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| <h1>Source code for airflow.contrib.hooks.gcp_function_hook</h1><div class="highlight"><pre> |
| <span></span><span class="c1"># -*- coding: utf-8 -*-</span> |
| <span class="c1">#</span> |
| <span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="c1"># or more contributor license agreements. See the NOTICE file</span> |
| <span class="c1"># distributed with this work for additional information</span> |
| <span class="c1"># regarding copyright ownership. The ASF licenses this file</span> |
| <span class="c1"># to you under the Apache License, Version 2.0 (the</span> |
| <span class="c1"># "License"); you may not use this file except in compliance</span> |
| <span class="c1"># with the License. You may obtain a copy of the License at</span> |
| <span class="c1">#</span> |
| <span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="c1">#</span> |
| <span class="c1"># Unless required by applicable law or agreed to in writing,</span> |
| <span class="c1"># software distributed under the License is distributed on an</span> |
| <span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span> |
| <span class="c1"># KIND, either express or implied. See the License for the</span> |
| <span class="c1"># specific language governing permissions and limitations</span> |
| <span class="c1"># under the License.</span> |
| |
| <span class="kn">import</span> <span class="nn">time</span> |
| <span class="kn">import</span> <span class="nn">requests</span> |
| <span class="kn">from</span> <span class="nn">googleapiclient.discovery</span> <span class="k">import</span> <span class="n">build</span> |
| |
| <span class="kn">from</span> <span class="nn">airflow</span> <span class="k">import</span> <span class="n">AirflowException</span> |
| <span class="kn">from</span> <span class="nn">airflow.contrib.hooks.gcp_api_base_hook</span> <span class="k">import</span> <span class="n">GoogleCloudBaseHook</span> |
| |
| <span class="c1"># Number of retries - used by googleapiclient method calls to perform retries</span> |
| <span class="c1"># For requests that are "retriable"</span> |
| <span class="n">NUM_RETRIES</span> <span class="o">=</span> <span class="mi">5</span> |
| |
| <span class="c1"># Time to sleep between active checks of the operation results</span> |
| <span class="n">TIME_TO_SLEEP_IN_SECONDS</span> <span class="o">=</span> <span class="mi">1</span> |
| |
| |
| <span class="c1"># noinspection PyAbstractClass</span> |
| <div class="viewcode-block" id="GcfHook"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.gcp_function_hook.GcfHook">[docs]</a><span class="k">class</span> <span class="nc">GcfHook</span><span class="p">(</span><span class="n">GoogleCloudBaseHook</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Hook for the Google Cloud Functions APIs.</span> |
| <span class="sd"> """</span> |
| <span class="n">_conn</span> <span class="o">=</span> <span class="kc">None</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">api_version</span><span class="p">,</span> |
| <span class="n">gcp_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="nb">super</span><span class="p">(</span><span class="n">GcfHook</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="n">gcp_conn_id</span><span class="p">,</span> <span class="n">delegate_to</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">api_version</span> <span class="o">=</span> <span class="n">api_version</span> |
| |
| <span class="nd">@staticmethod</span> |
| <span class="k">def</span> <span class="nf">_full_location</span><span class="p">(</span><span class="n">project_id</span><span class="p">,</span> <span class="n">location</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Retrieve full location of the function in the form of</span> |
| <span class="sd"> projects/<GCP_PROJECT_ID>/locations/<GCP_LOCATION></span> |
| |
| <span class="sd"> :param project_id: The Google Cloud Project project_id where the function belongs.</span> |
| <span class="sd"> :type project_id: str</span> |
| <span class="sd"> :param location: The location where the function is created.</span> |
| <span class="sd"> :type location: str</span> |
| <span class="sd"> :return:</span> |
| <span class="sd"> """</span> |
| <span class="k">return</span> <span class="s1">'projects/</span><span class="si">{}</span><span class="s1">/locations/</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">project_id</span><span class="p">,</span> <span class="n">location</span><span class="p">)</span> |
| |
| <div class="viewcode-block" id="GcfHook.get_conn"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.gcp_function_hook.GcfHook.get_conn">[docs]</a> <span class="k">def</span> <span class="nf">get_conn</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Retrieves the connection to Cloud Functions.</span> |
