class="o">=</span> <span class="n">datetime</span><span class="o">.</span><span class="n">now</span><span class="p">()</span> |
| <span class="n">cron</span> <span class="o">=</span> <span class="n">croniter</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_schedule_interval</span><span class="p">,</span> <span class="n">now</span><span class="p">)</span> |
| |
| <span class="n">start</span> <span class="o">=</span> <span class="n">cron</span><span class="o">.</span><span class="n">get_next</span><span class="p">(</span><span class="n">datetime</span><span class="p">)</span> |
| <span class="n">cron_next</span> <span class="o">=</span> <span class="n">cron</span><span class="o">.</span><span class="n">get_next</span><span class="p">(</span><span class="n">datetime</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="n">cron_next</span><span class="o">.</span><span class="n">minute</span> <span class="o">==</span> <span class="n">start</span><span class="o">.</span><span class="n">minute</span> <span class="ow">and</span> <span class="n">cron_next</span><span class="o">.</span><span class="n">hour</span> <span class="o">==</span> <span class="n">start</span><span class="o">.</span><span class="n">hour</span><span class="p">:</span> |
| <span class="k">return</span> <span class="kc">True</span> |
| |
| <span class="k">return</span> <span class="kc">False</span></div> |
| |
| <div class="viewcode-block" id="DAG.following_schedule"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.following_schedule">[docs]</a> <span class="k">def</span> <span class="nf">following_schedule</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dttm</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Calculates the following schedule for this dag in UTC.</span> |
| |
| <span class="sd"> :param dttm: utc datetime</span> |
| <span class="sd"> :return: utc datetime</span> |
| <span class="sd"> """</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_schedule_interval</span><span class="p">,</span> <span class="n">six</span><span class="o">.</span><span class="n">string_types</span><span class="p">):</span> |
| <span class="c1"># we don't want to rely on the transitions created by</span> |
| <span class="c1"># croniter as they are not always correct</span> |
| <span class="n">dttm</span> <span class="o">=</span> <span class="n">pendulum</span><span class="o">.</span><span class="n">instance</span><span class="p">(</span><span class="n">dttm</span><span class="p">)</span> |
| <span class="n">naive</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">make_naive</span><span class="p">(</span><span class="n">dttm</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">timezone</span><span class="p">)</span> |
| <span class="n">cron</span> <span class="o">=</span> <span class="n">croniter</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_schedule_interval</span><span class="p">,</span> <span class="n">naive</span><span class="p">)</span> |
| |
| <span class="c1"># We assume that DST transitions happen on the minute/hour</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_fixed_time_schedule</span><span class="p">():</span> |
| <span class="c1"># relative offset (eg. every 5 minutes)</span> |
| <span class="n">delta</span> <span class="o">=</span> <span class="n">cron</span><span class="o">.</span><span class="n">get_next</span><span class="p">(</span><span class="n">datetime</span><span class="p">)</span> <span class="o">-</span> <span class="n">naive</span> |
| <span class="n">following</span> <span class="o">=</span> <span class="n">dttm</span><span class="o">.</span><span class="n">in_timezone</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">timezone</span><span class="p">)</span><span class="o">.</span><span class="n">add_timedelta</span><span class="p">(</span><span class="n">delta</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="c1"># absolute (e.g. 3 AM)</span> |
| <span class="n">naive</span> <span class="o">=</span> <span class="n">cron</span><span class="o">.</span><span class="n">get_next</span><span class="p">(</span><span class="n">datetime</span><span class="p">)</span> |
| <span class="n">tz</span> <span class="o">=</span> <span class="n">pendulum</span><span class="o">.</span><span class="n">timezone</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">timezone</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> |
| <span class="n">following</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">make_aware</span><span class="p">(</span><span class="n">naive</span><span class="p">,</span> <span class="n">tz</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">timezone</span><span class="o">.</span><span class="n">convert_to_utc</span><span class="p">(</span><span class="n">following</span><span class="p">)</span> |
| <span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">_schedule_interval</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">dttm</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">_schedule_interval</span></div> |
| |
| <div class="viewcode-block" id="DAG.previous_schedule"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.previous_schedule">[docs]</a> <span class="k">def</span> <span class="nf">previous_schedule</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dttm</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Calculates the previous schedule for this dag in UTC</span> |
| |
| <span class="sd"> :param dttm: utc datetime</span> |
| <span class="sd"> :return: utc datetime</span> |
| <span class="sd"> """</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_schedule_interval</span><span class="p">,</span> <span class="n">six</span><span class="o">.</span><span class="n">string_types</span><span class="p">):</span> |
| <span class="c1"># we don't want to rely on the transitions created by</span> |
| <span class="c1"># croniter as they are not always correct</span> |
| <span class="n">dttm</span> <span class="o">=</span> <span class="n">pendulum</span><span class="o">.</span><span class="n">instance</span><span class="p">(</span><span class="n">dttm</span><span class="p">)</span> |
| <span class="n">naive</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">make_naive</span><span class="p">(</span><span class="n">dttm</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">timezone</span><span class="p">)</span> |
| <span class="n">cron</span> <span class="o">=</span> <span class="n">croniter</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_schedule_interval</span><span class="p">,</span> <span class="n">naive</span><span class="p">)</span> |
| |
| <span class="c1"># We assume that DST transitions happen on the minute/hour</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_fixed_time_schedule</span><span class="p">():</span> |
| <span class="c1"># relative offset (eg. every 5 minutes)</span> |
| <span class="n">delta</span> <span class="o">=</span> <span class="n">naive</span> <span class="o">-</span> <span class="n">cron</span><span class="o">.</span><span class="n">get_prev</span><span class="p">(</span><span class="n">datetime</span><span class="p">)</span> |
| <span class="n">previous</span> <span class="o">=</span> <span class="n">dttm</span><span class="o">.</span><span class="n">in_timezone</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">timezone</span><span class="p">)</span><span class="o">.</span><span class="n">subtract_timedelta</span><span class="p">(</span><span class="n">delta</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="c1"># absolute (e.g. 3 AM)</span> |
| <span class="n">naive</span> <span class="o">=</span> <span class="n">cron</span><span class="o">.</span><span class="n">get_prev</span><span class="p">(</span><span class="n">datetime</span><span class="p">)</span> |
| <span class="n">tz</span> <span class="o">=</span> <span class="n">pendulum</span><span class="o">.</span><span class="n">timezone</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">timezone</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> |
| <span class="n">previous</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">make_aware</span><span class="p">(</span><span class="n">naive</span><span class="p">,</span> <span class="n">tz</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">timezone</span><span class="o">.</span><span class="n">convert_to_utc</span><span class="p">(</span><span class="n">previous</span><span class="p">)</span> |
| <span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">_schedule_interval</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">dttm</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">_schedule_interval</span></div> |
| |
| <div class="viewcode-block" id="DAG.get_run_dates"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.get_run_dates">[docs]</a> <span class="k">def</span> <span class="nf">get_run_dates</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">start_date</span><span class="p">,</span> <span class="n">end_date</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns a list of dates between the interval received as parameter using this</span> |
| <span class="sd"> dag's schedule interval. Returned dates can be used for execution dates.</span> |
| |
| <span class="sd"> :param start_date: the start date of the interval</span> |
| <span class="sd"> :type start_date: datetime</span> |
| <span class="sd"> :param end_date: the end date of the interval, defaults to timezone.utcnow()</span> |
| <span class="sd"> :type end_date: datetime</span> |
| <span class="sd"> :return: a list of dates within the interval following the dag's schedule</span> |
| <span class="sd"> :rtype: list</span> |
| <span class="sd"> """</span> |
| <span class="n">run_dates</span> <span class="o">=</span> <span class="p">[]</span> |
| |
| <span class="n">using_start_date</span> <span class="o">=</span> <span class="n">start_date</span> |
| <span class="n">using_end_date</span> <span class="o">=</span> <span class="n">end_date</span> |
| |
| <span class="c1"># dates for dag runs</span> |
| <span class="n">using_start_date</span> <span class="o">=</span> <span class="n">using_start_date</span> <span class="ow">or</span> <span class="nb">min</span><span class="p">([</span><span class="n">t</span><span class="o">.</span><span class="n">start_date</span> <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">])</span> |
| <span class="n">using_end_date</span> <span class="o">=</span> <span class="n">using_end_date</span> <span class="ow">or</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> |
| |
| <span class="c1"># next run date for a subdag isn't relevant (schedule_interval for subdags</span> |
| <span class="c1"># is ignored) so we use the dag run's start date in the case of a subdag</span> |
| <span class="n">next_run_date</span> <span class="o">=</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">normalize_schedule</span><span class="p">(</span><span class="n">using_start_date</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_subdag</span> <span class="k">else</span> <span class="n">using_start_date</span><span class="p">)</span> |
| |
| <span class="k">while</span> <span class="n">next_run_date</span> <span class="ow">and</span> <span class="n">next_run_date</span> <span class="o"><=</span> <span class="n">using_end_date</span><span class="p">:</span> |
| <span class="n">run_dates</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">next_run_date</span><span class="p">)</span> |
| <span class="n">next_run_date</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">following_schedule</span><span class="p">(</span><span class="n">next_run_date</span><span class="p">)</span> |
| |
| <span class="k">return</span> <span class="n">run_dates</span></div> |
| |
| <div class="viewcode-block" id="DAG.normalize_schedule"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.normalize_schedule">[docs]</a> <span class="k">def</span> <span class="nf">normalize_schedule</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dttm</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns dttm + interval unless dttm is first interval then it returns dttm</span> |
| <span class="sd"> """</span> |
| <span class="n">following</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">following_schedule</span><span class="p">(</span><span class="n">dttm</span><span class="p">)</span> |
| |
| <span class="c1"># in case of @once</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">following</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">dttm</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">previous_schedule</span><span class="p">(</span><span class="n">following</span><span class="p">)</span> <span class="o">!=</span> <span class="n">dttm</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">following</span> |
| |
| <span class="k">return</span> <span class="n">dttm</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.get_last_dagrun"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.get_last_dagrun">[docs]</a> <span class="k">def</span> <span class="nf">get_last_dagrun</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">include_externally_triggered</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">get_last_dagrun</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> |
| <span class="n">include_externally_triggered</span><span class="o">=</span><span class="n">include_externally_triggered</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.dag_id"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.dag_id">[docs]</a> <span class="k">def</span> <span class="nf">dag_id</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_dag_id</span></div> |
| |
| <span class="nd">@dag_id</span><span class="o">.</span><span class="n">setter</span> |
| <span class="k">def</span> <span class="nf">dag_id</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_dag_id</span> <span class="o">=</span> <span class="n">value</span> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.full_filepath"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.full_filepath">[docs]</a> <span class="k">def</span> <span class="nf">full_filepath</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_full_filepath</span></div> |
| |
| <span class="nd">@full_filepath</span><span class="o">.</span><span class="n">setter</span> |
| <span class="k">def</span> <span class="nf">full_filepath</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_full_filepath</span> <span class="o">=</span> <span class="n">value</span> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.concurrency"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.concurrency">[docs]</a> <span class="k">def</span> <span class="nf">concurrency</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_concurrency</span></div> |
| |
| <span class="nd">@concurrency</span><span class="o">.</span><span class="n">setter</span> |
| <span class="k">def</span> <span class="nf">concurrency</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_concurrency</span> <span class="o">=</span> <span class="n">value</span> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.access_control"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.access_control">[docs]</a> <span class="k">def</span> <span class="nf">access_control</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_access_control</span></div> |
| |
| <span class="nd">@access_control</span><span class="o">.</span><span class="n">setter</span> |
| <span class="k">def</span> <span class="nf">access_control</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_access_control</span> <span class="o">=</span> <span class="n">value</span> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.description"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.description">[docs]</a> <span class="k">def</span> <span class="nf">description</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_description</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.pickle_id"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.pickle_id">[docs]</a> <span class="k">def</span> <span class="nf">pickle_id</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_pickle_id</span></div> |
| |
| <span class="nd">@pickle_id</span><span class="o">.</span><span class="n">setter</span> |
| <span class="k">def</span> <span class="nf">pickle_id</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_pickle_id</span> <span class="o">=</span> <span class="n">value</span> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.tasks"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.tasks">[docs]</a> <span class="k">def</span> <span class="nf">tasks</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="nb">list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span><span class="o">.</span><span class="n">values</span><span class="p">())</span></div> |
| |
| <span class="nd">@tasks</span><span class="o">.</span><span class="n">setter</span> |
| <span class="k">def</span> <span class="nf">tasks</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">val</span><span class="p">):</span> |
| <span class="k">raise</span> <span class="ne">AttributeError</span><span class="p">(</span> |
| <span class="s1">'DAG.tasks can not be modified. Use dag.add_task() instead.'</span><span class="p">)</span> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.task_ids"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.task_ids">[docs]</a> <span class="k">def</span> <span class="nf">task_ids</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="nb">list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span><span class="o">.</span><span class="n">keys</span><span class="p">())</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.filepath"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.filepath">[docs]</a> <span class="k">def</span> <span class="nf">filepath</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> File location of where the dag object is instantiated</span> |
| <span class="sd"> """</span> |
| <span class="n">fn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">full_filepath</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">settings</span><span class="o">.</span><span class="n">DAGS_FOLDER</span> <span class="o">+</span> <span class="s1">'/'</span><span class="p">,</span> <span class="s1">''</span><span class="p">)</span> |
| <span class="n">fn</span> <span class="o">=</span> <span class="n">fn</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="vm">__file__</span><span class="p">)</span> <span class="o">+</span> <span class="s1">'/'</span><span class="p">,</span> <span class="s1">''</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">fn</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.folder"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.folder">[docs]</a> <span class="k">def</span> <span class="nf">folder</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""Folder location of where the DAG object is instantiated."""</span> |
