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| <h1>Source code for airflow.models.mappedoperator</h1><div class="highlight"><pre> |
| <span></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">import</span> <span class="nn">collections</span> |
| <span class="kn">import</span> <span class="nn">collections.abc</span> |
| <span class="kn">import</span> <span class="nn">datetime</span> |
| <span class="kn">import</span> <span class="nn">functools</span> |
| <span class="kn">import</span> <span class="nn">operator</span> |
| <span class="kn">import</span> <span class="nn">warnings</span> |
| <span class="kn">from</span> <span class="nn">typing</span> <span class="kn">import</span> <span class="p">(</span> |
| <span class="n">TYPE_CHECKING</span><span class="p">,</span> |
| <span class="n">Any</span><span class="p">,</span> |
| <span class="n">ClassVar</span><span class="p">,</span> |
| <span class="n">Collection</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">Iterator</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">Sequence</span><span class="p">,</span> |
| <span class="n">Set</span><span class="p">,</span> |
| <span class="n">Tuple</span><span class="p">,</span> |
| <span class="n">Type</span><span class="p">,</span> |
| <span class="n">Union</span><span class="p">,</span> |
| <span class="p">)</span> |
| |
| <span class="kn">import</span> <span class="nn">attr</span> |
| <span class="kn">import</span> <span class="nn">pendulum</span> |
| <span class="kn">from</span> <span class="nn">sqlalchemy</span> <span class="kn">import</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.session</span> <span class="kn">import</span> <span class="n">Session</span> |
| |
| <span class="kn">from</span> <span class="nn">airflow</span> <span class="kn">import</span> <span class="n">settings</span> |
| <span class="kn">from</span> <span class="nn">airflow.compat.functools</span> <span class="kn">import</span> <span class="n">cache</span><span class="p">,</span> <span class="n">cached_property</span> |
| <span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="kn">import</span> <span class="n">AirflowException</span><span class="p">,</span> <span class="n">UnmappableOperator</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.abstractoperator</span> <span class="kn">import</span> <span class="p">(</span> |
| <span class="n">DEFAULT_OWNER</span><span class="p">,</span> |
| <span class="n">DEFAULT_POOL_SLOTS</span><span class="p">,</span> |
| <span class="n">DEFAULT_PRIORITY_WEIGHT</span><span class="p">,</span> |
| <span class="n">DEFAULT_QUEUE</span><span class="p">,</span> |
| <span class="n">DEFAULT_RETRIES</span><span class="p">,</span> |
| <span class="n">DEFAULT_RETRY_DELAY</span><span class="p">,</span> |
| <span class="n">DEFAULT_TRIGGER_RULE</span><span class="p">,</span> |
| <span class="n">DEFAULT_WEIGHT_RULE</span><span class="p">,</span> |
| <span class="n">AbstractOperator</span><span class="p">,</span> |
| <span class="n">TaskStateChangeCallback</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.pool</span> <span class="kn">import</span> <span class="n">Pool</span> |
| <span class="kn">from</span> <span class="nn">airflow.serialization.enums</span> <span class="kn">import</span> <span class="n">DagAttributeTypes</span> |
| <span class="kn">from</span> <span class="nn">airflow.ti_deps.deps.base_ti_dep</span> <span class="kn">import</span> <span class="n">BaseTIDep</span> |
| <span class="kn">from</span> <span class="nn">airflow.ti_deps.deps.mapped_task_expanded</span> <span class="kn">import</span> <span class="n">MappedTaskIsExpanded</span> |
| <span class="kn">from</span> <span class="nn">airflow.typing_compat</span> <span class="kn">import</span> <span class="n">Literal</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.context</span> <span class="kn">import</span> <span class="n">Context</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.helpers</span> <span class="kn">import</span> <span class="n">is_container</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.operator_resources</span> <span class="kn">import</span> <span class="n">Resources</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.state</span> <span class="kn">import</span> <span class="n">State</span><span class="p">,</span> <span class="n">TaskInstanceState</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.trigger_rule</span> <span class="kn">import</span> <span class="n">TriggerRule</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.types</span> <span class="kn">import</span> <span class="n">NOTSET</span> |
| |
| <span class="k">if</span> <span class="n">TYPE_CHECKING</span><span class="p">:</span> |
| <span class="kn">import</span> <span class="nn">jinja2</span> <span class="c1"># Slow import.</span> |
| |
| <span class="kn">from</span> <span class="nn">airflow.models.baseoperator</span> <span class="kn">import</span> <span class="n">BaseOperator</span><span class="p">,</span> <span class="n">BaseOperatorLink</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.dag</span> <span class="kn">import</span> <span class="n">DAG</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.operator</span> <span class="kn">import</span> <span class="n">Operator</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="kn">from</span> <span class="nn">airflow.models.xcom_arg</span> <span class="kn">import</span> <span class="n">XComArg</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.task_group</span> <span class="kn">import</span> <span class="n">TaskGroup</span> |
| |
| <span class="c1"># BaseOperator.expand() can be called on an XComArg, sequence, or dict (not</span> |
| <span class="c1"># any mapping since we need the value to be ordered).</span> |
| <div class="viewcode-block" id="Mappable"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.Mappable">[docs]</a> <span class="n">Mappable</span> <span class="o">=</span> <span class="n">Union</span><span class="p">[</span><span class="n">XComArg</span><span class="p">,</span> <span class="n">Sequence</span><span class="p">,</span> <span class="nb">dict</span><span class="p">]</span></div> |
| |
| <div class="viewcode-block" id="ValidationSource"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.ValidationSource">[docs]</a><span class="n">ValidationSource</span> <span class="o">=</span> <span class="n">Union</span><span class="p">[</span><span class="n">Literal</span><span class="p">[</span><span class="s2">"expand"</span><span class="p">],</span> <span class="n">Literal</span><span class="p">[</span><span class="s2">"partial"</span><span class="p">]]</span></div> |
| |
| |
| <div class="viewcode-block" id="MAPPABLE_LITERAL_TYPES"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MAPPABLE_LITERAL_TYPES">[docs]</a><span class="n">MAPPABLE_LITERAL_TYPES</span> <span class="o">=</span> <span class="p">(</span><span class="nb">dict</span><span class="p">,</span> <span class="nb">list</span><span class="p">)</span></div> |
| |
| |
| <span class="c1"># For isinstance() check.</span> |
| <span class="nd">@cache</span> |
| <div class="viewcode-block" id="get_mappable_types"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.get_mappable_types">[docs]</a><span class="k">def</span> <span class="nf">get_mappable_types</span><span class="p">()</span> <span class="o">-></span> <span class="n">Tuple</span><span class="p">[</span><span class="nb">type</span><span class="p">,</span> <span class="o">...</span><span class="p">]:</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.xcom_arg</span> <span class="kn">import</span> <span class="n">XComArg</span> |
| |
| <span class="k">return</span> <span class="p">(</span><span class="n">XComArg</span><span class="p">,)</span> <span class="o">+</span> <span class="n">MAPPABLE_LITERAL_TYPES</span></div> |
| |
| |
| <div class="viewcode-block" id="validate_mapping_kwargs"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.validate_mapping_kwargs">[docs]</a><span class="k">def</span> <span class="nf">validate_mapping_kwargs</span><span class="p">(</span><span class="n">op</span><span class="p">:</span> <span class="n">Type</span><span class="p">[</span><span class="s2">"BaseOperator"</span><span class="p">],</span> <span class="n">func</span><span class="p">:</span> <span class="n">ValidationSource</span><span class="p">,</span> <span class="n">value</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Any</span><span class="p">])</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="c1"># use a dict so order of args is same as code order</span> |
| <span class="n">unknown_args</span> <span class="o">=</span> <span class="n">value</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span> |
| <span class="k">for</span> <span class="n">klass</span> <span class="ow">in</span> <span class="n">op</span><span class="o">.</span><span class="n">mro</span><span class="p">():</span> |
| <span class="n">init</span> <span class="o">=</span> <span class="n">klass</span><span class="o">.</span><span class="fm">__init__</span> <span class="c1"># type: ignore[misc]</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">param_names</span> <span class="o">=</span> <span class="n">init</span><span class="o">.</span><span class="n">_BaseOperatorMeta__param_names</span> |
| <span class="k">except</span> <span class="ne">AttributeError</span><span class="p">:</span> |
| <span class="k">continue</span> |
| <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">param_names</span><span class="p">:</span> |
| <span class="n">value</span> <span class="o">=</span> <span class="n">unknown_args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">NOTSET</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">func</span> <span class="o">!=</span> <span class="s2">"expand"</span><span class="p">:</span> |
| <span class="k">continue</span> |
| <span class="k">if</span> <span class="n">value</span> <span class="ow">is</span> <span class="n">NOTSET</span><span class="p">:</span> |
| <span class="k">continue</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">get_mappable_types</span><span class="p">()):</span> |
| <span class="k">continue</span> |
| <span class="n">type_name</span> <span class="o">=</span> <span class="nb">type</span><span class="p">(</span><span class="n">value</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span> |
| <span class="n">error</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="n">op</span><span class="o">.</span><span class="vm">__name__</span><span class="si">}</span><span class="s2">.expand() got an unexpected type </span><span class="si">{</span><span class="n">type_name</span><span class="si">!r}</span><span class="s2"> for keyword argument </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span> |
| <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="n">error</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">unknown_args</span><span class="p">:</span> |
| <span class="k">return</span> <span class="c1"># If we have no args left to check: stop looking at the MRO chain.</span> |
| |
| <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">unknown_args</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> |
| <span class="n">error</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">"an unexpected keyword argument </span><span class="si">{</span><span class="n">unknown_args</span><span class="o">.</span><span class="n">popitem</span><span class="p">()[</span><span class="mi">0</span><span class="p">]</span><span class="si">!r}</span><span class="s2">"</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">names</span> <span class="o">=</span> <span class="s2">", "</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="nb">repr</span><span class="p">(</span><span class="n">n</span><span class="p">)</span> <span class="k">for</span> <span class="n">n</span> <span class="ow">in</span> <span class="n">unknown_args</span><span class="p">)</span> |
