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| <h1>Source code for airflow.contrib.hooks.gcp_spanner_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">from</span> <span class="nn">google.api_core.exceptions</span> <span class="k">import</span> <span class="n">GoogleAPICallError</span><span class="p">,</span> <span class="n">AlreadyExists</span> |
| <span class="kn">from</span> <span class="nn">google.cloud.spanner_v1.client</span> <span class="k">import</span> <span class="n">Client</span> |
| <span class="kn">from</span> <span class="nn">google.longrunning.operations_grpc_pb2</span> <span class="k">import</span> <span class="n">Operation</span> <span class="c1"># noqa: F401</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> |
| |
| |
| <div class="viewcode-block" id="CloudSpannerHook"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook">[docs]</a><span class="k">class</span> <span class="nc">CloudSpannerHook</span><span class="p">(</span><span class="n">GoogleCloudBaseHook</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Hook for Google Cloud Spanner APIs.</span> |
| |
| <span class="sd"> All the methods in the hook where project_id is used must be called with</span> |
| <span class="sd"> keyword arguments rather than positional.</span> |
| <span class="sd"> """</span> |
| <div class="viewcode-block" id="CloudSpannerHook._client"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook._client">[docs]</a> <span class="n">_client</span> <span class="o">=</span> <span class="kc">None</span></div> |
| |
| <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">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">CloudSpannerHook</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> |
| |
| <div class="viewcode-block" id="CloudSpannerHook._get_client"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook._get_client">[docs]</a> <span class="k">def</span> <span class="nf">_get_client</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">project_id</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Provides a client for interacting with the Cloud Spanner API.</span> |
| |
| <span class="sd"> :param project_id: The ID of the GCP project.</span> |
| <span class="sd"> :type project_id: str</span> |
| <span class="sd"> :return: google.cloud.spanner_v1.client.Client</span> |
| <span class="sd"> :rtype: object</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">_client</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_client</span> <span class="o">=</span> <span class="n">Client</span><span class="p">(</span><span class="n">project</span><span class="o">=</span><span class="n">project_id</span><span class="p">,</span> <span class="n">credentials</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">_get_credentials</span><span class="p">())</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_client</span></div> |
| |
| <span class="nd">@GoogleCloudBaseHook</span><span class="o">.</span><span class="n">fallback_to_default_project_id</span> |
| <div class="viewcode-block" id="CloudSpannerHook.get_instance"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook.get_instance">[docs]</a> <span class="k">def</span> <span class="nf">get_instance</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">instance_id</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"> Gets information about a particular instance.</span> |
| |
| <span class="sd"> :param project_id: Optional, The ID of the GCP project that owns the Cloud Spanner</span> |
| <span class="sd"> database. 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"> :param instance_id: The ID of the Cloud Spanner instance.</span> |
| <span class="sd"> :type instance_id: str</span> |
| <span class="sd"> :return: google.cloud.spanner_v1.instance.Instance</span> |
| <span class="sd"> :rtype: object</span> |
| <span class="sd"> """</span> |
| <span class="n">instance</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_client</span><span class="p">(</span><span class="n">project_id</span><span class="o">=</span><span class="n">project_id</span><span class="p">)</span><span class="o">.</span><span class="n">instance</span><span class="p">(</span><span class="n">instance_id</span><span class="o">=</span><span class="n">instance_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">instance</span><span class="o">.</span><span class="n">exists</span><span class="p">():</span> |
| <span class="k">return</span> <span class="kc">None</span> |
| <span class="k">return</span> <span class="n">instance</span></div> |
| |
| <div class="viewcode-block" id="CloudSpannerHook._apply_to_instance"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook._apply_to_instance">[docs]</a> <span class="k">def</span> <span class="nf">_apply_to_instance</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">project_id</span><span class="p">,</span> <span class="n">instance_id</span><span class="p">,</span> <span class="n">configuration_name</span><span class="p">,</span> <span class="n">node_count</span><span class="p">,</span> |