| <span class="k">return</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">full_filepath</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.owner"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.owner">[docs]</a> <span class="k">def</span> <span class="nf">owner</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Return list of all owners found in DAG tasks.</span> |
| |
| <span class="sd"> :return: Comma separated list of owners in DAG tasks</span> |
| <span class="sd"> :rtype: str</span> |
| <span class="sd"> """</span> |
| <span class="k">return</span> <span class="s2">", "</span><span class="o">.</span><span class="n">join</span><span class="p">({</span><span class="n">t</span><span class="o">.</span><span class="n">owner</span> <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">})</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.allow_future_exec_dates"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.allow_future_exec_dates">[docs]</a> <span class="k">def</span> <span class="nf">allow_future_exec_dates</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">conf</span><span class="o">.</span><span class="n">getboolean</span><span class="p">(</span> |
| <span class="s1">'scheduler'</span><span class="p">,</span> |
| <span class="s1">'allow_trigger_in_future'</span><span class="p">,</span> |
| <span class="n">fallback</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">schedule_interval</span> <span class="ow">is</span> <span class="kc">None</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG._get_concurrency_reached"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG._get_concurrency_reached">[docs]</a> <span class="k">def</span> <span class="nf">_get_concurrency_reached</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="n">TI</span> <span class="o">=</span> <span class="n">TaskInstance</span> |
| <span class="n">qry</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">func</span><span class="o">.</span><span class="n">count</span><span class="p">(</span><span class="n">TI</span><span class="o">.</span><span class="n">task_id</span><span class="p">))</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span> |
| <span class="n">TI</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> |
| <span class="n">TI</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">State</span><span class="o">.</span><span class="n">RUNNING</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="k">return</span> <span class="n">qry</span><span class="o">.</span><span class="n">scalar</span><span class="p">()</span> <span class="o">>=</span> <span class="bp">self</span><span class="o">.</span><span class="n">concurrency</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.concurrency_reached"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.concurrency_reached">[docs]</a> <span class="k">def</span> <span class="nf">concurrency_reached</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns a boolean indicating whether the concurrency limit for this DAG</span> |
| <span class="sd"> has been reached</span> |
| <span class="sd"> """</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_concurrency_reached</span><span class="p">()</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG._get_is_paused"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG._get_is_paused">[docs]</a> <span class="k">def</span> <span class="nf">_get_is_paused</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="n">qry</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">DagModel</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span> |
| <span class="n">DagModel</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">qry</span><span class="o">.</span><span class="n">value</span><span class="p">(</span><span class="n">DagModel</span><span class="o">.</span><span class="n">is_paused</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.is_paused"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.is_paused">[docs]</a> <span class="k">def</span> <span class="nf">is_paused</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns a boolean indicating whether this DAG is paused</span> |
| <span class="sd"> """</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_is_paused</span><span class="p">()</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.handle_callback"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.handle_callback">[docs]</a> <span class="k">def</span> <span class="nf">handle_callback</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dagrun</span><span class="p">,</span> <span class="n">success</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">reason</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Triggers the appropriate callback depending on the value of success, namely the</span> |
| <span class="sd"> on_failure_callback or on_success_callback. This method gets the context of a</span> |
| <span class="sd"> single TaskInstance part of this DagRun and passes that to the callable along</span> |
| <span class="sd"> with a 'reason', primarily to differentiate DagRun failures.</span> |
| |
| <span class="sd"> .. note: The logs end up in</span> |
| <span class="sd"> ``$AIRFLOW_HOME/logs/scheduler/latest/PROJECT/DAG_FILE.py.log``</span> |
| |
| <span class="sd"> :param dagrun: DagRun object</span> |
| <span class="sd"> :param success: Flag to specify if failure or success callback should be called</span> |
| <span class="sd"> :param reason: Completion reason</span> |
| <span class="sd"> :param session: Database session</span> |
| <span class="sd"> """</span> |
| <span class="n">callback</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">on_success_callback</span> <span class="k">if</span> <span class="n">success</span> <span class="k">else</span> <span class="bp">self</span><span class="o">.</span><span class="n">on_failure_callback</span> |
| <span class="k">if</span> <span class="n">callback</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Executing dag callback function: </span><span class="si">{}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">callback</span><span class="p">))</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">dagrun</span><span class="o">.</span><span class="n">get_task_instances</span><span class="p">()</span> |
| <span class="n">ti</span> <span class="o">=</span> <span class="n">tis</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="c1"># get first TaskInstance of DagRun</span> |
| <span class="n">ti</span><span class="o">.</span><span class="n">task</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_task</span><span class="p">(</span><span class="n">ti</span><span class="o">.</span><span class="n">task_id</span><span class="p">)</span> |
| <span class="n">context</span> <span class="o">=</span> <span class="n">ti</span><span class="o">.</span><span class="n">get_template_context</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">)</span> |
| <span class="n">context</span><span class="o">.</span><span class="n">update</span><span class="p">({</span><span class="s1">'reason'</span><span class="p">:</span> <span class="n">reason</span><span class="p">})</span> |
| <span class="n">callback</span><span class="p">(</span><span class="n">context</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="DAG.get_active_runs"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.get_active_runs">[docs]</a> <span class="k">def</span> <span class="nf">get_active_runs</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns a list of dag run execution dates currently running</span> |
| |
| <span class="sd"> :return: List of execution dates</span> |
| <span class="sd"> """</span> |
| <span class="n">runs</span> <span class="o">=</span> <span class="n">DagRun</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="n">dag_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">state</span><span class="o">=</span><span class="n">State</span><span class="o">.</span><span class="n">RUNNING</span><span class="p">)</span> |
| |
| <span class="n">active_dates</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="k">for</span> <span class="n">run</span> <span class="ow">in</span> <span class="n">runs</span><span class="p">:</span> |
| <span class="n">active_dates</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">run</span><span class="o">.</span><span class="n">execution_date</span><span class="p">)</span> |
| |
| <span class="k">return</span> <span class="n">active_dates</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.get_num_active_runs"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.get_num_active_runs">[docs]</a> <span class="k">def</span> <span class="nf">get_num_active_runs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">external_trigger</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns the number of active "running" dag runs</span> |
| |
| <span class="sd"> :param external_trigger: True for externally triggered active dag runs</span> |
| <span class="sd"> :type external_trigger: bool</span> |
| <span class="sd"> :param session:</span> |
| <span class="sd"> :return: number greater than 0 for active dag runs</span> |
| <span class="sd"> """</span> |
| <span class="c1"># .count() is inefficient</span> |
| <span class="n">query</span> <span class="o">=</span> <span class="p">(</span><span class="n">session</span> |
| <span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">func</span><span class="o">.</span><span class="n">count</span><span class="p">())</span> |
| <span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DagRun</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DagRun</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">State</span><span class="o">.</span><span class="n">RUNNING</span><span class="p">))</span> |
| |
| <span class="k">if</span> <span class="n">external_trigger</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="n">query</span> <span class="o">=</span> <span class="n">query</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DagRun</span><span class="o">.</span><span class="n">external_trigger</span> <span class="o">==</span> <span class="n">external_trigger</span><span class="p">)</span> |
| |
| <span class="k">return</span> <span class="n">query</span><span class="o">.</span><span class="n">scalar</span><span class="p">()</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.get_dagrun"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.get_dagrun">[docs]</a> <span class="k">def</span> <span class="nf">get_dagrun</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">execution_date</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns the dag run for a given execution date if it exists, otherwise</span> |
| <span class="sd"> none.</span> |
| |
| <span class="sd"> :param execution_date: The execution date of the DagRun to find.</span> |
| <span class="sd"> :param session:</span> |
| <span class="sd"> :return: The DagRun if found, otherwise None.</span> |
| <span class="sd"> """</span> |
| <span class="n">dagrun</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">DagRun</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">filter</span><span class="p">(</span> |
| <span class="n">DagRun</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> |
| <span class="n">DagRun</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">==</span> <span class="n">execution_date</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">first</span><span class="p">())</span> |
| |
| <span class="k">return</span> <span class="n">dagrun</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.get_dagruns_between"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.get_dagruns_between">[docs]</a> <span class="k">def</span> <span class="nf">get_dagruns_between</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">start_date</span><span class="p">,</span> <span class="n">end_date</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns the list of dag runs between start_date (inclusive) and end_date (inclusive).</span> |
| |
| <span class="sd"> :param start_date: The starting execution date of the DagRun to find.</span> |
| <span class="sd"> :param end_date: The ending execution date of the DagRun to find.</span> |
| <span class="sd"> :param session:</span> |
| <span class="sd"> :return: The list of DagRuns found.</span> |
| <span class="sd"> """</span> |
| <span class="n">dagruns</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">DagRun</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">filter</span><span class="p">(</span> |
| <span class="n">DagRun</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> |
| <span class="n">DagRun</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">>=</span> <span class="n">start_date</span><span class="p">,</span> |
| <span class="n">DagRun</span><span class="o">.</span><span class="n">execution_date</span> <span class="o"><=</span> <span class="n">end_date</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">all</span><span class="p">())</span> |
| |
| <span class="k">return</span> <span class="n">dagruns</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG._get_latest_execution_date"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG._get_latest_execution_date">[docs]</a> <span class="k">def</span> <span class="nf">_get_latest_execution_date</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">func</span><span class="o">.</span><span class="n">max</span><span class="p">(</span><span class="n">DagRun</span><span class="o">.</span><span class="n">execution_date</span><span class="p">))</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span> |
| <span class="n">DagRun</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span></div> |
| <span class="p">)</span><span class="o">.</span><span class="n">scalar</span><span class="p">()</span> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.latest_execution_date"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.latest_execution_date">[docs]</a> <span class="k">def</span> <span class="nf">latest_execution_date</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns the latest date for which at least one dag run exists</span> |
| <span class="sd"> """</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_latest_execution_date</span><span class="p">()</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.subdags"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.subdags">[docs]</a> <span class="k">def</span> <span class="nf">subdags</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns a list of the subdag objects associated to this DAG</span> |
| <span class="sd"> """</span> |
| <span class="c1"># Check SubDag for class but don't check class directly</span> |
| <span class="kn">from</span> <span class="nn">airflow.operators.subdag_operator</span> <span class="k">import</span> <span class="n">SubDagOperator</span> |
| <span class="n">subdag_lst</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="k">for</span> <span class="n">task</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">:</span> |
| <span class="k">if</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">task</span><span class="p">,</span> <span class="n">SubDagOperator</span><span class="p">)</span> <span class="ow">or</span> |
| <span class="c1"># TODO remove in Airflow 2.0</span> |
| <span class="nb">type</span><span class="p">(</span><span class="n">task</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span> <span class="o">==</span> <span class="s1">'SubDagOperator'</span> <span class="ow">or</span> |
| <span class="n">task</span><span class="o">.</span><span class="n">task_type</span> <span class="o">==</span> <span class="s1">'SubDagOperator'</span><span class="p">):</span> |
| <span class="n">subdag_lst</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">task</span><span class="o">.</span><span class="n">subdag</span><span class="p">)</span> |
| <span class="n">subdag_lst</span> <span class="o">+=</span> <span class="n">task</span><span class="o">.</span><span class="n">subdag</span><span class="o">.</span><span class="n">subdags</span> |
| <span class="k">return</span> <span class="n">subdag_lst</span></div> |
| |
| <div class="viewcode-block" id="DAG.resolve_template_files"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.resolve_template_files">[docs]</a> <span class="k">def</span> <span class="nf">resolve_template_files</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">:</span> |
| <span class="n">t</span><span class="o">.</span><span class="n">resolve_template_files</span><span class="p">()</span></div> |
| |
| <div class="viewcode-block" id="DAG.get_template_env"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.get_template_env">[docs]</a> <span class="k">def</span> <span class="nf">get_template_env</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="c1"># type: () -> jinja2.Environment</span> |
| <span class="sd">"""Build a Jinja2 environment."""</span> |
| |
| <span class="c1"># Collect directories to search for template files</span> |
| <span class="n">searchpath</span> <span class="o">=</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">folder</span><span class="p">]</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">template_searchpath</span><span class="p">:</span> |
| <span class="n">searchpath</span> <span class="o">+=</span> <span class="bp">self</span><span class="o">.</span><span class="n">template_searchpath</span> |
| |
| <span class="c1"># Default values (for backward compatibility)</span> |
| <span class="n">jinja_env_options</span> <span class="o">=</span> <span class="p">{</span> |
| <span class="s1">'loader'</span><span class="p">:</span> <span class="n">jinja2</span><span class="o">.</span><span class="n">FileSystemLoader</span><span class="p">(</span><span class="n">searchpath</span><span class="p">),</span> |
| <span class="s1">'undefined'</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">template_undefined</span><span class="p">,</span> |
| <span class="s1">'extensions'</span><span class="p">:</span> <span class="p">[</span><span class="s2">"jinja2.ext.do"</span><span class="p">],</span> |
| <span class="s1">'cache_size'</span><span class="p">:</span> <span class="mi">0</span> |
| <span class="p">}</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">jinja_environment_kwargs</span><span class="p">:</span> |
| <span class="n">jinja_env_options</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">jinja_environment_kwargs</span><span class="p">)</span> |
| |
| <span class="n">env</span> <span class="o">=</span> <span class="n">jinja2</span><span class="o">.</span><span class="n">Environment</span><span class="p">(</span><span class="o">**</span><span class="n">jinja_env_options</span><span class="p">)</span> <span class="c1"># type: ignore</span> |
| |
| <span class="c1"># Add any user defined items. Safe to edit globals as long as no templates are rendered yet.</span> |
