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<h1>Source code for airflow.contrib.operators.gcs_to_gcs</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"># &quot;License&quot;); 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"># &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
<span class="c1"># KIND, either express or implied. See the License for the</span>
<span class="c1"># specific language governing permissions and limitations</span>
<span class="c1"># under the License.</span>
<span class="kn">from</span> <span class="nn">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.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>
<span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="k">import</span> <span class="n">AirflowException</span>
<div class="viewcode-block" id="WILDCARD"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/gcs_to_gcs/index.html#airflow.contrib.operators.gcs_to_gcs.WILDCARD">[docs]</a><span class="n">WILDCARD</span> <span class="o">=</span> <span class="s1">&#39;*&#39;</span></div>
<div class="viewcode-block" id="GoogleCloudStorageToGoogleCloudStorageOperator"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/gcs_to_gcs/index.html#airflow.contrib.operators.gcs_to_gcs.GoogleCloudStorageToGoogleCloudStorageOperator">[docs]</a><span class="k">class</span> <span class="nc">GoogleCloudStorageToGoogleCloudStorageOperator</span><span class="p">(</span><span class="n">BaseOperator</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Copies objects from a bucket to another, with renaming if requested.</span>
<span class="sd"> :param source_bucket: The source Google cloud storage bucket where the</span>
<span class="sd"> object is. (templated)</span>
<span class="sd"> :type source_bucket: str</span>
<span class="sd"> :param source_object: The source name of the object to copy in the Google cloud</span>
<span class="sd"> storage bucket. (templated)</span>
<span class="sd"> You can use only one wildcard for objects (filenames) within your</span>
<span class="sd"> bucket. The wildcard can appear inside the object name or at the</span>
<span class="sd"> end of the object name. Appending a wildcard to the bucket name is</span>
<span class="sd"> unsupported.</span>
<span class="sd"> :type source_object: str</span>
<span class="sd"> :param destination_bucket: The destination Google cloud storage bucket</span>
<span class="sd"> where the object should be. If the destination_bucket is None, it defaults</span>
<span class="sd"> to source_bucket. (templated)</span>
<span class="sd"> :type destination_bucket: str</span>
<span class="sd"> :param destination_object: The destination name of the object in the</span>
<span class="sd"> destination Google cloud storage bucket. (templated)</span>
<span class="sd"> If a wildcard is supplied in the source_object argument, this is the</span>
<span class="sd"> prefix that will be prepended to the final destination objects&#39; paths.</span>
<span class="sd"> Note that the source path&#39;s part before the wildcard will be removed;</span>
<span class="sd"> if it needs to be retained it should be appended to destination_object.</span>
<span class="sd"> For example, with prefix ``foo/*`` and destination_object ``blah/``, the</span>
<span class="sd"> file ``foo/baz`` will be copied to ``blah/baz``; to retain the prefix write</span>
<span class="sd"> the destination_object as e.g. ``blah/foo``, in which case the copied file</span>
<span class="sd"> will be named ``blah/foo/baz``.</span>
<span class="sd"> :type destination_object: str</span>
<span class="sd"> :param move_object: When move object is True, the object is moved instead</span>
<span class="sd"> of copied to the new location. This is the equivalent of a mv command</span>
<span class="sd"> as opposed to a cp command.</span>
<span class="sd"> :type move_object: bool</span>
<span class="sd"> :param google_cloud_storage_conn_id: The connection ID to use when</span>
<span class="sd"> connecting to Google cloud storage.</span>
<span class="sd"> :type google_cloud_storage_conn_id: str</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</span>
<span class="sd"> domain-wide delegation enabled.</span>
<span class="sd"> :type delegate_to: str</span>
<span class="sd"> :param last_modified_time: When specified, the objects will be copied or moved,</span>
<span class="sd"> only if they were modified after last_modified_time.</span>
<span class="sd"> If tzinfo has not been set, UTC will be assumed.</span>
<span class="sd"> :type last_modified_time: datetime.datetime</span>
<span class="sd"> :Example:</span>
<span class="sd"> The following Operator would copy a single file named</span>
<span class="sd"> ``sales/sales-2017/january.avro`` in the ``data`` bucket to the file named</span>
<span class="sd"> ``copied_sales/2017/january-backup.avro`` in the ``data_backup`` bucket ::</span>
<span class="sd"> copy_single_file = GoogleCloudStorageToGoogleCloudStorageOperator(</span>
<span class="sd"> task_id=&#39;copy_single_file&#39;,</span>
<span class="sd"> source_bucket=&#39;data&#39;,</span>
<span class="sd"> source_object=&#39;sales/sales-2017/january.avro&#39;,</span>
<span class="sd"> destination_bucket=&#39;data_backup&#39;,</span>
<span class="sd"> destination_object=&#39;copied_sales/2017/january-backup.avro&#39;,</span>
<span class="sd"> google_cloud_storage_conn_id=google_cloud_conn_id</span>
<span class="sd"> )</span>
<span class="sd"> The following Operator would copy all the Avro files from ``sales/sales-2017``</span>
<span class="sd"> folder (i.e. with names starting with that prefix) in ``data`` bucket to the</span>
<span class="sd"> ``copied_sales/2017`` folder in the ``data_backup`` bucket. ::</span>
