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| <h1>Source code for airflow.models.dagrun</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">typing</span> <span class="kn">import</span> <span class="n">Optional</span><span class="p">,</span> <span class="n">cast</span> |
| |
| <span class="kn">import</span> <span class="nn">six</span> |
| <span class="kn">from</span> <span class="nn">sqlalchemy</span> <span class="kn">import</span> <span class="p">(</span> |
| <span class="n">Column</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">Boolean</span><span class="p">,</span> <span class="n">PickleType</span><span class="p">,</span> <span class="n">Index</span><span class="p">,</span> <span class="n">UniqueConstraint</span><span class="p">,</span> <span class="n">func</span><span class="p">,</span> <span class="n">DateTime</span><span class="p">,</span> <span class="n">or_</span><span class="p">,</span> |
| <span class="n">and_</span> |
| <span class="p">)</span> |
| <span class="kn">from</span> <span class="nn">sqlalchemy.ext.declarative</span> <span class="kn">import</span> <span class="n">declared_attr</span> |
| <span class="kn">from</span> <span class="nn">sqlalchemy.orm</span> <span class="kn">import</span> <span class="n">synonym</span> |
| <span class="kn">from</span> <span class="nn">sqlalchemy.orm.session</span> <span class="kn">import</span> <span class="n">Session</span> |
| <span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="kn">import</span> <span class="n">AirflowException</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.base</span> <span class="kn">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.settings</span> <span class="kn">import</span> <span class="n">Stats</span> |
| <span class="kn">from</span> <span class="nn">airflow.ti_deps.dep_context</span> <span class="kn">import</span> <span class="n">DepContext</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils</span> <span class="kn">import</span> <span class="n">timezone</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.db</span> <span class="kn">import</span> <span class="n">provide_session</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.log.logging_mixin</span> <span class="kn">import</span> <span class="n">LoggingMixin</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.sqlalchemy</span> <span class="kn">import</span> <span class="n">UtcDateTime</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.state</span> <span class="kn">import</span> <span class="n">State</span> |
| |
| |
| <div class="viewcode-block" id="DagRun"><a class="viewcode-back" href="../../../_api/airflow/models/index.html#airflow.models.dagrun.DagRun">[docs]</a><span class="k">class</span> <span class="nc">DagRun</span><span class="p">(</span><span class="n">Base</span><span class="p">,</span> <span class="n">LoggingMixin</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> DagRun describes an instance of a Dag. It can be created</span> |
| <span class="sd"> by the scheduler (for regular runs) or by an external trigger</span> |
| <span class="sd"> """</span> |
| <div class="viewcode-block" id="DagRun.__tablename__"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.__tablename__">[docs]</a> <span class="n">__tablename__</span> <span class="o">=</span> <span class="s2">"dag_run"</span></div> |
| |
| <div class="viewcode-block" id="DagRun.ID_PREFIX"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.ID_PREFIX">[docs]</a> <span class="n">ID_PREFIX</span> <span class="o">=</span> <span class="s1">'scheduled__'</span></div> |
| <div class="viewcode-block" id="DagRun.ID_FORMAT_PREFIX"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.ID_FORMAT_PREFIX">[docs]</a> <span class="n">ID_FORMAT_PREFIX</span> <span class="o">=</span> <span class="n">ID_PREFIX</span> <span class="o">+</span> <span class="s1">'</span><span class="si">{0}</span><span class="s1">'</span></div> |
| |
| <div class="viewcode-block" id="DagRun.id"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.id">[docs]</a> <span class="nb">id</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">Integer</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="DagRun.dag_id"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.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></div> |
| <div class="viewcode-block" id="DagRun.execution_date"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.execution_date">[docs]</a> <span class="n">execution_date</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">UtcDateTime</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">)</span></div> |
| <div class="viewcode-block" id="DagRun.start_date"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.start_date">[docs]</a> <span class="n">start_date</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">UtcDateTime</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">)</span></div> |
| <div class="viewcode-block" id="DagRun.end_date"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.end_date">[docs]</a> <span class="n">end_date</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">UtcDateTime</span><span class="p">)</span></div> |
| <div class="viewcode-block" id="DagRun._state"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun._state">[docs]</a> <span class="n">_state</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="s1">'state'</span><span class="p">,</span> <span class="n">String</span><span class="p">(</span><span class="mi">50</span><span class="p">),</span> <span class="n">default</span><span class="o">=</span><span class="n">State</span><span class="o">.</span><span class="n">RUNNING</span><span class="p">)</span></div> |
| <div class="viewcode-block" id="DagRun.run_id"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.run_id">[docs]</a> <span class="n">run_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> |
| <div class="viewcode-block" id="DagRun.external_trigger"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.external_trigger">[docs]</a> <span class="n">external_trigger</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">True</span><span class="p">)</span></div> |
