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Posted to commits@airflow.apache.org by cr...@apache.org on 2018/01/03 17:48:32 UTC
[32/35] incubator-airflow-site git commit: 1.9.0
http://git-wip-us.apache.org/repos/asf/incubator-airflow-site/blob/28a3eb60/_modules/airflow/contrib/hooks/datastore_hook.html
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+ <h1>Source code for airflow.contrib.hooks.datastore_hook</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed under the Apache License, Version 2.0 (the "License");</span>
+<span class="c1"># you may not use this file except in compliance with the License.</span>
+<span class="c1"># You may obtain a copy of the License at</span>
+<span class="c1">#</span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1">#</span>
+<span class="c1"># Unless required by applicable law or agreed to in writing, software</span>
+<span class="c1"># distributed under the License is distributed on an "AS IS" BASIS,</span>
+<span class="c1"># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
+<span class="c1"># See the License for the specific language governing permissions and</span>
+<span class="c1"># limitations under the License.</span>
+<span class="c1">#</span>
+
+<span class="kn">import</span> <span class="nn">json</span>
+<span class="kn">import</span> <span class="nn">time</span>
+<span class="kn">from</span> <span class="nn">apiclient.discovery</span> <span class="k">import</span> <span class="n">build</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="DatastoreHook"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.datastore_hook.DatastoreHook">[docs]</a><span class="k">class</span> <span class="nc">DatastoreHook</span><span class="p">(</span><span class="n">GoogleCloudBaseHook</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Interact with Google Cloud Datastore. This hook uses the Google Cloud Platform</span>
+<span class="sd"> connection.</span>
+
+<span class="sd"> This object is not threads safe. If you want to make multiple requests</span>
+<span class="sd"> simultaniously, you will need to create a hook per thread.</span>
+<span class="sd"> """</span>
+
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span>
+ <span class="n">datastore_conn_id</span><span class="o">=</span><span class="s1">'google_cloud_datastore_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">DatastoreHook</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">datastore_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">connection</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="bp">self</span><span class="o">.</span><span class="n">admin_connection</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="s1">'v1beta1'</span><span class="p">)</span>
+
+<div class="viewcode-block" id="DatastoreHook.get_conn"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.datastore_hook.DatastoreHook.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="n">version</span><span class="o">=</span><span class="s1">'v1'</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Returns a Google Cloud Storage service object.</span>
+<span class="sd"> """</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="k">return</span> <span class="n">build</span><span class="p">(</span><span class="s1">'datastore'</span><span class="p">,</span> <span class="n">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></div>
+
+<div class="viewcode-block" id="DatastoreHook.allocate_ids"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.datastore_hook.DatastoreHook.allocate_ids">[docs]</a> <span class="k">def</span> <span class="nf">allocate_ids</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">partialKeys</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Allocate IDs for incomplete keys.</span>
+<span class="sd"> see https://cloud.google.com/datastore/docs/reference/rest/v1/projects/allocateIds</span>
+
+<span class="sd"> :param partialKeys: a list of partial keys</span>
+<span class="sd"> :return: a list of full keys.</span>
+<span class="sd"> """</span>
+ <span class="n">resp</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">connection</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">allocateIds</span><span class="p">(</span><span class="n">projectId</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">project_id</span><span class="p">,</span> <span class="n">body</span><span class="o">=</span><span class="p">{</span><span class="s1">'keys'</span><span class="p">:</span> <span class="n">partialKeys</span><span class="p">})</span><span class="o">.</span><span class="n">execute</span><span class="p">()</span>
+ <span class="k">return</span> <span class="n">resp</span><span class="p">[</span><span class="s1">'keys'</span><span class="p">]</span></div>
+
+<div class="viewcode-block" id="DatastoreHook.begin_transaction"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.datastore_hook.DatastoreHook.begin_transaction">[docs]</a> <span class="k">def</span> <span class="nf">begin_transaction</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Get a new transaction handle</span>
+<span class="sd"> see https://cloud.google.com/datastore/docs/reference/rest/v1/projects/beginTransaction</span>
+
+<span class="sd"> :return: a transaction handle</span>
+<span class="sd"> """</span>
+ <span class="n">resp</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">connection</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">beginTransaction</span><span class="p">(</span><span class="n">projectId</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">project_id</span><span class="p">,</span> <span class="n">body</span><span class="o">=</span><span class="p">{})</span><span class="o">.</span><span class="n">execute</span><span class="p">()</span>