| <span class="n">error</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">"unexpected keyword arguments </span><span class="si">{</span><span class="n">names</span><span class="si">}</span><span class="s2">"</span> |
| <span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="n">op</span><span class="o">.</span><span class="vm">__name__</span><span class="si">}</span><span class="s2">.</span><span class="si">{</span><span class="n">func</span><span class="si">}</span><span class="s2">() got </span><span class="si">{</span><span class="n">error</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span></div> |
| |
| |
| <div class="viewcode-block" id="prevent_duplicates"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.prevent_duplicates">[docs]</a><span class="k">def</span> <span class="nf">prevent_duplicates</span><span class="p">(</span><span class="n">kwargs1</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Any</span><span class="p">],</span> <span class="n">kwargs2</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Any</span><span class="p">],</span> <span class="o">*</span><span class="p">,</span> <span class="n">fail_reason</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="n">duplicated_keys</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">kwargs1</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">kwargs2</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">duplicated_keys</span><span class="p">:</span> |
| <span class="k">return</span> |
| <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">duplicated_keys</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="n">fail_reason</span><span class="si">}</span><span class="s2"> argument: </span><span class="si">{</span><span class="n">duplicated_keys</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> |
| <span class="n">duplicated_keys_display</span> <span class="o">=</span> <span class="s2">", "</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="nb">sorted</span><span class="p">(</span><span class="n">duplicated_keys</span><span class="p">))</span> |
| <span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="n">fail_reason</span><span class="si">}</span><span class="s2"> arguments: </span><span class="si">{</span><span class="n">duplicated_keys_display</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span></div> |
| |
| |
| <div class="viewcode-block" id="ensure_xcomarg_return_value"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.ensure_xcomarg_return_value">[docs]</a><span class="k">def</span> <span class="nf">ensure_xcomarg_return_value</span><span class="p">(</span><span class="n">arg</span><span class="p">:</span> <span class="n">Any</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.xcom_arg</span> <span class="kn">import</span> <span class="n">XCOM_RETURN_KEY</span><span class="p">,</span> <span class="n">XComArg</span> |
| |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">arg</span><span class="p">,</span> <span class="n">XComArg</span><span class="p">):</span> |
| <span class="k">if</span> <span class="n">arg</span><span class="o">.</span><span class="n">key</span> <span class="o">!=</span> <span class="n">XCOM_RETURN_KEY</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"cannot map over XCom with custom key </span><span class="si">{</span><span class="n">arg</span><span class="o">.</span><span class="n">key</span><span class="si">!r}</span><span class="s2"> from </span><span class="si">{</span><span class="n">arg</span><span class="o">.</span><span class="n">operator</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> |
| <span class="k">elif</span> <span class="ow">not</span> <span class="n">is_container</span><span class="p">(</span><span class="n">arg</span><span class="p">):</span> |
| <span class="k">return</span> |
| <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">arg</span><span class="p">,</span> <span class="n">collections</span><span class="o">.</span><span class="n">abc</span><span class="o">.</span><span class="n">Mapping</span><span class="p">):</span> |
| <span class="k">for</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">arg</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> |
| <span class="n">ensure_xcomarg_return_value</span><span class="p">(</span><span class="n">v</span><span class="p">)</span> |
| <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">arg</span><span class="p">,</span> <span class="n">collections</span><span class="o">.</span><span class="n">abc</span><span class="o">.</span><span class="n">Iterable</span><span class="p">):</span> |
| <span class="k">for</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">arg</span><span class="p">:</span> |
| <span class="n">ensure_xcomarg_return_value</span><span class="p">(</span><span class="n">v</span><span class="p">)</span></div> |
| |
| |
| <span class="nd">@attr</span><span class="o">.</span><span class="n">define</span><span class="p">(</span><span class="n">kw_only</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="nb">repr</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> |
| <div class="viewcode-block" id="OperatorPartial"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.OperatorPartial">[docs]</a><span class="k">class</span> <span class="nc">OperatorPartial</span><span class="p">:</span> |
| <span class="sd">"""An "intermediate state" returned by ``BaseOperator.partial()``.</span> |
| |
| <span class="sd"> This only exists at DAG-parsing time; the only intended usage is for the</span> |
| <span class="sd"> user to call ``.expand()`` on it at some point (usually in a method chain) to</span> |
| <span class="sd"> create a ``MappedOperator`` to add into the DAG.</span> |
| <span class="sd"> """</span> |
| |
| <div class="viewcode-block" id="OperatorPartial.operator_class"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.OperatorPartial.operator_class">[docs]</a> <span class="n">operator_class</span><span class="p">:</span> <span class="n">Type</span><span class="p">[</span><span class="s2">"BaseOperator"</span><span class="p">]</span></div> |
| <div class="viewcode-block" id="OperatorPartial.kwargs"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.OperatorPartial.kwargs">[docs]</a> <span class="n">kwargs</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Any</span><span class="p">]</span></div> |
| |
| <span class="n">_expand_called</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span> <span class="c1"># Set when expand() is called to ease user debugging.</span> |
| |
| <div class="viewcode-block" id="OperatorPartial.__attrs_post_init__"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.OperatorPartial.__attrs_post_init__">[docs]</a> <span class="k">def</span> <span class="nf">__attrs_post_init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="kn">from</span> <span class="nn">airflow.operators.subdag</span> <span class="kn">import</span> <span class="n">SubDagOperator</span> |
| |
| <span class="k">if</span> <span class="nb">issubclass</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="p">,</span> <span class="n">SubDagOperator</span><span class="p">):</span> |
| <span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"Mapping over deprecated SubDagOperator is not supported"</span><span class="p">)</span> |
| <span class="n">validate_mapping_kwargs</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="p">,</span> <span class="s2">"partial"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">kwargs</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="OperatorPartial.__repr__"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.OperatorPartial.__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="o">-></span> <span class="nb">str</span><span class="p">:</span> |
| <span class="n">args</span> <span class="o">=</span> <span class="s2">", "</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="n">k</span><span class="si">}</span><span class="s2">=</span><span class="si">{</span><span class="n">v</span><span class="si">!r}</span><span class="s2">"</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="bp">self</span><span class="o">.</span><span class="n">kwargs</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> |
| <span class="k">return</span> <span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="o">.</span><span class="vm">__name__</span><span class="si">}</span><span class="s2">.partial(</span><span class="si">{</span><span class="n">args</span><span class="si">}</span><span class="s2">)"</span></div> |
| |
| <div class="viewcode-block" id="OperatorPartial.__del__"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.OperatorPartial.__del__">[docs]</a> <span class="k">def</span> <span class="fm">__del__</span><span class="p">(</span><span class="bp">self</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">_expand_called</span><span class="p">:</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">task_id</span> <span class="o">=</span> <span class="nb">repr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">kwargs</span><span class="p">[</span><span class="s2">"task_id"</span><span class="p">])</span> |
| <span class="k">except</span> <span class="ne">KeyError</span><span class="p">:</span> |
| <span class="n">task_id</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">"at </span><span class="si">{</span><span class="nb">hex</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="si">}</span><span class="s2">"</span> |
| <span class="n">warnings</span><span class="o">.</span><span class="n">warn</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Task </span><span class="si">{</span><span class="n">task_id</span><span class="si">}</span><span class="s2"> was never mapped!"</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="OperatorPartial.expand"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.OperatorPartial.expand">[docs]</a> <span class="k">def</span> <span class="nf">expand</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">**</span><span class="n">mapped_kwargs</span><span class="p">:</span> <span class="s2">"Mappable"</span><span class="p">)</span> <span class="o">-></span> <span class="s2">"MappedOperator"</span><span class="p">:</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">mapped_kwargs</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"no arguments to expand against"</span><span class="p">)</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_expand</span><span class="p">(</span><span class="o">**</span><span class="n">mapped_kwargs</span><span class="p">)</span></div> |
| |
| <span class="k">def</span> <span class="nf">_expand</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">**</span><span class="n">mapped_kwargs</span><span class="p">:</span> <span class="s2">"Mappable"</span><span class="p">)</span> <span class="o">-></span> <span class="s2">"MappedOperator"</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_expand_called</span> <span class="o">=</span> <span class="kc">True</span> |
| |
| <span class="kn">from</span> <span class="nn">airflow.operators.empty</span> <span class="kn">import</span> <span class="n">EmptyOperator</span> |
| |
| <span class="n">validate_mapping_kwargs</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="p">,</span> <span class="s2">"expand"</span><span class="p">,</span> <span class="n">mapped_kwargs</span><span class="p">)</span> |
| <span class="n">prevent_duplicates</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">kwargs</span><span class="p">,</span> <span class="n">mapped_kwargs</span><span class="p">,</span> <span class="n">fail_reason</span><span class="o">=</span><span class="s2">"mapping already partial"</span><span class="p">)</span> |
| <span class="n">ensure_xcomarg_return_value</span><span class="p">(</span><span class="n">mapped_kwargs</span><span class="p">)</span> |
| |
