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[31/34] incubator-airflow-site git commit: Initial commit
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+ <h1>Source code for airflow.models</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed under the Apache License, Version 2.0 (the "License");</span>
+<span class="c1"># you may not use this file except in compliance with the License.</span>
+<span class="c1"># 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, software</span>
+<span class="c1"># distributed under the License is distributed on an "AS IS" BASIS,</span>
+<span class="c1"># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
+<span class="c1"># See the License for the specific language governing permissions and</span>
+<span class="c1"># limitations under the License.</span>
+<span class="kn">from</span> <span class="nn">__future__</span> <span class="kn">import</span> <span class="n">absolute_import</span>
+<span class="kn">from</span> <span class="nn">__future__</span> <span class="kn">import</span> <span class="n">division</span>
+<span class="kn">from</span> <span class="nn">__future__</span> <span class="kn">import</span> <span class="n">print_function</span>
+<span class="kn">from</span> <span class="nn">__future__</span> <span class="kn">import</span> <span class="n">unicode_literals</span>
+
+<span class="kn">from</span> <span class="nn">future.standard_library</span> <span class="kn">import</span> <span class="n">install_aliases</span>
+
+<span class="n">install_aliases</span><span class="p">()</span>
+<span class="kn">from</span> <span class="nn">builtins</span> <span class="kn">import</span> <span class="nb">str</span>
+<span class="kn">from</span> <span class="nn">builtins</span> <span class="kn">import</span> <span class="nb">object</span><span class="p">,</span> <span class="nb">bytes</span>
+<span class="kn">import</span> <span class="nn">copy</span>
+<span class="kn">from</span> <span class="nn">collections</span> <span class="kn">import</span> <span class="n">namedtuple</span>
+<span class="kn">from</span> <span class="nn">datetime</span> <span class="kn">import</span> <span class="n">datetime</span><span class="p">,</span> <span class="n">timedelta</span>
+<span class="kn">import</span> <span class="nn">dill</span>
+<span class="kn">import</span> <span class="nn">functools</span>
+<span class="kn">import</span> <span class="nn">getpass</span>
+<span class="kn">import</span> <span class="nn">imp</span>
+<span class="kn">import</span> <span class="nn">importlib</span>
+<span class="kn">import</span> <span class="nn">zipfile</span>
+<span class="kn">import</span> <span class="nn">jinja2</span>
+<span class="kn">import</span> <span class="nn">json</span>
+<span class="kn">import</span> <span class="nn">logging</span>
+<span class="kn">import</span> <span class="nn">os</span>
+<span class="kn">import</span> <span class="nn">pickle</span>
+<span class="kn">import</span> <span class="nn">re</span>
+<span class="kn">import</span> <span class="nn">signal</span>
+<span class="kn">import</span> <span class="nn">socket</span>
+<span class="kn">import</span> <span class="nn">sys</span>
+<span class="kn">import</span> <span class="nn">textwrap</span>
+<span class="kn">import</span> <span class="nn">traceback</span>
+<span class="kn">import</span> <span class="nn">warnings</span>
+<span class="kn">from</span> <span class="nn">urllib.parse</span> <span class="kn">import</span> <span class="n">urlparse</span>
+
+<span class="kn">from</span> <span class="nn">sqlalchemy</span> <span class="kn">import</span> <span class="p">(</span>
+ <span class="n">Column</span><span class="p">,</span> <span class="n">Integer</span><span class="p">,</span> <span class="n">String</span><span class="p">,</span> <span class="n">DateTime</span><span class="p">,</span> <span class="n">Text</span><span class="p">,</span> <span class="n">Boolean</span><span class="p">,</span> <span class="n">ForeignKey</span><span class="p">,</span> <span class="n">PickleType</span><span class="p">,</span>
+ <span class="n">Index</span><span class="p">,</span> <span class="n">Float</span><span class="p">)</span>
+<span class="kn">from</span> <span class="nn">sqlalchemy</span> <span class="kn">import</span> <span class="n">case</span><span class="p">,</span> <span class="n">func</span><span class="p">,</span> <span class="n">or_</span><span class="p">,</span> <span class="n">and_</span>
+<span class="kn">from</span> <span class="nn">sqlalchemy.ext.declarative</span> <span class="kn">import</span> <span class="n">declarative_base</span><span class="p">,</span> <span class="n">declared_attr</span>
+<span class="kn">from</span> <span class="nn">sqlalchemy.dialects.mysql</span> <span class="kn">import</span> <span class="n">LONGTEXT</span>
+<span class="kn">from</span> <span class="nn">sqlalchemy.orm</span> <span class="kn">import</span> <span class="n">relationship</span><span class="p">,</span> <span class="n">synonym</span>
+
+<span class="kn">from</span> <span class="nn">croniter</span> <span class="kn">import</span> <span class="n">croniter</span>
+<span class="kn">import</span> <span class="nn">six</span>
+
+<span class="kn">from</span> <span class="nn">airflow</span> <span class="kn">import</span> <span class="n">settings</span><span class="p">,</span> <span class="n">utils</span>
+<span class="kn">from</span> <span class="nn">airflow.executors</span> <span class="kn">import</span> <span class="n">DEFAULT_EXECUTOR</span><span class="p">,</span> <span class="n">LocalExecutor</span>
+<span class="kn">from</span> <span class="nn">airflow</span> <span class="kn">import</span> <span class="n">configuration</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">AirflowSkipException</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.dates</span> <span class="kn">import</span> <span class="n">cron_presets</span><span class="p">,</span> <span class="n">date_range</span> <span class="k">as</span> <span class="n">utils_date_range</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.db</span> <span class="kn">import</span> <span class="n">provide_session</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="kn">import</span> <span class="n">apply_defaults</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.email</span> <span class="kn">import</span> <span class="n">send_email</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.helpers</span> <span class="kn">import</span> <span class="p">(</span>
+ <span class="n">as_tuple</span><span class="p">,</span> <span class="n">is_container</span><span class="p">,</span> <span class="n">is_in</span><span class="p">,</span> <span class="n">validate_key</span><span class="p">,</span> <span class="n">pprinttable</span><span class="p">)</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.logging</span> <span class="kn">import</span> <span class="n">LoggingMixin</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="kn">from</span> <span class="nn">airflow.utils.timeout</span> <span class="kn">import</span> <span class="n">timeout</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="n">Base</span> <span class="o">=</span> <span class="n">declarative_base</span><span class="p">()</span>
+<span class="n">ID_LEN</span> <span class="o">=</span> <span class="mi">250</span>
+<span class="n">SQL_ALCHEMY_CONN</span> <span class="o">=</span> <span class="n">configuration</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'core'</span><span class="p">,</span> <span class="s1">'SQL_ALCHEMY_CONN'</span><span class="p">)</span>
+<span class="n">DAGS_FOLDER</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">expanduser</span><span class="p">(</span><span class="n">configuration</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'core'</span><span class="p">,</span> <span class="s1">'DAGS_FOLDER'</span><span class="p">))</span>
+<span class="n">XCOM_RETURN_KEY</span> <span class="o">=</span> <span class="s1">'return_value'</span>
+
+<span class="n">Stats</span> <span class="o">=</span> <span class="n">settings</span><span class="o">.</span><span class="n">Stats</span>
+
+<span class="n">ENCRYPTION_ON</span> <span class="o">=</span> <span class="bp">False</span>
+<span class="k">try</span><span class="p">:</span>
+ <span class="kn">from</span> <span class="nn">cryptography.fernet</span> <span class="kn">import</span> <span class="n">Fernet</span>