+ <span class="k">return</span> <span class="n">resp</span><span class="p">[</span><span class="s1">'transaction'</span><span class="p">]</span></div>
+
+<div class="viewcode-block" id="DatastoreHook.commit"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.datastore_hook.DatastoreHook.commit">[docs]</a> <span class="k">def</span> <span class="nf">commit</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">body</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Commit a transaction, optionally creating, deleting or modifying some entities.</span>
+<span class="sd"> see https://cloud.google.com/datastore/docs/reference/rest/v1/projects/commit</span>
+
+<span class="sd"> :param body: the body of the commit request</span>
+<span class="sd"> :return: the response body of the commit request</span>
+<span class="sd"> """</span>
+ <span class="n">resp</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">connection</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">commit</span><span class="p">(</span><span class="n">projectId</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">project_id</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="k">return</span> <span class="n">resp</span></div>
+
+<div class="viewcode-block" id="DatastoreHook.lookup"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.datastore_hook.DatastoreHook.lookup">[docs]</a> <span class="k">def</span> <span class="nf">lookup</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">keys</span><span class="p">,</span> <span class="n">read_consistency</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">transaction</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Lookup some entities by key</span>
+<span class="sd"> see https://cloud.google.com/datastore/docs/reference/rest/v1/projects/lookup</span>
+<span class="sd"> :param keys: the keys to lookup</span>
+<span class="sd"> :param read_consistency: the read consistency to use. default, strong or eventual.</span>
+<span class="sd"> Cannot be used with a transaction.</span>
+<span class="sd"> :param transaction: the transaction to use, if any.</span>
+<span class="sd"> :return: the response body of the lookup request.</span>
+<span class="sd"> """</span>
+ <span class="n">body</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'keys'</span><span class="p">:</span> <span class="n">keys</span><span class="p">}</span>
+ <span class="k">if</span> <span class="n">read_consistency</span><span class="p">:</span>
+ <span class="n">body</span><span class="p">[</span><span class="s1">'readConsistency'</span><span class="p">]</span> <span class="o">=</span> <span class="n">read_consistency</span>
+ <span class="k">if</span> <span class="n">transaction</span><span class="p">:</span>
+ <span class="n">body</span><span class="p">[</span><span class="s1">'transaction'</span><span class="p">]</span> <span class="o">=</span> <span class="n">transaction</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">connection</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">lookup</span><span class="p">(</span><span class="n">projectId</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">project_id</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></div>
+
+<div class="viewcode-block" id="DatastoreHook.rollback"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.datastore_hook.DatastoreHook.rollback">[docs]</a> <span class="k">def</span> <span class="nf">rollback</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">transaction</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Roll back a transaction</span>
+<span class="sd"> see https://cloud.google.com/datastore/docs/reference/rest/v1/projects/rollback</span>
+<span class="sd"> :param transaction: the transaction to roll back</span>
+<span class="sd"> """</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">connection</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">rollback</span><span class="p">(</span><span class="n">projectId</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">project_id</span><span class="p">,</span> <span class="n">body</span><span class="o">=</span><span class="p">{</span><span class="s1">'transaction'</span><span class="p">:</span> <span class="n">transaction</span><span class="p">})</span>\
+ <span class="o">.</span><span class="n">execute</span><span class="p">()</span></div>
+
+<div class="viewcode-block" id="DatastoreHook.run_query"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.datastore_hook.DatastoreHook.run_query">[docs]</a> <span class="k">def</span> <span class="nf">run_query</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">body</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Run a query for entities.</span>
+<span class="sd"> see https://cloud.google.com/datastore/docs/reference/rest/v1/projects/runQuery</span>
+<span class="sd"> :param body: the body of the query request</span>
+<span class="sd"> :return: the batch of query results.</span>
+<span class="sd"> """</span>
+ <span class="n">resp</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">connection</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">runQuery</span><span class="p">(</span><span class="n">projectId</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">project_id</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="k">return</span> <span class="n">resp</span><span class="p">[</span><span class="s1">'batch'</span><span class="p">]</span></div>