| <span class="n">display_name</span><span class="p">,</span> <span class="n">func</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Invokes a method on a given instance by applying a specified Callable.</span> |
| |
| <span class="sd"> :param project_id: The ID of the GCP project that owns the Cloud Spanner</span> |
| <span class="sd"> database.</span> |
| <span class="sd"> :type project_id: str</span> |
| <span class="sd"> :param instance_id: The ID of the instance.</span> |
| <span class="sd"> :type instance_id: str</span> |
| <span class="sd"> :param configuration_name: Name of the instance configuration defining how the</span> |
| <span class="sd"> instance will be created. Required for instances which do not yet exist.</span> |
| <span class="sd"> :type configuration_name: str</span> |
| <span class="sd"> :param node_count: (Optional) Number of nodes allocated to the instance.</span> |
| <span class="sd"> :type node_count: int</span> |
| <span class="sd"> :param display_name: (Optional) The display name for the instance in the Cloud</span> |
| <span class="sd"> Console UI. (Must be between 4 and 30 characters.) If this value is not set</span> |
| <span class="sd"> in the constructor, will fall back to the instance ID.</span> |
| <span class="sd"> :type display_name: str</span> |
| <span class="sd"> :param func: Method of the instance to be called.</span> |
| <span class="sd"> :type func: Callable</span> |
| <span class="sd"> """</span> |
| <span class="c1"># noinspection PyUnresolvedReferences</span> |
| <span class="n">instance</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_client</span><span class="p">(</span><span class="n">project_id</span><span class="o">=</span><span class="n">project_id</span><span class="p">)</span><span class="o">.</span><span class="n">instance</span><span class="p">(</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">instance_id</span><span class="p">,</span> <span class="n">configuration_name</span><span class="o">=</span><span class="n">configuration_name</span><span class="p">,</span> |
| <span class="n">node_count</span><span class="o">=</span><span class="n">node_count</span><span class="p">,</span> <span class="n">display_name</span><span class="o">=</span><span class="n">display_name</span><span class="p">)</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">operation</span> <span class="o">=</span> <span class="n">func</span><span class="p">(</span><span class="n">instance</span><span class="p">)</span> <span class="c1"># type: Operation</span> |
| <span class="k">except</span> <span class="n">GoogleAPICallError</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">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s1">'An error occurred: </span><span class="si">%s</span><span class="s1">. Exiting.'</span><span class="p">,</span> <span class="n">e</span><span class="o">.</span><span class="n">message</span><span class="p">)</span> |
| <span class="k">raise</span> <span class="n">e</span> |
| |
| <span class="k">if</span> <span class="n">operation</span><span class="p">:</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="n">operation</span><span class="o">.</span><span class="n">result</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="n">result</span><span class="p">)</span></div> |
| |
| <span class="nd">@GoogleCloudBaseHook</span><span class="o">.</span><span class="n">fallback_to_default_project_id</span> |
| <div class="viewcode-block" id="CloudSpannerHook.create_instance"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook.create_instance">[docs]</a> <span class="k">def</span> <span class="nf">create_instance</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">instance_id</span><span class="p">,</span> <span class="n">configuration_name</span><span class="p">,</span> <span class="n">node_count</span><span class="p">,</span> |
| <span class="n">display_name</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 Cloud Spanner instance.</span> |
| |
| <span class="sd"> :param instance_id: The ID of the Cloud Spanner instance.</span> |
| <span class="sd"> :type instance_id: str</span> |
| <span class="sd"> :param configuration_name: The name of the instance configuration defining how the</span> |
| <span class="sd"> instance will be created. Possible configuration values can be retrieved via</span> |
| <span class="sd"> https://cloud.google.com/spanner/docs/reference/rest/v1/projects.instanceConfigs/list</span> |
| <span class="sd"> :type configuration_name: str</span> |
| <span class="sd"> :param node_count: (Optional) The number of nodes allocated to the Cloud Spanner</span> |