+ <span class="n">FERNET</span> <span class="o">=</span> <span class="n">Fernet</span><span class="p">(</span><span class="n">configuration</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'core'</span><span class="p">,</span> <span class="s1">'FERNET_KEY'</span><span class="p">)</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s1">'utf-8'</span><span class="p">))</span>
+ <span class="n">ENCRYPTION_ON</span> <span class="o">=</span> <span class="bp">True</span>
+<span class="k">except</span><span class="p">:</span>
+ <span class="k">pass</span>
+
+<span class="k">if</span> <span class="s1">'mysql'</span> <span class="ow">in</span> <span class="n">SQL_ALCHEMY_CONN</span><span class="p">:</span>
+ <span class="n">LongText</span> <span class="o">=</span> <span class="n">LONGTEXT</span>
+<span class="k">else</span><span class="p">:</span>
+ <span class="n">LongText</span> <span class="o">=</span> <span class="n">Text</span>
+
+<span class="c1"># used by DAG context_managers</span>
+<span class="n">_CONTEXT_MANAGER_DAG</span> <span class="o">=</span> <span class="bp">None</span>
+
+
+<span class="k">def</span> <span class="nf">clear_task_instances</span><span class="p">(</span><span class="n">tis</span><span class="p">,</span> <span class="n">session</span><span class="p">,</span> <span class="n">activate_dag_runs</span><span class="o">=</span><span class="bp">True</span><span class="p">):</span>
+ <span class="sd">'''</span>
+<span class="sd"> Clears a set of task instances, but makes sure the running ones</span>
+<span class="sd"> get killed.</span>
+<span class="sd"> '''</span>
+ <span class="n">job_ids</span> <span class="o">=</span> <span class="p">[]</span>
+ <span class="k">for</span> <span class="n">ti</span> <span class="ow">in</span> <span class="n">tis</span><span class="p">:</span>
+ <span class="k">if</span> <span class="n">ti</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">State</span><span class="o">.</span><span class="n">RUNNING</span><span class="p">:</span>
+ <span class="k">if</span> <span class="n">ti</span><span class="o">.</span><span class="n">job_id</span><span class="p">:</span>
+ <span class="n">ti</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="n">State</span><span class="o">.</span><span class="n">SHUTDOWN</span>
+ <span class="n">job_ids</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">ti</span><span class="o">.</span><span class="n">job_id</span><span class="p">)</span>
+ <span class="c1"># todo: this creates an issue with the webui tests</span>
+ <span class="c1">#elif ti.state != State.REMOVED:</span>
+ <span class="c1"># ti.state = State.NONE</span>
+ <span class="c1"># session.merge(ti)</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">session</span><span class="o">.</span><span class="n">delete</span><span class="p">(</span><span class="n">ti</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">job_ids</span><span class="p">:</span>
+ <span class="kn">from</span> <span class="nn">airflow.jobs</span> <span class="kn">import</span> <span class="n">BaseJob</span> <span class="k">as</span> <span class="n">BJ</span>
+ <span class="k">for</span> <span class="n">job</span> <span class="ow">in</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">BJ</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">BJ</span><span class="o">.</span><span class="n">id</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="n">job_ids</span><span class="p">))</span><span class="o">.</span><span class="n">all</span><span class="p">():</span>
+ <span class="n">job</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="n">State</span><span class="o">.</span><span class="n">SHUTDOWN</span>
+ <span class="k">if</span> <span class="n">activate_dag_runs</span><span class="p">:</span>
+ <span class="n">execution_dates</span> <span class="o">=</span> <span class="p">{</span><span class="n">ti</span><span class="o">.</span><span class="n">execution_date</span> <span class="k">for</span> <span class="n">ti</span> <span class="ow">in</span> <span class="n">tis</span><span class="p">}</span>
+ <span class="n">dag_ids</span> <span class="o">=</span> <span class="p">{</span><span class="n">ti</span><span class="o">.</span><span class="n">dag_id</span> <span class="k">for</span> <span class="n">ti</span> <span class="ow">in</span> <span class="n">tis</span><span class="p">}</span>
+ <span class="n">drs</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">DagRun</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span>
+ <span class="n">DagRun</span><span class="o">.</span><span class="n">dag_id</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="n">dag_ids</span><span class="p">),</span>
+ <span class="n">DagRun</span><span class="o">.</span><span class="n">execution_date</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="n">execution_dates</span><span class="p">),</span>
+ <span class="p">)</span><span class="o">.</span><span class="n">all</span><span class="p">()</span>
+ <span class="k">for</span> <span class="n">dr</span> <span class="ow">in</span> <span class="n">drs</span><span class="p">:</span>
+ <span class="n">dr</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="n">State</span><span class="o">.</span><span class="n">RUNNING</span>
+ <span class="n">dr</span><span class="o">.</span><span class="n">start_date</span> <span class="o">=</span> <span class="n">datetime</span><span class="o">.</span><span class="n">now</span><span class="p">()</span>
+
+
+<div class="viewcode-block" id="DagBag"><a class="viewcode-back" href="../../code.html#airflow.models.DagBag">[docs]</a><span class="k">class</span> <span class="nc">DagBag</span><span class="p">(</span><span class="n">LoggingMixin</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> A dagbag is a collection of dags, parsed out of a folder tree and has high</span>
+<span class="sd"> level configuration settings, like what database to use as a backend and</span>
+<span class="sd"> what executor to use to fire off tasks. This makes it easier to run</span>
+<span class="sd"> distinct environments for say production and development, tests, or for</span>
+<span class="sd"> different teams or security profiles. What would have been system level</span>
+<span class="sd"> settings are now dagbag level so that one system can run multiple,</span>
+<span class="sd"> independent settings sets.</span>
+
+<span class="sd"> :param dag_folder: the folder to scan to find DAGs</span>
+<span class="sd"> :type dag_folder: str</span>
+<span class="sd"> :param executor: the executor to use when executing task instances</span>
+<span class="sd"> in this DagBag</span>
+<span class="sd"> :param include_examples: whether to include the examples that ship</span>
+<span class="sd"> with airflow or not</span>
+<span class="sd"> :type include_examples: bool</span>
+<span class="sd"> :param sync_to_db: whether to sync the properties of the DAGs to</span>
+<span class="sd"> the metadata DB while finding them, typically should be done</span>
+<span class="sd"> by the scheduler job only</span>
+<span class="sd"> :type sync_to_db: bool</span>
+<span class="sd"> """</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span>
+ <span class="bp">self</span><span class="p">,</span>
+ <span class="n">dag_folder</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span>
+ <span class="n">executor</span><span class="o">=</span><span class="n">DEFAULT_EXECUTOR</span><span class="p">,</span>
+ <span class="n">include_examples</span><span class="o">=</span><span class="n">configuration</span><span class="o">.</span><span class="n">getboolean</span><span class="p">(</span><span class="s1">'core'</span><span class="p">,</span> <span class="s1">'LOAD_EXAMPLES'</span><span class="p">),</span>
+ <span class="n">sync_to_db</span><span class="o">=</span><span class="bp">False</span><span class="p">):</span>
+