+
+<div class="viewcode-block" id="DatastoreHook.get_operation"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.datastore_hook.DatastoreHook.get_operation">[docs]</a> <span class="k">def</span> <span class="nf">get_operation</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"> Gets the latest state of a long-running operation</span>
+
+<span class="sd"> :param name: the name of the operation resource</span>
+<span class="sd"> """</span>
+ <span class="n">resp</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">connection</span><span class="o">.</span><span class="n">projects</span><span class="p">()</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">name</span><span class="p">)</span><span class="o">.</span><span class="n">execute</span><span class="p">()</span>
+ <span class="k">return</span> <span class="n">resp</span></div>
+
+<div class="viewcode-block" id="DatastoreHook.delete_operation"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.datastore_hook.DatastoreHook.delete_operation">[docs]</a> <span class="k">def</span> <span class="nf">delete_operation</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 long-running operation</span>
+
+<span class="sd"> :param name: the name of the operation resource</span>
+<span class="sd"> """</span>
+ <span class="n">resp</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">connection</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">operations</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="k">return</span> <span class="n">resp</span></div>
+
+<div class="viewcode-block" id="DatastoreHook.poll_operation_until_done"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.datastore_hook.DatastoreHook.poll_operation_until_done">[docs]</a> <span class="k">def</span> <span class="nf">poll_operation_until_done</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">polling_interval_in_seconds</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Poll backup operation state until it's completed</span>
+<span class="sd"> """</span>
+ <span class="k">while</span> <span class="kc">True</span><span class="p">:</span>
+ <span class="n">result</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_operation</span><span class="p">(</span><span class="n">name</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">'PROCESSING'</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">'Operation is processing. Re-polling state in </span><span class="si">{}</span><span class="s1"> seconds'</span>
+ <span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">polling_interval_in_seconds</span><span class="p">))</span>
+ <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="n">polling_interval_in_seconds</span><span class="p">)</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="k">return</span> <span class="n">result</span></div>
+
+<div class="viewcode-block" id="DatastoreHook.export_to_storage_bucket"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.datastore_hook.DatastoreHook.export_to_storage_bucket">[docs]</a> <span class="k">def</span> <span class="nf">export_to_storage_bucket</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">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="sd">"""</span>
+<span class="sd"> Export entities from Cloud Datastore to Cloud Storage for backup</span>
+<span class="sd"> """</span>
+ <span class="n">output_uri_prefix</span> <span class="o">=</span> <span class="s1">'gs://'</span> <span class="o">+</span> <span class="p">(</span><span class="s1">'/'</span><span class="p">)</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="nb">filter</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="p">[</span><span class="n">bucket</span><span class="p">,</span> <span class="n">namespace</span><span class="p">]))</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">entity_filter</span><span class="p">:</span>
+ <span class="n">entity_filter</span> <span class="o">=</span> <span class="p">{}</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">labels</span><span class="p">:</span>
+ <span class="n">labels</span> <span class="o">=</span> <span class="p">{}</span>
+ <span class="n">body</span> <span class="o">=</span> <span class="p">{</span>
+ <span class="s1">'outputUrlPrefix'</span><span class="p">:</span> <span class="n">output_uri_prefix</span><span class="p">,</span>
+ <span class="s1">'entityFilter'</span><span class="p">:</span> <span class="n">entity_filter</span><span class="p">,</span>
+ <span class="s1">'labels'</span><span class="p">:</span> <span class="n">labels</span><span class="p">,</span>
+ <span class="p">}</span>
+ <span class="n">resp</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">admin_connection</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">export</span><span class="p">(</span><span class="n">projectId</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">project_id</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="k">return</span> <span class="n">resp</span></div>
+
+<div class="viewcode-block" id="DatastoreHook.import_from_storage_bucket"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.datastore_hook.DatastoreHook.import_from_storage_bucket">[docs]</a> <span class="k">def</span> <span class="nf">import_from_storage_bucket</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">file</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">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="sd">"""</span>
+<span class="sd"> Import a backup from Cloud Storage to Cloud Datastore</span>
+<span class="sd"> """</span>