<span class="sd"> copy_files = GoogleCloudStorageToGoogleCloudStorageOperator(</span>
<span class="sd"> task_id=&#39;copy_files&#39;,</span>
<span class="sd"> source_bucket=&#39;data&#39;,</span>
<span class="sd"> source_object=&#39;sales/sales-2017/*.avro&#39;,</span>
<span class="sd"> destination_bucket=&#39;data_backup&#39;,</span>
<span class="sd"> destination_object=&#39;copied_sales/2017/&#39;,</span>
<span class="sd"> google_cloud_storage_conn_id=google_cloud_conn_id</span>
<span class="sd"> )</span>
<span class="sd"> The following Operator would move all the Avro files from ``sales/sales-2017``</span>
<span class="sd"> folder (i.e. with names starting with that prefix) in ``data`` bucket to the</span>
<span class="sd"> same folder in the ``data_backup`` bucket, deleting the original files in the</span>
<span class="sd"> process. ::</span>
<span class="sd"> move_files = GoogleCloudStorageToGoogleCloudStorageOperator(</span>
<span class="sd"> task_id=&#39;move_files&#39;,</span>
<span class="sd"> source_bucket=&#39;data&#39;,</span>
<span class="sd"> source_object=&#39;sales/sales-2017/*.avro&#39;,</span>
<span class="sd"> destination_bucket=&#39;data_backup&#39;,</span>
<span class="sd"> move_object=True,</span>
<span class="sd"> google_cloud_storage_conn_id=google_cloud_conn_id</span>
<span class="sd"> )</span>
<span class="sd"> &quot;&quot;&quot;</span>
<div class="viewcode-block" id="GoogleCloudStorageToGoogleCloudStorageOperator.template_fields"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/gcs_to_gcs/index.html#airflow.contrib.operators.gcs_to_gcs.GoogleCloudStorageToGoogleCloudStorageOperator.template_fields">[docs]</a> <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">&#39;source_bucket&#39;</span><span class="p">,</span> <span class="s1">&#39;source_object&#39;</span><span class="p">,</span> <span class="s1">&#39;destination_bucket&#39;</span><span class="p">,</span>
<span class="s1">&#39;destination_object&#39;</span><span class="p">,)</span></div>
<div class="viewcode-block" id="GoogleCloudStorageToGoogleCloudStorageOperator.ui_color"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/gcs_to_gcs/index.html#airflow.contrib.operators.gcs_to_gcs.GoogleCloudStorageToGoogleCloudStorageOperator.ui_color">[docs]</a> <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">&#39;#f0eee4&#39;</span></div>
<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">source_bucket</span><span class="p">,</span>
<span class="n">source_object</span><span class="p">,</span>
<span class="n">destination_bucket</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
<span class="n">destination_object</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
<span class="n">move_object</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
<span class="n">google_cloud_storage_conn_id</span><span class="o">=</span><span class="s1">&#39;google_cloud_default&#39;</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">last_modified_time</span><span class="o">=</span><span class="kc">None</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">GoogleCloudStorageToGoogleCloudStorageOperator</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">source_bucket</span> <span class="o">=</span> <span class="n">source_bucket</span>
<span class="bp">self</span><span class="o">.</span><span class="n">source_object</span> <span class="o">=</span> <span class="n">source_object</span>
<span class="bp">self</span><span class="o">.</span><span class="n">destination_bucket</span> <span class="o">=</span> <span class="n">destination_bucket</span>
<span class="bp">self</span><span class="o">.</span><span class="n">destination_object</span> <span class="o">=</span> <span class="n">destination_object</span>
<span class="bp">self</span><span class="o">.</span><span class="n">move_object</span> <span class="o">=</span> <span class="n">move_object</span>
<span class="bp">self</span><span class="o">.</span><span class="n">google_cloud_storage_conn_id</span> <span class="o">=</span> <span class="n">google_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">last_modified_time</span> <span class="o">=</span> <span class="n">last_modified_time</span>
<div class="viewcode-block" id="GoogleCloudStorageToGoogleCloudStorageOperator.execute"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/gcs_to_gcs/index.html#airflow.contrib.operators.gcs_to_gcs.GoogleCloudStorageToGoogleCloudStorageOperator.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="n">hook</span> <span class="o">=</span> <span class="n">GoogleCloudStorageHook</span><span class="p">(</span>
<span class="n">google_cloud_storage_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">google_cloud_storage_conn_id</span><span class="p">,</span>
<span class="n">delegate_to</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">delegate_to</span>
<span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">destination_bucket</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span>
<span class="s1">&#39;destination_bucket is None. Defaulting it to source_bucket (</span><span class="si">%s</span><span class="s1">)&#39;</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">source_bucket</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">destination_bucket</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">source_bucket</span>
<span class="k">if</span> <span class="n">WILDCARD</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">source_object</span><span class="p">:</span>
<span class="n">total_wildcards</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">source_object</span><span class="o">.</span><span class="n">count</span><span class="p">(</span><span class="n">WILDCARD</span><span class="p">)</span>