| <span class="c1"># http://jinja.pocoo.org/docs/2.10/api/#jinja2.Environment.globals</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">user_defined_macros</span><span class="p">:</span> |
| <span class="n">env</span><span class="o">.</span><span class="n">globals</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">user_defined_macros</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">user_defined_filters</span><span class="p">:</span> |
| <span class="n">env</span><span class="o">.</span><span class="n">filters</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">user_defined_filters</span><span class="p">)</span> |
| |
| <span class="k">return</span> <span class="n">env</span></div> |
| |
| <div class="viewcode-block" id="DAG.set_dependency"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.set_dependency">[docs]</a> <span class="k">def</span> <span class="nf">set_dependency</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">upstream_task_id</span><span class="p">,</span> <span class="n">downstream_task_id</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Simple utility method to set dependency between two tasks that</span> |
| <span class="sd"> already have been added to the DAG using add_task()</span> |
| <span class="sd"> """</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">get_task</span><span class="p">(</span><span class="n">upstream_task_id</span><span class="p">)</span><span class="o">.</span><span class="n">set_downstream</span><span class="p">(</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">get_task</span><span class="p">(</span><span class="n">downstream_task_id</span><span class="p">))</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.get_task_instances"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.get_task_instances">[docs]</a> <span class="k">def</span> <span class="nf">get_task_instances</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> <span class="n">start_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">end_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">state</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">start_date</span><span class="p">:</span> |
| <span class="n">start_date</span> <span class="o">=</span> <span class="p">(</span><span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> <span class="o">-</span> <span class="n">timedelta</span><span class="p">(</span><span class="mi">30</span><span class="p">))</span><span class="o">.</span><span class="n">date</span><span class="p">()</span> |
| <span class="n">start_date</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">make_aware</span><span class="p">(</span> |
| <span class="n">datetime</span><span class="o">.</span><span class="n">combine</span><span class="p">(</span><span class="n">start_date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">min</span><span class="o">.</span><span class="n">time</span><span class="p">()))</span> |
| |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">TaskInstance</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span> |
| <span class="n">TaskInstance</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> |
| <span class="n">TaskInstance</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">>=</span> <span class="n">start_date</span><span class="p">,</span> |
| <span class="n">TaskInstance</span><span class="o">.</span><span class="n">task_id</span><span class="o">.</span><span class="n">in_</span><span class="p">([</span><span class="n">t</span><span class="o">.</span><span class="n">task_id</span> <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">]),</span> |
| <span class="p">)</span> |
| |
| <span class="c1"># This allows allow_trigger_in_future config to take affect, rather than mandating exec_date <= UTC</span> |
| <span class="k">if</span> <span class="n">end_date</span> <span class="ow">or</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">allow_future_exec_dates</span><span class="p">:</span> |
| <span class="n">end_date</span> <span class="o">=</span> <span class="n">end_date</span> <span class="ow">or</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">TaskInstance</span><span class="o">.</span><span class="n">execution_date</span> <span class="o"><=</span> <span class="n">end_date</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="n">state</span><span class="p">:</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">state</span><span class="p">,</span> <span class="nb">str</span><span class="p">):</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">TaskInstance</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">state</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="c1"># this is required to deal with NULL values</span> |
| <span class="k">if</span> <span class="kc">None</span> <span class="ow">in</span> <span class="n">state</span><span class="p">:</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span> |
| <span class="n">or_</span><span class="p">(</span><span class="n">TaskInstance</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="n">state</span><span class="p">),</span> |
| <span class="n">TaskInstance</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">is_</span><span class="p">(</span><span class="kc">None</span><span class="p">))</span> |
| <span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">TaskInstance</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="n">state</span><span class="p">))</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">order_by</span><span class="p">(</span><span class="n">TaskInstance</span><span class="o">.</span><span class="n">execution_date</span><span class="p">)</span><span class="o">.</span><span class="n">all</span><span class="p">()</span> |
| <span class="k">return</span> <span class="n">tis</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.roots"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.roots">[docs]</a> <span class="k">def</span> <span class="nf">roots</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""Return nodes with no parents. These are first to execute and are called roots or root nodes."""</span> |
| <span class="k">return</span> <span class="p">[</span><span class="n">task</span> <span class="k">for</span> <span class="n">task</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span> <span class="k">if</span> <span class="ow">not</span> <span class="n">task</span><span class="o">.</span><span class="n">upstream_list</span><span class="p">]</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DAG.leaves"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.leaves">[docs]</a> <span class="k">def</span> <span class="nf">leaves</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""Return nodes with no children. These are last to execute and are called leaves or leaf nodes."""</span> |
| <span class="k">return</span> <span class="p">[</span><span class="n">task</span> <span class="k">for</span> <span class="n">task</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span> <span class="k">if</span> <span class="ow">not</span> <span class="n">task</span><span class="o">.</span><span class="n">downstream_list</span><span class="p">]</span></div> |
| |
| <div class="viewcode-block" id="DAG.topological_sort"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.topological_sort">[docs]</a> <span class="k">def</span> <span class="nf">topological_sort</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Sorts tasks in topographical order, such that a task comes after any of its</span> |
| <span class="sd"> upstream dependencies.</span> |
| |
| <span class="sd"> Heavily inspired by:</span> |
| <span class="sd"> http://blog.jupo.org/2012/04/06/topological-sorting-acyclic-directed-graphs/</span> |
| |
| <span class="sd"> :return: list of tasks in topological order</span> |
| <span class="sd"> """</span> |
| |
| <span class="c1"># convert into an OrderedDict to speedup lookup while keeping order the same</span> |
| <span class="n">graph_unsorted</span> <span class="o">=</span> <span class="n">OrderedDict</span><span class="p">((</span><span class="n">task</span><span class="o">.</span><span class="n">task_id</span><span class="p">,</span> <span class="n">task</span><span class="p">)</span> <span class="k">for</span> <span class="n">task</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">)</span> |
| |
| <span class="n">graph_sorted</span> <span class="o">=</span> <span class="p">[]</span> |
| |
| <span class="c1"># special case</span> |
| <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="k">return</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">graph_sorted</span><span class="p">)</span> |
| |
| <span class="c1"># Run until the unsorted graph is empty.</span> |
| <span class="k">while</span> <span class="n">graph_unsorted</span><span class="p">:</span> |
| <span class="c1"># Go through each of the node/edges pairs in the unsorted</span> |
| <span class="c1"># graph. If a set of edges doesn't contain any nodes that</span> |
| <span class="c1"># haven't been resolved, that is, that are still in the</span> |
| <span class="c1"># unsorted graph, remove the pair from the unsorted graph,</span> |
| <span class="c1"># and append it to the sorted graph. Note here that by using</span> |
| <span class="c1"># using the items() method for iterating, a copy of the</span> |
| <span class="c1"># unsorted graph is used, allowing us to modify the unsorted</span> |
| <span class="c1"># graph as we move through it. We also keep a flag for</span> |
| <span class="c1"># checking that that graph is acyclic, which is true if any</span> |
| <span class="c1"># nodes are resolved during each pass through the graph. If</span> |
| <span class="c1"># not, we need to bail out as the graph therefore can't be</span> |
| <span class="c1"># sorted.</span> |
| <span class="n">acyclic</span> <span class="o">=</span> <span class="kc">False</span> |
| <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="nb">list</span><span class="p">(</span><span class="n">graph_unsorted</span><span class="o">.</span><span class="n">values</span><span class="p">()):</span> |
| <span class="k">for</span> <span class="n">edge</span> <span class="ow">in</span> <span class="n">node</span><span class="o">.</span><span class="n">upstream_list</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">edge</span><span class="o">.</span><span class="n">task_id</span> <span class="ow">in</span> <span class="n">graph_unsorted</span><span class="p">:</span> |
| <span class="k">break</span> |
| <span class="c1"># no edges in upstream tasks</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">acyclic</span> <span class="o">=</span> <span class="kc">True</span> |
| <span class="k">del</span> <span class="n">graph_unsorted</span><span class="p">[</span><span class="n">node</span><span class="o">.</span><span class="n">task_id</span><span class="p">]</span> |
| <span class="n">graph_sorted</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">acyclic</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"A cyclic dependency occurred in dag: </span><span class="si">{}</span><span class="s2">"</span> |
| <span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">))</span> |
| |
| <span class="k">return</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">graph_sorted</span><span class="p">)</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.set_dag_runs_state"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.set_dag_runs_state">[docs]</a> <span class="k">def</span> <span class="nf">set_dag_runs_state</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> |
| <span class="n">state</span><span class="o">=</span><span class="n">State</span><span class="o">.</span><span class="n">RUNNING</span><span class="p">,</span> |
| <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">start_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">end_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="p">):</span> |
| <span class="n">query</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">DagRun</span><span class="p">)</span><span class="o">.</span><span class="n">filter_by</span><span class="p">(</span><span class="n">dag_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">start_date</span><span class="p">:</span> |
| <span class="n">query</span> <span class="o">=</span> <span class="n">query</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DagRun</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">>=</span> <span class="n">start_date</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">end_date</span><span class="p">:</span> |
| <span class="n">query</span> <span class="o">=</span> <span class="n">query</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DagRun</span><span class="o">.</span><span class="n">execution_date</span> <span class="o"><=</span> <span class="n">end_date</span><span class="p">)</span> |
| <span class="n">drs</span> <span class="o">=</span> <span class="n">query</span><span class="o">.</span><span class="n">all</span><span class="p">()</span> |
| |
| <span class="n">dirty_ids</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="k">for</span> <span class="n">dr</span> <span class="ow">in</span> <span class="n">drs</span><span class="p">:</span> |
| <span class="n">dr</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="n">state</span> |
| <span class="n">dirty_ids</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">dr</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.clear"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.clear">[docs]</a> <span class="k">def</span> <span class="nf">clear</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> <span class="n">start_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">end_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">only_failed</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">only_running</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">confirm_prompt</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">include_subdags</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> |
| <span class="n">include_parentdag</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> |
| <span class="n">reset_dag_runs</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> |
| <span class="n">dry_run</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">get_tis</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">recursion_depth</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> |
| <span class="n">max_recursion_depth</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">dag_bag</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Clears a set of task instances associated with the current dag for</span> |
| <span class="sd"> a specified date range.</span> |
| |
| <span class="sd"> :param start_date: The minimum execution_date to clear</span> |
| <span class="sd"> :type start_date: datetime.datetime or None</span> |
| <span class="sd"> :param end_date: The maximum exeuction_date to clear</span> |
| <span class="sd"> :type end_date: datetime.datetime or None</span> |
| <span class="sd"> :param only_failed: Only clear failed tasks</span> |
| <span class="sd"> :type only_failed: bool</span> |
| <span class="sd"> :param only_running: Only clear running tasks.</span> |
| <span class="sd"> :type only_running: bool</span> |
| <span class="sd"> :param confirm_prompt: Ask for confirmation</span> |
| <span class="sd"> :type confirm_prompt: bool</span> |
| <span class="sd"> :param include_subdags: Clear tasks in subdags and clear external tasks</span> |
| <span class="sd"> indicated by ExternalTaskMarker</span> |
| <span class="sd"> :type include_subdags: bool</span> |
| <span class="sd"> :param include_parentdag: Clear tasks in the parent dag of the subdag.</span> |
| <span class="sd"> :type include_parentdag: bool</span> |
| <span class="sd"> :param reset_dag_runs: Set state of dag to RUNNING</span> |
| <span class="sd"> :type reset_dag_runs: bool</span> |
| <span class="sd"> :param dry_run: Find the tasks to clear but don't clear them.</span> |
| <span class="sd"> :type dry_run: bool</span> |
| <span class="sd"> :param session: The sqlalchemy session to use</span> |
| <span class="sd"> :type session: sqlalchemy.orm.session.Session</span> |
| <span class="sd"> :param get_tis: Return the sqlachemy query for finding the TaskInstance without clearing the tasks</span> |
| <span class="sd"> :type get_tis: bool</span> |
| <span class="sd"> :param recursion_depth: The recursion depth of nested calls to DAG.clear().</span> |
| <span class="sd"> :type recursion_depth: int</span> |
| <span class="sd"> :param max_recursion_depth: The maximum recusion depth allowed. This is determined by the</span> |
| <span class="sd"> first encountered ExternalTaskMarker. Default is None indicating no ExternalTaskMarker</span> |
| <span class="sd"> has been encountered.</span> |
| <span class="sd"> :type max_recursion_depth: int</span> |
| <span class="sd"> :param dag_bag: The DagBag used to find the dags</span> |
| <span class="sd"> :type dag_bag: airflow.models.dagbag.DagBag</span> |
| <span class="sd"> """</span> |
| <span class="n">TI</span> <span class="o">=</span> <span class="n">TaskInstance</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">TI</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">include_subdags</span><span class="p">:</span> |
| <span class="c1"># Crafting the right filter for dag_id and task_ids combo</span> |
| <span class="n">conditions</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="k">for</span> <span class="n">dag</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">subdags</span> <span class="o">+</span> <span class="p">[</span><span class="bp">self</span><span class="p">]:</span> |
| <span class="n">conditions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> |
| <span class="n">TI</span><span class="o">.</span><span class="n">dag_id</span><span class="o">.</span><span class="n">like</span><span class="p">(</span><span class="n">dag</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span> <span class="o">&</span> |
| <span class="n">TI</span><span class="o">.</span><span class="n">task_id</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="n">dag</span><span class="o">.</span><span class="n">task_ids</span><span class="p">)</span> |
| <span class="p">)</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">or_</span><span class="p">(</span><span class="o">*</span><span class="n">conditions</span><span class="p">))</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">TI</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">TI</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">TI</span><span class="o">.</span><span class="n">task_id</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">task_ids</span><span class="p">))</span> |
| |
| <span class="k">if</span> <span class="n">include_parentdag</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_subdag</span><span class="p">:</span> |
| |