+ <span class="n">input_url</span> <span class="o">=</span> <span class="s1">'gs://'</span> <span class="o">+</span> <span class="p">(</span><span class="s1">'/'</span><span class="p">)</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="nb">filter</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="p">[</span><span class="n">bucket</span><span class="p">,</span> <span class="n">namespace</span><span class="p">,</span> <span class="n">file</span><span class="p">]))</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">entity_filter</span><span class="p">:</span>
+ <span class="n">entity_filter</span> <span class="o">=</span> <span class="p">{}</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">labels</span><span class="p">:</span>
+ <span class="n">labels</span> <span class="o">=</span> <span class="p">{}</span>
+ <span class="n">body</span> <span class="o">=</span> <span class="p">{</span>
+ <span class="s1">'inputUrl'</span><span class="p">:</span> <span class="n">input_url</span><span class="p">,</span>
+ <span class="s1">'entityFilter'</span><span class="p">:</span> <span class="n">entity_filter</span><span class="p">,</span>
+ <span class="s1">'labels'</span><span class="p">:</span> <span class="n">labels</span><span class="p">,</span>
+ <span class="p">}</span>
+ <span class="n">resp</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">admin_connection</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">import_</span><span class="p">(</span><span class="n">projectId</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">project_id</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="k">return</span> <span class="n">resp</span></div></div>
+</pre></div>
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----------------------------------------------------------------------
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+
+ <h1>Source code for airflow.contrib.hooks.emr_hook</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed under the Apache License, Version 2.0 (the "License");</span>
+<span class="c1"># you may not use this file except in compliance with the License.</span>
+<span class="c1"># You may obtain a copy of the License at</span>
+<span class="c1">#</span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1">#</span>
+<span class="c1"># Unless required by applicable law or agreed to in writing, software</span>
+<span class="c1"># distributed under the License is distributed on an "AS IS" BASIS,</span>
+<span class="c1"># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
+<span class="c1"># See the License for the specific language governing permissions and</span>
+<span class="c1"># limitations under the License.</span>
+
+<span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="k">import</span> <span class="n">AirflowException</span>
+<span class="kn">from</span> <span class="nn">airflow.contrib.hooks.aws_hook</span> <span class="k">import</span> <span class="n">AwsHook</span>
+
+
+<div class="viewcode-block" id="EmrHook"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.emr_hook.EmrHook">[docs]</a><span class="k">class</span> <span class="nc">EmrHook</span><span class="p">(</span><span class="n">AwsHook</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Interact with AWS EMR. emr_conn_id is only neccessary for using the create_job_flow method.</span>
+<span class="sd"> """</span>
+
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">emr_conn_id</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="bp">self</span><span class="o">.</span><span class="n">emr_conn_id</span> <span class="o">=</span> <span class="n">emr_conn_id</span>
+ <span class="nb">super</span><span class="p">(</span><span class="n">EmrHook</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="k">def</span> <span class="nf">get_conn</span><span class="p">(</span><span class="bp">self</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="bp">self</span><span class="o">.</span><span class="n">get_client_type</span><span class="p">(</span><span class="s1">'emr'</span><span class="p">)</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">conn</span>
+
+ <span class="k">def</span> <span class="nf">create_job_flow</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">job_flow_overrides</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Creates a job flow using the config from the EMR connection.</span>
+<span class="sd"> Keys of the json extra hash may have the arguments of the boto3 run_job_flow method.</span>
+<span class="sd"> Overrides for this config may be passed as the job_flow_overrides.</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">emr_conn_id</span><span class="p">:</span>
+ <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s1">'emr_conn_id must be present to use create_job_flow'</span><span class="p">)</span>
+
+ <span class="n">emr_conn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connection</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">emr_conn_id</span><span class="p">)</span>
+
+ <span class="n">config</span> <span class="o">=</span> <span class="n">emr_conn</span><span class="o">.</span><span class="n">extra_dejson</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span>
+ <span class="n">config</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">job_flow_overrides</span><span class="p">)</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">run_job_flow</span><span class="p">(</span>
+ <span class="n">Name</span><span class="o">=</span><span class="n">config</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'Name'</span><span class="p">),</span>