| |
| <span class="sd"> :return: Google Cloud Function services object.</span> |
| <span class="sd"> :rtype: dict</span> |
| <span class="sd"> """</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_conn</span><span class="p">:</span> |
| <span class="n">http_authorized</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_authorize</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_conn</span> <span class="o">=</span> <span class="n">build</span><span class="p">(</span><span class="s1">'cloudfunctions'</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">api_version</span><span class="p">,</span> |
| <span class="n">http</span><span class="o">=</span><span class="n">http_authorized</span><span class="p">,</span> <span class="n">cache_discovery</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_conn</span></div> |
| |
| <div class="viewcode-block" id="GcfHook.get_function"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.gcp_function_hook.GcfHook.get_function">[docs]</a> <span class="k">def</span> <span class="nf">get_function</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Returns the Cloud Function with the given name.</span> |
| |
| <span class="sd"> :param name: Name of the function.</span> |
| <span class="sd"> :type name: str</span> |
| <span class="sd"> :return: A Cloud Functions object representing the function.</span> |
| <span class="sd"> :rtype: dict</span> |
| <span class="sd"> """</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">locations</span><span class="p">()</span><span class="o">.</span><span class="n">functions</span><span class="p">()</span><span class="o">.</span><span class="n">get</span><span class="p">(</span> |
| <span class="n">name</span><span class="o">=</span><span class="n">name</span><span class="p">)</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">num_retries</span><span class="o">=</span><span class="n">NUM_RETRIES</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="GcfHook.create_new_function"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.gcp_function_hook.GcfHook.create_new_function">[docs]</a> <span class="nd">@GoogleCloudBaseHook</span><span class="o">.</span><span class="n">fallback_to_default_project_id</span> |
| <span class="k">def</span> <span class="nf">create_new_function</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">location</span><span class="p">,</span> <span class="n">body</span><span class="p">,</span> <span class="n">project_id</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Creates a new function in Cloud Function in the location specified in the body.</span> |
| |
| <span class="sd"> :param location: The location of the function.</span> |
| <span class="sd"> :type location: str</span> |
| <span class="sd"> :param body: The body required by the Cloud Functions insert API.</span> |
| <span class="sd"> :type body: dict</span> |
| <span class="sd"> :param project_id: Optional, Google Cloud Project project_id where the function belongs.</span> |
| <span class="sd"> If set to None or missing, the default project_id from the GCP connection is used.</span> |
| <span class="sd"> :type project_id: str</span> |
| <span class="sd"> :return: None</span> |
| <span class="sd"> """</span> |
| <span class="n">response</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">locations</span><span class="p">()</span><span class="o">.</span><span class="n">functions</span><span class="p">()</span><span class="o">.</span><span class="n">create</span><span class="p">(</span> |
| <span class="n">location</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">_full_location</span><span class="p">(</span><span class="n">project_id</span><span class="p">,</span> <span class="n">location</span><span class="p">),</span> |
| <span class="n">body</span><span class="o">=</span><span class="n">body</span> |
| <span class="p">)</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">num_retries</span><span class="o">=</span><span class="n">NUM_RETRIES</span><span class="p">)</span> |
| <span class="n">operation_name</span> <span class="o">=</span> <span class="n">response</span><span class="p">[</span><span class="s2">"name"</span><span class="p">]</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_wait_for_operation_to_complete</span><span class="p">(</span><span class="n">operation_name</span><span class="o">=</span><span class="n">operation_name</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="GcfHook.update_function"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.gcp_function_hook.GcfHook.update_function">[docs]</a> <span class="k">def</span> <span class="nf">update_function</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">body</span><span class="p">,</span> <span class="n">update_mask</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Updates Cloud Functions according to the specified update mask.</span> |