| <span class="n">partial_kwargs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">kwargs</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span> |
| <span class="n">task_id</span> <span class="o">=</span> <span class="n">partial_kwargs</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"task_id"</span><span class="p">)</span> |
| <span class="n">params</span> <span class="o">=</span> <span class="n">partial_kwargs</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"params"</span><span class="p">)</span> |
| <span class="n">dag</span> <span class="o">=</span> <span class="n">partial_kwargs</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"dag"</span><span class="p">)</span> |
| <span class="n">task_group</span> <span class="o">=</span> <span class="n">partial_kwargs</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"task_group"</span><span class="p">)</span> |
| <span class="n">start_date</span> <span class="o">=</span> <span class="n">partial_kwargs</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"start_date"</span><span class="p">)</span> |
| <span class="n">end_date</span> <span class="o">=</span> <span class="n">partial_kwargs</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"end_date"</span><span class="p">)</span> |
| |
| <span class="n">op</span> <span class="o">=</span> <span class="n">MappedOperator</span><span class="p">(</span> |
| <span class="n">operator_class</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="p">,</span> |
| <span class="n">mapped_kwargs</span><span class="o">=</span><span class="n">mapped_kwargs</span><span class="p">,</span> |
| <span class="n">partial_kwargs</span><span class="o">=</span><span class="n">partial_kwargs</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> |
| <span class="n">params</span><span class="o">=</span><span class="n">params</span><span class="p">,</span> |
| <span class="n">deps</span><span class="o">=</span><span class="n">MappedOperator</span><span class="o">.</span><span class="n">deps_for</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="p">),</span> |
| <span class="n">operator_extra_links</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="o">.</span><span class="n">operator_extra_links</span><span class="p">,</span> |
| <span class="n">template_ext</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="o">.</span><span class="n">template_ext</span><span class="p">,</span> |
| <span class="n">template_fields</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="o">.</span><span class="n">template_fields</span><span class="p">,</span> |
| <span class="n">template_fields_renderers</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="o">.</span><span class="n">template_fields_renderers</span><span class="p">,</span> |
| <span class="n">ui_color</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="o">.</span><span class="n">ui_color</span><span class="p">,</span> |
| <span class="n">ui_fgcolor</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="o">.</span><span class="n">ui_fgcolor</span><span class="p">,</span> |
| <span class="n">is_empty</span><span class="o">=</span><span class="nb">issubclass</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="p">,</span> <span class="n">EmptyOperator</span><span class="p">),</span> |
| <span class="n">task_module</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="o">.</span><span class="vm">__module__</span><span class="p">,</span> |
| <span class="n">task_type</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="o">.</span><span class="vm">__name__</span><span class="p">,</span> |
| <span class="n">dag</span><span class="o">=</span><span class="n">dag</span><span class="p">,</span> |
| <span class="n">task_group</span><span class="o">=</span><span class="n">task_group</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="c1"># For classic operators, this points to mapped_kwargs because kwargs</span> |
| <span class="c1"># to BaseOperator.expand() contribute to operator arguments.</span> |
| <span class="n">expansion_kwargs_attr</span><span class="o">=</span><span class="s2">"mapped_kwargs"</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="k">return</span> <span class="n">op</span></div> |
| |
| |
| <span class="nd">@attr</span><span class="o">.</span><span class="n">define</span><span class="p">(</span> |
| <span class="n">kw_only</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> |
| <span class="c1"># Disable custom __getstate__ and __setstate__ generation since it interacts</span> |
| <span class="c1"># badly with Airflow's DAG serialization and pickling. When a mapped task is</span> |
| <span class="c1"># deserialized, subclasses are coerced into MappedOperator, but when it goes</span> |
| <span class="c1"># through DAG pickling, all attributes defined in the subclasses are dropped</span> |
| <span class="c1"># by attrs's custom state management. Since attrs does not do anything too</span> |
| <span class="c1"># special here (the logic is only important for slots=True), we use Python's</span> |
| <span class="c1"># built-in implementation, which works (as proven by good old BaseOperator).</span> |
| <span class="n">getstate_setstate</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <div class="viewcode-block" id="MappedOperator"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator">[docs]</a><span class="p">)</span> |
| <span class="k">class</span> <span class="nc">MappedOperator</span><span class="p">(</span><span class="n">AbstractOperator</span><span class="p">):</span> |
| <span class="sd">"""Object representing a mapped operator in a DAG."""</span> |
| |
| <span class="c1"># This attribute serves double purpose. For a "normal" operator instance</span> |
| <span class="c1"># loaded from DAG, this holds the underlying non-mapped operator class that</span> |
| <span class="c1"># can be used to create an unmapped operator for execution. For an operator</span> |
| <span class="c1"># recreated from a serialized DAG, however, this holds the serialized data</span> |
| <span class="c1"># that can be used to unmap this into a SerializedBaseOperator.</span> |
| <div class="viewcode-block" id="MappedOperator.operator_class"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.operator_class">[docs]</a> <span class="n">operator_class</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="n">Type</span><span class="p">[</span><span class="s2">"BaseOperator"</span><span class="p">],</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Any</span><span class="p">]]</span></div> |
| |
| <div class="viewcode-block" id="MappedOperator.mapped_kwargs"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.mapped_kwargs">[docs]</a> <span class="n">mapped_kwargs</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="s2">"Mappable"</span><span class="p">]</span></div> |
| <div class="viewcode-block" id="MappedOperator.partial_kwargs"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.partial_kwargs">[docs]</a> <span class="n">partial_kwargs</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Any</span><span class="p">]</span></div> |
| |
| <span class="c1"># Needed for serialization.</span> |
| <div class="viewcode-block" id="MappedOperator.task_id"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.task_id">[docs]</a> <span class="n">task_id</span><span class="p">:</span> <span class="nb">str</span></div> |
| <div class="viewcode-block" id="MappedOperator.params"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.params">[docs]</a> <span class="n">params</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">dict</span><span class="p">]</span></div> |
| <div class="viewcode-block" id="MappedOperator.deps"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.deps">[docs]</a> <span class="n">deps</span><span class="p">:</span> <span class="n">FrozenSet</span><span class="p">[</span><span class="n">BaseTIDep</span><span class="p">]</span></div> |
| <div class="viewcode-block" id="MappedOperator.operator_extra_links"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.operator_extra_links">[docs]</a> <span class="n">operator_extra_links</span><span class="p">:</span> <span class="n">Collection</span><span class="p">[</span><span class="s2">"BaseOperatorLink"</span><span class="p">]</span></div> |
| <div class="viewcode-block" id="MappedOperator.template_ext"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.template_ext">[docs]</a> <span class="n">template_ext</span><span class="p">:</span> <span class="n">Sequence</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span></div> |
| <div class="viewcode-block" id="MappedOperator.template_fields"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.template_fields">[docs]</a> <span class="n">template_fields</span><span class="p">:</span> <span class="n">Collection</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span></div> |
| <div class="viewcode-block" id="MappedOperator.template_fields_renderers"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.template_fields_renderers">[docs]</a> <span class="n">template_fields_renderers</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]</span></div> |
| <div class="viewcode-block" id="MappedOperator.ui_color"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.ui_color">[docs]</a> <span class="n">ui_color</span><span class="p">:</span> <span class="nb">str</span></div> |
| <div class="viewcode-block" id="MappedOperator.ui_fgcolor"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.ui_fgcolor">[docs]</a> <span class="n">ui_fgcolor</span><span class="p">:</span> <span class="nb">str</span></div> |
| <span class="n">_is_empty</span><span class="p">:</span> <span class="nb">bool</span> |
| <span class="n">_task_module</span><span class="p">:</span> <span class="nb">str</span> |
| <span class="n">_task_type</span><span class="p">:</span> <span class="nb">str</span> |
| |
| <div class="viewcode-block" id="MappedOperator.dag"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.dag">[docs]</a> <span class="n">dag</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="s2">"DAG"</span><span class="p">]</span></div> |
| <div class="viewcode-block" id="MappedOperator.task_group"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.task_group">[docs]</a> <span class="n">task_group</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="s2">"TaskGroup"</span><span class="p">]</span></div> |
| <div class="viewcode-block" id="MappedOperator.start_date"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.start_date">[docs]</a> <span class="n">start_date</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">pendulum</span><span class="o">.</span><span class="n">DateTime</span><span class="p">]</span></div> |
| <div class="viewcode-block" id="MappedOperator.end_date"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.end_date">[docs]</a> <span class="n">end_date</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">pendulum</span><span class="o">.</span><span class="n">DateTime</span><span class="p">]</span></div> |
| <div class="viewcode-block" id="MappedOperator.upstream_task_ids"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.upstream_task_ids">[docs]</a> <span class="n">upstream_task_ids</span><span class="p">:</span> <span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="n">attr</span><span class="o">.</span><span class="n">ib</span><span class="p">(</span><span class="n">factory</span><span class="o">=</span><span class="nb">set</span><span class="p">,</span> <span class="n">init</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span></div> |
| <div class="viewcode-block" id="MappedOperator.downstream_task_ids"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.downstream_task_ids">[docs]</a> <span class="n">downstream_task_ids</span><span class="p">:</span> <span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="n">attr</span><span class="o">.</span><span class="n">ib</span><span class="p">(</span><span class="n">factory</span><span class="o">=</span><span class="nb">set</span><span class="p">,</span> <span class="n">init</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span></div> |