+ <span class="n">dag_folder</span> <span class="o">=</span> <span class="n">dag_folder</span> <span class="ow">or</span> <span class="n">DAGS_FOLDER</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Filling up the DagBag from {}"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">dag_folder</span><span class="p">))</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">dag_folder</span> <span class="o">=</span> <span class="n">dag_folder</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">dags</span> <span class="o">=</span> <span class="p">{}</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">sync_to_db</span> <span class="o">=</span> <span class="n">sync_to_db</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">file_last_changed</span> <span class="o">=</span> <span class="p">{}</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">executor</span> <span class="o">=</span> <span class="n">executor</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">import_errors</span> <span class="o">=</span> <span class="p">{}</span>
+ <span class="k">if</span> <span class="n">include_examples</span><span class="p">:</span>
+ <span class="n">example_dag_folder</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span>
+ <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">__file__</span><span class="p">),</span>
+ <span class="s1">'example_dags'</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">collect_dags</span><span class="p">(</span><span class="n">example_dag_folder</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">collect_dags</span><span class="p">(</span><span class="n">dag_folder</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">sync_to_db</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">deactivate_inactive_dags</span><span class="p">()</span>
+
+<div class="viewcode-block" id="DagBag.size"><a class="viewcode-back" href="../../code.html#airflow.models.DagBag.size">[docs]</a> <span class="k">def</span> <span class="nf">size</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> :return: the amount of dags contained in this dagbag</span>
+<span class="sd"> """</span>
+ <span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dags</span><span class="p">)</span></div>
+
+<div class="viewcode-block" id="DagBag.get_dag"><a class="viewcode-back" href="../../code.html#airflow.models.DagBag.get_dag">[docs]</a> <span class="k">def</span> <span class="nf">get_dag</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dag_id</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Gets the DAG out of the dictionary, and refreshes it if expired</span>
+<span class="sd"> """</span>
+ <span class="c1"># If asking for a known subdag, we want to refresh the parent</span>
+ <span class="n">root_dag_id</span> <span class="o">=</span> <span class="n">dag_id</span>
+ <span class="k">if</span> <span class="n">dag_id</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">dags</span><span class="p">:</span>
+ <span class="n">dag</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">dags</span><span class="p">[</span><span class="n">dag_id</span><span class="p">]</span>
+ <span class="k">if</span> <span class="n">dag</span><span class="o">.</span><span class="n">is_subdag</span><span class="p">:</span>
+ <span class="n">root_dag_id</span> <span class="o">=</span> <span class="n">dag</span><span class="o">.</span><span class="n">parent_dag</span><span class="o">.</span><span class="n">dag_id</span>
+
+ <span class="c1"># If the root_dag_id is absent or expired</span>
+ <span class="n">orm_dag</span> <span class="o">=</span> <span class="n">DagModel</span><span class="o">.</span><span class="n">get_current</span><span class="p">(</span><span class="n">root_dag_id</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">orm_dag</span> <span class="ow">and</span> <span class="p">(</span>
+ <span class="n">root_dag_id</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">dags</span> <span class="ow">or</span>
+ <span class="p">(</span>
+ <span class="n">orm_dag</span><span class="o">.</span><span class="n">last_expired</span> <span class="ow">and</span>
+ <span class="n">dag</span><span class="o">.</span><span class="n">last_loaded</span> <span class="o"><</span> <span class="n">orm_dag</span><span class="o">.</span><span class="n">last_expired</span>
+ <span class="p">)</span>
+ <span class="p">):</span>
+ <span class="c1"># Reprocessing source file</span>
+ <span class="n">found_dags</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">process_file</span><span class="p">(</span>
+ <span class="n">filepath</span><span class="o">=</span><span class="n">orm_dag</span><span class="o">.</span><span class="n">fileloc</span><span class="p">,</span> <span class="n">only_if_updated</span><span class="o">=</span><span class="bp">False</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="n">found_dags</span> <span class="ow">and</span> <span class="n">dag_id</span> <span class="ow">in</span> <span class="p">[</span><span class="n">dag</span><span class="o">.</span><span class="n">dag_id</span> <span class="k">for</span> <span class="n">dag</span> <span class="ow">in</span> <span class="n">found_dags</span><span class="p">]:</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">dags</span><span class="p">[</span><span class="n">dag_id</span><span class="p">]</span>
+ <span class="k">elif</span> <span class="n">dag_id</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">dags</span><span class="p">:</span>
+ <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">dags</span><span class="p">[</span><span class="n">dag_id</span><span class="p">]</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">dags</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">dag_id</span><span class="p">)</span></div>
+
+<div class="viewcode-block" id="DagBag.process_file"><a class="viewcode-back" href="../../code.html#airflow.models.DagBag.process_file">[docs]</a> <span class="k">def</span> <span class="nf">process_file</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">filepath</span><span class="p">,</span> <span class="n">only_if_updated</span><span class="o">=</span><span class="bp">True</span><span class="p">,</span> <span class="n">safe_mode</span><span class="o">=</span><span class="bp">True</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Given a path to a python module or zip file, this method imports</span>
+<span class="sd"> the module and look for dag objects within it.</span>
+<span class="sd"> """</span>
+ <span class="n">found_dags</span> <span class="o">=</span> <span class="p">[]</span>
+
+ <span class="c1"># todo: raise exception?</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isfile</span><span class="p">(</span><span class="n">filepath</span><span class="p">):</span>
+ <span class="k">return</span> <span class="n">found_dags</span>
+
+ <span class="k">try</span><span class="p">:</span>
+ <span class="c1"># This failed before in what may have been a git sync</span>
+ <span class="c1"># race condition</span>
+ <span class="n">dttm</span> <span class="o">=</span> <span class="n">datetime</span><span class="o">.</span><span class="n">fromtimestamp</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">getmtime</span><span class="p">(</span><span class="n">filepath</span><span class="p">))</span>
+ <span class="k">if</span> <span class="n">only_if_updated</span> \
+ <span class="ow">and</span> <span class="n">filepath</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">file_last_changed</span> \
+ <span class="ow">and</span> <span class="n">dttm</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">file_last_changed</span><span class="p">[</span><span class="n">filepath</span><span class="p">]:</span>
+ <span class="k">return</span> <span class="n">found_dags</span>
+
+ <span class="k">except</span> <span class="ne">Exception</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
+ <span class="k">return</span> <span class="n">found_dags</span>
+
+ <span class="n">mods</span> <span class="o">=</span> <span class="p">[]</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">zipfile</span><span class="o">.</span><span class="n">is_zipfile</span><span class="p">(</span><span class="n">filepath</span><span class="p">):</span>
+ <span class="k">if</span> <span class="n">safe_mode</span> <span class="ow">and</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isfile</span><span class="p">(</span><span class="n">filepath</span><span class="p">):</span>
+ <span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">filepath</span><span class="p">,</span> <span class="s1">'rb'</span><span class="p">)</span> <span class="k">as</span> <span class="n">f</span><span class="p">:</span>