| <div class="viewcode-block" id="DagRun.conf"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.conf">[docs]</a> <span class="n">conf</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">PickleType</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="DagRun.dag"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.dag">[docs]</a> <span class="n">dag</span> <span class="o">=</span> <span class="kc">None</span></div> |
| |
| <div class="viewcode-block" id="DagRun.__table_args__"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.__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">'dag_id_state'</span><span class="p">,</span> <span class="n">dag_id</span><span class="p">,</span> <span class="n">_state</span><span class="p">),</span> |
| <span class="n">UniqueConstraint</span><span class="p">(</span><span class="s1">'dag_id'</span><span class="p">,</span> <span class="s1">'execution_date'</span><span class="p">),</span> |
| <span class="n">UniqueConstraint</span><span class="p">(</span><span class="s1">'dag_id'</span><span class="p">,</span> <span class="s1">'run_id'</span><span class="p">),</span></div> |
| <span class="p">)</span> |
| |
| <div class="viewcode-block" id="DagRun.__repr__"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.__repr__">[docs]</a> <span class="k">def</span> <span class="fm">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="p">(</span> |
| <span class="s1">'<DagRun </span><span class="si">{dag_id}</span><span class="s1"> @ </span><span class="si">{execution_date}</span><span class="s1">: </span><span class="si">{run_id}</span><span class="s1">, '</span> |
| <span class="s1">'externally triggered: </span><span class="si">{external_trigger}</span><span class="s1">>'</span> |
| <span class="p">)</span><span class="o">.</span><span class="n">format</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">execution_date</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">execution_date</span><span class="p">,</span> |
| <span class="n">run_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">run_id</span><span class="p">,</span> |
| <span class="n">external_trigger</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">external_trigger</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="DagRun.get_state"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.get_state">[docs]</a> <span class="k">def</span> <span class="nf">get_state</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">_state</span></div> |
| |
| <div class="viewcode-block" id="DagRun.set_state"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.set_state">[docs]</a> <span class="k">def</span> <span class="nf">set_state</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">state</span><span class="p">):</span> |
| <span class="k">if</span> <span class="bp">self</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="bp">self</span><span class="o">.</span><span class="n">_state</span> <span class="o">=</span> <span class="n">state</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">utcnow</span><span class="p">()</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_state</span> <span class="ow">in</span> <span class="n">State</span><span class="o">.</span><span class="n">finished</span><span class="p">()</span> <span class="k">else</span> <span class="kc">None</span></div> |
| |
| <span class="nd">@declared_attr</span> |
| <div class="viewcode-block" id="DagRun.state"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.state">[docs]</a> <span class="k">def</span> <span class="nf">state</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">synonym</span><span class="p">(</span><span class="s1">'_state'</span><span class="p">,</span> |
| <span class="n">descriptor</span><span class="o">=</span><span class="nb">property</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">get_state</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">set_state</span><span class="p">))</span></div> |
| |
| <span class="nd">@classmethod</span> |
| <div class="viewcode-block" id="DagRun.id_for_date"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.id_for_date">[docs]</a> <span class="k">def</span> <span class="nf">id_for_date</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">date</span><span class="p">,</span> <span class="n">prefix</span><span class="o">=</span><span class="n">ID_FORMAT_PREFIX</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">prefix</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">date</span><span class="o">.</span><span class="n">isoformat</span><span class="p">()[:</span><span class="mi">19</span><span class="p">])</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagRun.refresh_from_db"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.refresh_from_db">[docs]</a> <span class="k">def</span> <span class="nf">refresh_from_db</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"> Reloads the current dagrun from the database</span> |
| |
| <span class="sd"> :param session: database session</span> |
| <span class="sd"> """</span> |
| <span class="n">DR</span> <span class="o">=</span> <span class="n">DagRun</span> |
| |
| <span class="n">exec_date</span> <span class="o">=</span> <span class="n">func</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">execution_date</span><span class="p">,</span> <span class="n">DateTime</span><span class="p">)</span> |
| |
| <span class="n">dr</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="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> |
| <span class="n">func</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="n">DR</span><span class="o">.</span><span class="n">execution_date</span><span class="p">,</span> <span class="n">DateTime</span><span class="p">)</span> <span class="o">==</span> <span class="n">exec_date</span><span class="p">,</span> |
| <span class="n">DR</span><span class="o">.</span><span class="n">run_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">run_id</span> |