| |
| <span class="sd"> :param name: The name of the function.</span> |
| <span class="sd"> :type name: str</span> |
| <span class="sd"> :param body: The body required by the cloud function patch API.</span> |
| <span class="sd"> :type body: dict</span> |
| <span class="sd"> :param update_mask: The update mask - array of fields that should be patched.</span> |
| <span class="sd"> :type update_mask: [str]</span> |
| <span class="sd"> :return: None</span> |
| <span class="sd"> """</span> |
| <span class="n">response</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">locations</span><span class="p">()</span><span class="o">.</span><span class="n">functions</span><span class="p">()</span><span class="o">.</span><span class="n">patch</span><span class="p">(</span> |
| <span class="n">updateMask</span><span class="o">=</span><span class="s2">","</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">update_mask</span><span class="p">),</span> |
| <span class="n">name</span><span class="o">=</span><span class="n">name</span><span class="p">,</span> |
| <span class="n">body</span><span class="o">=</span><span class="n">body</span> |
| <span class="p">)</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">num_retries</span><span class="o">=</span><span class="n">NUM_RETRIES</span><span class="p">)</span> |
| <span class="n">operation_name</span> <span class="o">=</span> <span class="n">response</span><span class="p">[</span><span class="s2">"name"</span><span class="p">]</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_wait_for_operation_to_complete</span><span class="p">(</span><span class="n">operation_name</span><span class="o">=</span><span class="n">operation_name</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="GcfHook.upload_function_zip"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.gcp_function_hook.GcfHook.upload_function_zip">[docs]</a> <span class="nd">@GoogleCloudBaseHook</span><span class="o">.</span><span class="n">fallback_to_default_project_id</span> |
| <span class="k">def</span> <span class="nf">upload_function_zip</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">location</span><span class="p">,</span> <span class="n">zip_path</span><span class="p">,</span> <span class="n">project_id</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Uploads zip file with sources.</span> |
| |
| <span class="sd"> :param location: The location where the function is created.</span> |
| <span class="sd"> :type location: str</span> |
| <span class="sd"> :param zip_path: The path of the valid .zip file to upload.</span> |
| <span class="sd"> :type zip_path: str</span> |
| <span class="sd"> :param project_id: Optional, Google Cloud Project project_id where the function belongs.</span> |
| <span class="sd"> If set to None or missing, the default project_id from the GCP connection is used.</span> |
| <span class="sd"> :type project_id: str</span> |
| <span class="sd"> :return: The upload URL that was returned by generateUploadUrl method.</span> |
| <span class="sd"> """</span> |
| <span class="n">response</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">locations</span><span class="p">()</span><span class="o">.</span><span class="n">functions</span><span class="p">()</span><span class="o">.</span><span class="n">generateUploadUrl</span><span class="p">(</span> |
| <span class="n">parent</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">_full_location</span><span class="p">(</span><span class="n">project_id</span><span class="p">,</span> <span class="n">location</span><span class="p">)</span> |
| <span class="p">)</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">num_retries</span><span class="o">=</span><span class="n">NUM_RETRIES</span><span class="p">)</span> |
| <span class="n">upload_url</span> <span class="o">=</span> <span class="n">response</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'uploadUrl'</span><span class="p">)</span> |
| <span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">zip_path</span><span class="p">,</span> <span class="s1">'rb'</span><span class="p">)</span> <span class="k">as</span> <span class="n">fp</span><span class="p">:</span> |
| <span class="n">requests</span><span class="o">.</span><span class="n">put</span><span class="p">(</span> |
| <span class="n">url</span><span class="o">=</span><span class="n">upload_url</span><span class="p">,</span> |
| <span class="n">data</span><span class="o">=</span><span class="n">fp</span><span class="p">,</span> |