+ <span class="n">content</span> <span class="o">=</span> <span class="n">f</span><span class="o">.</span><span class="n">read</span><span class="p">()</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="nb">all</span><span class="p">([</span><span class="n">s</span> <span class="ow">in</span> <span class="n">content</span> <span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="p">(</span><span class="n">b</span><span class="s1">'DAG'</span><span class="p">,</span> <span class="n">b</span><span class="s1">'airflow'</span><span class="p">)]):</span>
+ <span class="k">return</span> <span class="n">found_dags</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"Importing {}"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">filepath</span><span class="p">))</span>
+ <span class="n">org_mod_name</span><span class="p">,</span> <span class="n">file_ext</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">splitext</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="n">filepath</span><span class="p">)[</span><span class="o">-</span><span class="mi">1</span><span class="p">])</span>
+ <span class="n">mod_name</span> <span class="o">=</span> <span class="s1">'unusual_prefix_'</span> <span class="o">+</span> <span class="n">org_mod_name</span>
+
+ <span class="k">if</span> <span class="n">mod_name</span> <span class="ow">in</span> <span class="n">sys</span><span class="o">.</span><span class="n">modules</span><span class="p">:</span>
+ <span class="k">del</span> <span class="n">sys</span><span class="o">.</span><span class="n">modules</span><span class="p">[</span><span class="n">mod_name</span><span class="p">]</span>
+
+ <span class="k">with</span> <span class="n">timeout</span><span class="p">(</span><span class="n">configuration</span><span class="o">.</span><span class="n">getint</span><span class="p">(</span><span class="s1">'core'</span><span class="p">,</span> <span class="s2">"DAGBAG_IMPORT_TIMEOUT"</span><span class="p">)):</span>
+ <span class="k">try</span><span class="p">:</span>
+ <span class="n">m</span> <span class="o">=</span> <span class="n">imp</span><span class="o">.</span><span class="n">load_source</span><span class="p">(</span><span class="n">mod_name</span><span class="p">,</span> <span class="n">filepath</span><span class="p">)</span>
+ <span class="n">mods</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">m</span><span class="p">)</span>
+ <span class="k">except</span> <span class="ne">Exception</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="s2">"Failed to import: "</span> <span class="o">+</span> <span class="n">filepath</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">import_errors</span><span class="p">[</span><span class="n">filepath</span><span class="p">]</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">file_last_changed</span><span class="p">[</span><span class="n">filepath</span><span class="p">]</span> <span class="o">=</span> <span class="n">dttm</span>
+
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">zip_file</span> <span class="o">=</span> <span class="n">zipfile</span><span class="o">.</span><span class="n">ZipFile</span><span class="p">(</span><span class="n">filepath</span><span class="p">)</span>
+ <span class="k">for</span> <span class="n">mod</span> <span class="ow">in</span> <span class="n">zip_file</span><span class="o">.</span><span class="n">infolist</span><span class="p">():</span>
+ <span class="n">head</span><span class="p">,</span> <span class="n">tail</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="n">mod</span><span class="o">.</span><span class="n">filename</span><span class="p">)</span>
+ <span class="n">mod_name</span><span class="p">,</span> <span class="n">ext</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">splitext</span><span class="p">(</span><span class="n">mod</span><span class="o">.</span><span class="n">filename</span><span class="p">)</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">head</span> <span class="ow">and</span> <span class="p">(</span><span class="n">ext</span> <span class="o">==</span> <span class="s1">'.py'</span> <span class="ow">or</span> <span class="n">ext</span> <span class="o">==</span> <span class="s1">'.pyc'</span><span class="p">):</span>
+ <span class="k">if</span> <span class="n">mod_name</span> <span class="o">==</span> <span class="s1">'__init__'</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span><span class="s2">"Found __init__.{0} at root of {1}"</span><span class="o">.</span>
+ <span class="n">format</span><span class="p">(</span><span class="n">ext</span><span class="p">,</span> <span class="n">filepath</span><span class="p">))</span>
+
+ <span class="k">if</span> <span class="n">safe_mode</span><span class="p">:</span>
+ <span class="k">with</span> <span class="n">zip_file</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="n">mod</span><span class="o">.</span><span class="n">filename</span><span class="p">)</span> <span class="k">as</span> <span class="n">zf</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"Reading {} from {}"</span><span class="o">.</span>
+ <span class="n">format</span><span class="p">(</span><span class="n">mod</span><span class="o">.</span><span class="n">filename</span><span class="p">,</span> <span class="n">filepath</span><span class="p">))</span>
+ <span class="n">content</span> <span class="o">=</span> <span class="n">zf</span><span class="o">.</span><span class="n">read</span><span class="p">()</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="nb">all</span><span class="p">([</span><span class="n">s</span> <span class="ow">in</span> <span class="n">content</span> <span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="p">(</span><span class="n">b</span><span class="s1">'DAG'</span><span class="p">,</span> <span class="n">b</span><span class="s1">'airflow'</span><span class="p">)]):</span>
+ <span class="c1"># todo: create ignore list</span>
+ <span class="k">return</span> <span class="n">found_dags</span>
+
+ <span class="k">if</span> <span class="n">mod_name</span> <span class="ow">in</span> <span class="n">sys</span><span class="o">.</span><span class="n">modules</span><span class="p">:</span>
+ <span class="k">del</span> <span class="n">sys</span><span class="o">.</span><span class="n">modules</span><span class="p">[</span><span class="n">mod_name</span><span class="p">]</span>
+
+ <span class="k">try</span><span class="p">:</span>
+ <span class="n">sys</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">insert</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">filepath</span><span class="p">)</span>
+ <span class="n">m</span> <span class="o">=</span> <span class="n">importlib</span><span class="o">.</span><span class="n">import_module</span><span class="p">(</span><span class="n">mod_name</span><span class="p">)</span>
+ <span class="n">mods</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">m</span><span class="p">)</span>
+ <span class="k">except</span> <span class="ne">Exception</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="s2">"Failed to import: "</span> <span class="o">+</span> <span class="n">filepath</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">import_errors</span><span class="p">[</span><span class="n">filepath</span><span class="p">]</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">file_last_changed</span><span class="p">[</span><span class="n">filepath</span><span class="p">]</span> <span class="o">=</span> <span class="n">dttm</span>
+
+ <span class="k">for</span> <span class="n">m</span> <span class="ow">in</span> <span class="n">mods</span><span class="p">:</span>
+ <span class="k">for</span> <span class="n">dag</span> <span class="ow">in</span> <span class="nb">list</span><span class="p">(</span><span class="n">m</span><span class="o">.</span><span class="n">__dict__</span><span class="o">.</span><span class="n">values</span><span class="p">()):</span>
+ <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">dag</span><span class="p">,</span> <span class="n">DAG</span><span class="p">):</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">dag</span><span class="o">.</span><span class="n">full_filepath</span><span class="p">:</span>
+ <span class="n">dag</span><span class="o">.</span><span class="n">full_filepath</span> <span class="o">=</span> <span class="n">filepath</span>