| <span class="p">)</span><span class="o">.</span><span class="n">one</span><span class="p">()</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">id</span> <span class="o">=</span> <span class="n">dr</span><span class="o">.</span><span class="n">id</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="n">dr</span><span class="o">.</span><span class="n">state</span></div> |
| |
| <span class="nd">@staticmethod</span> |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagRun.find"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.find">[docs]</a> <span class="k">def</span> <span class="nf">find</span><span class="p">(</span><span class="n">dag_id</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">run_id</span><span class="o">=</span><span class="kc">None</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">state</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">None</span><span class="p">,</span> <span class="n">no_backfills</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="sd">"""</span> |
| <span class="sd"> Returns a set of dag runs for the given search criteria.</span> |
| |
| <span class="sd"> :param dag_id: the dag_id to find dag runs for</span> |
| <span class="sd"> :type dag_id: int, list</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</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: str</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 no_backfills: return no backfills (True), return all (False).</span> |
| <span class="sd"> Defaults to False</span> |
| <span class="sd"> :type no_backfills: 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">DR</span> <span class="o">=</span> <span class="n">DagRun</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">DR</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">dag_id</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">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="n">run_id</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">DR</span><span class="o">.</span><span class="n">run_id</span> <span class="o">==</span> <span class="n">run_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">execution_date</span><span class="p">:</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">execution_date</span><span class="p">,</span> <span class="nb">list</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">DR</span><span class="o">.</span><span class="n">execution_date</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="n">execution_date</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">DR</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="k">if</span> <span class="n">state</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">DR</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">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">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">DR</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">if</span> <span class="n">no_backfills</span><span class="p">:</span> |
| <span class="c1"># in order to prevent a circular dependency</span> |
| <span class="kn">from</span> <span class="nn">airflow.jobs</span> <span class="kn">import</span> <span class="n">BackfillJob</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">DR</span><span class="o">.</span><span class="n">run_id</span><span class="o">.</span><span class="n">notlike</span><span class="p">(</span><span class="n">BackfillJob</span><span class="o">.</span><span class="n">ID_PREFIX</span> <span class="o">+</span> <span class="s1">'%'</span><span class="p">))</span> |
| |
| <span class="n">dr</span> <span class="o">=</span> <span class="n">qry</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="p">)</span><span class="o">.</span><span class="n">all</span><span class="p">()</span> |
| |
| <span class="k">return</span> <span class="n">dr</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagRun.get_task_instances"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.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">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="sd">"""</span> |
| <span class="sd"> Returns the task instances for this dag run</span> |
| <span class="sd"> """</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.taskinstance</span> <span class="kn">import</span> <span class="n">TaskInstance</span> <span class="c1"># Avoid circular import</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="bp">self</span><span class="o">.</span><span class="n">execution_date</span><span class="p">,</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="n">six</span><span class="o">.</span><span class="n">string_types</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="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag</span><span class="o">.</span><span class="n">partial</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">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">dag</span><span class="o">.</span><span class="n">task_ids</span><span class="p">))</span> |
| |
| <span class="k">return</span> <span class="n">tis</span><span class="o">.</span><span class="n">all</span><span class="p">()</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagRun.get_task_instance"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.get_task_instance">[docs]</a> <span class="k">def</span> <span class="nf">get_task_instance</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="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 task instance specified by task_id for this dag run</span> |
| |
| <span class="sd"> :param task_id: the task id</span> |
| <span class="sd"> """</span> |
| |
| <span class="kn">from</span> <span class="nn">airflow.models.taskinstance</span> <span class="kn">import</span> <span class="n">TaskInstance</span> <span class="c1"># Avoid circular import</span> |
| <span class="n">TI</span> <span class="o">=</span> <span class="n">TaskInstance</span> |