| <span class="n">p_dag</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">parent_dag</span><span class="o">.</span><span class="n">sub_dag</span><span class="p">(</span> |
| <span class="n">task_regex</span><span class="o">=</span><span class="sa">r</span><span class="s2">"^</span><span class="si">{}</span><span class="s2">$"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">'.'</span><span class="p">)[</span><span class="mi">1</span><span class="p">]),</span> |
| <span class="n">include_upstream</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">include_downstream</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> |
| |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">union</span><span class="p">(</span><span class="n">p_dag</span><span class="o">.</span><span class="n">clear</span><span class="p">(</span> |
| <span class="n">start_date</span><span class="o">=</span><span class="n">start_date</span><span class="p">,</span> <span class="n">end_date</span><span class="o">=</span><span class="n">end_date</span><span class="p">,</span> |
| <span class="n">only_failed</span><span class="o">=</span><span class="n">only_failed</span><span class="p">,</span> |
| <span class="n">only_running</span><span class="o">=</span><span class="n">only_running</span><span class="p">,</span> |
| <span class="n">confirm_prompt</span><span class="o">=</span><span class="n">confirm_prompt</span><span class="p">,</span> |
| <span class="n">include_subdags</span><span class="o">=</span><span class="n">include_subdags</span><span class="p">,</span> |
| <span class="n">include_parentdag</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">reset_dag_runs</span><span class="o">=</span><span class="n">reset_dag_runs</span><span class="p">,</span> |
| <span class="n">get_tis</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> |
| <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> |
| <span class="n">recursion_depth</span><span class="o">=</span><span class="n">recursion_depth</span><span class="p">,</span> |
| <span class="n">max_recursion_depth</span><span class="o">=</span><span class="n">max_recursion_depth</span><span class="p">,</span> |
| <span class="n">dag_bag</span><span class="o">=</span><span class="n">dag_bag</span> |
| <span class="p">))</span> |
| |
| <span class="k">if</span> <span class="n">start_date</span><span class="p">:</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">TI</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">>=</span> <span class="n">start_date</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">end_date</span><span class="p">:</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">TI</span><span class="o">.</span><span class="n">execution_date</span> <span class="o"><=</span> <span class="n">end_date</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">only_failed</span><span class="p">:</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">or_</span><span class="p">(</span> |
| <span class="n">TI</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">State</span><span class="o">.</span><span class="n">FAILED</span><span class="p">,</span> |
| <span class="n">TI</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">State</span><span class="o">.</span><span class="n">UPSTREAM_FAILED</span><span class="p">))</span> |
| <span class="k">if</span> <span class="n">only_running</span><span class="p">:</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">TI</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">State</span><span class="o">.</span><span class="n">RUNNING</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="n">include_subdags</span><span class="p">:</span> |
| <span class="kn">from</span> <span class="nn">airflow.sensors.external_task_sensor</span> <span class="k">import</span> <span class="n">ExternalTaskMarker</span> |
| |
| <span class="c1"># Recursively find external tasks indicated by ExternalTaskMarker</span> |
| <span class="n">instances</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">all</span><span class="p">()</span> |
| <span class="k">for</span> <span class="n">ti</span> <span class="ow">in</span> <span class="n">instances</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">ti</span><span class="o">.</span><span class="n">operator</span> <span class="o">==</span> <span class="n">ExternalTaskMarker</span><span class="o">.</span><span class="vm">__name__</span><span class="p">:</span> |
| <span class="n">ti</span><span class="o">.</span><span class="n">task</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_task</span><span class="p">(</span><span class="n">ti</span><span class="o">.</span><span class="n">task_id</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="n">recursion_depth</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="c1"># Maximum recursion depth allowed is the recursion_depth of the first</span> |
| <span class="c1"># ExternalTaskMarker in the tasks to be cleared.</span> |
| <span class="n">max_recursion_depth</span> <span class="o">=</span> <span class="n">ti</span><span class="o">.</span><span class="n">task</span><span class="o">.</span><span class="n">recursion_depth</span> |
| |
| <span class="k">if</span> <span class="n">recursion_depth</span> <span class="o">+</span> <span class="mi">1</span> <span class="o">></span> <span class="n">max_recursion_depth</span><span class="p">:</span> |
| <span class="c1"># Prevent cycles or accidents.</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"Maximum recursion depth </span><span class="si">{}</span><span class="s2"> reached for </span><span class="si">{}</span><span class="s2"> </span><span class="si">{}</span><span class="s2">. "</span> |
| <span class="s2">"Attempted to clear too many tasks "</span> |
| <span class="s2">"or there may be a cyclic dependency."</span> |
| <span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">max_recursion_depth</span><span class="p">,</span> |
| <span class="n">ExternalTaskMarker</span><span class="o">.</span><span class="vm">__name__</span><span class="p">,</span> <span class="n">ti</span><span class="o">.</span><span class="n">task_id</span><span class="p">))</span> |
| <span class="n">ti</span><span class="o">.</span><span class="n">render_templates</span><span class="p">()</span> |
| <span class="n">external_tis</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">TI</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">TI</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="n">ti</span><span class="o">.</span><span class="n">task</span><span class="o">.</span><span class="n">external_dag_id</span><span class="p">,</span> |
| <span class="n">TI</span><span class="o">.</span><span class="n">task_id</span> <span class="o">==</span> <span class="n">ti</span><span class="o">.</span><span class="n">task</span><span class="o">.</span><span class="n">external_task_id</span><span class="p">,</span> |
| <span class="n">TI</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">==</span> |
| <span class="n">pendulum</span><span class="o">.</span><span class="n">parse</span><span class="p">(</span><span class="n">ti</span><span class="o">.</span><span class="n">task</span><span class="o">.</span><span class="n">execution_date</span><span class="p">))</span> |
| |
| <span class="k">for</span> <span class="n">tii</span> <span class="ow">in</span> <span class="n">external_tis</span><span class="p">:</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">dag_bag</span><span class="p">:</span> |
| <span class="n">dag_bag</span> <span class="o">=</span> <span class="n">DagBag</span><span class="p">()</span> |
| <span class="n">external_dag</span> <span class="o">=</span> <span class="n">dag_bag</span><span class="o">.</span><span class="n">get_dag</span><span class="p">(</span><span class="n">tii</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">external_dag</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"Could not find dag </span><span class="si">{}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">tii</span><span class="o">.</span><span class="n">dag_id</span><span class="p">))</span> |
| <span class="n">downstream</span> <span class="o">=</span> <span class="n">external_dag</span><span class="o">.</span><span class="n">sub_dag</span><span class="p">(</span> |
| <span class="n">task_regex</span><span class="o">=</span><span class="sa">r</span><span class="s2">"^</span><span class="si">{}</span><span class="s2">$"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">tii</span><span class="o">.</span><span class="n">task_id</span><span class="p">),</span> |
| <span class="n">include_upstream</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">include_downstream</span><span class="o">=</span><span class="kc">True</span> |
| <span class="p">)</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">union</span><span class="p">(</span><span class="n">downstream</span><span class="o">.</span><span class="n">clear</span><span class="p">(</span><span class="n">start_date</span><span class="o">=</span><span class="n">tii</span><span class="o">.</span><span class="n">execution_date</span><span class="p">,</span> |
| <span class="n">end_date</span><span class="o">=</span><span class="n">tii</span><span class="o">.</span><span class="n">execution_date</span><span class="p">,</span> |
| <span class="n">only_failed</span><span class="o">=</span><span class="n">only_failed</span><span class="p">,</span> |
| <span class="n">only_running</span><span class="o">=</span><span class="n">only_running</span><span class="p">,</span> |
| <span class="n">confirm_prompt</span><span class="o">=</span><span class="n">confirm_prompt</span><span class="p">,</span> |
| <span class="n">include_subdags</span><span class="o">=</span><span class="n">include_subdags</span><span class="p">,</span> |
| <span class="n">include_parentdag</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">reset_dag_runs</span><span class="o">=</span><span class="n">reset_dag_runs</span><span class="p">,</span> |
| <span class="n">get_tis</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> |
| <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> |
| <span class="n">recursion_depth</span><span class="o">=</span><span class="n">recursion_depth</span> <span class="o">+</span> <span class="mi">1</span><span class="p">,</span> |
| <span class="n">max_recursion_depth</span><span class="o">=</span><span class="n">max_recursion_depth</span><span class="p">,</span> |
| <span class="n">dag_bag</span><span class="o">=</span><span class="n">dag_bag</span><span class="p">))</span> |
| |
| <span class="k">if</span> <span class="n">get_tis</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">tis</span> |
| |
| <span class="k">if</span> <span class="n">dry_run</span><span class="p">:</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">all</span><span class="p">()</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">expunge_all</span><span class="p">()</span> |
| <span class="k">return</span> <span class="n">tis</span> |
| |
| <span class="n">count</span> <span class="o">=</span> <span class="n">tis</span><span class="o">.</span><span class="n">count</span><span class="p">()</span> |
| <span class="n">do_it</span> <span class="o">=</span> <span class="kc">True</span> |
| <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="k">return</span> <span class="mi">0</span> |
| <span class="k">if</span> <span class="n">confirm_prompt</span><span class="p">:</span> |
| <span class="n">ti_list</span> <span class="o">=</span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span><span class="o">.</span><span class="n">join</span><span class="p">([</span><span class="nb">str</span><span class="p">(</span><span class="n">t</span><span class="p">)</span> <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="n">tis</span><span class="p">])</span> |
| <span class="n">question</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="s2">"You are about to delete these </span><span class="si">{count}</span><span class="s2"> tasks:</span><span class="se">\n</span><span class="s2">"</span> |
| <span class="s2">"</span><span class="si">{ti_list}</span><span class="se">\n\n</span><span class="s2">"</span> |
| <span class="s2">"Are you sure? (yes/no): "</span><span class="p">)</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">count</span><span class="o">=</span><span class="n">count</span><span class="p">,</span> <span class="n">ti_list</span><span class="o">=</span><span class="n">ti_list</span><span class="p">)</span> |
| <span class="n">do_it</span> <span class="o">=</span> <span class="n">utils</span><span class="o">.</span><span class="n">helpers</span><span class="o">.</span><span class="n">ask_yesno</span><span class="p">(</span><span class="n">question</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="n">do_it</span><span class="p">:</span> |
| <span class="n">clear_task_instances</span><span class="p">(</span><span class="n">tis</span><span class="o">.</span><span class="n">all</span><span class="p">(),</span> |
| <span class="n">session</span><span class="p">,</span> |
| <span class="n">dag</span><span class="o">=</span><span class="bp">self</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="k">if</span> <span class="n">reset_dag_runs</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">set_dag_runs_state</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> |
| <span class="n">start_date</span><span class="o">=</span><span class="n">start_date</span><span class="p">,</span> |
| <span class="n">end_date</span><span class="o">=</span><span class="n">end_date</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">count</span> <span class="o">=</span> <span class="mi">0</span> |
| <span class="nb">print</span><span class="p">(</span><span class="s2">"Bail. Nothing was cleared."</span><span class="p">)</span> |
| |
| <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span> |
| <span class="k">return</span> <span class="n">count</span></div> |
| |
| <span class="nd">@classmethod</span> |
| <div class="viewcode-block" id="DAG.clear_dags"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.clear_dags">[docs]</a> <span class="k">def</span> <span class="nf">clear_dags</span><span class="p">(</span> |
| <span class="bp">cls</span><span class="p">,</span> <span class="n">dags</span><span class="p">,</span> |
| <span class="n">start_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">end_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">only_failed</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">only_running</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">confirm_prompt</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">include_subdags</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> |
| <span class="n">include_parentdag</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">reset_dag_runs</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> |
| <span class="n">dry_run</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="p">):</span> |
| <span class="n">all_tis</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="k">for</span> <span class="n">dag</span> <span class="ow">in</span> <span class="n">dags</span><span class="p">:</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">dag</span><span class="o">.</span><span class="n">clear</span><span class="p">(</span> |
| <span class="n">start_date</span><span class="o">=</span><span class="n">start_date</span><span class="p">,</span> |
| <span class="n">end_date</span><span class="o">=</span><span class="n">end_date</span><span class="p">,</span> |
| <span class="n">only_failed</span><span class="o">=</span><span class="n">only_failed</span><span class="p">,</span> |
| <span class="n">only_running</span><span class="o">=</span><span class="n">only_running</span><span class="p">,</span> |
| <span class="n">confirm_prompt</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">include_subdags</span><span class="o">=</span><span class="n">include_subdags</span><span class="p">,</span> |
| <span class="n">include_parentdag</span><span class="o">=</span><span class="n">include_parentdag</span><span class="p">,</span> |
| <span class="n">reset_dag_runs</span><span class="o">=</span><span class="n">reset_dag_runs</span><span class="p">,</span> |
| <span class="n">dry_run</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> |
| <span class="n">all_tis</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">tis</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="n">dry_run</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">all_tis</span> |
| |
| <span class="n">count</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">all_tis</span><span class="p">)</span> |
| <span class="n">do_it</span> <span class="o">=</span> <span class="kc">True</span> |
| <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="nb">print</span><span class="p">(</span><span class="s2">"Nothing to clear."</span><span class="p">)</span> |
| <span class="k">return</span> <span class="mi">0</span> |
| <span class="k">if</span> <span class="n">confirm_prompt</span><span class="p">:</span> |
| <span class="n">ti_list</span> <span class="o">=</span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span><span class="o">.</span><span class="n">join</span><span class="p">([</span><span class="nb">str</span><span class="p">(</span><span class="n">t</span><span class="p">)</span> <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="n">all_tis</span><span class="p">])</span> |
| <span class="n">question</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="s2">"You are about to delete these </span><span class="si">{}</span><span class="s2"> tasks:</span><span class="se">\n</span><span class="s2">"</span> |
| <span class="s2">"</span><span class="si">{}</span><span class="se">\n\n</span><span class="s2">"</span> |
| <span class="s2">"Are you sure? (yes/no): "</span><span class="p">)</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">count</span><span class="p">,</span> <span class="n">ti_list</span><span class="p">)</span> |
| <span class="n">do_it</span> <span class="o">=</span> <span class="n">utils</span><span class="o">.</span><span class="n">helpers</span><span class="o">.</span><span class="n">ask_yesno</span><span class="p">(</span><span class="n">question</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="n">do_it</span><span class="p">:</span> |
| <span class="k">for</span> <span class="n">dag</span> <span class="ow">in</span> <span class="n">dags</span><span class="p">:</span> |
| <span class="n">dag</span><span class="o">.</span><span class="n">clear</span><span class="p">(</span><span class="n">start_date</span><span class="o">=</span><span class="n">start_date</span><span class="p">,</span> |
| <span class="n">end_date</span><span class="o">=</span><span class="n">end_date</span><span class="p">,</span> |
| <span class="n">only_failed</span><span class="o">=</span><span class="n">only_failed</span><span class="p">,</span> |