| |
| <span class="n">_expansion_kwargs_attr</span><span class="p">:</span> <span class="nb">str</span> |
| <span class="sd">"""Where to get kwargs to calculate expansion length against.</span> |
| |
| <span class="sd"> This should be a name to call ``getattr()`` on.</span> |
| <span class="sd"> """</span> |
| |
| <div class="viewcode-block" id="MappedOperator.is_mapped"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.is_mapped">[docs]</a> <span class="n">is_mapped</span><span class="p">:</span> <span class="n">ClassVar</span><span class="p">[</span><span class="nb">bool</span><span class="p">]</span> <span class="o">=</span> <span class="kc">True</span></div> |
| <div class="viewcode-block" id="MappedOperator.subdag"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.subdag">[docs]</a> <span class="n">subdag</span><span class="p">:</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span> <span class="c1"># Since we don't support SubDagOperator, this is always None.</span></div> |
| |
| <div class="viewcode-block" id="MappedOperator.HIDE_ATTRS_FROM_UI"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.HIDE_ATTRS_FROM_UI">[docs]</a> <span class="n">HIDE_ATTRS_FROM_UI</span><span class="p">:</span> <span class="n">ClassVar</span><span class="p">[</span><span class="n">FrozenSet</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="n">AbstractOperator</span><span class="o">.</span><span class="n">HIDE_ATTRS_FROM_UI</span> <span class="o">|</span> <span class="nb">frozenset</span><span class="p">(</span> |
| <span class="p">(</span> |
| <span class="s1">'parse_time_mapped_ti_count'</span><span class="p">,</span> |
| <span class="s1">'operator_class'</span><span class="p">,</span></div> |
| <span class="p">)</span> |
| <span class="p">)</span> |
| |
| <div class="viewcode-block" id="MappedOperator.__hash__"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.__hash__">[docs]</a> <span class="k">def</span> <span class="fm">__hash__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="nb">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="MappedOperator.__repr__"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.__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="sa">f</span><span class="s2">"<Mapped(</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">_task_type</span><span class="si">}</span><span class="s2">): </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">task_id</span><span class="si">}</span><span class="s2">>"</span></div> |
| |
| <div class="viewcode-block" id="MappedOperator.__attrs_post_init__"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.__attrs_post_init__">[docs]</a> <span class="k">def</span> <span class="nf">__attrs_post_init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.xcom_arg</span> <span class="kn">import</span> <span class="n">XComArg</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">_validate_argument_count</span><span class="p">()</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_group</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">task_group</span><span class="o">.</span><span class="n">add</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">dag</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">add_task</span><span class="p">(</span><span class="bp">self</span><span class="p">)</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="bp">self</span><span class="o">.</span><span class="n">mapped_kwargs</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> |
| <span class="n">XComArg</span><span class="o">.</span><span class="n">apply_upstream_relationship</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">v</span><span class="p">)</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="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</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">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">template_fields</span><span class="p">:</span> |
| <span class="n">XComArg</span><span class="o">.</span><span class="n">apply_upstream_relationship</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'sla'</span><span class="p">)</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span> |
| <span class="sa">f</span><span class="s2">"SLAs are unsupported with mapped tasks. Please set `sla=None` for task "</span></div> |
| <span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">task_id</span><span class="si">!r}</span><span class="s2">."</span> |
| <span class="p">)</span> |
| |
| <span class="nd">@classmethod</span> |
| <span class="nd">@cache</span> |
| <div class="viewcode-block" id="MappedOperator.get_serialized_fields"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.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="c1"># Not using 'cls' here since we only want to serialize base fields.</span> |
| <span class="k">return</span> <span class="nb">frozenset</span><span class="p">(</span><span class="n">attr</span><span class="o">.</span><span class="n">fields_dict</span><span class="p">(</span><span class="n">MappedOperator</span><span class="p">))</span> <span class="o">-</span> <span class="p">{</span> |
| <span class="s2">"dag"</span><span class="p">,</span> |
| <span class="s2">"deps"</span><span class="p">,</span> |
| <span class="s2">"is_mapped"</span><span class="p">,</span> |
| <span class="s2">"mapped_kwargs"</span><span class="p">,</span> <span class="c1"># This is needed to be able to accept XComArg.</span> |
| <span class="s2">"subdag"</span><span class="p">,</span> |
| <span class="s2">"task_group"</span><span class="p">,</span> |
| <span class="s2">"upstream_task_ids"</span><span class="p">,</span></div> |
| <span class="p">}</span> |
| |
| <span class="nd">@staticmethod</span> |
| <span class="nd">@cache</span> |
| <div class="viewcode-block" id="MappedOperator.deps_for"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.deps_for">[docs]</a> <span class="k">def</span> <span class="nf">deps_for</span><span class="p">(</span><span class="n">operator_class</span><span class="p">:</span> <span class="n">Type</span><span class="p">[</span><span class="s2">"BaseOperator"</span><span class="p">])</span> <span class="o">-></span> <span class="n">FrozenSet</span><span class="p">[</span><span class="n">BaseTIDep</span><span class="p">]:</span> |
| <span class="n">operator_deps</span> <span class="o">=</span> <span class="n">operator_class</span><span class="o">.</span><span class="n">deps</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">operator_deps</span><span class="p">,</span> <span class="n">collections</span><span class="o">.</span><span class="n">abc</span><span class="o">.</span><span class="n">Set</span><span class="p">):</span> |
| <span class="k">raise</span> <span class="n">UnmappableOperator</span><span class="p">(</span> |
| <span class="sa">f</span><span class="s2">"'deps' must be a set defined as a class-level variable on </span><span class="si">{</span><span class="n">operator_class</span><span class="o">.</span><span class="vm">__name__</span><span class="si">}</span><span class="s2">, "</span> |
| <span class="sa">f</span><span class="s2">"not a </span><span class="si">{</span><span class="nb">type</span><span class="p">(</span><span class="n">operator_deps</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span><span class="si">}</span><span class="s2">"</span> |
| <span class="p">)</span> |
| <span class="k">return</span> <span class="n">operator_deps</span> <span class="o">|</span> <span class="p">{</span><span class="n">MappedTaskIsExpanded</span><span class="p">()}</span></div> |
| |
| <span class="k">def</span> <span class="nf">_validate_argument_count</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""Validate mapping arguments by unmapping with mocked values.</span> |
| |
| <span class="sd"> This ensures the user passed enough arguments in the DAG definition for</span> |
| <span class="sd"> the operator to work in the task runner. This does not guarantee the</span> |
| <span class="sd"> arguments are *valid* (that depends on the actual mapping values), but</span> |
| <span class="sd"> makes sure there are *enough* of them.</span> |
| <span class="sd"> """</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="p">,</span> <span class="nb">type</span><span class="p">):</span> |
| <span class="k">return</span> <span class="c1"># No need to validate deserialized operator.</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="o">.</span><span class="n">validate_mapped_arguments</span><span class="p">(</span><span class="o">**</span><span class="bp">self</span><span class="o">.</span><span class="n">_get_unmap_kwargs</span><span class="p">())</span> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.task_type"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.task_type">[docs]</a> <span class="k">def</span> <span class="nf">task_type</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">str</span><span class="p">:</span> |
| <span class="sd">"""Implementing Operator."""</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_task_type</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.inherits_from_empty_operator"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.inherits_from_empty_operator">[docs]</a> <span class="k">def</span> <span class="nf">inherits_from_empty_operator</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span> |
| <span class="sd">"""Implementing Operator."""</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_is_empty</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.roots"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.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="o">-></span> <span class="n">Sequence</span><span class="p">[</span><span class="n">AbstractOperator</span><span class="p">]:</span> |
| <span class="sd">"""Implementing DAGNode."""</span> |
| <span class="k">return</span> <span class="p">[</span><span class="bp">self</span><span class="p">]</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.leaves"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.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="o">-></span> <span class="n">Sequence</span><span class="p">[</span><span class="n">AbstractOperator</span><span class="p">]:</span> |
| <span class="sd">"""Implementing DAGNode."""</span> |
| <span class="k">return</span> <span class="p">[</span><span class="bp">self</span><span class="p">]</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.owner"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.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="o">-></span> <span class="nb">str</span><span class="p">:</span> <span class="c1"># type: ignore[override]</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"owner"</span><span class="p">,</span> <span class="n">DEFAULT_OWNER</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.email"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.email">[docs]</a> <span class="k">def</span> <span class="nf">email</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Union</span><span class="p">[</span><span class="kc">None</span><span class="p">,</span> <span class="nb">str</span><span class="p">,</span> <span class="n">Iterable</span><span class="p">[</span><span class="nb">str</span><span class="p">]]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"email"</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.trigger_rule"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.trigger_rule">[docs]</a> <span class="k">def</span> <span class="nf">trigger_rule</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">TriggerRule</span><span class="p">:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"trigger_rule"</span><span class="p">,</span> <span class="n">DEFAULT_TRIGGER_RULE</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.depends_on_past"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.depends_on_past">[docs]</a> <span class="k">def</span> <span class="nf">depends_on_past</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span> |