+ <span class="n">dag</span><span class="o">.</span><span class="n">is_subdag</span> <span class="o">=</span> <span class="bp">False</span>
+ <span class="n">dag</span><span class="o">.</span><span class="n">module_name</span> <span class="o">=</span> <span class="n">m</span><span class="o">.</span><span class="n">__name__</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">bag_dag</span><span class="p">(</span><span class="n">dag</span><span class="p">,</span> <span class="n">parent_dag</span><span class="o">=</span><span class="n">dag</span><span class="p">,</span> <span class="n">root_dag</span><span class="o">=</span><span class="n">dag</span><span class="p">)</span>
+ <span class="n">found_dags</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">dag</span><span class="p">)</span>
+ <span class="n">found_dags</span> <span class="o">+=</span> <span class="n">dag</span><span class="o">.</span><span class="n">subdags</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">file_last_changed</span><span class="p">[</span><span class="n">filepath</span><span class="p">]</span> <span class="o">=</span> <span class="n">dttm</span>
+ <span class="k">return</span> <span class="n">found_dags</span></div>
+
+ <span class="nd">@provide_session</span>
+<div class="viewcode-block" id="DagBag.kill_zombies"><a class="viewcode-back" href="../../code.html#airflow.models.DagBag.kill_zombies">[docs]</a> <span class="k">def</span> <span class="nf">kill_zombies</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">session</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Fails tasks that haven't had a heartbeat in too long</span>
+<span class="sd"> """</span>
+ <span class="kn">from</span> <span class="nn">airflow.jobs</span> <span class="kn">import</span> <span class="n">LocalTaskJob</span> <span class="k">as</span> <span class="n">LJ</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Finding 'running' jobs without a recent heartbeat"</span><span class="p">)</span>
+ <span class="n">TI</span> <span class="o">=</span> <span class="n">TaskInstance</span>
+ <span class="n">secs</span> <span class="o">=</span> <span class="p">(</span>
+ <span class="n">configuration</span><span class="o">.</span><span class="n">getint</span><span class="p">(</span><span class="s1">'scheduler'</span><span class="p">,</span> <span class="s1">'job_heartbeat_sec'</span><span class="p">)</span> <span class="o">*</span> <span class="mi">3</span><span class="p">)</span> <span class="o">+</span> <span class="mi">120</span>
+ <span class="n">limit_dttm</span> <span class="o">=</span> <span class="n">datetime</span><span class="o">.</span><span class="n">now</span><span class="p">()</span> <span class="o">-</span> <span class="n">timedelta</span><span class="p">(</span><span class="n">seconds</span><span class="o">=</span><span class="n">secs</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span>
+ <span class="s2">"Failing jobs without heartbeat after {}"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">limit_dttm</span><span class="p">))</span>
+
+ <span class="n">tis</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">TI</span><span class="p">)</span>
+ <span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">LJ</span><span class="p">,</span> <span class="n">TI</span><span class="o">.</span><span class="n">job_id</span> <span class="o">==</span> <span class="n">LJ</span><span class="o">.</span><span class="n">id</span><span class="p">)</span>
+ <span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">TI</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">State</span><span class="o">.</span><span class="n">RUNNING</span><span class="p">)</span>
+ <span class="o">.</span><span class="n">filter</span><span class="p">(</span>
+ <span class="n">or_</span><span class="p">(</span>
+ <span class="n">LJ</span><span class="o">.</span><span class="n">state</span> <span class="o">!=</span> <span class="n">State</span><span class="o">.</span><span class="n">RUNNING</span><span class="p">,</span>
+ <span class="n">LJ</span><span class="o">.</span><span class="n">latest_heartbeat</span> <span class="o"><</span> <span class="n">limit_dttm</span><span class="p">,</span>
+ <span class="p">))</span>
+ <span class="o">.</span><span class="n">all</span><span class="p">()</span>
+ <span class="p">)</span>
+
+ <span class="k">for</span> <span class="n">ti</span> <span class="ow">in</span> <span class="n">tis</span><span class="p">:</span>
+ <span class="k">if</span> <span class="n">ti</span> <span class="ow">and</span> <span class="n">ti</span><span class="o">.</span><span class="n">dag_id</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">dags</span><span class="p">:</span>
+ <span class="n">dag</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">dags</span><span class="p">[</span><span class="n">ti</span><span class="o">.</span><span class="n">dag_id</span><span class="p">]</span>
+ <span class="k">if</span> <span class="n">ti</span><span class="o">.</span><span class="n">task_id</span> <span class="ow">in</span> <span class="n">dag</span><span class="o">.</span><span class="n">task_ids</span><span class="p">:</span>
+ <span class="n">task</span> <span class="o">=</span> <span class="n">dag</span><span class="o">.</span><span class="n">get_task</span><span class="p">(</span><span class="n">ti</span><span class="o">.</span><span class="n">task_id</span><span class="p">)</span>
+ <span class="n">ti</span><span class="o">.</span><span class="n">task</span> <span class="o">=</span> <span class="n">task</span>
+ <span class="n">ti</span><span class="o">.</span><span class="n">handle_failure</span><span class="p">(</span><span class="s2">"{} killed as zombie"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">ti</span><span class="p">))</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span>
+ <span class="s1">'Marked zombie job {} as failed'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">ti</span><span class="p">))</span>
+ <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span></div>
+
+<div class="viewcode-block" id="DagBag.bag_dag"><a class="viewcode-back" href="../../code.html#airflow.models.DagBag.bag_dag">[docs]</a> <span class="k">def</span> <span class="nf">bag_dag</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dag</span><span class="p">,</span> <span class="n">parent_dag</span><span class="p">,</span> <span class="n">root_dag</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Adds the DAG into the bag, recurses into sub dags.</span>
+<span class="sd"> """</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">dags</span><span class="p">[</span><span class="n">dag</span><span class="o">.</span><span class="n">dag_id</span><span class="p">]</span> <span class="o">=</span> <span class="n">dag</span>
+ <span class="n">dag</span><span class="o">.</span><span class="n">resolve_template_files</span><span class="p">()</span>
+ <span class="n">dag</span><span class="o">.</span><span class="n">last_loaded</span> <span class="o">=</span> <span class="n">datetime</span><span class="o">.</span><span class="n">now</span><span class="p">()</span>
+
+ <span class="k">for</span> <span class="n">task</span> <span class="ow">in</span> <span class="n">dag</span><span class="o">.</span><span class="n">tasks</span><span class="p">:</span>
+ <span class="n">settings</span><span class="o">.</span><span class="n">policy</span><span class="p">(</span><span class="n">task</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">sync_to_db</span><span class="p">:</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="n">orm_dag</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span>
+ <span class="n">DagModel</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">DagModel</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="n">dag</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span><span class="o">.</span><span class="n">first</span><span class="p">()</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">orm_dag</span><span class="p">:</span>
+ <span class="n">orm_dag</span> <span class="o">=</span> <span class="n">DagModel</span><span class="p">(</span><span class="n">dag_id</span><span class="o">=</span><span class="n">dag</span><span class="o">.</span><span class="n">dag_id</span><span class="p">)</span>