| <span class="n">ti</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">TI</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">execution_date</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">task_id</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">ti</span></div> |
| |
| <div class="viewcode-block" id="DagRun.get_dag"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.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="sd">"""</span> |
| <span class="sd"> Returns the Dag associated with this DagRun.</span> |
| |
| <span class="sd"> :return: DAG</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">dag</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"The DAG (.dag) for </span><span class="si">{}</span><span class="s2"> needs to be set"</span> |
| <span class="o">.</span><span class="n">format</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</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagRun.get_previous_dagrun"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.get_previous_dagrun">[docs]</a> <span class="k">def</span> <span class="nf">get_previous_dagrun</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="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="c1"># type: (Optional[str], Optional[Session]) -> Optional['DagRun']</span> |
| <span class="sd">"""The previous DagRun, if there is one"""</span> |
| |
| <span class="n">session</span> <span class="o">=</span> <span class="n">cast</span><span class="p">(</span><span class="n">Session</span><span class="p">,</span> <span class="n">session</span><span class="p">)</span> <span class="c1"># mypy</span> |
| |
| <span class="n">filters</span> <span class="o">=</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="bp">self</span><span class="o">.</span><span class="n">execution_date</span><span class="p">,</span> |
| <span class="p">]</span> |
| <span class="k">if</span> <span class="n">state</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="n">filters</span><span class="o">.</span><span class="n">append</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="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">DagRun</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">filters</span> |
| <span class="p">)</span><span class="o">.</span><span class="n">order_by</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">desc</span><span class="p">()</span></div> |
| <span class="p">)</span><span class="o">.</span><span class="n">first</span><span class="p">()</span> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagRun.get_previous_scheduled_dagrun"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.get_previous_scheduled_dagrun">[docs]</a> <span class="k">def</span> <span class="nf">get_previous_scheduled_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="sd">"""The previous, SCHEDULED DagRun, if there is one"""</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">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">dag</span><span class="o">.</span><span class="n">previous_schedule</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">execution_date</span><span class="p">)</span></div> |
| <span class="p">)</span><span class="o">.</span><span class="n">first</span><span class="p">()</span> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagRun.update_state"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.update_state">[docs]</a> <span class="k">def</span> <span class="nf">update_state</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"> Determines the overall state of the DagRun based on the state</span> |
| <span class="sd"> of its TaskInstances.</span> |
| |
| <span class="sd"> :return: State</span> |
| <span class="sd"> """</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">tis</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_task_instances</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="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="s2">"Updating state for </span><span class="si">%s</span><span class="s2"> considering </span><span class="si">%s</span><span class="s2"> task(s)"</span><span class="p">,</span> <span class="bp">self</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">tis</span><span class="p">))</span> |
| |
| <span class="k">for</span> <span class="n">ti</span> <span class="ow">in</span> <span class="nb">list</span><span class="p">(</span><span class="n">tis</span><span class="p">):</span> |
| <span class="c1"># skip in db?</span> |
| <span class="k">if</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">REMOVED</span><span class="p">:</span> |
| <span class="n">tis</span><span class="o">.</span><span class="n">remove</span><span class="p">(</span><span class="n">ti</span><span class="p">)</span> |
| <span class="k">else</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">dag</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="c1"># pre-calculate</span> |
| <span class="c1"># db is faster</span> |
| <span class="n">start_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">unfinished_tasks</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_task_instances</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">unfinished</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">none_depends_on_past</span> <span class="o">=</span> <span class="nb">all</span><span class="p">(</span><span class="ow">not</span> <span class="n">t</span><span class="o">.</span><span class="n">task</span><span class="o">.</span><span class="n">depends_on_past</span> <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="n">unfinished_tasks</span><span class="p">)</span> |
| <span class="n">none_task_concurrency</span> <span class="o">=</span> <span class="nb">all</span><span class="p">(</span><span class="n">t</span><span class="o">.</span><span class="n">task</span><span class="o">.</span><span class="n">task_concurrency</span> <span class="ow">is</span> <span class="kc">None</span> |
| <span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="n">unfinished_tasks</span><span class="p">)</span> |
| <span class="c1"># small speed up</span> |