| <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"depends_on_past"</span><span class="p">))</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.wait_for_downstream"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.wait_for_downstream">[docs]</a> <span class="k">def</span> <span class="nf">wait_for_downstream</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span> |
| <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"wait_for_downstream"</span><span class="p">))</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.retries"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.retries">[docs]</a> <span class="k">def</span> <span class="nf">retries</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="nb">int</span><span class="p">]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"retries"</span><span class="p">,</span> <span class="n">DEFAULT_RETRIES</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.queue"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.queue">[docs]</a> <span class="k">def</span> <span class="nf">queue</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">str</span><span class="p">:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"queue"</span><span class="p">,</span> <span class="n">DEFAULT_QUEUE</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.pool"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.pool">[docs]</a> <span class="k">def</span> <span class="nf">pool</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">str</span><span class="p">:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"pool"</span><span class="p">,</span> <span class="n">Pool</span><span class="o">.</span><span class="n">DEFAULT_POOL_NAME</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.pool_slots"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.pool_slots">[docs]</a> <span class="k">def</span> <span class="nf">pool_slots</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"pool_slots"</span><span class="p">,</span> <span class="n">DEFAULT_POOL_SLOTS</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.execution_timeout"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.execution_timeout">[docs]</a> <span class="k">def</span> <span class="nf">execution_timeout</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">timedelta</span><span class="p">]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"execution_timeout"</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.retry_delay"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.retry_delay">[docs]</a> <span class="k">def</span> <span class="nf">retry_delay</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">datetime</span><span class="o">.</span><span class="n">timedelta</span><span class="p">:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"retry_delay"</span><span class="p">,</span> <span class="n">DEFAULT_RETRY_DELAY</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.retry_exponential_backoff"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.retry_exponential_backoff">[docs]</a> <span class="k">def</span> <span class="nf">retry_exponential_backoff</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span> |
| <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"retry_exponential_backoff"</span><span class="p">))</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.priority_weight"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.priority_weight">[docs]</a> <span class="k">def</span> <span class="nf">priority_weight</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">int</span><span class="p">:</span> <span class="c1"># type: ignore[override]</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"priority_weight"</span><span class="p">,</span> <span class="n">DEFAULT_PRIORITY_WEIGHT</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.weight_rule"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.weight_rule">[docs]</a> <span class="k">def</span> <span class="nf">weight_rule</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">int</span><span class="p">:</span> <span class="c1"># type: ignore[override]</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"weight_rule"</span><span class="p">,</span> <span class="n">DEFAULT_WEIGHT_RULE</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.sla"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.sla">[docs]</a> <span class="k">def</span> <span class="nf">sla</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="n">datetime</span><span class="o">.</span><span class="n">timedelta</span><span class="p">]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"sla"</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.max_active_tis_per_dag"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.max_active_tis_per_dag">[docs]</a> <span class="k">def</span> <span class="nf">max_active_tis_per_dag</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="nb">int</span><span class="p">]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"max_active_tis_per_dag"</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.resources"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.resources">[docs]</a> <span class="k">def</span> <span class="nf">resources</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="n">Resources</span><span class="p">]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"resources"</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.on_execute_callback"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.on_execute_callback">[docs]</a> <span class="k">def</span> <span class="nf">on_execute_callback</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="n">TaskStateChangeCallback</span><span class="p">]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on_execute_callback"</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.on_failure_callback"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.on_failure_callback">[docs]</a> <span class="k">def</span> <span class="nf">on_failure_callback</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="n">TaskStateChangeCallback</span><span class="p">]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on_failure_callback"</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.on_retry_callback"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.on_retry_callback">[docs]</a> <span class="k">def</span> <span class="nf">on_retry_callback</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="n">TaskStateChangeCallback</span><span class="p">]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on_retry_callback"</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.on_success_callback"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.on_success_callback">[docs]</a> <span class="k">def</span> <span class="nf">on_success_callback</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="n">TaskStateChangeCallback</span><span class="p">]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on_success_callback"</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.run_as_user"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.run_as_user">[docs]</a> <span class="k">def</span> <span class="nf">run_as_user</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"run_as_user"</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.executor_config"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.executor_config">[docs]</a> <span class="k">def</span> <span class="nf">executor_config</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">dict</span><span class="p">:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"executor_config"</span><span class="p">,</span> <span class="p">{})</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.inlets"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.inlets">[docs]</a> <span class="k">def</span> <span class="nf">inlets</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="n">Any</span><span class="p">]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"inlets"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="MappedOperator.outlets"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.outlets">[docs]</a> <span class="k">def</span> <span class="nf">outlets</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="n">Any</span><span class="p">]:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"outlets"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="MappedOperator.get_dag"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.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="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="s2">"DAG"</span><span class="p">]:</span> |
| <span class="sd">"""Implementing Operator."""</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag</span></div> |
| |
| <div class="viewcode-block" id="MappedOperator.serialize_for_task_group"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.serialize_for_task_group">[docs]</a> <span class="k">def</span> <span class="nf">serialize_for_task_group</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Tuple</span><span class="p">[</span><span class="n">DagAttributeTypes</span><span class="p">,</span> <span class="n">Any</span><span class="p">]:</span> |
| <span class="sd">"""Implementing DAGNode."""</span> |
| <span class="k">return</span> <span class="n">DagAttributeTypes</span><span class="o">.</span><span class="n">OP</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_id</span></div> |
| |
| <span class="k">def</span> <span class="nf">_get_unmap_kwargs</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Any</span><span class="p">]:</span> |
| |
| <span class="k">return</span> <span class="p">{</span> |
| <span class="s2">"task_id"</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_id</span><span class="p">,</span> |
| <span class="s2">"dag"</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag</span><span class="p">,</span> |
| <span class="s2">"task_group"</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_group</span><span class="p">,</span> |
| <span class="s2">"params"</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">params</span><span class="p">,</span> |
| <span class="s2">"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="s2">"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="o">**</span><span class="bp">self</span><span class="o">.</span><span class="n">partial_kwargs</span><span class="p">,</span> |
| <span class="o">**</span><span class="bp">self</span><span class="o">.</span><span class="n">mapped_kwargs</span><span class="p">,</span> |
| <span class="p">}</span> |
| |
| <div class="viewcode-block" id="MappedOperator.unmap"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.unmap">[docs]</a> <span class="k">def</span> <span class="nf">unmap</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">unmap_kwargs</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Any</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">)</span> <span class="o">-></span> <span class="s2">"BaseOperator"</span><span class="p">:</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Get the "normal" Operator after applying the current mapping.</span> |
| |
| <span class="sd"> If ``operator_class`` is not a class (i.e. this DAG has been deserialized) then this will return a</span> |
| <span class="sd"> SerializedBaseOperator that aims to "look like" the real operator.</span> |
| |
| <span class="sd"> :param unmap_kwargs: Override the args to pass to the Operator constructor. Only used when</span> |
| <span class="sd"> ``operator_class`` is still an actual class.</span> |
| |