+ <span class="n">orm_dag</span><span class="o">.</span><span class="n">fileloc</span> <span class="o">=</span> <span class="n">root_dag</span><span class="o">.</span><span class="n">full_filepath</span>
+ <span class="n">orm_dag</span><span class="o">.</span><span class="n">is_subdag</span> <span class="o">=</span> <span class="n">dag</span><span class="o">.</span><span class="n">is_subdag</span>
+ <span class="n">orm_dag</span><span class="o">.</span><span class="n">owners</span> <span class="o">=</span> <span class="n">root_dag</span><span class="o">.</span><span class="n">owner</span>
+ <span class="n">orm_dag</span><span class="o">.</span><span class="n">is_active</span> <span class="o">=</span> <span class="bp">True</span>
+ <span class="n">session</span><span class="o">.</span><span class="n">merge</span><span class="p">(</span><span class="n">orm_dag</span><span class="p">)</span>
+ <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span>
+ <span class="n">session</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+
+ <span class="k">for</span> <span class="n">subdag</span> <span class="ow">in</span> <span class="n">dag</span><span class="o">.</span><span class="n">subdags</span><span class="p">:</span>
+ <span class="n">subdag</span><span class="o">.</span><span class="n">full_filepath</span> <span class="o">=</span> <span class="n">dag</span><span class="o">.</span><span class="n">full_filepath</span>
+ <span class="n">subdag</span><span class="o">.</span><span class="n">parent_dag</span> <span class="o">=</span> <span class="n">dag</span>
+ <span class="n">subdag</span><span class="o">.</span><span class="n">fileloc</span> <span class="o">=</span> <span class="n">root_dag</span><span class="o">.</span><span class="n">full_filepath</span>
+ <span class="n">subdag</span><span class="o">.</span><span class="n">is_subdag</span> <span class="o">=</span> <span class="bp">True</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">bag_dag</span><span class="p">(</span><span class="n">subdag</span><span class="p">,</span> <span class="n">parent_dag</span><span class="o">=</span><span class="n">dag</span><span class="p">,</span> <span class="n">root_dag</span><span class="o">=</span><span class="n">root_dag</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s1">'Loaded DAG {dag}'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="o">**</span><span class="nb">locals</span><span class="p">()))</span></div>
+
+<div class="viewcode-block" id="DagBag.collect_dags"><a class="viewcode-back" href="../../code.html#airflow.models.DagBag.collect_dags">[docs]</a> <span class="k">def</span> <span class="nf">collect_dags</span><span class="p">(</span>
+ <span class="bp">self</span><span class="p">,</span>
+ <span class="n">dag_folder</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span>
+ <span class="n">only_if_updated</span><span class="o">=</span><span class="bp">True</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Given a file path or a folder, this method looks for python modules,</span>
+<span class="sd"> imports them and adds them to the dagbag collection.</span>
+
+<span class="sd"> Note that if a .airflowignore file is found while processing,</span>
+<span class="sd"> the directory, it will behaves much like a .gitignore does,</span>
+<span class="sd"> ignoring files that match any of the regex patterns specified</span>
+<span class="sd"> in the file.</span>
+<span class="sd"> """</span>
+ <span class="n">start_dttm</span> <span class="o">=</span> <span class="n">datetime</span><span class="o">.</span><span class="n">now</span><span class="p">()</span>
+ <span class="n">dag_folder</span> <span class="o">=</span> <span class="n">dag_folder</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_folder</span>
+
+ <span class="c1"># Used to store stats around DagBag processing</span>
+ <span class="n">stats</span> <span class="o">=</span> <span class="p">[]</span>
+ <span class="n">FileLoadStat</span> <span class="o">=</span> <span class="n">namedtuple</span><span class="p">(</span>
+ <span class="s1">'FileLoadStat'</span><span class="p">,</span> <span class="s2">"file duration dag_num task_num dags"</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isfile</span><span class="p">(</span><span class="n">dag_folder</span><span class="p">):</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">process_file</span><span class="p">(</span><span class="n">dag_folder</span><span class="p">,</span> <span class="n">only_if_updated</span><span class="o">=</span><span class="n">only_if_updated</span><span class="p">)</span>
+ <span class="k">elif</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isdir</span><span class="p">(</span><span class="n">dag_folder</span><span class="p">):</span>
+ <span class="n">patterns</span> <span class="o">=</span> <span class="p">[]</span>
+ <span class="k">for</span> <span class="n">root</span><span class="p">,</span> <span class="n">dirs</span><span class="p">,</span> <span class="n">files</span> <span class="ow">in</span> <span class="n">os</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">dag_folder</span><span class="p">,</span> <span class="n">followlinks</span><span class="o">=</span><span class="bp">True</span><span class="p">):</span>
+ <span class="n">ignore_file</span> <span class="o">=</span> <span class="p">[</span><span class="n">f</span> <span class="k">for</span> <span class="n">f</span> <span class="ow">in</span> <span class="n">files</span> <span class="k">if</span> <span class="n">f</span> <span class="o">==</span> <span class="s1">'.airflowignore'</span><span class="p">]</span>
+ <span class="k">if</span> <span class="n">ignore_file</span><span class="p">:</span>
+ <span class="n">f</span> <span class="o">=</span> <span class="nb">open</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">root</span><span class="p">,</span> <span class="n">ignore_file</span><span class="p">[</span><span class="mi">0</span><span class="p">]),</span> <span class="s1">'r'</span><span class="p">)</span>
+ <span class="n">patterns</span> <span class="o">+=</span> <span class="p">[</span><span class="n">p</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">f</span><span class="o">.</span><span class="n">read</span><span class="p">()</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">'</span><span class="se">\n</span><span class="s1">'</span><span class="p">)</span> <span class="k">if</span> <span class="n">p</span><span class="p">]</span>
+ <span class="n">f</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="k">for</span> <span class="n">f</span> <span class="ow">in</span> <span class="n">files</span><span class="p">:</span>
+ <span class="k">try</span><span class="p">:</span>
+ <span class="n">filepath</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">root</span><span class="p">,</span> <span class="n">f</span><span class="p">)</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isfile</span><span class="p">(</span><span class="n">filepath</span><span class="p">):</span>
+ <span class="k">continue</span>
+ <span class="n">mod_name</span><span class="p">,</span> <span class="n">file_ext</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">splitext</span><span class="p">(</span>
+ <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="n">filepath</span><span class="p">)[</span><span class="o">-</span><span class="mi">1</span><span class="p">])</span>
+ <span class="k">if</span> <span class="n">file_ext</span> <span class="o">!=</span> <span class="s1">'.py'</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">zipfile</span><span class="o">.</span><span class="n">is_zipfile</span><span class="p">(</span><span class="n">filepath</span><span class="p">):</span>
+ <span class="k">continue</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="nb">any</span><span class="p">(</span>
+ <span class="p">[</span><span class="n">re</span><span class="o">.</span><span class="n">findall</span><span class="p">(</span><span class="n">p</span><span class="p">,</span> <span class="n">filepath</span><span class="p">)</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">patterns</span><span class="p">]):</span>
+ <span class="n">ts</span> <span class="o">=</span> <span class="n">datetime</span><span class="o">.</span><span class="n">now</span><span class="p">()</span>
