| |
| |
| <!DOCTYPE html> |
| <!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]--> |
| <!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]--> |
| <head> |
| <meta charset="utf-8"> |
| |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> |
| |
| <title>airflow.contrib.operators.datastore_export_operator — Airflow Documentation</title> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <link rel="stylesheet" href="../../../../_static/css/theme.css" type="text/css" /> |
| <link rel="stylesheet" href="../../../../_static/pygments.css" type="text/css" /> |
| <link rel="index" title="Index" href="../../../../genindex.html" /> |
| <link rel="search" title="Search" href="../../../../search.html" /> |
| |
| |
| <script src="../../../../_static/js/modernizr.min.js"></script> |
| |
| </head> |
| |
| <body class="wy-body-for-nav"> |
| |
| |
| <div class="wy-grid-for-nav"> |
| |
| |
| <nav data-toggle="wy-nav-shift" class="wy-nav-side"> |
| <div class="wy-side-scroll"> |
| <div class="wy-side-nav-search"> |
| |
| |
| |
| <a href="../../../../index.html" class="icon icon-home"> Airflow |
| |
| |
| |
| </a> |
| |
| |
| |
| |
| |
| |
| |
| <div role="search"> |
| <form id="rtd-search-form" class="wy-form" action="../../../../search.html" method="get"> |
| <input type="text" name="q" placeholder="Search docs" /> |
| <input type="hidden" name="check_keywords" value="yes" /> |
| <input type="hidden" name="area" value="default" /> |
| </form> |
| </div> |
| |
| |
| </div> |
| |
| <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation"> |
| |
| |
| |
| |
| |
| |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../project.html">Project</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../license.html">License</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../start.html">Quick Start</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../installation.html">Installation</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../tutorial.html">Tutorial</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../howto/index.html">How-to Guides</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../ui.html">UI / Screenshots</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../concepts.html">Concepts</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../profiling.html">Data Profiling</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../cli.html">Command Line Interface</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../scheduler.html">Scheduling & Triggers</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../plugins.html">Plugins</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../security.html">Security</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../timezone.html">Time zones</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../api.html">Experimental Rest API</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../integration.html">Integration</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../lineage.html">Lineage</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../faq.html">FAQ</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../code.html">API Reference</a></li> |
| </ul> |
| |
| |
| |
| </div> |
| </div> |
| </nav> |
| |
| <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> |
| |
| |
| <nav class="wy-nav-top" aria-label="top navigation"> |
| |
| <i data-toggle="wy-nav-top" class="fa fa-bars"></i> |
| <a href="../../../../index.html">Airflow</a> |
| |
| </nav> |
| |
| |
| <div class="wy-nav-content"> |
| |
| <div class="rst-content"> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <div role="navigation" aria-label="breadcrumbs navigation"> |
| |
| <ul class="wy-breadcrumbs"> |
| |
| <li><a href="../../../../index.html">Docs</a> »</li> |
| |
| <li><a href="../../../index.html">Module code</a> »</li> |
| |
| <li>airflow.contrib.operators.datastore_export_operator</li> |
| |
| |
| <li class="wy-breadcrumbs-aside"> |
| |
| </li> |
| |
| </ul> |
| |
| |
| <hr/> |
| </div> |
| <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> |
| <div itemprop="articleBody"> |
| |
| <h1>Source code for airflow.contrib.operators.datastore_export_operator</h1><div class="highlight"><pre> |
| <span></span><span class="c1"># -*- coding: utf-8 -*-</span> |
| <span class="c1">#</span> |
| <span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="c1"># or more contributor license agreements. See the NOTICE file</span> |
| <span class="c1"># distributed with this work for additional information</span> |
| <span class="c1"># regarding copyright ownership. The ASF licenses this file</span> |
| <span class="c1"># to you under the Apache License, Version 2.0 (the</span> |
| <span class="c1"># "License"); you may not use this file except in compliance</span> |
| <span class="c1"># with the License. You may obtain a copy of the License at</span> |
| <span class="c1">#</span> |
| <span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="c1">#</span> |
| <span class="c1"># Unless required by applicable law or agreed to in writing,</span> |
| <span class="c1"># software distributed under the License is distributed on an</span> |
| <span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span> |
| <span class="c1"># KIND, either express or implied. See the License for the</span> |
| <span class="c1"># specific language governing permissions and limitations</span> |