| <span class="sd"> instance.</span> |
| <span class="sd"> :type node_count: int</span> |
| <span class="sd"> :param display_name: (Optional) The display name for the instance in the GCP</span> |
| <span class="sd"> Console. Must be between 4 and 30 characters. If this value is not set in</span> |
| <span class="sd"> the constructor, the name falls back to the instance ID.</span> |
| <span class="sd"> :type display_name: str</span> |
| <span class="sd"> :param project_id: Optional, the ID of the GCP project that owns the Cloud Spanner</span> |
| <span class="sd"> database. 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="bp">self</span><span class="o">.</span><span class="n">_apply_to_instance</span><span class="p">(</span><span class="n">project_id</span><span class="p">,</span> <span class="n">instance_id</span><span class="p">,</span> <span class="n">configuration_name</span><span class="p">,</span> |
| <span class="n">node_count</span><span class="p">,</span> <span class="n">display_name</span><span class="p">,</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">create</span><span class="p">())</span></div> |
| |
| <span class="nd">@GoogleCloudBaseHook</span><span class="o">.</span><span class="n">fallback_to_default_project_id</span> |
| <div class="viewcode-block" id="CloudSpannerHook.update_instance"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook.update_instance">[docs]</a> <span class="k">def</span> <span class="nf">update_instance</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">instance_id</span><span class="p">,</span> <span class="n">configuration_name</span><span class="p">,</span> <span class="n">node_count</span><span class="p">,</span> |
| <span class="n">display_name</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"> Updates an existing Cloud Spanner instance.</span> |
| |
| <span class="sd"> :param instance_id: The ID of the Cloud Spanner instance.</span> |
| <span class="sd"> :type instance_id: str</span> |
| <span class="sd"> :param configuration_name: The name of the instance configuration defining how the</span> |
| <span class="sd"> instance will be created. Possible configuration values can be retrieved via</span> |
| <span class="sd"> https://cloud.google.com/spanner/docs/reference/rest/v1/projects.instanceConfigs/list</span> |
| <span class="sd"> :type configuration_name: str</span> |
| <span class="sd"> :param node_count: (Optional) The number of nodes allocated to the Cloud Spanner</span> |
| <span class="sd"> instance.</span> |
| <span class="sd"> :type node_count: int</span> |
| <span class="sd"> :param display_name: (Optional) The display name for the instance in the GCP</span> |
| <span class="sd"> Console. Must be between 4 and 30 characters. If this value is not set in</span> |
| <span class="sd"> the constructor, the name falls back to the instance ID.</span> |
| <span class="sd"> :type display_name: str</span> |
| <span class="sd"> :param project_id: Optional, the ID of the GCP project that owns the Cloud Spanner</span> |
| <span class="sd"> database. 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="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_apply_to_instance</span><span class="p">(</span><span class="n">project_id</span><span class="p">,</span> <span class="n">instance_id</span><span class="p">,</span> <span class="n">configuration_name</span><span class="p">,</span> |
| <span class="n">node_count</span><span class="p">,</span> <span class="n">display_name</span><span class="p">,</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">update</span><span class="p">())</span></div> |
| |
| <span class="nd">@GoogleCloudBaseHook</span><span class="o">.</span><span class="n">fallback_to_default_project_id</span> |
| <div class="viewcode-block" id="CloudSpannerHook.delete_instance"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook.delete_instance">[docs]</a> <span class="k">def</span> <span class="nf">delete_instance</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">instance_id</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"> Deletes an existing Cloud Spanner instance.</span> |
| |
| <span class="sd"> :param instance_id: The ID of the Cloud Spanner instance.</span> |
| <span class="sd"> :type instance_id: str</span> |
| <span class="sd"> :param project_id: Optional, the ID of the GCP project that owns the Cloud Spanner</span> |
| <span class="sd"> database. 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">instance</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_client</span><span class="p">(</span><span class="n">project_id</span><span class="o">=</span><span class="n">project_id</span><span class="p">)</span><span class="o">.</span><span class="n">instance</span><span class="p">(</span><span class="n">instance_id</span><span class="p">)</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">instance</span><span class="o">.</span><span class="n">delete</span><span class="p">()</span> |