+ <span class="n">found_dags</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">process_file</span><span class="p">(</span>
+ <span class="n">filepath</span><span class="p">,</span> <span class="n">only_if_updated</span><span class="o">=</span><span class="n">only_if_updated</span><span class="p">)</span>
+
+ <span class="n">td</span> <span class="o">=</span> <span class="n">datetime</span><span class="o">.</span><span class="n">now</span><span class="p">()</span> <span class="o">-</span> <span class="n">ts</span>
+ <span class="n">td</span> <span class="o">=</span> <span class="n">td</span><span class="o">.</span><span class="n">total_seconds</span><span class="p">()</span> <span class="o">+</span> <span class="p">(</span>
+ <span class="nb">float</span><span class="p">(</span><span class="n">td</span><span class="o">.</span><span class="n">microseconds</span><span class="p">)</span> <span class="o">/</span> <span class="mi">1000000</span><span class="p">)</span>
+ <span class="n">stats</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">FileLoadStat</span><span class="p">(</span>
+ <span class="n">filepath</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">dag_folder</span><span class="p">,</span> <span class="s1">''</span><span class="p">),</span>
+ <span class="n">td</span><span class="p">,</span>
+ <span class="nb">len</span><span class="p">(</span><span class="n">found_dags</span><span class="p">),</span>
+ <span class="nb">sum</span><span class="p">([</span><span class="nb">len</span><span class="p">(</span><span class="n">dag</span><span class="o">.</span><span class="n">tasks</span><span class="p">)</span> <span class="k">for</span> <span class="n">dag</span> <span class="ow">in</span> <span class="n">found_dags</span><span class="p">]),</span>
+ <span class="nb">str</span><span class="p">([</span><span class="n">dag</span><span class="o">.</span><span class="n">dag_id</span> <span class="k">for</span> <span class="n">dag</span> <span class="ow">in</span> <span class="n">found_dags</span><span class="p">]),</span>
+ <span class="p">))</span>
+ <span class="k">except</span> <span class="ne">Exception</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
+ <span class="n">Stats</span><span class="o">.</span><span class="n">gauge</span><span class="p">(</span>
+ <span class="s1">'collect_dags'</span><span class="p">,</span> <span class="p">(</span><span class="n">datetime</span><span class="o">.</span><span class="n">now</span><span class="p">()</span> <span class="o">-</span> <span class="n">start_dttm</span><span class="p">)</span><span class="o">.</span><span class="n">total_seconds</span><span class="p">(),</span> <span class="mi">1</span><span class="p">)</span>
+ <span class="n">Stats</span><span class="o">.</span><span class="n">gauge</span><span class="p">(</span>
+ <span class="s1">'dagbag_size'</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dags</span><span class="p">),</span> <span class="mi">1</span><span class="p">)</span>
+ <span class="n">Stats</span><span class="o">.</span><span class="n">gauge</span><span class="p">(</span>
+ <span class="s1">'dagbag_import_errors'</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">import_errors</span><span class="p">),</span> <span class="mi">1</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">dagbag_stats</span> <span class="o">=</span> <span class="nb">sorted</span><span class="p">(</span>
+ <span class="n">stats</span><span class="p">,</span> <span class="n">key</span><span class="o">=</span><span class="k">lambda</span> <span class="n">x</span><span class="p">:</span> <span class="n">x</span><span class="o">.</span><span class="n">duration</span><span class="p">,</span> <span class="n">reverse</span><span class="o">=</span><span class="bp">True</span><span class="p">)</span></div>
+
+<div class="viewcode-block" id="DagBag.dagbag_report"><a class="viewcode-back" href="../../code.html#airflow.models.DagBag.dagbag_report">[docs]</a> <span class="k">def</span> <span class="nf">dagbag_report</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="sd">"""Prints a report around DagBag loading stats"""</span>
+ <span class="n">report</span> <span class="o">=</span> <span class="n">textwrap</span><span class="o">.</span><span class="n">dedent</span><span class="p">(</span><span class="s2">"""</span><span class="se">\n</span><span class="s2"></span>
+<span class="s2"> -------------------------------------------------------------------</span>
+<span class="s2"> DagBag loading stats for {dag_folder}</span>
+<span class="s2"> -------------------------------------------------------------------</span>
+<span class="s2"> Number of DAGs: {dag_num}</span>
+<span class="s2"> Total task number: {task_num}</span>
+<span class="s2"> DagBag parsing time: {duration}</span>
+<span class="s2"> {table}</span>
+<span class="s2"> """</span><span class="p">)</span>
+ <span class="n">stats</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">dagbag_stats</span>
+ <span class="k">return</span> <span class="n">report</span><span class="o">.</span><span class="n">format</span><span class="p">(</span>
+ <span class="n">dag_folder</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">dag_folder</span><span class="p">,</span>
+ <span class="n">duration</span><span class="o">=</span><span class="nb">sum</span><span class="p">([</span><span class="n">o</span><span class="o">.</span><span class="n">duration</span> <span class="k">for</span> <span class="n">o</span> <span class="ow">in</span> <span class="n">stats</span><span class="p">]),</span>
+ <span class="n">dag_num</span><span class="o">=</span><span class="nb">sum</span><span class="p">([</span><span class="n">o</span><span class="o">.</span><span class="n">dag_num</span> <span class="k">for</span> <span class="n">o</span> <span class="ow">in</span> <span class="n">stats</span><span class="p">]),</span>
+ <span class="n">task_num</span><span class="o">=</span><span class="nb">sum</span><span class="p">([</span><span class="n">o</span><span class="o">.</span><span class="n">dag_num</span> <span class="k">for</span> <span class="n">o</span> <span class="ow">in</span> <span class="n">stats</span><span class="p">]),</span>
+ <span class="n">table</span><span class="o">=</span><span class="n">pprinttable</span><span class="p">(</span><span class="n">stats</span><span class="p">),</span>
+ <span class="p">)</span></div>
+
+ <span class="k">def</span> <span class="nf">deactivate_inactive_dags</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="n">active_dag_ids</span> <span class="o">=</span> <span class="p">[</span><span class="n">dag</span><span class="o">.</span><span class="n">dag_id</span> <span class="k">for</span> <span class="n">dag</span> <span class="ow">in</span> <span class="nb">list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dags</span><span class="o">.</span><span class="n">values</span><span class="p">())]</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="k">for</span> <span class="n">dag</span> <span class="ow">in</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span>
+ <span class="n">DagModel</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="o">~</span><span class="n">DagModel</span><span class="o">.</span><span class="n">dag_id</span><span class="o">.</span><span class="n">in_</span><span class="p">(</span><span class="n">active_dag_ids</span><span class="p">))</span><span class="o">.</span><span class="n">all</span><span class="p">():</span>
+ <span class="n">dag</span><span class="o">.</span><span class="n">is_active</span> <span class="o">=</span> <span class="bp">False</span>
+ <span class="n">session</span><span class="o">.</span><span class="n">merge</span><span class="p">(</span><span class="n">dag</span><span class="p">)</span>
+ <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span>
+ <span class="n">session</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+
+ <span class="k">def</span> <span class="nf">paused_dags</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="n">session</span> <span class="o">=</span> <span class="n">settings</span><span class="o">.</span><span class="n">Session</span><span class="p">()</span>