| <span class="c1"># under the License.</span> |
| <span class="c1">#</span> |
| <span class="kn">from</span> <span class="nn">airflow.contrib.hooks.datastore_hook</span> <span class="k">import</span> <span class="n">DatastoreHook</span> |
| <span class="kn">from</span> <span class="nn">airflow.contrib.hooks.gcs_hook</span> <span class="k">import</span> <span class="n">GoogleCloudStorageHook</span> |
| <span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="k">import</span> <span class="n">AirflowException</span> |
| <span class="kn">from</span> <span class="nn">airflow.models</span> <span class="k">import</span> <span class="n">BaseOperator</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="k">import</span> <span class="n">apply_defaults</span> |
| |
| |
| <div class="viewcode-block" id="DatastoreExportOperator"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.operators.datastore_export_operator.DatastoreExportOperator">[docs]</a><span class="k">class</span> <span class="nc">DatastoreExportOperator</span><span class="p">(</span><span class="n">BaseOperator</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Export entities from Google Cloud Datastore to Cloud Storage</span> |
| |
| <span class="sd"> :param bucket: name of the cloud storage bucket to backup data</span> |
| <span class="sd"> :type bucket: string</span> |
| <span class="sd"> :param namespace: optional namespace path in the specified Cloud Storage bucket</span> |
| <span class="sd"> to backup data. If this namespace does not exist in GCS, it will be created.</span> |
| <span class="sd"> :type namespace: str</span> |
| <span class="sd"> :param datastore_conn_id: the name of the Datastore connection id to use</span> |
| <span class="sd"> :type datastore_conn_id: string</span> |
| <span class="sd"> :param cloud_storage_conn_id: the name of the cloud storage connection id to</span> |
| <span class="sd"> force-write backup</span> |
| <span class="sd"> :type cloud_storage_conn_id: string</span> |
| <span class="sd"> :param delegate_to: The account to impersonate, if any.</span> |
| <span class="sd"> For this to work, the service account making the request must have domain-wide</span> |
| <span class="sd"> delegation enabled.</span> |
| <span class="sd"> :type delegate_to: string</span> |
| <span class="sd"> :param entity_filter: description of what data from the project is included in the</span> |
| <span class="sd"> export, refer to</span> |
| <span class="sd"> https://cloud.google.com/datastore/docs/reference/rest/Shared.Types/EntityFilter</span> |
| <span class="sd"> :type entity_filter: dict</span> |
| <span class="sd"> :param labels: client-assigned labels for cloud storage</span> |
| <span class="sd"> :type labels: dict</span> |
| <span class="sd"> :param polling_interval_in_seconds: number of seconds to wait before polling for</span> |
| <span class="sd"> execution status again</span> |
| <span class="sd"> :type polling_interval_in_seconds: int</span> |
| <span class="sd"> :param overwrite_existing: if the storage bucket + namespace is not empty, it will be</span> |
| <span class="sd"> emptied prior to exports. This enables overwriting existing backups.</span> |
| <span class="sd"> :type overwrite_existing: bool</span> |
| <span class="sd"> :param xcom_push: push operation name to xcom for reference</span> |
| <span class="sd"> :type xcom_push: bool</span> |
| <span class="sd"> """</span> |
| |
| <span class="nd">@apply_defaults</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">bucket</span><span class="p">,</span> |
| <span class="n">namespace</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">datastore_conn_id</span><span class="o">=</span><span class="s1">'google_cloud_default'</span><span class="p">,</span> |
| <span class="n">cloud_storage_conn_id</span><span class="o">=</span><span class="s1">'google_cloud_default'</span><span class="p">,</span> |
| <span class="n">delegate_to</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">entity_filter</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">labels</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">polling_interval_in_seconds</span><span class="o">=</span><span class="mi">10</span><span class="p">,</span> |
| <span class="n">overwrite_existing</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">xcom_push</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="o">*</span><span class="n">args</span><span class="p">,</span> |
| <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> |
| <span class="nb">super</span><span class="p">(</span><span class="n">DatastoreExportOperator</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</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">datastore_conn_id</span> <span class="o">=</span> <span class="n">datastore_conn_id</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">cloud_storage_conn_id</span> <span class="o">=</span> <span class="n">cloud_storage_conn_id</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">delegate_to</span> <span class="o">=</span> <span class="n">delegate_to</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">bucket</span> <span class="o">=</span> <span class="n">bucket</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">namespace</span> <span class="o">=</span> <span class="n">namespace</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">entity_filter</span> <span class="o">=</span> <span class="n">entity_filter</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">labels</span> <span class="o">=</span> <span class="n">labels</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">polling_interval_in_seconds</span> <span class="o">=</span> <span class="n">polling_interval_in_seconds</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">overwrite_existing</span> <span class="o">=</span> <span class="n">overwrite_existing</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">xcom_push</span> <span class="o">=</span> <span class="n">xcom_push</span> |