| <span class="sd"> :meta private:</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">operator_class</span><span class="p">,</span> <span class="nb">type</span><span class="p">):</span> |
| <span class="c1"># We can't simply specify task_id here because BaseOperator further</span> |
| <span class="c1"># mangles the task_id based on the task hierarchy (namely, group_id</span> |
| <span class="c1"># is prepended, and '__N' appended to deduplicate). Instead of</span> |
| <span class="c1"># recreating the whole logic here, we just overwrite task_id later.</span> |
| <span class="k">if</span> <span class="n">unmap_kwargs</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="n">unmap_kwargs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unmap_kwargs</span><span class="p">()</span> |
| <span class="n">op</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="p">(</span><span class="o">**</span><span class="n">unmap_kwargs</span><span class="p">,</span> <span class="n">_airflow_from_mapped</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> |
| <span class="n">op</span><span class="o">.</span><span class="n">task_id</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_id</span> |
| <span class="k">return</span> <span class="n">op</span> |
| |
| <span class="c1"># After a mapped operator is serialized, there's no real way to actually</span> |
| <span class="c1"># unmap it since we've lost access to the underlying operator class.</span> |
| <span class="c1"># This tries its best to simply "forward" all the attributes on this</span> |
| <span class="c1"># mapped operator to a new SerializedBaseOperator instance.</span> |
| <span class="kn">from</span> <span class="nn">airflow.serialization.serialized_objects</span> <span class="kn">import</span> <span class="n">SerializedBaseOperator</span> |
| |
| <span class="n">op</span> <span class="o">=</span> <span class="n">SerializedBaseOperator</span><span class="p">(</span><span class="n">task_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">task_id</span><span class="p">,</span> <span class="n">_airflow_from_mapped</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> |
| <span class="n">SerializedBaseOperator</span><span class="o">.</span><span class="n">populate_operator</span><span class="p">(</span><span class="n">op</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">operator_class</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">op</span></div> |
| |
| <span class="k">def</span> <span class="nf">_get_expansion_kwargs</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="s2">"Mappable"</span><span class="p">]:</span> |
| <span class="sd">"""The kwargs to calculate expansion length against."""</span> |
| <span class="k">return</span> <span class="nb">getattr</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">_expansion_kwargs_attr</span><span class="p">)</span> |
| |
| <span class="k">def</span> <span class="nf">_get_map_lengths</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="nb">str</span><span class="p">,</span> <span class="o">*</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="o">-></span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">int</span><span class="p">]:</span> |
| <span class="sd">"""Return dict of argument name to map length.</span> |
| |
| <span class="sd"> If any arguments are not known right now (upstream task not finished) they will not be present in the</span> |
| <span class="sd"> dict.</span> |
| <span class="sd"> """</span> |
| <span class="c1"># TODO: Find a way to cache this.</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.taskmap</span> <span class="kn">import</span> <span class="n">TaskMap</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.xcom</span> <span class="kn">import</span> <span class="n">XCom</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.xcom_arg</span> <span class="kn">import</span> <span class="n">XComArg</span> |
| |
| <span class="n">expansion_kwargs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_expansion_kwargs</span><span class="p">()</span> |
| |
| <span class="c1"># Populate literal mapped arguments first.</span> |
| <span class="n">map_lengths</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">int</span><span class="p">]</span> <span class="o">=</span> <span class="n">collections</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="n">map_lengths</span><span class="o">.</span><span class="n">update</span><span class="p">((</span><span class="n">k</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">v</span><span class="p">))</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="n">expansion_kwargs</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">v</span><span class="p">,</span> <span class="n">XComArg</span><span class="p">))</span> |
| |
| <span class="c1"># Build a reverse mapping of what arguments each task contributes to.</span> |
| <span class="n">mapped_dep_keys</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="n">collections</span><span class="o">.</span><span class="n">defaultdict</span><span class="p">(</span><span class="nb">set</span><span class="p">)</span> |
| <span class="n">non_mapped_dep_keys</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="n">collections</span><span class="o">.</span><span class="n">defaultdict</span><span class="p">(</span><span class="nb">set</span><span class="p">)</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="n">expansion_kwargs</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">v</span><span class="p">,</span> <span class="n">XComArg</span><span class="p">):</span> |
| <span class="k">continue</span> |
| <span class="k">if</span> <span class="n">v</span><span class="o">.</span><span class="n">operator</span><span class="o">.</span><span class="n">is_mapped</span><span class="p">:</span> |
| <span class="n">mapped_dep_keys</span><span class="p">[</span><span class="n">v</span><span class="o">.</span><span class="n">operator</span><span class="o">.</span><span class="n">task_id</span><span class="p">]</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">non_mapped_dep_keys</span><span class="p">[</span><span class="n">v</span><span class="o">.</span><span class="n">operator</span><span class="o">.</span><span class="n">task_id</span><span class="p">]</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> |
| <span class="c1"># TODO: It's not possible now, but in the future (AIP-42 Phase 2)</span> |
| <span class="c1"># we will add support for depending on one single mapped task</span> |
| <span class="c1"># instance. When that happens, we need to further analyze the mapped</span> |
| <span class="c1"># case to contain only tasks we depend on "as a whole", and put</span> |
| <span class="c1"># those we only depend on individually to the non-mapped lookup.</span> |
| |
| <span class="c1"># Collect lengths from unmapped upstreams.</span> |
| <span class="n">taskmap_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">TaskMap</span><span class="o">.</span><span class="n">task_id</span><span class="p">,</span> <span class="n">TaskMap</span><span class="o">.</span><span class="n">length</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span> |
| <span class="n">TaskMap</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">TaskMap</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="n">TaskMap</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">non_mapped_dep_keys</span><span class="p">),</span> |
| <span class="n">TaskMap</span><span class="o">.</span><span class="n">map_index</span> <span class="o"><</span> <span class="mi">0</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="k">for</span> <span class="n">task_id</span><span class="p">,</span> <span class="n">length</span> <span class="ow">in</span> <span class="n">taskmap_query</span><span class="p">:</span> |
| <span class="k">for</span> <span class="n">mapped_arg_name</span> <span class="ow">in</span> <span class="n">non_mapped_dep_keys</span><span class="p">[</span><span class="n">task_id</span><span class="p">]:</span> |
| <span class="n">map_lengths</span><span class="p">[</span><span class="n">mapped_arg_name</span><span class="p">]</span> <span class="o">+=</span> <span class="n">length</span> |
| |
| <span class="c1"># Collect lengths from mapped upstreams.</span> |
| <span class="n">xcom_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">XCom</span><span class="o">.</span><span class="n">task_id</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">XCom</span><span class="o">.</span><span class="n">map_index</span><span class="p">))</span> |
| <span class="o">.</span><span class="n">group_by</span><span class="p">(</span><span class="n">XCom</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">XCom</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">XCom</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="n">XCom</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">mapped_dep_keys</span><span class="p">),</span> |
| <span class="n">XCom</span><span class="o">.</span><span class="n">map_index</span> <span class="o">>=</span> <span class="mi">0</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="p">)</span> |
| <span class="k">for</span> <span class="n">task_id</span><span class="p">,</span> <span class="n">length</span> <span class="ow">in</span> <span class="n">xcom_query</span><span class="p">:</span> |
| <span class="k">for</span> <span class="n">mapped_arg_name</span> <span class="ow">in</span> <span class="n">mapped_dep_keys</span><span class="p">[</span><span class="n">task_id</span><span class="p">]:</span> |
| <span class="n">map_lengths</span><span class="p">[</span><span class="n">mapped_arg_name</span><span class="p">]</span> <span class="o">+=</span> <span class="n">length</span> |
| <span class="k">return</span> <span class="n">map_lengths</span> |
| |
| <span class="nd">@cache</span> |
| <span class="k">def</span> <span class="nf">_resolve_map_lengths</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="nb">str</span><span class="p">,</span> <span class="o">*</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="o">-></span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">int</span><span class="p">]:</span> |
| <span class="sd">"""Return dict of argument name to map length, or throw if some are not resolvable"""</span> |
| <span class="n">expansion_kwargs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_expansion_kwargs</span><span class="p">()</span> |
| <span class="n">map_lengths</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_map_lengths</span><span class="p">(</span><span class="n">run_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="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">map_lengths</span><span class="p">)</span> <span class="o"><</span> <span class="nb">len</span><span class="p">(</span><span class="n">expansion_kwargs</span><span class="p">):</span> |
| <span class="n">keys</span> <span class="o">=</span> <span class="s2">", "</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="nb">repr</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="nb">sorted</span><span class="p">(</span><span class="nb">set</span><span class="p">(</span><span class="n">expansion_kwargs</span><span class="p">)</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">map_lengths</span><span class="p">)))</span> |
| <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Failed to populate all mapping metadata; missing: </span><span class="si">{</span><span class="n">keys</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> |
| |
| <span class="k">return</span> <span class="n">map_lengths</span> |
| |