| <span class="c1"># Those two headers needs to be specified according to:</span> |
| <span class="c1"># https://cloud.google.com/functions/docs/reference/rest/v1/projects.locations.functions/generateUploadUrl</span> |
| <span class="c1"># nopep8</span> |
| <span class="n">headers</span><span class="o">=</span><span class="p">{</span> |
| <span class="s1">'Content-type'</span><span class="p">:</span> <span class="s1">'application/zip'</span><span class="p">,</span> |
| <span class="s1">'x-goog-content-length-range'</span><span class="p">:</span> <span class="s1">'0,104857600'</span><span class="p">,</span> |
| <span class="p">}</span> |
| <span class="p">)</span> |
| <span class="k">return</span> <span class="n">upload_url</span></div> |
| |
| <div class="viewcode-block" id="GcfHook.delete_function"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.gcp_function_hook.GcfHook.delete_function">[docs]</a> <span class="k">def</span> <span class="nf">delete_function</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Deletes the specified Cloud Function.</span> |
| |
| <span class="sd"> :param name: The name of the function.</span> |
| <span class="sd"> :type name: str</span> |
| <span class="sd"> :return: None</span> |
| <span class="sd"> """</span> |
| <span class="n">response</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">locations</span><span class="p">()</span><span class="o">.</span><span class="n">functions</span><span class="p">()</span><span class="o">.</span><span class="n">delete</span><span class="p">(</span> |
| <span class="n">name</span><span class="o">=</span><span class="n">name</span><span class="p">)</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">num_retries</span><span class="o">=</span><span class="n">NUM_RETRIES</span><span class="p">)</span> |
| <span class="n">operation_name</span> <span class="o">=</span> <span class="n">response</span><span class="p">[</span><span class="s2">"name"</span><span class="p">]</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_wait_for_operation_to_complete</span><span class="p">(</span><span class="n">operation_name</span><span class="o">=</span><span class="n">operation_name</span><span class="p">)</span></div> |
| |
| <span class="k">def</span> <span class="nf">_wait_for_operation_to_complete</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">operation_name</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Waits for the named operation to complete - checks status of the</span> |
| <span class="sd"> asynchronous call.</span> |
| |
| <span class="sd"> :param operation_name: The name of the operation.</span> |
| <span class="sd"> :type operation_name: str</span> |
| <span class="sd"> :return: The response returned by the operation.</span> |
| <span class="sd"> :rtype: dict</span> |
| <span class="sd"> :exception: AirflowException in case error is returned.</span> |
| <span class="sd"> """</span> |
| <span class="n">service</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span> |
| <span class="k">while</span> <span class="kc">True</span><span class="p">:</span> |
| <span class="n">operation_response</span> <span class="o">=</span> <span class="n">service</span><span class="o">.</span><span class="n">operations</span><span class="p">()</span><span class="o">.</span><span class="n">get</span><span class="p">(</span> |
| <span class="n">name</span><span class="o">=</span><span class="n">operation_name</span><span class="p">,</span> |
| <span class="p">)</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">num_retries</span><span class="o">=</span><span class="n">NUM_RETRIES</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">operation_response</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"done"</span><span class="p">):</span> |
| <span class="n">response</span> <span class="o">=</span> <span class="n">operation_response</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"response"</span><span class="p">)</span> |
| <span class="n">error</span> <span class="o">=</span> <span class="n">operation_response</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"error"</span><span class="p">)</span> |
| <span class="c1"># Note, according to documentation always either response or error is</span> |
| <span class="c1"># set when "done" == True</span> |
| <span class="k">if</span> <span class="n">error</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="n">error</span><span class="p">))</span> |
| <span class="k">return</span> <span class="n">response</span> |
| <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="n">TIME_TO_SLEEP_IN_SECONDS</span><span class="p">)</span></div> |
| </pre></div> |
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