| |
| <div class="viewcode-block" id="DatastoreExportOperator.execute"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.operators.datastore_export_operator.DatastoreExportOperator.execute">[docs]</a> <span class="k">def</span> <span class="nf">execute</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="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Exporting data to Cloud Storage bucket '</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">bucket</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">overwrite_existing</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">namespace</span><span class="p">:</span> |
| <span class="n">gcs_hook</span> <span class="o">=</span> <span class="n">GoogleCloudStorageHook</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cloud_storage_conn_id</span><span class="p">)</span> |
| <span class="n">objects</span> <span class="o">=</span> <span class="n">gcs_hook</span><span class="o">.</span><span class="n">list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">bucket</span><span class="p">,</span> <span class="n">prefix</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">namespace</span><span class="p">)</span> |
| <span class="k">for</span> <span class="n">o</span> <span class="ow">in</span> <span class="n">objects</span><span class="p">:</span> |
| <span class="n">gcs_hook</span><span class="o">.</span><span class="n">delete</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">bucket</span><span class="p">,</span> <span class="n">o</span><span class="p">)</span> |
| |
| <span class="n">ds_hook</span> <span class="o">=</span> <span class="n">DatastoreHook</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">datastore_conn_id</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">delegate_to</span><span class="p">)</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="n">ds_hook</span><span class="o">.</span><span class="n">export_to_storage_bucket</span><span class="p">(</span><span class="n">bucket</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">bucket</span><span class="p">,</span> |
| <span class="n">namespace</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">namespace</span><span class="p">,</span> |
| <span class="n">entity_filter</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">entity_filter</span><span class="p">,</span> |
| <span class="n">labels</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">labels</span><span class="p">)</span> |
| <span class="n">operation_name</span> <span class="o">=</span> <span class="n">result</span><span class="p">[</span><span class="s1">'name'</span><span class="p">]</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="n">ds_hook</span><span class="o">.</span><span class="n">poll_operation_until_done</span><span class="p">(</span><span class="n">operation_name</span><span class="p">,</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">polling_interval_in_seconds</span><span class="p">)</span> |
| |
| <span class="n">state</span> <span class="o">=</span> <span class="n">result</span><span class="p">[</span><span class="s1">'metadata'</span><span class="p">][</span><span class="s1">'common'</span><span class="p">][</span><span class="s1">'state'</span><span class="p">]</span> |
| <span class="k">if</span> <span class="n">state</span> <span class="o">!=</span> <span class="s1">'SUCCESSFUL'</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s1">'Operation failed: result=</span><span class="si">{}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">result</span><span class="p">))</span> |
| |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">xcom_push</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">result</span></div></div> |
| </pre></div> |
| |
| </div> |
| |
| </div> |
| <footer> |
| |
| |
| <hr/> |
| |
| <div role="contentinfo"> |
| <p> |
| |
| </p> |
| </div> |
| Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/rtfd/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. |
| |
| </footer> |
| |
| </div> |
| </div> |
| |
| </section> |
| |
| </div> |
| |
| |
| |
| |
| |
| |
| |
| <script type="text/javascript" id="documentation_options" data-url_root="../../../../" src="../../../../_static/documentation_options.js"></script> |
| <script type="text/javascript" src="../../../../_static/jquery.js"></script> |
| <script type="text/javascript" src="../../../../_static/underscore.js"></script> |
| <script type="text/javascript" src="../../../../_static/doctools.js"></script> |
| |
| |
| |
| |
| <script type="text/javascript" src="../../../../_static/js/theme.js"></script> |
| |
| <script type="text/javascript"> |
| jQuery(function () { |
| SphinxRtdTheme.Navigation.enable(true); |
| }); |
| </script> |
| |
| </body> |
| </html> |