+ <span class="n">LogUri</span><span class="o">=</span><span class="n">config</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'LogUri'</span><span class="p">),</span>
+ <span class="n">ReleaseLabel</span><span class="o">=</span><span class="n">config</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'ReleaseLabel'</span><span class="p">),</span>
+ <span class="n">Instances</span><span class="o">=</span><span class="n">config</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'Instances'</span><span class="p">),</span>
+ <span class="n">Steps</span><span class="o">=</span><span class="n">config</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'Steps'</span><span class="p">,</span> <span class="p">[]),</span>
+ <span class="n">BootstrapActions</span><span class="o">=</span><span class="n">config</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'BootstrapActions'</span><span class="p">,</span> <span class="p">[]),</span>
+ <span class="n">Applications</span><span class="o">=</span><span class="n">config</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'Applications'</span><span class="p">),</span>
+ <span class="n">Configurations</span><span class="o">=</span><span class="n">config</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'Configurations'</span><span class="p">,</span> <span class="p">[]),</span>
+ <span class="n">VisibleToAllUsers</span><span class="o">=</span><span class="n">config</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'VisibleToAllUsers'</span><span class="p">),</span>
+ <span class="n">JobFlowRole</span><span class="o">=</span><span class="n">config</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'JobFlowRole'</span><span class="p">),</span>
+ <span class="n">ServiceRole</span><span class="o">=</span><span class="n">config</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'ServiceRole'</span><span class="p">),</span>
+ <span class="n">Tags</span><span class="o">=</span><span class="n">config</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'Tags'</span><span class="p">)</span>
+ <span class="p">)</span>
+
+ <span class="k">return</span> <span class="n">response</span></div>
+</pre></div>
+
+ </div>
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+
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+
+ <h1>Source code for airflow.contrib.hooks.gcp_dataflow_hook</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed under the Apache License, Version 2.0 (the "License");</span>
+<span class="c1"># you may not use this file except in compliance with the License.</span>
+<span class="c1"># You may obtain a copy of the License at</span>
+<span class="c1">#</span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1">#</span>
+<span class="c1"># Unless required by applicable law or agreed to in writing, software</span>
+<span class="c1"># distributed under the License is distributed on an "AS IS" BASIS,</span>
+<span class="c1"># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
+<span class="c1"># See the License for the specific language governing permissions and</span>
+<span class="c1"># limitations under the License.</span>
+<span class="kn">import</span> <span class="nn">select</span>
+<span class="kn">import</span> <span class="nn">subprocess</span>
+<span class="kn">import</span> <span class="nn">time</span>
+<span class="kn">import</span> <span class="nn">uuid</span>
+
+<span class="kn">from</span> <span class="nn">apiclient.discovery</span> <span class="k">import</span> <span class="n">build</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="kn">from</span> <span class="nn">airflow.utils.log.logging_mixin</span> <span class="k">import</span> <span class="n">LoggingMixin</span>
+
+
+<span class="k">class</span> <span class="nc">_DataflowJob</span><span class="p">(</span><span class="n">LoggingMixin</span><span class="p">):</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dataflow</span><span class="p">,</span> <span class="n">project_number</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_dataflow</span> <span class="o">=</span> <span class="n">dataflow</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_project_number</span> <span class="o">=</span> <span class="n">project_number</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_job_name</span> <span class="o">=</span> <span class="n">name</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_job_id</span> <span class="o">=</span> <span class="kc">None</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_job</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_job</span><span class="p">()</span>
+
+ <span class="k">def</span> <span class="nf">_get_job_id_from_name</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="n">jobs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_dataflow</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">jobs</span><span class="p">()</span><span class="o">.</span><span class="n">list</span><span class="p">(</span>
+ <span class="n">projectId</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">_project_number</span>
+ <span class="p">)</span><span class="o">.</span><span class="n">execute</span><span class="p">()</span>
+ <span class="k">for</span> <span class="n">job</span> <span class="ow">in</span> <span class="n">jobs</span><span class="p">[</span><span class="s1">'jobs'</span><span class="p">]:</span>