| <span class="n">only_running</span><span class="o">=</span><span class="n">only_running</span><span class="p">,</span> |
| <span class="n">confirm_prompt</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">include_subdags</span><span class="o">=</span><span class="n">include_subdags</span><span class="p">,</span> |
| <span class="n">reset_dag_runs</span><span class="o">=</span><span class="n">reset_dag_runs</span><span class="p">,</span> |
| <span class="n">dry_run</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">count</span> <span class="o">=</span> <span class="mi">0</span> |
| <span class="nb">print</span><span class="p">(</span><span class="s2">"Bail. Nothing was cleared."</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">count</span></div> |
| |
| <div class="viewcode-block" id="DAG.__deepcopy__"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.__deepcopy__">[docs]</a> <span class="k">def</span> <span class="nf">__deepcopy__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">memo</span><span class="p">):</span> |
| <span class="c1"># Swiwtcharoo to go around deepcopying objects coming through the</span> |
| <span class="c1"># backdoor</span> |
| <span class="bp">cls</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="bp">cls</span><span class="o">.</span><span class="fm">__new__</span><span class="p">(</span><span class="bp">cls</span><span class="p">)</span> |
| <span class="n">memo</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)]</span> <span class="o">=</span> <span class="n">result</span> |
| <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="nb">list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="vm">__dict__</span><span class="o">.</span><span class="n">items</span><span class="p">()):</span> |
| <span class="k">if</span> <span class="n">k</span> <span class="ow">not</span> <span class="ow">in</span> <span class="p">(</span><span class="s1">'user_defined_macros'</span><span class="p">,</span> <span class="s1">'user_defined_filters'</span><span class="p">,</span> <span class="s1">'params'</span><span class="p">):</span> |
| <span class="nb">setattr</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="n">k</span><span class="p">,</span> <span class="n">copy</span><span class="o">.</span><span class="n">deepcopy</span><span class="p">(</span><span class="n">v</span><span class="p">,</span> <span class="n">memo</span><span class="p">))</span> |
| |
| <span class="n">result</span><span class="o">.</span><span class="n">user_defined_macros</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">user_defined_macros</span> |
| <span class="n">result</span><span class="o">.</span><span class="n">user_defined_filters</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">user_defined_filters</span> |
| <span class="n">result</span><span class="o">.</span><span class="n">params</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">params</span> |
| <span class="k">return</span> <span class="n">result</span></div> |
| |
| <div class="viewcode-block" id="DAG.sub_dag"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.sub_dag">[docs]</a> <span class="k">def</span> <span class="nf">sub_dag</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">task_regex</span><span class="p">,</span> <span class="n">include_downstream</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">include_upstream</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns a subset of the current dag as a deep copy of the current dag</span> |
| <span class="sd"> based on a regex that should match one or many tasks, and includes</span> |
| <span class="sd"> upstream and downstream neighbours based on the flag passed.</span> |
| <span class="sd"> """</span> |
| |
| <span class="c1"># deep-copying self.task_dict takes a long time, and we don't want all</span> |
| <span class="c1"># the tasks anyway, so we copy the tasks manually later</span> |
| <span class="n">task_dict</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span> <span class="o">=</span> <span class="p">{}</span> |
| <span class="n">dag</span> <span class="o">=</span> <span class="n">copy</span><span class="o">.</span><span class="n">deepcopy</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span> <span class="o">=</span> <span class="n">task_dict</span> |
| |
| <span class="n">regex_match</span> <span class="o">=</span> <span class="p">[</span> |
| <span class="n">t</span> <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span> <span class="k">if</span> <span class="n">re</span><span class="o">.</span><span class="n">findall</span><span class="p">(</span><span class="n">task_regex</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">task_id</span><span class="p">)]</span> |
| <span class="n">also_include</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="n">regex_match</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">include_downstream</span><span class="p">:</span> |
| <span class="n">also_include</span> <span class="o">+=</span> <span class="n">t</span><span class="o">.</span><span class="n">get_flat_relatives</span><span class="p">(</span><span class="n">upstream</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">include_upstream</span><span class="p">:</span> |
| <span class="n">also_include</span> <span class="o">+=</span> <span class="n">t</span><span class="o">.</span><span class="n">get_flat_relatives</span><span class="p">(</span><span class="n">upstream</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> |
| |
| <span class="c1"># Compiling the unique list of tasks that made the cut</span> |
| <span class="c1"># Make sure to not recursively deepcopy the dag while copying the task</span> |
| <span class="n">dag</span><span class="o">.</span><span class="n">task_dict</span> <span class="o">=</span> <span class="p">{</span><span class="n">t</span><span class="o">.</span><span class="n">task_id</span><span class="p">:</span> <span class="n">copy</span><span class="o">.</span><span class="n">deepcopy</span><span class="p">(</span><span class="n">t</span><span class="p">,</span> <span class="p">{</span><span class="nb">id</span><span class="p">(</span><span class="n">t</span><span class="o">.</span><span class="n">dag</span><span class="p">):</span> <span class="n">dag</span><span class="p">})</span> |
| <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="n">regex_match</span> <span class="o">+</span> <span class="n">also_include</span><span class="p">}</span> |
| <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="n">dag</span><span class="o">.</span><span class="n">tasks</span><span class="p">:</span> |
| <span class="c1"># Removing upstream/downstream references to tasks that did not</span> |
| <span class="c1"># made the cut</span> |
| <span class="n">t</span><span class="o">.</span><span class="n">_upstream_task_ids</span> <span class="o">=</span> <span class="n">t</span><span class="o">.</span><span class="n">_upstream_task_ids</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">dag</span><span class="o">.</span><span class="n">task_dict</span><span class="o">.</span><span class="n">keys</span><span class="p">())</span> |
| <span class="n">t</span><span class="o">.</span><span class="n">_downstream_task_ids</span> <span class="o">=</span> <span class="n">t</span><span class="o">.</span><span class="n">_downstream_task_ids</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span> |
| <span class="n">dag</span><span class="o">.</span><span class="n">task_dict</span><span class="o">.</span><span class="n">keys</span><span class="p">())</span> |
| |
| <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">dag</span><span class="o">.</span><span class="n">tasks</span><span class="p">)</span> <span class="o"><</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">):</span> |
| <span class="n">dag</span><span class="o">.</span><span class="n">partial</span> <span class="o">=</span> <span class="kc">True</span> |
| |
| <span class="k">return</span> <span class="n">dag</span></div> |
| |
| <div class="viewcode-block" id="DAG.has_task"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.has_task">[docs]</a> <span class="k">def</span> <span class="nf">has_task</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">task_id</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">task_id</span> <span class="ow">in</span> <span class="p">(</span><span class="n">t</span><span class="o">.</span><span class="n">task_id</span> <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="DAG.get_task"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.get_task">[docs]</a> <span class="k">def</span> <span class="nf">get_task</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">task_id</span><span class="p">):</span> |
| <span class="k">if</span> <span class="n">task_id</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span><span class="p">:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span><span class="p">[</span><span class="n">task_id</span><span class="p">]</span> |
| <span class="k">raise</span> <span class="n">TaskNotFound</span><span class="p">(</span><span class="s2">"Task </span><span class="si">{task_id}</span><span class="s2"> not found"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">task_id</span><span class="o">=</span><span class="n">task_id</span><span class="p">))</span></div> |
| |
| <div class="viewcode-block" id="DAG.pickle_info"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.pickle_info">[docs]</a> <span class="k">def</span> <span class="nf">pickle_info</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="n">d</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">()</span> |
| <span class="n">d</span><span class="p">[</span><span class="s1">'is_picklable'</span><span class="p">]</span> <span class="o">=</span> <span class="kc">True</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">dttm</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> |
| <span class="n">pickled</span> <span class="o">=</span> <span class="n">pickle</span><span class="o">.</span><span class="n">dumps</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> |
| <span class="n">d</span><span class="p">[</span><span class="s1">'pickle_len'</span><span class="p">]</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">pickled</span><span class="p">)</span> |
| <span class="n">d</span><span class="p">[</span><span class="s1">'pickling_duration'</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"</span><span class="si">{}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> <span class="o">-</span> <span class="n">dttm</span><span class="p">)</span> |
| <span class="k">except</span> <span class="ne">Exception</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="n">e</span><span class="p">)</span> |
| <span class="n">d</span><span class="p">[</span><span class="s1">'is_picklable'</span><span class="p">]</span> <span class="o">=</span> <span class="kc">False</span> |
| <span class="n">d</span><span class="p">[</span><span class="s1">'stacktrace'</span><span class="p">]</span> <span class="o">=</span> <span class="n">traceback</span><span class="o">.</span><span class="n">format_exc</span><span class="p">()</span> |
| <span class="k">return</span> <span class="n">d</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.pickle"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.pickle">[docs]</a> <span class="k">def</span> <span class="nf">pickle</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="n">dag</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span> |
| <span class="n">DagModel</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DagModel</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span><span class="o">.</span><span class="n">first</span><span class="p">()</span> |
| <span class="n">dp</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="k">if</span> <span class="n">dag</span> <span class="ow">and</span> <span class="n">dag</span><span class="o">.</span><span class="n">pickle_id</span><span class="p">:</span> |
| <span class="n">dp</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">DagPickle</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span> |
| <span class="n">DagPickle</span><span class="o">.</span><span class="n">id</span> <span class="o">==</span> <span class="n">dag</span><span class="o">.</span><span class="n">pickle_id</span><span class="p">)</span><span class="o">.</span><span class="n">first</span><span class="p">()</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">dp</span> <span class="ow">or</span> <span class="n">dp</span><span class="o">.</span><span class="n">pickle</span> <span class="o">!=</span> <span class="bp">self</span><span class="p">:</span> |
| <span class="n">dp</span> <span class="o">=</span> <span class="n">DagPickle</span><span class="p">(</span><span class="n">dag</span><span class="o">=</span><span class="bp">self</span><span class="p">)</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">dp</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">last_pickled</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">pickle_id</span> <span class="o">=</span> <span class="n">dp</span><span class="o">.</span><span class="n">id</span> |
| |
| <span class="k">return</span> <span class="n">dp</span></div> |
| |
| <div class="viewcode-block" id="DAG.tree_view"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.tree_view">[docs]</a> <span class="k">def</span> <span class="nf">tree_view</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""Print an ASCII tree representation of the DAG."""</span> |
| <span class="k">def</span> <span class="nf">get_downstream</span><span class="p">(</span><span class="n">task</span><span class="p">,</span> <span class="n">level</span><span class="o">=</span><span class="mi">0</span><span class="p">):</span> |
| <span class="n">line</span> <span class="o">=</span> <span class="p">(</span><span class="s2">" "</span> <span class="o">*</span> <span class="n">level</span> <span class="o">*</span> <span class="mi">4</span><span class="p">)</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">task</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">six</span><span class="o">.</span><span class="n">PY2</span><span class="p">:</span> |
| <span class="n">line</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s2">"utf-8"</span><span class="p">)</span> |
| <span class="nb">print</span><span class="p">(</span><span class="n">line</span><span class="p">)</span> |
| <span class="n">level</span> <span class="o">+=</span> <span class="mi">1</span> |
| <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="n">task</span><span class="o">.</span><span class="n">downstream_list</span><span class="p">:</span> |
| <span class="n">get_downstream</span><span class="p">(</span><span class="n">t</span><span class="p">,</span> <span class="n">level</span><span class="p">)</span> |
| |
| <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">roots</span><span class="p">:</span> |
| <span class="n">get_downstream</span><span class="p">(</span><span class="n">t</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="DAG.add_task"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.add_task">[docs]</a> <span class="k">def</span> <span class="nf">add_task</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">task</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Add a task to the DAG</span> |
| |
| <span class="sd"> :param task: the task you want to add</span> |
| <span class="sd"> :type task: task</span> |
| <span class="sd"> """</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">start_date</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">task</span><span class="o">.</span><span class="n">start_date</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"Task is missing the start_date parameter"</span><span class="p">)</span> |
| <span class="c1"># if the task has no start date, assign it the same as the DAG</span> |
| <span class="k">elif</span> <span class="ow">not</span> <span class="n">task</span><span class="o">.</span><span class="n">start_date</span><span class="p">:</span> |
| <span class="n">task</span><span class="o">.</span><span class="n">start_date</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">start_date</span> |
| <span class="c1"># otherwise, the task will start on the later of its own start date and</span> |
| <span class="c1"># the DAG's start date</span> |
| <span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">start_date</span><span class="p">:</span> |
| <span class="n">task</span><span class="o">.</span><span class="n">start_date</span> <span class="o">=</span> <span class="nb">max</span><span class="p">(</span><span class="n">task</span><span class="o">.</span><span class="n">start_date</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">start_date</span><span class="p">)</span> |
| |
| <span class="c1"># if the task has no end date, assign it the same as the dag</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">task</span><span class="o">.</span><span class="n">end_date</span><span class="p">:</span> |
| <span class="n">task</span><span class="o">.</span><span class="n">end_date</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">end_date</span> |
| <span class="c1"># otherwise, the task will end on the earlier of its own end date and</span> |
| <span class="c1"># the DAG's end date</span> |
| <span class="k">elif</span> <span class="n">task</span><span class="o">.</span><span class="n">end_date</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">end_date</span><span class="p">:</span> |
| <span class="n">task</span><span class="o">.</span><span class="n">end_date</span> <span class="o">=</span> <span class="nb">min</span><span class="p">(</span><span class="n">task</span><span class="o">.</span><span class="n">end_date</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">end_date</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="n">task</span><span class="o">.</span><span class="n">task_id</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span><span class="p">:</span> |
| <span class="c1"># TODO: raise an error in Airflow 2.0</span> |
| <span class="n">warnings</span><span class="o">.</span><span class="n">warn</span><span class="p">(</span> |
| <span class="s1">'The requested task could not be added to the DAG because a '</span> |
| <span class="s1">'task with task_id </span><span class="si">{}</span><span class="s1"> is already in the DAG. Starting in '</span> |
| <span class="s1">'Airflow 2.0, trying to overwrite a task will raise an '</span> |
| <span class="s1">'exception.'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">task</span><span class="o">.</span><span class="n">task_id</span><span class="p">),</span> |