| <span class="k">return</span> |
| <span class="k">except</span> <span class="n">GoogleAPICallError</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">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s1">'An error occurred: </span><span class="si">%s</span><span class="s1">. Exiting.'</span><span class="p">,</span> <span class="n">e</span><span class="o">.</span><span class="n">message</span><span class="p">)</span> |
| <span class="k">raise</span> <span class="n">e</span></div> |
| |
| <span class="nd">@GoogleCloudBaseHook</span><span class="o">.</span><span class="n">fallback_to_default_project_id</span> |
| <div class="viewcode-block" id="CloudSpannerHook.get_database"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook.get_database">[docs]</a> <span class="k">def</span> <span class="nf">get_database</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">instance_id</span><span class="p">,</span> <span class="n">database_id</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"> Retrieves a database in Cloud Spanner. If the database does not exist</span> |
| <span class="sd"> in the specified instance, it returns None.</span> |
| |
| <span class="sd"> :param instance_id: The ID of the Cloud Spanner instance.</span> |
| <span class="sd"> :type instance_id: str</span> |
| <span class="sd"> :param database_id: The ID of the database in Cloud Spanner.</span> |
| <span class="sd"> :type database_id: str</span> |
| <span class="sd"> :param project_id: Optional, the ID of the GCP project that owns the Cloud Spanner</span> |
| <span class="sd"> database. 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: Database object or None if database does not exist</span> |
| <span class="sd"> :rtype: google.cloud.spanner_v1.database.Database or None</span> |
| <span class="sd"> """</span> |
| |
| <span class="n">instance</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_client</span><span class="p">(</span><span class="n">project_id</span><span class="o">=</span><span class="n">project_id</span><span class="p">)</span><span class="o">.</span><span class="n">instance</span><span class="p">(</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">instance_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">instance</span><span class="o">.</span><span class="n">exists</span><span class="p">():</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"The instance </span><span class="si">{}</span><span class="s2"> does not exist in project </span><span class="si">{}</span><span class="s2"> !"</span><span class="o">.</span> |
| <span class="nb">format</span><span class="p">(</span><span class="n">instance_id</span><span class="p">,</span> <span class="n">project_id</span><span class="p">))</span> |
| <span class="n">database</span> <span class="o">=</span> <span class="n">instance</span><span class="o">.</span><span class="n">database</span><span class="p">(</span><span class="n">database_id</span><span class="o">=</span><span class="n">database_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">database</span><span class="o">.</span><span class="n">exists</span><span class="p">():</span> |
| <span class="k">return</span> <span class="kc">None</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">database</span></div> |
| |
| <span class="nd">@GoogleCloudBaseHook</span><span class="o">.</span><span class="n">fallback_to_default_project_id</span> |
| <div class="viewcode-block" id="CloudSpannerHook.create_database"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook.create_database">[docs]</a> <span class="k">def</span> <span class="nf">create_database</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">instance_id</span><span class="p">,</span> <span class="n">database_id</span><span class="p">,</span> <span class="n">ddl_statements</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 database in Cloud Spanner.</span> |
| |
| <span class="sd"> :type project_id: str</span> |
| <span class="sd"> :param instance_id: The ID of the Cloud Spanner instance.</span> |
| <span class="sd"> :type instance_id: str</span> |
| <span class="sd"> :param database_id: The ID of the database to create in Cloud Spanner.</span> |
| <span class="sd"> :type database_id: str</span> |
| <span class="sd"> :param ddl_statements: The string list containing DDL for the new database.</span> |
| <span class="sd"> :type ddl_statements: list[str]</span> |
| <span class="sd"> :param project_id: Optional, the ID of the GCP project that owns the Cloud Spanner</span> |
| <span class="sd"> database. If set to None or missing, the default project_id from the GCP connection is used.</span> |