<span class="k">if</span> <span class="n">total_wildcards</span> <span class="o">&gt;</span> <span class="mi">1</span><span class="p">:</span>
<span class="n">error_msg</span> <span class="o">=</span> <span class="s2">&quot;Only one wildcard &#39;*&#39; is allowed in source_object parameter. &quot;</span> \
<span class="s2">&quot;Found </span><span class="si">{}</span><span class="s2"> in </span><span class="si">{}</span><span class="s2">.&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">total_wildcards</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">source_object</span><span class="p">)</span>
<span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">error_msg</span><span class="p">)</span>
<span class="n">prefix</span><span class="p">,</span> <span class="n">delimiter</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">source_object</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="n">WILDCARD</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">objects</span> <span class="o">=</span> <span class="n">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">source_bucket</span><span class="p">,</span> <span class="n">prefix</span><span class="o">=</span><span class="n">prefix</span><span class="p">,</span> <span class="n">delimiter</span><span class="o">=</span><span class="n">delimiter</span><span class="p">)</span>
<span class="k">for</span> <span class="n">source_object</span> <span class="ow">in</span> <span class="n">objects</span><span class="p">:</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">destination_object</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">destination_object</span> <span class="o">=</span> <span class="n">source_object</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">destination_object</span> <span class="o">=</span> <span class="n">source_object</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">prefix</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">destination_object</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">_copy_single_object</span><span class="p">(</span><span class="n">hook</span><span class="o">=</span><span class="n">hook</span><span class="p">,</span> <span class="n">source_object</span><span class="o">=</span><span class="n">source_object</span><span class="p">,</span>
<span class="n">destination_object</span><span class="o">=</span><span class="n">destination_object</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">_copy_single_object</span><span class="p">(</span><span class="n">hook</span><span class="o">=</span><span class="n">hook</span><span class="p">,</span> <span class="n">source_object</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">source_object</span><span class="p">,</span>
<span class="n">destination_object</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">destination_object</span><span class="p">)</span></div>
<div class="viewcode-block" id="GoogleCloudStorageToGoogleCloudStorageOperator._copy_single_object"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/gcs_to_gcs/index.html#airflow.contrib.operators.gcs_to_gcs.GoogleCloudStorageToGoogleCloudStorageOperator._copy_single_object">[docs]</a> <span class="k">def</span> <span class="nf">_copy_single_object</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">hook</span><span class="p">,</span> <span class="n">source_object</span><span class="p">,</span> <span class="n">destination_object</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">last_modified_time</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="c1"># Check to see if object was modified after last_modified_time</span>
<span class="k">if</span> <span class="n">hook</span><span class="o">.</span><span class="n">is_updated_after</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">source_bucket</span><span class="p">,</span>
<span class="n">source_object</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">last_modified_time</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">&quot;Object has been modified after </span><span class="si">%s</span><span class="s2"> &quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">last_modified_time</span><span class="p">)</span>
<span class="k">pass</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span>
<span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">&#39;Executing copy of gs://</span><span class="si">%s</span><span class="s1">/</span><span class="si">%s</span><span class="s1"> to gs://</span><span class="si">%s</span><span class="s1">/</span><span class="si">%s</span><span class="s1">&#39;</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">source_bucket</span><span class="p">,</span> <span class="n">source_object</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">destination_bucket</span><span class="p">,</span> <span class="n">destination_object</span><span class="p">)</span>
<span class="n">hook</span><span class="o">.</span><span class="n">rewrite</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">source_bucket</span><span class="p">,</span> <span class="n">source_object</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">destination_bucket</span><span class="p">,</span> <span class="n">destination_object</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">move_object</span><span class="p">:</span>
<span class="n">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">source_bucket</span><span class="p">,</span> <span class="n">source_object</span><span class="p">)</span></div></div>
</pre></div>
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