+ <span class="k">if</span> <span class="n">job</span><span class="p">[</span><span class="s1">'name'</span><span class="p">]</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">_job_name</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_job_id</span> <span class="o">=</span> <span class="n">job</span><span class="p">[</span><span class="s1">'id'</span><span class="p">]</span>
+ <span class="k">return</span> <span class="n">job</span>
+ <span class="k">return</span> <span class="kc">None</span>
+
+ <span class="k">def</span> <span class="nf">_get_job</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_job_id</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
+ <span class="n">job</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_job_id_from_name</span><span class="p">()</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">job</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_dataflow</span><span class="o">.</span><span class="n">projects</span><span class="p">()</span><span class="o">.</span><span class="n">jobs</span><span class="p">()</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">projectId</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">_project_number</span><span class="p">,</span>
+ <span class="n">jobId</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">_job_id</span><span class="p">)</span><span class="o">.</span><span class="n">execute</span><span class="p">()</span>
+ <span class="k">if</span> <span class="s1">'currentState'</span> <span class="ow">in</span> <span class="n">job</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">'Google Cloud DataFlow job </span><span class="si">%s</span><span class="s1"> is </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span>
+ <span class="n">job</span><span class="p">[</span><span class="s1">'name'</span><span class="p">],</span> <span class="n">job</span><span class="p">[</span><span class="s1">'currentState'</span><span class="p">]</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">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span>
+ <span class="s1">'Google Cloud DataFlow with job_id </span><span class="si">%s</span><span class="s1"> has name </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_job_id</span><span class="p">,</span> <span class="n">job</span><span class="p">[</span><span class="s1">'name'</span><span class="p">]</span>
+ <span class="p">)</span>
+ <span class="k">return</span> <span class="n">job</span>
+
+ <span class="k">def</span> <span class="nf">wait_for_done</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">while</span> <span class="kc">True</span><span class="p">:</span>
+ <span class="k">if</span> <span class="s1">'currentState'</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_job</span><span class="p">:</span>
+ <span class="k">if</span> <span class="s1">'JOB_STATE_DONE'</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">_job</span><span class="p">[</span><span class="s1">'currentState'</span><span class="p">]:</span>
+ <span class="k">return</span> <span class="kc">True</span>
+ <span class="k">elif</span> <span class="s1">'JOB_STATE_FAILED'</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">_job</span><span class="p">[</span><span class="s1">'currentState'</span><span class="p">]:</span>
+ <span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s2">"Google Cloud Dataflow job </span><span class="si">{}</span><span class="s2"> has failed."</span><span class="o">.</span><span class="n">format</span><span class="p">(</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_job</span><span class="p">[</span><span class="s1">'name'</span><span class="p">]))</span>
+ <span class="k">elif</span> <span class="s1">'JOB_STATE_CANCELLED'</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">_job</span><span class="p">[</span><span class="s1">'currentState'</span><span class="p">]:</span>
+ <span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s2">"Google Cloud Dataflow job </span><span class="si">{}</span><span class="s2"> was cancelled."</span><span class="o">.</span><span class="n">format</span><span class="p">(</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_job</span><span class="p">[</span><span class="s1">'name'</span><span class="p">]))</span>
+ <span class="k">elif</span> <span class="s1">'JOB_STATE_RUNNING'</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">_job</span><span class="p">[</span><span class="s1">'currentState'</span><span class="p">]:</span>
+ <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span>
+ <span class="k">elif</span> <span class="s1">'JOB_STATE_PENDING'</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">_job</span><span class="p">[</span><span class="s1">'currentState'</span><span class="p">]:</span>
+ <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mi">15</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">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_job</span><span class="p">))</span>
+ <span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span>
+ <span class="s2">"Google Cloud Dataflow job </span><span class="si">{}</span><span class="s2"> was unknown state: </span><span class="si">{}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_job</span><span class="p">[</span><span class="s1">'name'</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">_job</span><span class="p">[</span><span class="s1">'currentState'</span><span class="p">]))</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mi">15</span><span class="p">)</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">_job</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_job</span><span class="p">()</span>
+
+ <span class="k">def</span> <span class="nf">get</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_job</span>