| <span class="n">category</span><span class="o">=</span><span class="ne">PendingDeprecationWarning</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span><span class="p">[</span><span class="n">task</span><span class="o">.</span><span class="n">task_id</span><span class="p">]</span> <span class="o">=</span> <span class="n">task</span> |
| <span class="n">task</span><span class="o">.</span><span class="n">dag</span> <span class="o">=</span> <span class="bp">self</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">task_count</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="DAG.add_tasks"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.add_tasks">[docs]</a> <span class="k">def</span> <span class="nf">add_tasks</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">tasks</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Add a list of tasks to the DAG</span> |
| |
| <span class="sd"> :param tasks: a lit of tasks you want to add</span> |
| <span class="sd"> :type tasks: list of tasks</span> |
| <span class="sd"> """</span> |
| <span class="k">for</span> <span class="n">task</span> <span class="ow">in</span> <span class="n">tasks</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">add_task</span><span class="p">(</span><span class="n">task</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="DAG.run"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.run">[docs]</a> <span class="k">def</span> <span class="nf">run</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> |
| <span class="n">start_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">end_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">mark_success</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">local</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">executor</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">donot_pickle</span><span class="o">=</span><span class="n">conf</span><span class="o">.</span><span class="n">getboolean</span><span class="p">(</span><span class="s1">'core'</span><span class="p">,</span> <span class="s1">'donot_pickle'</span><span class="p">),</span> |
| <span class="n">ignore_task_deps</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">ignore_first_depends_on_past</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">pool</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">delay_on_limit_secs</span><span class="o">=</span><span class="mf">1.0</span><span class="p">,</span> |
| <span class="n">verbose</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">conf</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">rerun_failed_tasks</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">run_backwards</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Runs the DAG.</span> |
| |
| <span class="sd"> :param start_date: the start date of the range to run</span> |
| <span class="sd"> :type start_date: datetime.datetime</span> |
| <span class="sd"> :param end_date: the end date of the range to run</span> |
| <span class="sd"> :type end_date: datetime.datetime</span> |
| <span class="sd"> :param mark_success: True to mark jobs as succeeded without running them</span> |
| <span class="sd"> :type mark_success: bool</span> |
| <span class="sd"> :param local: True to run the tasks using the LocalExecutor</span> |
| <span class="sd"> :type local: bool</span> |
| <span class="sd"> :param executor: The executor instance to run the tasks</span> |
| <span class="sd"> :type executor: airflow.executor.BaseExecutor</span> |
| <span class="sd"> :param donot_pickle: True to avoid pickling DAG object and send to workers</span> |
| <span class="sd"> :type donot_pickle: bool</span> |
| <span class="sd"> :param ignore_task_deps: True to skip upstream tasks</span> |
| <span class="sd"> :type ignore_task_deps: bool</span> |
| <span class="sd"> :param ignore_first_depends_on_past: True to ignore depends_on_past</span> |
| <span class="sd"> dependencies for the first set of tasks only</span> |
| <span class="sd"> :type ignore_first_depends_on_past: bool</span> |
| <span class="sd"> :param pool: Resource pool to use</span> |
| <span class="sd"> :type pool: str</span> |
| <span class="sd"> :param delay_on_limit_secs: Time in seconds to wait before next attempt to run</span> |
| <span class="sd"> dag run when max_active_runs limit has been reached</span> |
| <span class="sd"> :type delay_on_limit_secs: float</span> |
| <span class="sd"> :param verbose: Make logging output more verbose</span> |
| <span class="sd"> :type verbose: bool</span> |
| <span class="sd"> :param conf: user defined dictionary passed from CLI</span> |
| <span class="sd"> :type conf: dict</span> |
| <span class="sd"> :param rerun_failed_tasks:</span> |
| <span class="sd"> :type: bool</span> |
| <span class="sd"> :param run_backwards:</span> |
| <span class="sd"> :type: bool</span> |
| |
| <span class="sd"> """</span> |
| <span class="kn">from</span> <span class="nn">airflow.jobs</span> <span class="k">import</span> <span class="n">BackfillJob</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">executor</span> <span class="ow">and</span> <span class="n">local</span><span class="p">:</span> |
| <span class="n">executor</span> <span class="o">=</span> <span class="n">LocalExecutor</span><span class="p">()</span> |
| <span class="k">elif</span> <span class="ow">not</span> <span class="n">executor</span><span class="p">:</span> |
| <span class="n">executor</span> <span class="o">=</span> <span class="n">get_default_executor</span><span class="p">()</span> |
| <span class="n">job</span> <span class="o">=</span> <span class="n">BackfillJob</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> |
| <span class="n">start_date</span><span class="o">=</span><span class="n">start_date</span><span class="p">,</span> |
| <span class="n">end_date</span><span class="o">=</span><span class="n">end_date</span><span class="p">,</span> |
| <span class="n">mark_success</span><span class="o">=</span><span class="n">mark_success</span><span class="p">,</span> |
| <span class="n">executor</span><span class="o">=</span><span class="n">executor</span><span class="p">,</span> |
| <span class="n">donot_pickle</span><span class="o">=</span><span class="n">donot_pickle</span><span class="p">,</span> |
| <span class="n">ignore_task_deps</span><span class="o">=</span><span class="n">ignore_task_deps</span><span class="p">,</span> |
| <span class="n">ignore_first_depends_on_past</span><span class="o">=</span><span class="n">ignore_first_depends_on_past</span><span class="p">,</span> |
| <span class="n">pool</span><span class="o">=</span><span class="n">pool</span><span class="p">,</span> |
| <span class="n">delay_on_limit_secs</span><span class="o">=</span><span class="n">delay_on_limit_secs</span><span class="p">,</span> |
| <span class="n">verbose</span><span class="o">=</span><span class="n">verbose</span><span class="p">,</span> |
| <span class="n">conf</span><span class="o">=</span><span class="n">conf</span><span class="p">,</span> |
| <span class="n">rerun_failed_tasks</span><span class="o">=</span><span class="n">rerun_failed_tasks</span><span class="p">,</span> |
| <span class="n">run_backwards</span><span class="o">=</span><span class="n">run_backwards</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="n">job</span><span class="o">.</span><span class="n">run</span><span class="p">()</span></div> |
| |
| <div class="viewcode-block" id="DAG.cli"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.cli">[docs]</a> <span class="k">def</span> <span class="nf">cli</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Exposes a CLI specific to this DAG</span> |
| <span class="sd"> """</span> |
| <span class="kn">from</span> <span class="nn">airflow.bin</span> <span class="k">import</span> <span class="n">cli</span> |
| <span class="n">parser</span> <span class="o">=</span> <span class="n">cli</span><span class="o">.</span><span class="n">CLIFactory</span><span class="o">.</span><span class="n">get_parser</span><span class="p">(</span><span class="n">dag_parser</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> |
| <span class="n">args</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">parse_args</span><span class="p">()</span> |
| <span class="n">args</span><span class="o">.</span><span class="n">func</span><span class="p">(</span><span class="n">args</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.create_dagrun"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.create_dagrun">[docs]</a> <span class="k">def</span> <span class="nf">create_dagrun</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> |
| <span class="n">run_id</span><span class="p">,</span> |
| <span class="n">state</span><span class="p">,</span> |
| <span class="n">execution_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">start_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">external_trigger</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">conf</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Creates a dag run from this dag including the tasks associated with this dag.</span> |
| <span class="sd"> Returns the dag run.</span> |
| |
| <span class="sd"> :param run_id: defines the the run id for this dag run</span> |
| <span class="sd"> :type run_id: str</span> |
| <span class="sd"> :param execution_date: the execution date of this dag run</span> |
| <span class="sd"> :type execution_date: datetime.datetime</span> |
| <span class="sd"> :param state: the state of the dag run</span> |
| <span class="sd"> :type state: airflow.utils.state.State</span> |
| <span class="sd"> :param start_date: the date this dag run should be evaluated</span> |
| <span class="sd"> :type start_date: datetime</span> |
| <span class="sd"> :param external_trigger: whether this dag run is externally triggered</span> |
| <span class="sd"> :type external_trigger: bool</span> |
| <span class="sd"> :param session: database session</span> |
| <span class="sd"> :type session: sqlalchemy.orm.session.Session</span> |
| <span class="sd"> """</span> |
| <span class="n">run</span> <span class="o">=</span> <span class="n">DagRun</span><span class="p">(</span> |
| <span class="n">dag_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> |
| <span class="n">run_id</span><span class="o">=</span><span class="n">run_id</span><span class="p">,</span> |
| <span class="n">execution_date</span><span class="o">=</span><span class="n">execution_date</span><span class="p">,</span> |
| <span class="n">start_date</span><span class="o">=</span><span class="n">start_date</span><span class="p">,</span> |
| <span class="n">external_trigger</span><span class="o">=</span><span class="n">external_trigger</span><span class="p">,</span> |
| <span class="n">conf</span><span class="o">=</span><span class="n">conf</span><span class="p">,</span> |
| <span class="n">state</span><span class="o">=</span><span class="n">state</span> |
| <span class="p">)</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">run</span><span class="p">)</span> |
| |
| <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span> |
| |
| <span class="n">run</span><span class="o">.</span><span class="n">dag</span> <span class="o">=</span> <span class="bp">self</span> |
| |
| <span class="c1"># create the associated task instances</span> |
| <span class="c1"># state is None at the moment of creation</span> |
| <span class="n">run</span><span class="o">.</span><span class="n">verify_integrity</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">)</span> |
| |
| <span class="n">run</span><span class="o">.</span><span class="n">refresh_from_db</span><span class="p">()</span> |
| |
| <span class="k">return</span> <span class="n">run</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.sync_to_db"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.sync_to_db">[docs]</a> <span class="k">def</span> <span class="nf">sync_to_db</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">owner</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">sync_time</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Save attributes about this DAG to the DB. Note that this method</span> |
| <span class="sd"> can be called for both DAGs and SubDAGs. A SubDag is actually a</span> |
| <span class="sd"> SubDagOperator.</span> |
| |
| <span class="sd"> :param dag: the DAG object to save to the DB</span> |
| <span class="sd"> :type dag: airflow.models.DAG</span> |
| <span class="sd"> :param sync_time: The time that the DAG should be marked as sync'ed</span> |
| <span class="sd"> :type sync_time: datetime</span> |
| <span class="sd"> :return: None</span> |
| <span class="sd"> """</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.serialized_dag</span> <span class="k">import</span> <span class="n">SerializedDagModel</span> |
| |
| <span class="k">if</span> <span class="n">owner</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="n">owner</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">owner</span> |
| <span class="k">if</span> <span class="n">sync_time</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="n">sync_time</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> |
| |
| <span class="n">orm_dag</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span> |
| <span class="n">DagModel</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DagModel</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span><span class="o">.</span><span class="n">first</span><span class="p">()</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">orm_dag</span><span class="p">:</span> |
| <span class="n">orm_dag</span> <span class="o">=</span> <span class="n">DagModel</span><span class="p">(</span><span class="n">dag_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_paused_upon_creation</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="n">orm_dag</span><span class="o">.</span><span class="n">is_paused</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_paused_upon_creation</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Creating ORM DAG for </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">orm_dag</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_subdag</span><span class="p">:</span> |
| <span class="n">orm_dag</span><span class="o">.</span><span class="n">is_subdag</span> <span class="o">=</span> <span class="kc">True</span> |
| <span class="n">orm_dag</span><span class="o">.</span><span class="n">fileloc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">parent_dag</span><span class="o">.</span><span class="n">fileloc</span> |
| <span class="n">orm_dag</span><span class="o">.</span><span class="n">root_dag_id</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">parent_dag</span><span class="o">.</span><span class="n">dag_id</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">orm_dag</span><span class="o">.</span><span class="n">is_subdag</span> <span class="o">=</span> <span class="kc">False</span> |
| <span class="n">orm_dag</span><span class="o">.</span><span class="n">fileloc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">fileloc</span> |
| <span class="n">orm_dag</span><span class="o">.</span><span class="n">owners</span> <span class="o">=</span> <span class="n">owner</span> |
| <span class="n">orm_dag</span><span class="o">.</span><span class="n">is_active</span> <span class="o">=</span> <span class="kc">True</span> |
| <span class="n">orm_dag</span><span class="o">.</span><span class="n">last_scheduler_run</span> <span class="o">=</span> <span class="n">sync_time</span> |
| <span class="n">orm_dag</span><span class="o">.</span><span class="n">default_view</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_default_view</span> |
| <span class="n">orm_dag</span><span class="o">.</span><span class="n">description</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">description</span> |
| <span class="n">orm_dag</span><span class="o">.</span><span class="n">schedule_interval</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">schedule_interval</span> |
| <span class="n">orm_dag</span><span class="o">.</span><span class="n">tags</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_dagtags</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">)</span> |
| |
| <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span> |
| |
| <span class="k">for</span> <span class="n">subdag</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">subdags</span><span class="p">:</span> |
| <span class="n">subdag</span><span class="o">.</span><span class="n">sync_to_db</span><span class="p">(</span><span class="n">owner</span><span class="o">=</span><span class="n">owner</span><span class="p">,</span> <span class="n">sync_time</span><span class="o">=</span><span class="n">sync_time</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">)</span> |
| |
| <span class="c1"># Write DAGs to serialized_dag table in DB.</span> |
| <span class="c1"># subdags are not written into serialized_dag, because they are not displayed</span> |
| <span class="c1"># in the DAG list on UI. They are included in the serialized parent DAG.</span> |
| <span class="k">if</span> <span class="n">STORE_SERIALIZED_DAGS</span> <span class="ow">and</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_subdag</span><span class="p">:</span> |
| <span class="n">SerializedDagModel</span><span class="o">.</span><span class="n">write_dag</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> |
| <span class="n">min_update_interval</span><span class="o">=</span><span class="n">MIN_SERIALIZED_DAG_UPDATE_INTERVAL</span><span class="p">,</span> |
| <span class="n">session</span><span class="o">=</span><span class="n">session</span></div> |
| <span class="p">)</span> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.get_dagtags"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.get_dagtags">[docs]</a> <span class="k">def</span> <span class="nf">get_dagtags</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Creating a list of DagTags, if one is missing from the DB, will insert.</span> |
| |
| <span class="sd"> :return: The DagTag list.</span> |
| <span class="sd"> :rtype: list</span> |
| <span class="sd"> """</span> |
| <span class="n">tags</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">tags</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">tags</span> |
| |
| <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="nb">set</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">tags</span><span class="p">):</span> |
| <span class="n">tag</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span> |
| <span class="n">DagTag</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DagTag</span><span class="o">.</span><span class="n">name</span> <span class="o">==</span> <span class="n">name</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DagTag</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span><span class="o">.</span><span class="n">first</span><span class="p">()</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">tag</span><span class="p">:</span> |