+ <span class="n">dag_ids</span> <span class="o">=</span> <span class="p">[</span><span class="n">dp</span><span class="o">.</span><span class="n">dag_id</span> <span class="k">for</span> <span class="n">dp</span> <span class="ow">in</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">DagModel</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span>
+ <span class="n">DagModel</span><span class="o">.</span><span class="n">is_paused</span> <span class="o">==</span> <span class="bp">True</span><span class="p">)]</span>
+ <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span>
+ <span class="n">session</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="k">return</span> <span class="n">dag_ids</span></div>
+
+
+<span class="k">class</span> <span class="nc">User</span><span class="p">(</span><span class="n">Base</span><span class="p">):</span>
+ <span class="n">__tablename__</span> <span class="o">=</span> <span class="s2">"users"</span>
+
+ <span class="nb">id</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">Integer</span><span class="p">,</span> <span class="n">primary_key</span><span class="o">=</span><span class="bp">True</span><span class="p">)</span>
+ <span class="n">username</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="n">ID_LEN</span><span class="p">),</span> <span class="n">unique</span><span class="o">=</span><span class="bp">True</span><span class="p">)</span>
+ <span class="n">email</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="mi">500</span><span class="p">))</span>
+ <span class="n">superuser</span> <span class="o">=</span> <span class="bp">False</span>
+
+ <span class="k">def</span> <span class="nf">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">username</span>
+
+ <span class="k">def</span> <span class="nf">get_id</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">return</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="p">)</span>
+
+ <span class="k">def</span> <span class="nf">is_superuser</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">superuser</span>
+
+
+<div class="viewcode-block" id="Connection"><a class="viewcode-back" href="../../code.html#airflow.models.Connection">[docs]</a><span class="k">class</span> <span class="nc">Connection</span><span class="p">(</span><span class="n">Base</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Placeholder to store information about different database instances</span>
+<span class="sd"> connection information. The idea here is that scripts use references to</span>
+<span class="sd"> database instances (conn_id) instead of hard coding hostname, logins and</span>
+<span class="sd"> passwords when using operators or hooks.</span>
+<span class="sd"> """</span>
+ <span class="n">__tablename__</span> <span class="o">=</span> <span class="s2">"connection"</span>
+
+ <span class="nb">id</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">Integer</span><span class="p">(),</span> <span class="n">primary_key</span><span class="o">=</span><span class="bp">True</span><span class="p">)</span>
+ <span class="n">conn_id</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="n">ID_LEN</span><span class="p">))</span>
+ <span class="n">conn_type</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="mi">500</span><span class="p">))</span>
+ <span class="n">host</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="mi">500</span><span class="p">))</span>
+ <span class="n">schema</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="mi">500</span><span class="p">))</span>
+ <span class="n">login</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">String</span><span class="p">(</span><span class="mi">500</span><span class="p">))</span>
+ <span class="n">_password</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="s1">'password'</span><span class="p">,</span> <span class="n">String</span><span class="p">(</span><span class="mi">5000</span><span class="p">))</span>
+ <span class="n">port</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">Integer</span><span class="p">())</span>
+ <span class="n">is_encrypted</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">Boolean</span><span class="p">,</span> <span class="n">unique</span><span class="o">=</span><span class="bp">False</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="bp">False</span><span class="p">)</span>
+ <span class="n">is_extra_encrypted</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="n">Boolean</span><span class="p">,</span> <span class="n">unique</span><span class="o">=</span><span class="bp">False</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="bp">False</span><span class="p">)</span>
+ <span class="n">_extra</span> <span class="o">=</span> <span class="n">Column</span><span class="p">(</span><span class="s1">'extra'</span><span class="p">,</span> <span class="n">String</span><span class="p">(</span><span class="mi">5000</span><span class="p">))</span>
+
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span>
+ <span class="bp">self</span><span class="p">,</span> <span class="n">conn_id</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">conn_type</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span>
+ <span class="n">host</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">login</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">password</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span>
+ <span class="n">schema</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">port</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">extra</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span>
+ <span class="n">uri</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">conn_id</span> <span class="o">=</span> <span class="n">conn_id</span>
+ <span class="k">if</span> <span class="n">uri</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">parse_from_uri</span><span class="p">(</span><span class="n">uri</span><span class="p">)</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">conn_type</span> <span class="o">=</span> <span class="n">conn_type</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">host</span> <span class="o">=</span> <span class="n">host</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">login</span> <span class="o">=</span> <span class="n">login</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">password</span> <span class="o">=</span> <span class="n">password</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">port</span> <span class="o">=</span> <span class="n">port</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">extra</span> <span class="o">=</span> <span class="n">extra</span>
+
+ <span class="k">def</span> <span class="nf">parse_from_uri</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">uri</span><span class="p">):</span>
+ <span class="n">temp_uri</span> <span class="o">=</span> <span class="n">urlparse</span><span class="p">(</span><span class="n">uri</span><span class="p">)</span>
+ <span class="n">hostname</span> <span class="o">=</span> <span class="n">temp_uri</span><span class="o">.</span><span class="n">hostname</span> <span class="ow">or</span> <span class="s1">''</span>
+ <span class="k">if</span> <span class="s1">'</span><span class="si">%2f</span><span class="s1">'</span> <span class="ow">in</span> <span class="n">hostname</span><span class="p">:</span>
+ <span class="n">hostname</span> <span class="o">=</span> <span class="n">hostname</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s1">'</span><span class="si">%2f</span><span class="s1">'</span><span class="p">,</span> <span class="s1">'/'</span><span class="p">)</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s1">'</span><span class="si">%2F</span><span class="s1">'</span><span class="p">,</span> <span class="s1">'/'</span><span class="p">)</span>
+ <span class="n">conn_type</span> <span class="o">=</span> <span class="n">temp_uri</span><span class="o">.</span><span class="n">scheme</span>
+ <span class="k">if</span> <span class="n">conn_type</span> <span class="o">==</span> <span class="s1">'postgresql'</span><span class="p">:</span>
+ <span class="n">conn_type</span> <span class="o">=</span> <span class="s1">'postgres'</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">conn_type</span> <span class="o">=</span> <span class="n">conn_type</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">host</span> <span class="o">=</span> <span class="n">hostname</spa
<TRUNCATED>