| <span class="sd"> :return: None</span> |
| <span class="sd"> """</span> |
| |
| <span class="n">instance</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_client</span><span class="p">(</span><span class="n">project_id</span><span class="o">=</span><span class="n">project_id</span><span class="p">)</span><span class="o">.</span><span class="n">instance</span><span class="p">(</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">instance_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">instance</span><span class="o">.</span><span class="n">exists</span><span class="p">():</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"The instance </span><span class="si">{}</span><span class="s2"> does not exist in project </span><span class="si">{}</span><span class="s2"> !"</span><span class="o">.</span> |
| <span class="nb">format</span><span class="p">(</span><span class="n">instance_id</span><span class="p">,</span> <span class="n">project_id</span><span class="p">))</span> |
| <span class="n">database</span> <span class="o">=</span> <span class="n">instance</span><span class="o">.</span><span class="n">database</span><span class="p">(</span><span class="n">database_id</span><span class="o">=</span><span class="n">database_id</span><span class="p">,</span> |
| <span class="n">ddl_statements</span><span class="o">=</span><span class="n">ddl_statements</span><span class="p">)</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">operation</span> <span class="o">=</span> <span class="n">database</span><span class="o">.</span><span class="n">create</span><span class="p">()</span> <span class="c1"># type: Operation</span> |
| <span class="k">except</span> <span class="n">GoogleAPICallError</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">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s1">'An error occurred: </span><span class="si">%s</span><span class="s1">. Exiting.'</span><span class="p">,</span> <span class="n">e</span><span class="o">.</span><span class="n">message</span><span class="p">)</span> |
| <span class="k">raise</span> <span class="n">e</span> |
| |
| <span class="k">if</span> <span class="n">operation</span><span class="p">:</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="n">operation</span><span class="o">.</span><span class="n">result</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="n">result</span><span class="p">)</span> |
| <span class="k">return</span></div> |
| |
| <span class="nd">@GoogleCloudBaseHook</span><span class="o">.</span><span class="n">fallback_to_default_project_id</span> |
| <div class="viewcode-block" id="CloudSpannerHook.update_database"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook.update_database">[docs]</a> <span class="k">def</span> <span class="nf">update_database</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">instance_id</span><span class="p">,</span> <span class="n">database_id</span><span class="p">,</span> <span class="n">ddl_statements</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="n">operation_id</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Updates DDL of a database in Cloud Spanner.</span> |
| |
| <span class="sd"> :type project_id: str</span> |
| <span class="sd"> :param instance_id: The ID of the Cloud Spanner instance.</span> |
| <span class="sd"> :type instance_id: str</span> |
| <span class="sd"> :param database_id: The ID of the database in Cloud Spanner.</span> |
| <span class="sd"> :type database_id: str</span> |
| <span class="sd"> :param ddl_statements: The string list containing DDL for the new database.</span> |
| <span class="sd"> :type ddl_statements: list[str]</span> |
| <span class="sd"> :param project_id: Optional, the ID of the GCP project that owns the Cloud Spanner</span> |
| <span class="sd"> database. If set to None or missing, the default project_id from the GCP connection is used.</span> |
| <span class="sd"> :param operation_id: (Optional) The unique per database operation ID that can be</span> |
| <span class="sd"> specified to implement idempotency check.</span> |
| <span class="sd"> :type operation_id: str</span> |
| <span class="sd"> :return: None</span> |
| <span class="sd"> """</span> |
| |
| <span class="n">instance</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_client</span><span class="p">(</span><span class="n">project_id</span><span class="o">=</span><span class="n">project_id</span><span class="p">)</span><span class="o">.</span><span class="n">instance</span><span class="p">(</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">instance_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">instance</span><span class="o">.</span><span class="n">exists</span><span class="p">():</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"The instance </span><span class="si">{}</span><span class="s2"> does not exist in project </span><span class="si">{}</span><span class="s2"> !"</span><span class="o">.</span> |