| <span class="n">tag</span> <span class="o">=</span> <span class="n">DagTag</span><span class="p">(</span><span class="n">name</span><span class="o">=</span><span class="n">name</span><span class="p">,</span> <span class="n">dag_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">tag</span><span class="p">)</span> |
| <span class="n">tags</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">tag</span><span class="p">)</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span> |
| <span class="k">return</span> <span class="n">tags</span></div> |
| |
| <span class="nd">@staticmethod</span> |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.deactivate_unknown_dags"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.deactivate_unknown_dags">[docs]</a> <span class="k">def</span> <span class="nf">deactivate_unknown_dags</span><span class="p">(</span><span class="n">active_dag_ids</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Given a list of known DAGs, deactivate any other DAGs that are</span> |
| <span class="sd"> marked as active in the ORM</span> |
| |
| <span class="sd"> :param active_dag_ids: list of DAG IDs that are active</span> |
| <span class="sd"> :type active_dag_ids: list[unicode]</span> |
| <span class="sd"> :return: None</span> |
| <span class="sd"> """</span> |
| |
| <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">active_dag_ids</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="k">return</span> |
| <span class="k">for</span> <span class="n">dag</span> <span class="ow">in</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span> |
| <span class="n">DagModel</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="o">~</span><span class="n">DagModel</span><span class="o">.</span><span class="n">dag_id</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="n">active_dag_ids</span><span class="p">))</span><span class="o">.</span><span class="n">all</span><span class="p">():</span> |
| <span class="n">dag</span><span class="o">.</span><span class="n">is_active</span> <span class="o">=</span> <span class="kc">False</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">merge</span><span class="p">(</span><span class="n">dag</span><span class="p">)</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span></div> |
| |
| <span class="nd">@staticmethod</span> |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.deactivate_stale_dags"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.deactivate_stale_dags">[docs]</a> <span class="k">def</span> <span class="nf">deactivate_stale_dags</span><span class="p">(</span><span class="n">expiration_date</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Deactivate any DAGs that were last touched by the scheduler before</span> |
| <span class="sd"> the expiration date. These DAGs were likely deleted.</span> |
| |
| <span class="sd"> :param expiration_date: set inactive DAGs that were touched before this</span> |
| <span class="sd"> time</span> |
| <span class="sd"> :type expiration_date: datetime</span> |
| <span class="sd"> :return: None</span> |
| <span class="sd"> """</span> |
| <span class="n">log</span> <span class="o">=</span> <span class="n">LoggingMixin</span><span class="p">()</span><span class="o">.</span><span class="n">log</span> |
| <span class="k">for</span> <span class="n">dag</span> <span class="ow">in</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span> |
| <span class="n">DagModel</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DagModel</span><span class="o">.</span><span class="n">last_scheduler_run</span> <span class="o"><</span> <span class="n">expiration_date</span><span class="p">,</span> |
| <span class="n">DagModel</span><span class="o">.</span><span class="n">is_active</span><span class="p">)</span><span class="o">.</span><span class="n">all</span><span class="p">():</span> |
| <span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span> |
| <span class="s2">"Deactivating DAG ID </span><span class="si">%s</span><span class="s2"> since it was last touched by the scheduler at </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> |
| <span class="n">dag</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">dag</span><span class="o">.</span><span class="n">last_scheduler_run</span><span class="o">.</span><span class="n">isoformat</span><span class="p">()</span> |
| <span class="p">)</span> |
| <span class="n">dag</span><span class="o">.</span><span class="n">is_active</span> <span class="o">=</span> <span class="kc">False</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">merge</span><span class="p">(</span><span class="n">dag</span><span class="p">)</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span></div> |
| |
| <span class="nd">@staticmethod</span> |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DAG.get_num_task_instances"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.get_num_task_instances">[docs]</a> <span class="k">def</span> <span class="nf">get_num_task_instances</span><span class="p">(</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">task_ids</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">states</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns the number of task instances in the given DAG.</span> |
| |
| <span class="sd"> :param session: ORM session</span> |
| <span class="sd"> :param dag_id: ID of the DAG to get the task concurrency of</span> |
| <span class="sd"> :type dag_id: unicode</span> |
| <span class="sd"> :param task_ids: A list of valid task IDs for the given DAG</span> |
| <span class="sd"> :type task_ids: list[unicode]</span> |
| <span class="sd"> :param states: A list of states to filter by if supplied</span> |
| <span class="sd"> :type states: list[state]</span> |
| <span class="sd"> :return: The number of running tasks</span> |
| <span class="sd"> :rtype: int</span> |
| <span class="sd"> """</span> |
| <span class="n">qry</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">func</span><span class="o">.</span><span class="n">count</span><span class="p">(</span><span class="n">TaskInstance</span><span class="o">.</span><span class="n">task_id</span><span class="p">))</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span> |
| <span class="n">TaskInstance</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="n">dag_id</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="k">if</span> <span class="n">task_ids</span><span class="p">:</span> |
| <span class="n">qry</span> <span class="o">=</span> <span class="n">qry</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span> |
| <span class="n">TaskInstance</span><span class="o">.</span><span class="n">task_id</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="n">task_ids</span><span class="p">),</span> |
| <span class="p">)</span> |
| |
| <span class="k">if</span> <span class="n">states</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">if</span> <span class="kc">None</span> <span class="ow">in</span> <span class="n">states</span><span class="p">:</span> |
| <span class="n">qry</span> <span class="o">=</span> <span class="n">qry</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">or_</span><span class="p">(</span> |
| <span class="n">TaskInstance</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="n">states</span><span class="p">),</span> |
| <span class="n">TaskInstance</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">is_</span><span class="p">(</span><span class="kc">None</span><span class="p">)))</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">qry</span> <span class="o">=</span> <span class="n">qry</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">TaskInstance</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="n">states</span><span class="p">))</span> |
| <span class="k">return</span> <span class="n">qry</span><span class="o">.</span><span class="n">scalar</span><span class="p">()</span></div> |
| |
| <div class="viewcode-block" id="DAG.test_cycle"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.test_cycle">[docs]</a> <span class="k">def</span> <span class="nf">test_cycle</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Check to see if there are any cycles in the DAG. Returns False if no cycle found,</span> |
| <span class="sd"> otherwise raises exception.</span> |
| <span class="sd"> """</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.dagbag</span> <span class="k">import</span> <span class="n">DagBag</span> <span class="c1"># Avoid circular imports</span> |
| |
| <span class="c1"># default of int is 0 which corresponds to CYCLE_NEW</span> |
| <span class="n">visit_map</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="nb">int</span><span class="p">)</span> |
| <span class="k">for</span> <span class="n">task_id</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span><span class="o">.</span><span class="n">keys</span><span class="p">():</span> |
| <span class="c1"># print('starting %s' % task_id)</span> |
| <span class="k">if</span> <span class="n">visit_map</span><span class="p">[</span><span class="n">task_id</span><span class="p">]</span> <span class="o">==</span> <span class="n">DagBag</span><span class="o">.</span><span class="n">CYCLE_NEW</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_test_cycle_helper</span><span class="p">(</span><span class="n">visit_map</span><span class="p">,</span> <span class="n">task_id</span><span class="p">)</span> |
| <span class="k">return</span> <span class="kc">False</span></div> |
| |
| <div class="viewcode-block" id="DAG._test_cycle_helper"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG._test_cycle_helper">[docs]</a> <span class="k">def</span> <span class="nf">_test_cycle_helper</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">visit_map</span><span class="p">,</span> <span class="n">task_id</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Checks if a cycle exists from the input task using DFS traversal</span> |
| <span class="sd"> """</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.dagbag</span> <span class="k">import</span> <span class="n">DagBag</span> <span class="c1"># Avoid circular imports</span> |
| |
| <span class="c1"># print('Inspecting %s' % task_id)</span> |
| <span class="k">if</span> <span class="n">visit_map</span><span class="p">[</span><span class="n">task_id</span><span class="p">]</span> <span class="o">==</span> <span class="n">DagBag</span><span class="o">.</span><span class="n">CYCLE_DONE</span><span class="p">:</span> |
| <span class="k">return</span> <span class="kc">False</span> |
| |
| <span class="n">visit_map</span><span class="p">[</span><span class="n">task_id</span><span class="p">]</span> <span class="o">=</span> <span class="n">DagBag</span><span class="o">.</span><span class="n">CYCLE_IN_PROGRESS</span> |
| |
| <span class="n">task</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_dict</span><span class="p">[</span><span class="n">task_id</span><span class="p">]</span> |
| <span class="k">for</span> <span class="n">descendant_id</span> <span class="ow">in</span> <span class="n">task</span><span class="o">.</span><span class="n">get_direct_relative_ids</span><span class="p">():</span> |
| <span class="k">if</span> <span class="n">visit_map</span><span class="p">[</span><span class="n">descendant_id</span><span class="p">]</span> <span class="o">==</span> <span class="n">DagBag</span><span class="o">.</span><span class="n">CYCLE_IN_PROGRESS</span><span class="p">:</span> |
| <span class="n">msg</span> <span class="o">=</span> <span class="s2">"Cycle detected in DAG. Faulty task: </span><span class="si">{0}</span><span class="s2"> to </span><span class="si">{1}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span> |
| <span class="n">task_id</span><span class="p">,</span> <span class="n">descendant_id</span><span class="p">)</span> |
| <span class="k">raise</span> <span class="n">AirflowDagCycleException</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_test_cycle_helper</span><span class="p">(</span><span class="n">visit_map</span><span class="p">,</span> <span class="n">descendant_id</span><span class="p">)</span> |
| |
| <span class="n">visit_map</span><span class="p">[</span><span class="n">task_id</span><span class="p">]</span> <span class="o">=</span> <span class="n">DagBag</span><span class="o">.</span><span class="n">CYCLE_DONE</span></div> |
| |
| <span class="nd">@classmethod</span> |
| <div class="viewcode-block" id="DAG.get_serialized_fields"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DAG.get_serialized_fields">[docs]</a> <span class="k">def</span> <span class="nf">get_serialized_fields</span><span class="p">(</span><span class="bp">cls</span><span class="p">):</span> |
| <span class="sd">"""Stringified DAGs and operators contain exactly these fields."""</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">cls</span><span class="o">.</span><span class="n">__serialized_fields</span><span class="p">:</span> |
| <span class="bp">cls</span><span class="o">.</span><span class="n">__serialized_fields</span> <span class="o">=</span> <span class="nb">frozenset</span><span class="p">(</span><span class="nb">vars</span><span class="p">(</span><span class="n">DAG</span><span class="p">(</span><span class="n">dag_id</span><span class="o">=</span><span class="s1">'test'</span><span class="p">))</span><span class="o">.</span><span class="n">keys</span><span class="p">())</span> <span class="o">-</span> <span class="p">{</span> |
| <span class="s1">'parent_dag'</span><span class="p">,</span> <span class="s1">'_old_context_manager_dags'</span><span class="p">,</span> <span class="s1">'safe_dag_id'</span><span class="p">,</span> <span class="s1">'last_loaded'</span><span class="p">,</span> |
| <span class="s1">'_full_filepath'</span><span class="p">,</span> <span class="s1">'user_defined_filters'</span><span class="p">,</span> <span class="s1">'user_defined_macros'</span><span class="p">,</span> |
| <span class="s1">'_schedule_interval'</span><span class="p">,</span> <span class="s1">'partial'</span><span class="p">,</span> <span class="s1">'_old_context_manager_dags'</span><span class="p">,</span> |
| <span class="s1">'_pickle_id'</span><span class="p">,</span> <span class="s1">'_log'</span><span class="p">,</span> <span class="s1">'is_subdag'</span><span class="p">,</span> <span class="s1">'task_dict'</span><span class="p">,</span> <span class="s1">'template_searchpath'</span><span class="p">,</span> |
| <span class="s1">'sla_miss_callback'</span><span class="p">,</span> <span class="s1">'on_success_callback'</span><span class="p">,</span> <span class="s1">'on_failure_callback'</span><span class="p">,</span> |
| <span class="s1">'template_undefined'</span><span class="p">,</span> <span class="s1">'jinja_environment_kwargs'</span> |
| <span class="p">}</span> |
| <span class="k">return</span> <span class="bp">cls</span><span class="o">.</span><span class="n">__serialized_fields</span></div></div> |
| |
| |
| <div class="viewcode-block" id="DagTag"><a class="viewcode-back" href="../../../_api/airflow/models/index.html#airflow.models.dag.DagTag">[docs]</a><span class="k">class</span> <span class="nc">DagTag</span><span class="p">(</span><span class="n">Base</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> A tag name per dag, to allow quick filtering in the DAG view.</span> |
| <span class="sd"> """</span> |
| <div class="viewcode-block" id="DagTag.__tablename__"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagTag.__tablename__">[docs]</a> <span class="n">__tablename__</span> <span class="o">=</span> <span class="s2">"dag_tag"</span></div> |
| <div class="viewcode-block" id="DagTag.name"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagTag.name">[docs]</a> <span class="n">name</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="mi">100</span><span class="p">),</span> <span class="n">primary_key</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span></div> |
| <div class="viewcode-block" id="DagTag.dag_id"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagTag.dag_id">[docs]</a> <span class="n">dag_id</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="n">ID_LEN</span><span class="p">),</span> <span class="n">ForeignKey</span><span class="p">(</span><span class="s1">'dag.dag_id'</span><span class="p">),</span> <span class="n">primary_key</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span></div></div> |
| |
| |
| <div class="viewcode-block" id="DagModel"><a class="viewcode-back" href="../../../_api/airflow/models/index.html#airflow.models.dag.DagModel">[docs]</a><span class="k">class</span> <span class="nc">DagModel</span><span class="p">(</span><span class="n">Base</span><span class="p">):</span> |
| |
| <div class="viewcode-block" id="DagModel.__tablename__"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.__tablename__">[docs]</a> <span class="n">__tablename__</span> <span class="o">=</span> <span class="s2">"dag"</span></div> |
| <span class="sd">"""</span> |
| <span class="sd"> These items are stored in the database for state related information</span> |
| <span class="sd"> """</span> |
| <div class="viewcode-block" id="DagModel.dag_id"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.dag_id">[docs]</a> <span class="n">dag_id</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="n">ID_LEN</span><span class="p">),</span> <span class="n">primary_key</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span></div> |
| <div class="viewcode-block" id="DagModel.root_dag_id"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.root_dag_id">[docs]</a> <span class="n">root_dag_id</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="n">ID_LEN</span><span class="p">))</span></div> |
| <span class="c1"># A DAG can be paused from the UI / DB</span> |
| <span class="c1"># Set this default value of is_paused based on a configuration value!</span> |
| <div class="viewcode-block" id="DagModel.is_paused_at_creation"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.is_paused_at_creation">[docs]</a> <span class="n">is_paused_at_creation</span> <span class="o">=</span> <span class="n">conf</span>\ |
| <span class="o">.</span><span class="n">getboolean</span><span class="p">(</span><span class="s1">'core'</span><span class="p">,</span> |
| <span class="s1">'dags_are_paused_at_creation'</span><span class="p">)</span></div> |
| <div class="viewcode-block" id="DagModel.is_paused"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.is_paused">[docs]</a> <span class="n">is_paused</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">Boolean</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="n">is_paused_at_creation</span><span class="p">)</span></div> |
| <span class="c1"># Whether the DAG is a subdag</span> |
| <div class="viewcode-block" id="DagModel.is_subdag"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.is_subdag">[docs]</a> <span class="n">is_subdag</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">Boolean</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span></div> |
| <span class="c1"># Whether that DAG was seen on the last DagBag load</span> |