| <span class="k">if</span> <span class="n">unfinished_tasks</span> <span class="ow">and</span> <span class="n">none_depends_on_past</span> <span class="ow">and</span> <span class="n">none_task_concurrency</span><span class="p">:</span> |
| <span class="c1"># todo: this can actually get pretty slow: one task costs between 0.01-015s</span> |
| <span class="n">no_dependencies_met</span> <span class="o">=</span> <span class="kc">True</span> |
| <span class="k">for</span> <span class="n">ut</span> <span class="ow">in</span> <span class="n">unfinished_tasks</span><span class="p">:</span> |
| <span class="c1"># We need to flag upstream and check for changes because upstream</span> |
| <span class="c1"># failures/re-schedules can result in deadlock false positives</span> |
| <span class="n">old_state</span> <span class="o">=</span> <span class="n">ut</span><span class="o">.</span><span class="n">state</span> |
| <span class="n">deps_met</span> <span class="o">=</span> <span class="n">ut</span><span class="o">.</span><span class="n">are_dependencies_met</span><span class="p">(</span> |
| <span class="n">dep_context</span><span class="o">=</span><span class="n">DepContext</span><span class="p">(</span> |
| <span class="n">flag_upstream_failed</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> |
| <span class="n">ignore_in_retry_period</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> |
| <span class="n">ignore_in_reschedule_period</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="k">if</span> <span class="n">deps_met</span> <span class="ow">or</span> <span class="n">old_state</span> <span class="o">!=</span> <span class="n">ut</span><span class="o">.</span><span class="n">current_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">no_dependencies_met</span> <span class="o">=</span> <span class="kc">False</span> |
| <span class="k">break</span> |
| |
| <span class="n">duration</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">start_dttm</span><span class="p">)</span><span class="o">.</span><span class="n">total_seconds</span><span class="p">()</span> <span class="o">*</span> <span class="mi">1000</span> |
| <span class="n">Stats</span><span class="o">.</span><span class="n">timing</span><span class="p">(</span><span class="s2">"dagrun.dependency-check.</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="n">duration</span><span class="p">)</span> |
| |
| <span class="n">leaf_tis</span> <span class="o">=</span> <span class="p">[</span><span class="n">ti</span> <span class="k">for</span> <span class="n">ti</span> <span class="ow">in</span> <span class="n">tis</span> <span class="k">if</span> <span class="n">ti</span><span class="o">.</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="n">dag</span><span class="o">.</span><span class="n">leaves</span><span class="p">}]</span> |
| |
| <span class="c1"># if all roots finished and at least one failed, the run failed</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">unfinished_tasks</span> <span class="ow">and</span> <span class="nb">any</span><span class="p">(</span> |
| <span class="n">leaf_ti</span><span class="o">.</span><span class="n">state</span> <span class="ow">in</span> <span class="p">{</span><span class="n">State</span><span class="o">.</span><span class="n">FAILED</span><span class="p">,</span> <span class="n">State</span><span class="o">.</span><span class="n">UPSTREAM_FAILED</span><span class="p">}</span> <span class="k">for</span> <span class="n">leaf_ti</span> <span class="ow">in</span> <span class="n">leaf_tis</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">'Marking run </span><span class="si">%s</span><span class="s1"> failed'</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">set_state</span><span class="p">(</span><span class="n">State</span><span class="o">.</span><span class="n">FAILED</span><span class="p">)</span> |
| <span class="n">dag</span><span class="o">.</span><span class="n">handle_callback</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">success</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">reason</span><span class="o">=</span><span class="s1">'task_failure'</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"># if all leafs succeeded and no unfinished tasks, the run succeeded</span> |
| <span class="k">elif</span> <span class="ow">not</span> <span class="n">unfinished_tasks</span> <span class="ow">and</span> <span class="nb">all</span><span class="p">(</span> |
| <span class="n">leaf_ti</span><span class="o">.</span><span class="n">state</span> <span class="ow">in</span> <span class="p">{</span><span class="n">State</span><span class="o">.</span><span class="n">SUCCESS</span><span class="p">,</span> <span class="n">State</span><span class="o">.</span><span class="n">SKIPPED</span><span class="p">}</span> <span class="k">for</span> <span class="n">leaf_ti</span> <span class="ow">in</span> <span class="n">leaf_tis</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">'Marking run </span><span class="si">%s</span><span class="s1"> successful'</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">set_state</span><span class="p">(</span><span class="n">State</span><span class="o">.</span><span class="n">SUCCESS</span><span class="p">)</span> |
| <span class="n">dag</span><span class="o">.</span><span class="n">handle_callback</span><span class="p">(</span><span class="bp">self</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="s1">'success'</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"># if *all tasks* are deadlocked, the run failed</span> |
| <span class="k">elif</span> <span class="p">(</span><span class="n">unfinished_tasks</span> <span class="ow">and</span> <span class="n">none_depends_on_past</span> <span class="ow">and</span> |
| <span class="n">none_task_concurrency</span> <span class="ow">and</span> <span class="n">no_dependencies_met</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">'Deadlock; marking run </span><span class="si">%s</span><span class="s1"> failed'</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">set_state</span><span class="p">(</span><span class="n">State</span><span class="o">.</span><span class="n">FAILED</span><span class="p">)</span> |