| <span class="nb">format</span><span class="p">(</span><span class="n">instance_id</span><span class="p">,</span> <span class="n">project_id</span><span class="p">))</span> |
| <span class="n">database</span> <span class="o">=</span> <span class="n">instance</span><span class="o">.</span><span class="n">database</span><span class="p">(</span><span class="n">database_id</span><span class="o">=</span><span class="n">database_id</span><span class="p">)</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">operation</span> <span class="o">=</span> <span class="n">database</span><span class="o">.</span><span class="n">update_ddl</span><span class="p">(</span> |
| <span class="n">ddl_statements</span><span class="o">=</span><span class="n">ddl_statements</span><span class="p">,</span> <span class="n">operation_id</span><span class="o">=</span><span class="n">operation_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">operation</span><span class="p">:</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="n">operation</span><span class="o">.</span><span class="n">result</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="n">result</span><span class="p">)</span> |
| <span class="k">return</span> |
| <span class="k">except</span> <span class="n">AlreadyExists</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">e</span><span class="o">.</span><span class="n">code</span> <span class="o">==</span> <span class="mi">409</span> <span class="ow">and</span> <span class="n">operation_id</span> <span class="ow">in</span> <span class="n">e</span><span class="o">.</span><span class="n">message</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="s2">"Replayed update_ddl message - the operation id </span><span class="si">%s</span><span class="s2"> "</span> |
| <span class="s2">"was already done before."</span><span class="p">,</span> <span class="n">operation_id</span><span class="p">)</span> |
| <span class="k">return</span> |
| <span class="k">except</span> <span class="n">GoogleAPICallError</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">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s1">'An error occurred: </span><span class="si">%s</span><span class="s1">. Exiting.'</span><span class="p">,</span> <span class="n">e</span><span class="o">.</span><span class="n">message</span><span class="p">)</span> |
| <span class="k">raise</span> <span class="n">e</span></div> |
| |
| <span class="nd">@GoogleCloudBaseHook</span><span class="o">.</span><span class="n">fallback_to_default_project_id</span> |
| <div class="viewcode-block" id="CloudSpannerHook.delete_database"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook.delete_database">[docs]</a> <span class="k">def</span> <span class="nf">delete_database</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">instance_id</span><span class="p">,</span> <span class="n">database_id</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"> Drops a database in Cloud Spanner.</span> |
| |
| <span class="sd"> :type project_id: str</span> |
| <span class="sd"> :param instance_id: The ID of the Cloud Spanner instance.</span> |
| <span class="sd"> :type instance_id: str</span> |
| <span class="sd"> :param database_id: The ID of the database in Cloud Spanner.</span> |
| <span class="sd"> :type database_id: str</span> |
| <span class="sd"> :param project_id: Optional, the ID of the GCP project that owns the Cloud Spanner</span> |
| <span class="sd"> database. If set to None or missing, the default project_id from the GCP connection is used.</span> |
| <span class="sd"> :return: True if everything succeeded</span> |
| <span class="sd"> :rtype: bool</span> |
| <span class="sd"> """</span> |
| |
| <span class="n">instance</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_client</span><span class="p">(</span><span class="n">project_id</span><span class="o">=</span><span class="n">project_id</span><span class="p">)</span><span class="o">.</span>\ |
| <span class="n">instance</span><span class="p">(</span><span class="n">instance_id</span><span class="o">=</span><span class="n">instance_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">instance</span><span class="o">.</span><span class="n">exists</span><span class="p">():</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"The instance </span><span class="si">{}</span><span class="s2"> does not exist in project </span><span class="si">{}</span><span class="s2"> !"</span><span class="o">.</span> |
| <span class="nb">format</span><span class="p">(</span><span class="n">instance_id</span><span class="p">,</span> <span class="n">project_id</span><span class="p">))</span> |