| <div class="viewcode-block" id="DagModel.is_active"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.is_active">[docs]</a> <span class="n">is_active</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">Boolean</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span></div> |
| <span class="c1"># Last time the scheduler started</span> |
| <div class="viewcode-block" id="DagModel.last_scheduler_run"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.last_scheduler_run">[docs]</a> <span class="n">last_scheduler_run</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">UtcDateTime</span><span class="p">)</span></div> |
| <span class="c1"># Last time this DAG was pickled</span> |
| <div class="viewcode-block" id="DagModel.last_pickled"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.last_pickled">[docs]</a> <span class="n">last_pickled</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">UtcDateTime</span><span class="p">)</span></div> |
| <span class="c1"># Time when the DAG last received a refresh signal</span> |
| <span class="c1"># (e.g. the DAG's "refresh" button was clicked in the web UI)</span> |
| <div class="viewcode-block" id="DagModel.last_expired"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.last_expired">[docs]</a> <span class="n">last_expired</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">UtcDateTime</span><span class="p">)</span></div> |
| <span class="c1"># Whether (one of) the scheduler is scheduling this DAG at the moment</span> |
| <div class="viewcode-block" id="DagModel.scheduler_lock"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.scheduler_lock">[docs]</a> <span class="n">scheduler_lock</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">Boolean</span><span class="p">)</span></div> |
| <span class="c1"># Foreign key to the latest pickle_id</span> |
| <div class="viewcode-block" id="DagModel.pickle_id"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.pickle_id">[docs]</a> <span class="n">pickle_id</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">Integer</span><span class="p">)</span></div> |
| <span class="c1"># The location of the file containing the DAG object</span> |
| <span class="c1"># Note: Do not depend on fileloc pointing to a file; in the case of a</span> |
| <span class="c1"># packaged DAG, it will point to the subpath of the DAG within the</span> |
| <span class="c1"># associated zip.</span> |
| <div class="viewcode-block" id="DagModel.fileloc"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.fileloc">[docs]</a> <span class="n">fileloc</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="mi">2000</span><span class="p">))</span></div> |
| <span class="c1"># String representing the owners</span> |
| <div class="viewcode-block" id="DagModel.owners"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.owners">[docs]</a> <span class="n">owners</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="mi">2000</span><span class="p">))</span></div> |
| <span class="c1"># Description of the dag</span> |
| <div class="viewcode-block" id="DagModel.description"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.description">[docs]</a> <span class="n">description</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">Text</span><span class="p">)</span></div> |
| <span class="c1"># Default view of the inside the webserver</span> |
| <div class="viewcode-block" id="DagModel.default_view"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.default_view">[docs]</a> <span class="n">default_view</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="mi">25</span><span class="p">))</span></div> |
| <span class="c1"># Schedule interval</span> |
| <div class="viewcode-block" id="DagModel.schedule_interval"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.schedule_interval">[docs]</a> <span class="n">schedule_interval</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">Interval</span><span class="p">)</span></div> |
| <span class="c1"># Tags for view filter</span> |
| <div class="viewcode-block" id="DagModel.tags"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.tags">[docs]</a> <span class="n">tags</span> <span class="o">=</span> <span class="n">relationship</span><span class="p">(</span><span class="s1">'DagTag'</span><span class="p">,</span> <span class="n">cascade</span><span class="o">=</span><span class="s1">'all,delete-orphan'</span><span class="p">,</span> <span class="n">backref</span><span class="o">=</span><span class="n">backref</span><span class="p">(</span><span class="s1">'dag'</span><span class="p">))</span></div> |
| |
| <div class="viewcode-block" id="DagModel.__table_args__"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.__table_args__">[docs]</a> <span class="n">__table_args__</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">Index</span><span class="p">(</span><span class="s1">'idx_root_dag_id'</span><span class="p">,</span> <span class="n">root_dag_id</span><span class="p">,</span> <span class="n">unique</span><span class="o">=</span><span class="kc">False</span><span class="p">),</span></div> |
| <span class="p">)</span> |
| |
| <div class="viewcode-block" id="DagModel.__repr__"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.__repr__">[docs]</a> <span class="k">def</span> <span class="nf">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="s2">"<DAG: </span><span class="si">{self.dag_id}</span><span class="s2">>"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="bp">self</span><span class="o">=</span><span class="bp">self</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DagModel.timezone"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.timezone">[docs]</a> <span class="k">def</span> <span class="nf">timezone</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">settings</span><span class="o">.</span><span class="n">TIMEZONE</span></div> |
| |
| <span class="nd">@staticmethod</span> |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagModel.get_dagmodel"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.get_dagmodel">[docs]</a> <span class="k">def</span> <span class="nf">get_dagmodel</span><span class="p">(</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">DagModel</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DagModel</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="n">dag_id</span><span class="p">)</span><span class="o">.</span><span class="n">first</span><span class="p">()</span></div> |
| |
| <span class="nd">@classmethod</span> |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagModel.get_current"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.get_current">[docs]</a> <span class="k">def</span> <span class="nf">get_current</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">dag_id</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="bp">cls</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="bp">cls</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="n">dag_id</span><span class="p">)</span><span class="o">.</span><span class="n">first</span><span class="p">()</span></div> |
| |
| <div class="viewcode-block" id="DagModel.get_default_view"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.get_default_view">[docs]</a> <span class="k">def</span> <span class="nf">get_default_view</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_view</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'webserver'</span><span class="p">,</span> <span class="s1">'dag_default_view'</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_view</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagModel.get_last_dagrun"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.get_last_dagrun">[docs]</a> <span class="k">def</span> <span class="nf">get_last_dagrun</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">include_externally_triggered</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">get_last_dagrun</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> |
| <span class="n">include_externally_triggered</span><span class="o">=</span><span class="n">include_externally_triggered</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DagModel.safe_dag_id"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.safe_dag_id">[docs]</a> <span class="k">def</span> <span class="nf">safe_dag_id</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s1">'.'</span><span class="p">,</span> <span class="s1">'__dot__'</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="DagModel.get_dag"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.get_dag">[docs]</a> <span class="k">def</span> <span class="nf">get_dag</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">store_serialized_dags</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> |
| <span class="sd">"""Creates a dagbag to load and return a DAG.</span> |
| <span class="sd"> Calling it from UI should set store_serialized_dags = STORE_SERIALIZED_DAGS.</span> |
| <span class="sd"> There may be a delay for scheduler to write serialized DAG into database,</span> |
| <span class="sd"> loads from file in this case.</span> |
| <span class="sd"> FIXME: remove it when webserver does not access to DAG folder in future.</span> |
| <span class="sd"> """</span> |
| <span class="n">dag</span> <span class="o">=</span> <span class="n">DagBag</span><span class="p">(</span> |
| <span class="n">dag_folder</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">fileloc</span><span class="p">,</span> <span class="n">store_serialized_dags</span><span class="o">=</span><span class="n">store_serialized_dags</span><span class="p">)</span><span class="o">.</span><span class="n">get_dag</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">store_serialized_dags</span> <span class="ow">and</span> <span class="n">dag</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="n">dag</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_dag</span><span class="p">()</span> |
| <span class="k">return</span> <span class="n">dag</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagModel.create_dagrun"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.create_dagrun">[docs]</a> <span class="k">def</span> <span class="nf">create_dagrun</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> |
| <span class="n">run_id</span><span class="p">,</span> |
| <span class="n">state</span><span class="p">,</span> |
| <span class="n">execution_date</span><span class="p">,</span> |
| <span class="n">start_date</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">external_trigger</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">conf</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Creates a dag run from this dag including the tasks associated with this dag.</span> |
| <span class="sd"> Returns the dag run.</span> |
| |
| <span class="sd"> :param run_id: defines the the run id for this dag run</span> |
| <span class="sd"> :type run_id: str</span> |
| <span class="sd"> :param execution_date: the execution date of this dag run</span> |
| <span class="sd"> :type execution_date: datetime.datetime</span> |
| <span class="sd"> :param state: the state of the dag run</span> |
| <span class="sd"> :type state: airflow.utils.state.State</span> |
| <span class="sd"> :param start_date: the date this dag run should be evaluated</span> |
| <span class="sd"> :type start_date: datetime.datetime</span> |
| <span class="sd"> :param external_trigger: whether this dag run is externally triggered</span> |
| <span class="sd"> :type external_trigger: bool</span> |
| <span class="sd"> :param session: database session</span> |
| <span class="sd"> :type session: sqlalchemy.orm.session.Session</span> |
| <span class="sd"> """</span> |
| |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_dag</span><span class="p">()</span><span class="o">.</span><span class="n">create_dagrun</span><span class="p">(</span><span class="n">run_id</span><span class="o">=</span><span class="n">run_id</span><span class="p">,</span> |
| <span class="n">state</span><span class="o">=</span><span class="n">state</span><span class="p">,</span> |
| <span class="n">execution_date</span><span class="o">=</span><span class="n">execution_date</span><span class="p">,</span> |
| <span class="n">start_date</span><span class="o">=</span><span class="n">start_date</span><span class="p">,</span> |
| <span class="n">external_trigger</span><span class="o">=</span><span class="n">external_trigger</span><span class="p">,</span> |
| <span class="n">conf</span><span class="o">=</span><span class="n">conf</span><span class="p">,</span> |
| <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">)</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagModel.set_is_paused"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.set_is_paused">[docs]</a> <span class="k">def</span> <span class="nf">set_is_paused</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> |
| <span class="n">is_paused</span><span class="p">,</span> <span class="c1"># type: bool</span> |
| <span class="n">including_subdags</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="c1"># type: bool</span> |
| <span class="n">store_serialized_dags</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="c1"># type: bool</span> |
| <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="p">):</span> |
| <span class="c1"># type: (...) -> None</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Pause/Un-pause a DAG.</span> |
| |
| <span class="sd"> :param is_paused: Is the DAG paused</span> |
| <span class="sd"> :param including_subdags: whether to include the DAG's subdags</span> |
| <span class="sd"> :param store_serialized_dags: whether to serialize DAGs & store it in DB</span> |
| <span class="sd"> :param session: session</span> |
| <span class="sd"> """</span> |
| <span class="n">dag_ids</span> <span class="o">=</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">]</span> <span class="c1"># type: List[str]</span> |
| <span class="k">if</span> <span class="n">including_subdags</span><span class="p">:</span> |
| <span class="n">dag</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_dag</span><span class="p">(</span><span class="n">store_serialized_dags</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">dag</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">DagNotFound</span><span class="p">(</span><span class="s2">"Dag id </span><span class="si">{}</span><span class="s2"> not found"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">))</span> |
| <span class="n">subdags</span> <span class="o">=</span> <span class="n">dag</span><span class="o">.</span><span class="n">subdags</span> |
| <span class="n">dag_ids</span><span class="o">.</span><span class="n">extend</span><span class="p">([</span><span class="n">subdag</span><span class="o">.</span><span class="n">dag_id</span> <span class="k">for</span> <span class="n">subdag</span> <span class="ow">in</span> <span class="n">subdags</span><span class="p">])</span> |
| <span class="n">dag_models</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">DagModel</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DagModel</span><span class="o">.</span><span class="n">dag_id</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="n">dag_ids</span><span class="p">))</span><span class="o">.</span><span class="n">all</span><span class="p">()</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="k">for</span> <span class="n">dag_model</span> <span class="ow">in</span> <span class="n">dag_models</span><span class="p">:</span> |
| <span class="n">dag_model</span><span class="o">.</span><span class="n">is_paused</span> <span class="o">=</span> <span class="n">is_paused</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span> |
| <span class="k">except</span> <span class="ne">Exception</span><span class="p">:</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">rollback</span><span class="p">()</span> |
| <span class="k">raise</span></div> |
| |
| <span class="nd">@classmethod</span> |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagModel.deactivate_deleted_dags"><a class="viewcode-back" href="../../../_api/airflow/models/dag/index.html#airflow.models.dag.DagModel.deactivate_deleted_dags">[docs]</a> <span class="k">def</span> <span class="nf">deactivate_deleted_dags</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">alive_dag_filelocs</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Set ``is_active=False`` on the DAGs for which the DAG files have been removed.</span> |
| <span class="sd"> Additionally change ``is_active=False`` to ``True`` if the DAG file exists.</span> |
| |
| <span class="sd"> :param alive_dag_filelocs: file paths of alive DAGs</span> |
| <span class="sd"> :param session: ORM Session</span> |
| <span class="sd"> """</span> |
| <span class="n">log</span> <span class="o">=</span> <span class="n">LoggingMixin</span><span class="p">()</span><span class="o">.</span><span class="n">log</span> |
| <span class="n">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"Deactivating DAGs (for which DAG files are deleted) from </span><span class="si">%s</span><span class="s2"> table "</span><span class="p">,</span> |
| <span class="bp">cls</span><span class="o">.</span><span class="n">__tablename__</span><span class="p">)</span> |
| <span class="n">dag_models</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="bp">cls</span><span class="p">)</span><span class="o">.</span><span class="n">all</span><span class="p">()</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="k">for</span> <span class="n">dag_model</span> <span class="ow">in</span> <span class="n">dag_models</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">dag_model</span><span class="o">.</span><span class="n">fileloc</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">correct_maybe_zipped</span><span class="p">(</span><span class="n">dag_model</span><span class="o">.</span><span class="n">fileloc</span><span class="p">)</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">alive_dag_filelocs</span><span class="p">:</span> |
| <span class="n">dag_model</span><span class="o">.</span><span class="n">is_active</span> <span class="o">=</span> <span class="kc">False</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="c1"># If is_active is set as False and the DAG File still exists</span> |
| <span class="c1"># Change is_active=True</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">dag_model</span><span class="o">.</span><span class="n">is_active</span><span class="p">:</span> |
| <span class="n">dag_model</span><span class="o">.</span><span class="n">is_active</span> <span class="o">=</span> <span class="kc">True</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="k">continue</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span> |
| <span class="k">except</span> <span class="ne">Exception</span><span class="p">:</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">rollback</span><span class="p">()</span> |
| <span class="k">raise</span></div></div> |
| </pre></div> |
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