| <span class="n">dag</span><span class="o">.</span><span class="n">handle_callback</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">success</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">reason</span><span class="o">=</span><span class="s1">'all_tasks_deadlocked'</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"># finally, if the roots aren't done, the dag is still running</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">set_state</span><span class="p">(</span><span class="n">State</span><span class="o">.</span><span class="n">RUNNING</span><span class="p">)</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">_emit_duration_stats_for_finished_state</span><span class="p">()</span> |
| |
| <span class="c1"># todo: determine we want to use with_for_update to make sure to lock the run</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">merge</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="n">commit</span><span class="p">()</span> |
| |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">state</span></div> |
| |
| <div class="viewcode-block" id="DagRun._emit_duration_stats_for_finished_state"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun._emit_duration_stats_for_finished_state">[docs]</a> <span class="k">def</span> <span class="nf">_emit_duration_stats_for_finished_state</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">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">return</span> |
| |
| <span class="n">duration</span> <span class="o">=</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="bp">self</span><span class="o">.</span><span class="n">start_date</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="ow">is</span> <span class="n">State</span><span class="o">.</span><span class="n">SUCCESS</span><span class="p">:</span> |
| <span class="n">Stats</span><span class="o">.</span><span class="n">timing</span><span class="p">(</span><span class="s1">'dagrun.duration.success.</span><span class="si">{}</span><span class="s1">'</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">duration</span><span class="p">)</span> |
| <span class="k">elif</span> <span class="bp">self</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">Stats</span><span class="o">.</span><span class="n">timing</span><span class="p">(</span><span class="s1">'dagrun.duration.failed.</span><span class="si">{}</span><span class="s1">'</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">duration</span><span class="p">)</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagRun.verify_integrity"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.verify_integrity">[docs]</a> <span class="k">def</span> <span class="nf">verify_integrity</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"> Verifies the DagRun by checking for removed tasks or tasks that are not in the</span> |
| <span class="sd"> database yet. It will set state to removed or add the task if required.</span> |
| <span class="sd"> """</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.taskinstance</span> <span class="kn">import</span> <span class="n">TaskInstance</span> <span class="c1"># Avoid circular import</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">tis</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_task_instances</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"># check for removed or restored tasks</span> |
| <span class="n">task_ids</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="k">for</span> <span class="n">ti</span> <span class="ow">in</span> <span class="n">tis</span><span class="p">:</span> |
| <span class="n">task_ids</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">task_id</span><span class="p">)</span> |
| <span class="n">task</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">task</span> <span class="o">=</span> <span class="n">dag</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">except</span> <span class="n">AirflowException</span><span class="p">:</span> |
| <span class="k">if</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">REMOVED</span><span class="p">:</span> |
| <span class="k">pass</span> <span class="c1"># ti has already been removed, just ignore it</span> |
| <span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">State</span><span class="o">.</span><span class="n">RUNNING</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">dag</span><span class="o">.</span><span class="n">partial</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">warning</span><span class="p">(</span><span class="s2">"Failed to get task '</span><span class="si">{}</span><span class="s2">' for dag '</span><span class="si">{}</span><span class="s2">'. "</span> |
| <span class="s2">"Marking it as removed."</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">ti</span><span class="p">,</span> <span class="n">dag</span><span class="p">))</span> |
| <span class="n">Stats</span><span class="o">.</span><span class="n">incr</span><span class="p">(</span> |
| <span class="s2">"task_removed_from_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">dag</span><span class="o">.</span><span class="n">dag_id</span><span class="p">),</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">1</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">REMOVED</span> |
| |
| <span class="n">is_task_in_dag</span> <span class="o">=</span> <span class="n">task</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> |
| <span class="n">should_restore_task</span> <span class="o">=</span> <span class="n">is_task_in_dag</span> <span class="ow">and</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">REMOVED</span> |
| <span class="k">if</span> <span class="n">should_restore_task</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="s2">"Restoring task '</span><span class="si">{}</span><span class="s2">' which was previously "</span> |