| <div class="viewcode-block" id="MappedOperator.expand_mapped_task"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.expand_mapped_task">[docs]</a> <span class="k">def</span> <span class="nf">expand_mapped_task</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="nb">str</span><span class="p">,</span> <span class="o">*</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="o">-></span> <span class="n">Tuple</span><span class="p">[</span><span class="n">Sequence</span><span class="p">[</span><span class="s2">"TaskInstance"</span><span class="p">],</span> <span class="nb">int</span><span class="p">]:</span> |
| <span class="sd">"""Create the mapped task instances for mapped task.</span> |
| |
| <span class="sd"> :return: The newly created mapped TaskInstances (if any) in ascending order by map index, and the</span> |
| <span class="sd"> maximum map_index.</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="kn">from</span> <span class="nn">airflow.settings</span> <span class="kn">import</span> <span class="n">task_instance_mutation_hook</span> |
| |
| <span class="n">total_length</span> <span class="o">=</span> <span class="n">functools</span><span class="o">.</span><span class="n">reduce</span><span class="p">(</span> |
| <span class="n">operator</span><span class="o">.</span><span class="n">mul</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_resolve_map_lengths</span><span class="p">(</span><span class="n">run_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="o">.</span><span class="n">values</span><span class="p">()</span> |
| <span class="p">)</span> |
| |
| <span class="n">state</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">TaskInstanceState</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="n">unmapped_ti</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">TaskInstance</span><span class="p">]</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">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">task_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_id</span><span class="p">,</span> |
| <span class="n">TaskInstance</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="n">TaskInstance</span><span class="o">.</span><span class="n">map_index</span> <span class="o">==</span> <span class="o">-</span><span class="mi">1</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="o">.</span><span class="n">unfinished</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="o">.</span><span class="n">one_or_none</span><span class="p">()</span> |
| <span class="p">)</span> |
| |
| <span class="n">all_expanded_tis</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="n">TaskInstance</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span> |
| |
| <span class="k">if</span> <span class="n">unmapped_ti</span><span class="p">:</span> |
| <span class="c1"># The unmapped task instance still exists and is unfinished, i.e. we</span> |
| <span class="c1"># haven't tried to run it before.</span> |
| <span class="k">if</span> <span class="n">total_length</span> <span class="o"><</span> <span class="mi">1</span><span class="p">:</span> |
| <span class="c1"># If the upstream maps this to a zero-length value, simply marked the</span> |
| <span class="c1"># unmapped task instance as SKIPPED (if needed).</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">"Marking </span><span class="si">%s</span><span class="s2"> as SKIPPED since the map has </span><span class="si">%d</span><span class="s2"> values to expand"</span><span class="p">,</span> |
| <span class="n">unmapped_ti</span><span class="p">,</span> |
| <span class="n">total_length</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="n">unmapped_ti</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="n">TaskInstanceState</span><span class="o">.</span><span class="n">SKIPPED</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="c1"># Otherwise convert this into the first mapped index, and create</span> |
| <span class="c1"># TaskInstance for other indexes.</span> |
| <span class="n">unmapped_ti</span><span class="o">.</span><span class="n">map_index</span> <span class="o">=</span> <span class="mi">0</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">"Updated in place to become </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">unmapped_ti</span><span class="p">)</span> |
| <span class="n">all_expanded_tis</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">unmapped_ti</span><span class="p">)</span> |
| <span class="n">state</span> <span class="o">=</span> <span class="n">unmapped_ti</span><span class="o">.</span><span class="n">state</span> |
| <span class="n">indexes_to_map</span> <span class="o">=</span> <span class="nb">range</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="n">total_length</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="c1"># Only create "missing" ones.</span> |
| <span class="n">current_max_mapping</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">max</span><span class="p">(</span><span class="n">TaskInstance</span><span class="o">.</span><span class="n">map_index</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">task_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_id</span><span class="p">,</span> |
| <span class="n">TaskInstance</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="p">)</span> |
| <span class="o">.</span><span class="n">scalar</span><span class="p">()</span> |
| <span class="p">)</span> |
| <span class="n">indexes_to_map</span> <span class="o">=</span> <span class="nb">range</span><span class="p">(</span><span class="n">current_max_mapping</span> <span class="o">+</span> <span class="mi">1</span><span class="p">,</span> <span class="n">total_length</span><span class="p">)</span> |
| |
| <span class="k">for</span> <span class="n">index</span> <span class="ow">in</span> <span class="n">indexes_to_map</span><span class="p">:</span> |
| <span class="c1"># TODO: Make more efficient with bulk_insert_mappings/bulk_save_mappings.</span> |
| <span class="n">ti</span> <span class="o">=</span> <span class="n">TaskInstance</span><span class="p">(</span><span class="bp">self</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">map_index</span><span class="o">=</span><span class="n">index</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="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">"Expanding TIs upserted </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">ti</span><span class="p">)</span> |
| <span class="n">task_instance_mutation_hook</span><span class="p">(</span><span class="n">ti</span><span class="p">)</span> |
| <span class="n">ti</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">merge</span><span class="p">(</span><span class="n">ti</span><span class="p">)</span> |
| <span class="n">ti</span><span class="o">.</span><span class="n">refresh_from_task</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="c1"># session.merge() loses task information.</span> |
| <span class="n">all_expanded_tis</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">ti</span><span class="p">)</span> |
| |
| <span class="c1"># Set to "REMOVED" any (old) TaskInstances with map indices greater</span> |
| <span class="c1"># than the current map value</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">task_id</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_id</span><span class="p">,</span> |
| <span class="n">TaskInstance</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="n">TaskInstance</span><span class="o">.</span><span class="n">map_index</span> <span class="o">>=</span> <span class="n">total_length</span><span class="p">,</span> |
| <span class="p">)</span><span class="o">.</span><span class="n">update</span><span class="p">({</span><span class="n">TaskInstance</span><span class="o">.</span><span class="n">state</span><span class="p">:</span> <span class="n">TaskInstanceState</span><span class="o">.</span><span class="n">REMOVED</span><span class="p">})</span> |
| |
| <span class="n">session</span><span class="o">.</span><span class="n">flush</span><span class="p">()</span> |
| <span class="k">return</span> <span class="n">all_expanded_tis</span><span class="p">,</span> <span class="n">total_length</span></div> |
| |
| <div class="viewcode-block" id="MappedOperator.prepare_for_execution"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.prepare_for_execution">[docs]</a> <span class="k">def</span> <span class="nf">prepare_for_execution</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="s2">"MappedOperator"</span><span class="p">:</span> |
| <span class="c1"># Since a mapped operator cannot be used for execution, and an unmapped</span> |
| <span class="c1"># BaseOperator needs to be created later (see render_template_fields),</span> |
| <span class="c1"># we don't need to create a copy of the MappedOperator here.</span> |
| <span class="k">return</span> <span class="bp">self</span></div> |
| |
| <div class="viewcode-block" id="MappedOperator.render_template_fields"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.render_template_fields">[docs]</a> <span class="k">def</span> <span class="nf">render_template_fields</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> |
| <span class="n">context</span><span class="p">:</span> <span class="n">Context</span><span class="p">,</span> |
| <span class="n">jinja_env</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="s2">"jinja2.Environment"</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> |
| <span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="s2">"BaseOperator"</span><span class="p">]:</span> |
| <span class="sd">"""Template all attributes listed in template_fields.</span> |
| |
| <span class="sd"> Different from the BaseOperator implementation, this renders the</span> |
| <span class="sd"> template fields on the *unmapped* BaseOperator.</span> |
| |
| <span class="sd"> :param context: Dict with values to apply on content</span> |
| <span class="sd"> :param jinja_env: Jinja environment</span> |
| <span class="sd"> :return: The unmapped, populated BaseOperator</span> |
| <span class="sd"> """</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">jinja_env</span><span class="p">:</span> |
| <span class="n">jinja_env</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_template_env</span><span class="p">()</span> |
| <span class="c1"># Before we unmap we have to resolve the mapped arguments, otherwise the real operator constructor</span> |
| <span class="c1"># could be called with an XComArg, rather than the value it resolves to.</span> |
| <span class="c1">#</span> |
| <span class="c1"># We also need to resolve _all_ mapped arguments, even if they aren't marked as templated</span> |
| <span class="n">kwargs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unmap_kwargs</span><span class="p">()</span> |
| |
| <span class="n">template_fields</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">template_fields</span><span class="p">)</span> |
| |
| <span class="c1"># Ideally we'd like to pass in session as an argument to this function, but since operators _could_</span> |
| <span class="c1"># override this we can't easily change this function signature.</span> |
| <span class="c1"># We can't use @provide_session, as that closes and expunges everything, which we don't want to do</span> |
| <span class="c1"># when we are so "deep" in the weeds here.</span> |
| <span class="c1">#</span> |
| <span class="c1"># Nor do we want to close the session -- that would expunge all the things from the internal cache</span> |
| <span class="c1"># which we don't want to do either</span> |
| <span class="n">session</span> <span class="o">=</span> <span class="n">settings</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">_resolve_expansion_kwargs</span><span class="p">(</span><span class="n">kwargs</span><span class="p">,</span> <span class="n">template_fields</span><span class="p">,</span> <span class="n">context</span><span class="p">,</span> <span class="n">session</span><span class="p">)</span> |
| |
| <span class="n">unmapped_task</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">unmap</span><span class="p">(</span><span class="n">unmap_kwargs</span><span class="o">=</span><span class="n">kwargs</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_do_render_template_fields</span><span class="p">(</span> |