+
+
+<span class="k">class</span> <span class="nc">_Dataflow</span><span class="p">(</span><span class="n">LoggingMixin</span><span class="p">):</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">cmd</span><span class="p">):</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_proc</span> <span class="o">=</span> <span class="n">subprocess</span><span class="o">.</span><span class="n">Popen</span><span class="p">(</span><span class="n">cmd</span><span class="p">,</span> <span class="n">shell</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">stdout</span><span class="o">=</span><span class="n">subprocess</span><span class="o">.</span><span class="n">PIPE</span><span class="p">,</span>
+ <span class="n">stderr</span><span class="o">=</span><span class="n">subprocess</span><span class="o">.</span><span class="n">PIPE</span><span class="p">)</span>
+
+ <span class="k">def</span> <span class="nf">_line</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">fd</span><span class="p">):</span>
+ <span class="k">if</span> <span class="n">fd</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">_proc</span><span class="o">.</span><span class="n">stderr</span><span class="o">.</span><span class="n">fileno</span><span class="p">():</span>
+ <span class="n">line</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_proc</span><span class="o">.</span><span class="n">stderr</span><span class="o">.</span><span class="n">readline</span><span class="p">()</span>
+ <span class="k">return</span> <span class="n">line</span>
+ <span class="k">if</span> <span class="n">fd</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">_proc</span><span class="o">.</span><span class="n">stdout</span><span class="o">.</span><span class="n">fileno</span><span class="p">():</span>
+ <span class="n">line</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_proc</span><span class="o">.</span><span class="n">stdout</span><span class="o">.</span><span class="n">readline</span><span class="p">()</span>
+ <span class="k">return</span> <span class="n">line</span>
+
+ <span class="nd">@staticmethod</span>
+ <span class="k">def</span> <span class="nf">_extract_job</span><span class="p">(</span><span class="n">line</span><span class="p">):</span>
+ <span class="k">if</span> <span class="n">line</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
+ <span class="k">if</span> <span class="n">line</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="s2">"Submitted job: "</span><span class="p">):</span>
+ <span class="k">return</span> <span class="n">line</span><span class="p">[</span><span class="mi">15</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span>
+
+ <span class="k">def</span> <span class="nf">wait_for_done</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="n">reads</span> <span class="o">=</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">_proc</span><span class="o">.</span><span class="n">stderr</span><span class="o">.</span><span class="n">fileno</span><span class="p">(),</span> <span class="bp">self</span><span class="o">.</span><span class="n">_proc</span><span class="o">.</span><span class="n">stdout</span><span class="o">.</span><span class="n">fileno</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">"Start waiting for DataFlow process to complete."</span><span class="p">)</span>
+ <span class="k">while</span> <span class="bp">self</span><span class="o">.</span><span class="n">_proc</span><span class="o">.</span><span class="n">poll</span><span class="p">()</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
+ <span class="n">ret</span> <span class="o">=</span> <span class="n">select</span><span class="o">.</span><span class="n">select</span><span class="p">(</span><span class="n">reads</span><span class="p">,</span> <span class="p">[],</span> <span class="p">[],</span> <span class="mi">5</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">ret</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
+ <span class="k">for</span> <span class="n">fd</span> <span class="ow">in</span> <span class="n">ret</span><span class="p">[</span><span class="mi">0</span><span class="p">]:</span>
+ <span class="n">line</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_line</span><span class="p">(</span><span class="n">fd</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="n">line</span><span class="p">[:</span><span class="o">-</span><span class="mi">1</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">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Waiting for DataFlow process to complete."</span><span class="p">)</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_proc</span><span class="o">.</span><span class="n">returncode</span> <span class="ow">is</span> <span class="ow">not</span> <span class="mi">0</span><span class="p">:</span>
+ <span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="s2">"DataFlow failed with return code </span><span class="si">{}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_proc</span><span class="o">.</span><span class="n">returncode</span><span class="p">))</span>
+
+
+<div class="viewcode-block" id="DataFlowHook"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.gcp_dataflow_hook.DataFlowHook">[docs]</a><span class="k">class</span> <span class="nc">DataFlowHook</span><span class="p">(</span><span class="n">GoogleCloudBaseHook</span><span class="p">):</span>
+
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span>