| <span class="s2">"removed from 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">ti</span><span class="p">,</span> <span class="n">dag</span><span class="p">))</span> |
| <span class="n">Stats</span><span class="o">.</span><span class="n">incr</span><span class="p">(</span><span class="s2">"task_restored_to_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">dag</span><span class="o">.</span><span class="n">dag_id</span><span class="p">),</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">1</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">NONE</span> |
| |
| <span class="c1"># check for missing tasks</span> |
| <span class="k">for</span> <span class="n">task</span> <span class="ow">in</span> <span class="n">six</span><span class="o">.</span><span class="n">itervalues</span><span class="p">(</span><span class="n">dag</span><span class="o">.</span><span class="n">task_dict</span><span class="p">):</span> |
| <span class="k">if</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">execution_date</span> <span class="ow">and</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_backfill</span><span class="p">:</span> |
| <span class="k">continue</span> |
| |
| <span class="k">if</span> <span class="n">task</span><span class="o">.</span><span class="n">task_id</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">task_ids</span><span class="p">:</span> |
| <span class="n">Stats</span><span class="o">.</span><span class="n">incr</span><span class="p">(</span> |
| <span class="s2">"task_instance_created-</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">task</span><span class="o">.</span><span class="vm">__class__</span><span class="o">.</span><span class="vm">__name__</span><span class="p">),</span> |
| <span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span> |
| <span class="n">ti</span> <span class="o">=</span> <span class="n">TaskInstance</span><span class="p">(</span><span class="n">task</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">execution_date</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">ti</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> |
| <div class="viewcode-block" id="DagRun.get_run"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.get_run">[docs]</a> <span class="k">def</span> <span class="nf">get_run</span><span class="p">(</span><span class="n">session</span><span class="p">,</span> <span class="n">dag_id</span><span class="p">,</span> <span class="n">execution_date</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> :param dag_id: DAG ID</span> |
| <span class="sd"> :type dag_id: unicode</span> |
| <span class="sd"> :param execution_date: execution date</span> |
| <span class="sd"> :type execution_date: datetime</span> |
| <span class="sd"> :return: DagRun corresponding to the given dag_id and execution date</span> |
| <span class="sd"> if one exists. None otherwise.</span> |
| <span class="sd"> :rtype: airflow.models.DagRun</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">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="n">dag_id</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="kc">False</span><span class="p">,</span> <span class="c1"># noqa</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="p">)</span> |
| <span class="k">return</span> <span class="n">qry</span><span class="o">.</span><span class="n">first</span><span class="p">()</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="DagRun.is_backfill"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.is_backfill">[docs]</a> <span class="k">def</span> <span class="nf">is_backfill</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="kn">from</span> <span class="nn">airflow.jobs</span> <span class="kn">import</span> <span class="n">BackfillJob</span> |
| <span class="k">return</span> <span class="p">(</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">run_id</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">run_id</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="n">BackfillJob</span><span class="o">.</span><span class="n">ID_PREFIX</span><span class="p">)</span></div> |
| <span class="p">)</span> |
| |
| <span class="nd">@classmethod</span> |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="DagRun.get_latest_runs"><a class="viewcode-back" href="../../../_api/airflow/models/dagrun/index.html#airflow.models.dagrun.DagRun.get_latest_runs">[docs]</a> <span class="k">def</span> <span class="nf">get_latest_runs</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">session</span><span class="p">):</span> |
| <span class="sd">"""Returns the latest DagRun for each DAG. """</span> |
| <span class="n">subquery</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="bp">cls</span><span class="o">.</span><span class="n">dag_id</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="bp">cls</span><span class="o">.</span><span class="n">execution_date</span><span class="p">)</span><span class="o">.</span><span class="n">label</span><span class="p">(</span><span class="s1">'execution_date'</span><span class="p">))</span> |
| <span class="o">.</span><span class="n">group_by</span><span class="p">(</span><span class="bp">cls</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">subquery</span><span class="p">()</span> |
| <span class="p">)</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="bp">cls</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">subquery</span><span class="p">,</span> |
| <span class="n">and_</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">subquery</span><span class="o">.</span><span class="n">c</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> |
| <span class="bp">cls</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">==</span> <span class="n">subquery</span><span class="o">.</span><span class="n">c</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="p">)</span> |
| <span class="k">return</span> <span class="n">dagruns</span></div></div> |
| </pre></div> |
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