| <span class="n">database</span> <span class="o">=</span> <span class="n">instance</span><span class="o">.</span><span class="n">database</span><span class="p">(</span><span class="n">database_id</span><span class="o">=</span><span class="n">database_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">database</span><span class="o">.</span><span class="n">exists</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="s2">"The database </span><span class="si">{}</span><span class="s2"> is already deleted from instance </span><span class="si">{}</span><span class="s2">. "</span> |
| <span class="s2">"Exiting."</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">database_id</span><span class="p">,</span> <span class="n">instance_id</span><span class="p">))</span> |
| <span class="k">return</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">operation</span> <span class="o">=</span> <span class="n">database</span><span class="o">.</span><span class="n">drop</span><span class="p">()</span> <span class="c1"># type: Operation</span> |
| <span class="k">except</span> <span class="n">GoogleAPICallError</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">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s1">'An error occurred: </span><span class="si">%s</span><span class="s1">. Exiting.'</span><span class="p">,</span> <span class="n">e</span><span class="o">.</span><span class="n">message</span><span class="p">)</span> |
| <span class="k">raise</span> <span class="n">e</span> |
| |
| <span class="k">if</span> <span class="n">operation</span><span class="p">:</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="n">operation</span><span class="o">.</span><span class="n">result</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="n">result</span><span class="p">)</span> |
| <span class="k">return</span></div> |
| |
| <span class="nd">@GoogleCloudBaseHook</span><span class="o">.</span><span class="n">fallback_to_default_project_id</span> |
| <div class="viewcode-block" id="CloudSpannerHook.execute_dml"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook.execute_dml">[docs]</a> <span class="k">def</span> <span class="nf">execute_dml</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">instance_id</span><span class="p">,</span> <span class="n">database_id</span><span class="p">,</span> <span class="n">queries</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"> Executes an arbitrary DML query (INSERT, UPDATE, DELETE).</span> |
| |
| <span class="sd"> :param instance_id: The ID of the Cloud Spanner instance.</span> |
| <span class="sd"> :type instance_id: str</span> |
| <span class="sd"> :param database_id: The ID of the database in Cloud Spanner.</span> |
| <span class="sd"> :type database_id: str</span> |
| <span class="sd"> :param queries: The queries to execute.</span> |
| <span class="sd"> :type queries: str</span> |
| <span class="sd"> :param project_id: Optional, the ID of the GCP project that owns the Cloud Spanner</span> |
| <span class="sd"> database. 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"> """</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_get_client</span><span class="p">(</span><span class="n">project_id</span><span class="o">=</span><span class="n">project_id</span><span class="p">)</span><span class="o">.</span><span class="n">instance</span><span class="p">(</span><span class="n">instance_id</span><span class="o">=</span><span class="n">instance_id</span><span class="p">)</span><span class="o">.</span>\ |
| <span class="n">database</span><span class="p">(</span><span class="n">database_id</span><span class="o">=</span><span class="n">database_id</span><span class="p">)</span><span class="o">.</span><span class="n">run_in_transaction</span><span class="p">(</span> |
| <span class="k">lambda</span> <span class="n">transaction</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_execute_sql_in_transaction</span><span class="p">(</span><span class="n">transaction</span><span class="p">,</span> <span class="n">queries</span><span class="p">))</span></div> |
| |
| <span class="nd">@staticmethod</span> |
| <div class="viewcode-block" id="CloudSpannerHook._execute_sql_in_transaction"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook._execute_sql_in_transaction">[docs]</a> <span class="k">def</span> <span class="nf">_execute_sql_in_transaction</span><span class="p">(</span><span class="n">transaction</span><span class="p">,</span> <span class="n">queries</span><span class="p">):</span> |
| <span class="k">for</span> <span class="n">sql</span> <span class="ow">in</span> <span class="n">queries</span><span class="p">:</span> |
| <span class="n">transaction</span><span class="o">.</span><span class="n">execute_update</span><span class="p">(</span><span class="n">sql</span><span class="p">)</span></div></div> |
| </pre></div> |
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