+ <span class="n">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">DataFlowHook</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="DataFlowHook.get_conn"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.hooks.gcp_dataflow_hook.DataFlowHook.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"> Returns a Google Cloud Storage service object.</span>
+<span class="sd"> """</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="k">return</span> <span class="n">build</span><span class="p">(</span><span class="s1">'dataflow'</span><span class="p">,</span> <span class="s1">'v1b3'</span><span class="p">,</span> <span class="n">http</span><span class="o">=</span><span class="n">http_authorized</span><span class="p">)</span></div>
+
+ <span class="k">def</span> <span class="nf">_start_dataflow</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">task_id</span><span class="p">,</span> <span class="n">variables</span><span class="p">,</span> <span class="n">dataflow</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">command_prefix</span><span class="p">):</span>
+ <span class="n">cmd</span> <span class="o">=</span> <span class="n">command_prefix</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">_build_cmd</span><span class="p">(</span><span class="n">task_id</span><span class="p">,</span> <span class="n">variables</span><span class="p">,</span> <span class="n">dataflow</span><span class="p">)</span>
+ <span class="n">_Dataflow</span><span class="p">(</span><span class="n">cmd</span><span class="p">)</span><span class="o">.</span><span class="n">wait_for_done</span><span class="p">()</span>
+ <span class="n">_DataflowJob</span><span class="p">(</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">(),</span> <span class="n">variables</span><span class="p">[</span><span class="s1">'project'</span><span class="p">],</span> <span class="n">name</span><span class="p">)</span><span class="o">.</span><span class="n">wait_for_done</span><span class="p">()</span>
+
+ <span class="k">def</span> <span class="nf">start_java_dataflow</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">task_id</span><span class="p">,</span> <span class="n">variables</span><span class="p">,</span> <span class="n">dataflow</span><span class="p">):</span>
+ <span class="n">name</span> <span class="o">=</span> <span class="n">task_id</span> <span class="o">+</span> <span class="s2">"-"</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">uuid</span><span class="o">.</span><span class="n">uuid1</span><span class="p">())[:</span><span class="mi">8</span><span class="p">]</span>
+ <span class="n">variables</span><span class="p">[</span><span class="s1">'jobName'</span><span class="p">]</span> <span class="o">=</span> <span class="n">name</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_start_dataflow</span><span class="p">(</span>
+ <span class="n">task_id</span><span class="p">,</span> <span class="n">variables</span><span class="p">,</span> <span class="n">dataflow</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="p">[</span><span class="s2">"java"</span><span class="p">,</span> <span class="s2">"-jar"</span><span class="p">])</span>
+
+ <span class="k">def</span> <span class="nf">start_python_dataflow</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">task_id</span><span class="p">,</span> <span class="n">variables</span><span class="p">,</span> <span class="n">dataflow</span><span class="p">,</span> <span class="n">py_options</span><span class="p">):</span>
+ <span class="n">name</span> <span class="o">=</span> <span class="n">task_id</span> <span class="o">+</span> <span class="s2">"-"</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">uuid</span><span class="o">.</span><span class="n">uuid1</span><span class="p">())[:</span><span class="mi">8</span><span class="p">]</span>
+ <span class="n">variables</span><span class="p">[</span><span class="s2">"job_name"</span><span class="p">]</span> <span class="o">=</span> <span class="n">name</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">_start_dataflow</span><span class="p">(</span>
+ <span class="n">task_id</span><span class="p">,</span> <span class="n">variables</span><span class="p">,</span> <span class="n">dataflow</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="p">[</span><span class="s2">"python"</span><span class="p">]</span> <span class="o">+</span> <span class="n">py_options</span><span class="p">)</span>
+
+ <span class="k">def</span> <span class="nf">_build_cmd</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">task_id</span><span class="p">,</span> <span class="n">variables</span><span class="p">,</span> <span class="n">dataflow</span><span class="p">):</span>
+ <span class="n">command</span> <span class="o">=</span> <span class="p">[</span><span class="n">dataflow</span><span class="p">,</span> <span class="s2">"--runner=DataflowRunner"</span><span class="p">]</span>
+ <span class="k">if</span> <span class="n">variables</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
+ <span class="k">for</span> <span class="n">attr</span><span class="p">,</span> <span class="n">value</span> <span class="ow">in</span> <span class="n">variables</span><span class="o">.</span><span class="n">iteritems</span><span class="p">():</span>
+ <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">"--"</span> <span class="o">+</span> <span class="n">attr</span> <span class="o">+</span> <span class="s2">"="</span> <span class="o">+</span> <span class="n">value</span><span class="p">)</span>
+ <span class="k">return</span> <span class="n">command</span></div>
+</pre></div>
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