| <span class="n">parent</span><span class="o">=</span><span class="n">unmapped_task</span><span class="p">,</span> |
| <span class="n">template_fields</span><span class="o">=</span><span class="n">template_fields</span><span class="p">,</span> |
| <span class="n">context</span><span class="o">=</span><span class="n">context</span><span class="p">,</span> |
| <span class="n">jinja_env</span><span class="o">=</span><span class="n">jinja_env</span><span class="p">,</span> |
| <span class="n">seen_oids</span><span class="o">=</span><span class="nb">set</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="p">)</span> |
| <span class="k">return</span> <span class="n">unmapped_task</span></div> |
| |
| <span class="k">def</span> <span class="nf">_resolve_expansion_kwargs</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> <span class="n">kwargs</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Any</span><span class="p">],</span> <span class="n">template_fields</span><span class="p">:</span> <span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">],</span> <span class="n">context</span><span class="p">:</span> <span class="n">Context</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="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""Update mapped fields in place in kwargs dict"""</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.xcom_arg</span> <span class="kn">import</span> <span class="n">XComArg</span> |
| |
| <span class="n">expansion_kwargs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_expansion_kwargs</span><span class="p">()</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="n">expansion_kwargs</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">v</span><span class="p">,</span> <span class="n">XComArg</span><span class="p">):</span> |
| <span class="n">v</span> <span class="o">=</span> <span class="n">v</span><span class="o">.</span><span class="n">resolve</span><span class="p">(</span><span class="n">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">v</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_expand_mapped_field</span><span class="p">(</span><span class="n">k</span><span class="p">,</span> <span class="n">v</span><span class="p">,</span> <span class="n">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">template_fields</span><span class="o">.</span><span class="n">discard</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> |
| <span class="n">kwargs</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="o">=</span> <span class="n">v</span> |
| |
| <span class="k">def</span> <span class="nf">_expand_mapped_field</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">value</span><span class="p">:</span> <span class="n">Any</span><span class="p">,</span> <span class="n">context</span><span class="p">:</span> <span class="n">Context</span><span class="p">,</span> <span class="o">*</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="o">-></span> <span class="n">Any</span><span class="p">:</span> |
| <span class="n">map_index</span> <span class="o">=</span> <span class="n">context</span><span class="p">[</span><span class="s2">"ti"</span><span class="p">]</span><span class="o">.</span><span class="n">map_index</span> |
| <span class="k">if</span> <span class="n">map_index</span> <span class="o"><</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">value</span> |
| <span class="n">expansion_kwargs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_expansion_kwargs</span><span class="p">()</span> |
| <span class="n">all_lengths</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_resolve_map_lengths</span><span class="p">(</span><span class="n">context</span><span class="p">[</span><span class="s2">"run_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="k">def</span> <span class="nf">_find_index_for_this_field</span><span class="p">(</span><span class="n">index</span><span class="p">:</span> <span class="nb">int</span><span class="p">)</span> <span class="o">-></span> <span class="nb">int</span><span class="p">:</span> |
| <span class="c1"># Need to use self.mapped_kwargs for the original argument order.</span> |
| <span class="k">for</span> <span class="n">mapped_key</span> <span class="ow">in</span> <span class="nb">reversed</span><span class="p">(</span><span class="nb">list</span><span class="p">(</span><span class="n">expansion_kwargs</span><span class="p">)):</span> |
| <span class="n">mapped_length</span> <span class="o">=</span> <span class="n">all_lengths</span><span class="p">[</span><span class="n">mapped_key</span><span class="p">]</span> |
| <span class="k">if</span> <span class="n">mapped_length</span> <span class="o"><</span> <span class="mi">1</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"cannot expand field mapped to length </span><span class="si">{</span><span class="n">mapped_length</span><span class="si">!r}</span><span class="s2">"</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">mapped_key</span> <span class="o">==</span> <span class="n">key</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">index</span> <span class="o">%</span> <span class="n">mapped_length</span> |
| <span class="n">index</span> <span class="o">//=</span> <span class="n">mapped_length</span> |
| <span class="k">return</span> <span class="o">-</span><span class="mi">1</span> |
| |
| <span class="n">found_index</span> <span class="o">=</span> <span class="n">_find_index_for_this_field</span><span class="p">(</span><span class="n">map_index</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">found_index</span> <span class="o"><</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">value</span> |
| <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">collections</span><span class="o">.</span><span class="n">abc</span><span class="o">.</span><span class="n">Sequence</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">value</span><span class="p">[</span><span class="n">found_index</span><span class="p">]</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="nb">dict</span><span class="p">):</span> |
| <span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"can't map over value of type </span><span class="si">{</span><span class="nb">type</span><span class="p">(</span><span class="n">value</span><span class="p">)</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> |
| <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">k</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">value</span><span class="o">.</span><span class="n">items</span><span class="p">()):</span> |
| <span class="k">if</span> <span class="n">i</span> <span class="o">==</span> <span class="n">found_index</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> |
| <span class="k">raise</span> <span class="ne">IndexError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"index </span><span class="si">{</span><span class="n">map_index</span><span class="si">}</span><span class="s2"> is over mapped length"</span><span class="p">)</span> |
| |
| <div class="viewcode-block" id="MappedOperator.iter_mapped_dependencies"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.iter_mapped_dependencies">[docs]</a> <span class="k">def</span> <span class="nf">iter_mapped_dependencies</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Iterator</span><span class="p">[</span><span class="s2">"Operator"</span><span class="p">]:</span> |
| <span class="sd">"""Upstream dependencies that provide XComs used by this task for task mapping."""</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.xcom_arg</span> <span class="kn">import</span> <span class="n">XComArg</span> |
| |
| <span class="k">for</span> <span class="n">ref</span> <span class="ow">in</span> <span class="n">XComArg</span><span class="o">.</span><span class="n">iter_xcom_args</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_get_expansion_kwargs</span><span class="p">()):</span> |
| <span class="k">yield</span> <span class="n">ref</span><span class="o">.</span><span class="n">operator</span></div> |
| |
| <span class="nd">@cached_property</span> |
| <div class="viewcode-block" id="MappedOperator.parse_time_mapped_ti_count"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.parse_time_mapped_ti_count">[docs]</a> <span class="k">def</span> <span class="nf">parse_time_mapped_ti_count</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="nb">int</span><span class="p">]:</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Number of mapped TaskInstances that can be created at DagRun create time.</span> |
| |
| <span class="sd"> :return: None if non-literal mapped arg encountered, or else total number of mapped TIs this task</span> |
| <span class="sd"> should have</span> |
| <span class="sd"> """</span> |
| <span class="n">total</span> <span class="o">=</span> <span class="mi">0</span> |
| |
| <span class="k">for</span> <span class="n">value</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_expansion_kwargs</span><span class="p">()</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">MAPPABLE_LITERAL_TYPES</span><span class="p">):</span> |
| <span class="c1"># None literal type encountered, so give up</span> |
| <span class="k">return</span> <span class="kc">None</span> |
| <span class="k">if</span> <span class="n">total</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="n">total</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">total</span> <span class="o">*=</span> <span class="nb">len</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">total</span></div> |
| |
| <span class="nd">@cache</span> |
| <div class="viewcode-block" id="MappedOperator.run_time_mapped_ti_count"><a class="viewcode-back" href="../../../_api/airflow/models/mappedoperator/index.html#airflow.models.mappedoperator.MappedOperator.run_time_mapped_ti_count">[docs]</a> <span class="k">def</span> <span class="nf">run_time_mapped_ti_count</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="nb">str</span><span class="p">,</span> <span class="o">*</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="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="nb">int</span><span class="p">]:</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Number of mapped TaskInstances that can be created at run time, or None if upstream tasks are not</span> |
| <span class="sd"> complete yet.</span> |
| |
| <span class="sd"> :return: None if upstream tasks are not complete yet, or else total number of mapped TIs this task</span> |
| <span class="sd"> should have</span> |
| <span class="sd"> """</span> |
| |
| <span class="n">lengths</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_map_lengths</span><span class="p">(</span><span class="n">run_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">expansion_kwargs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_expansion_kwargs</span><span class="p">()</span> |
| |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">lengths</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expansion_kwargs</span><span class="p">:</span> |
| <span class="k">return</span> <span class="kc">None</span> |
| |
| <span class="n">total</span> <span class="o">=</span> <span class="mi">1</span> |
| <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">expansion_kwargs</span><span class="p">:</span> |
| <span class="n">val</span> <span class="o">=</span> <span class="n">lengths</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">val</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">return</span> <span class="kc">None</span> |
| <span class="n">total</span> <span class="o">*=</span> <span class="n">val</span> |
| |
| <span class="k">return</span> <span class="n">total</span></div></div> |
| </pre></div> |
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