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<h1>Source code for airflow.contrib.example_dags.example_gcp_speech</h1><div class="highlight"><pre>
<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
<span class="c1">#</span>
<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
<span class="c1"># distributed with this work for additional information</span>
<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
<span class="c1"># &quot;License&quot;); you may not use this file except in compliance</span>
<span class="c1"># with the License. You may obtain a copy of the License at</span>
<span class="c1">#</span>
<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
<span class="c1">#</span>
<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
<span class="c1"># software distributed under the License is distributed on an</span>
<span class="c1"># &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
<span class="c1"># KIND, either express or implied. See the License for the</span>
<span class="c1"># specific language governing permissions and limitations</span>
<span class="c1"># under the License.</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd">Example Airflow DAG that runs speech synthesizing and stores output in Google Cloud Storage</span>
<span class="sd">This DAG relies on the following OS environment variables</span>
<span class="sd">* GCP_PROJECT_ID - Google Cloud Platform project for the Cloud SQL instance.</span>
<span class="sd">* GCP_SPEECH_TEST_BUCKET - Name of the bucket in which the output file should be stored.</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">from</span> <span class="nn">airflow.utils</span> <span class="k">import</span> <span class="n">dates</span>
<span class="kn">from</span> <span class="nn">airflow</span> <span class="k">import</span> <span class="n">models</span>
<span class="kn">from</span> <span class="nn">airflow.contrib.operators.gcp_text_to_speech_operator</span> <span class="k">import</span> <span class="n">GcpTextToSpeechSynthesizeOperator</span>
<span class="kn">from</span> <span class="nn">airflow.contrib.operators.gcp_speech_to_text_operator</span> <span class="k">import</span> <span class="n">GcpSpeechToTextRecognizeSpeechOperator</span>
<span class="kn">from</span> <span class="nn">airflow.contrib.operators.gcp_translate_speech_operator</span> <span class="k">import</span> <span class="n">GcpTranslateSpeechOperator</span>
<span class="c1"># [START howto_operator_text_to_speech_env_variables]</span>
<span class="n">GCP_PROJECT_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;GCP_PROJECT_ID&quot;</span><span class="p">,</span> <span class="s2">&quot;example-project&quot;</span><span class="p">)</span>
<span class="n">BUCKET_NAME</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;GCP_SPEECH_TEST_BUCKET&quot;</span><span class="p">,</span> <span class="s2">&quot;gcp-speech-test-bucket&quot;</span><span class="p">)</span>
<span class="c1"># [END howto_operator_text_to_speech_env_variables]</span>
<span class="c1"># [START howto_operator_text_to_speech_gcp_filename]</span>
<span class="n">FILENAME</span> <span class="o">=</span> <span class="s2">&quot;gcp-speech-test-file&quot;</span>
<span class="c1"># [END howto_operator_text_to_speech_gcp_filename]</span>
<span class="c1"># [START howto_operator_text_to_speech_api_arguments]</span>
<span class="n">INPUT</span> <span class="o">=</span> <span class="p">{</span><span class="s2">&quot;text&quot;</span><span class="p">:</span> <span class="s2">&quot;Sample text for demo purposes&quot;</span><span class="p">}</span>
<span class="n">VOICE</span> <span class="o">=</span> <span class="p">{</span><span class="s2">&quot;language_code&quot;</span><span class="p">:</span> <span class="s2">&quot;en-US&quot;</span><span class="p">,</span> <span class="s2">&quot;ssml_gender&quot;</span><span class="p">:</span> <span class="s2">&quot;FEMALE&quot;</span><span class="p">}</span>
<span class="n">AUDIO_CONFIG</span> <span class="o">=</span> <span class="p">{</span><span class="s2">&quot;audio_encoding&quot;</span><span class="p">:</span> <span class="s2">&quot;LINEAR16&quot;</span><span class="p">}</span>
<span class="c1"># [END howto_operator_text_to_speech_api_arguments]</span>
<span class="c1"># [START howto_operator_speech_to_text_api_arguments]</span>
<span class="n">CONFIG</span> <span class="o">=</span> <span class="p">{</span><span class="s2">&quot;encoding&quot;</span><span class="p">:</span> <span class="s2">&quot;LINEAR16&quot;</span><span class="p">,</span> <span class="s2">&quot;language_code&quot;</span><span class="p">:</span> <span class="s2">&quot;en_US&quot;</span><span class="p">}</span>
<span class="n">AUDIO</span> <span class="o">=</span> <span class="p">{</span><span class="s2">&quot;uri&quot;</span><span class="p">:</span> <span class="s2">&quot;gs://</span><span class="si">{bucket}</span><span class="s2">/</span><span class="si">{object}</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">bucket</span><span class="o">=</span><span class="n">BUCKET_NAME</span><span class="p">,</span> <span class="nb">object</span><span class="o">=</span><span class="n">FILENAME</span><span class="p">)}</span>
<span class="c1"># [END howto_operator_speech_to_text_api_arguments]</span>
<span class="c1"># [START howto_operator_translate_speech_arguments]</span>
<span class="n">TARGET_LANGUAGE</span> <span class="o">=</span> <span class="s1">&#39;pl&#39;</span>
<span class="n">FORMAT</span> <span class="o">=</span> <span class="s1">&#39;text&#39;</span>
<span class="n">MODEL</span> <span class="o">=</span> <span class="s1">&#39;base&#39;</span>
<span class="n">SOURCE_LANGUAGE</span> <span class="o">=</span> <span class="kc">None</span>
<span class="c1"># [END howto_operator_translate_speech_arguments]</span>
<span class="n">default_args</span> <span class="o">=</span> <span class="p">{</span><span class="s2">&quot;start_date&quot;</span><span class="p">:</span> <span class="n">dates</span><span class="o">.</span><span class="n">days_ago</span><span class="p">(</span><span class="mi">1</span><span class="p">)}</span>
<span class="k">with</span> <span class="n">models</span><span class="o">.</span><span class="n">DAG</span><span class="p">(</span>
<span class="s2">&quot;example_gcp_speech&quot;</span><span class="p">,</span> <span class="n">default_args</span><span class="o">=</span><span class="n">default_args</span><span class="p">,</span> <span class="n">schedule_interval</span><span class="o">=</span><span class="kc">None</span> <span class="c1"># Override to match your needs</span>
<span class="p">)</span> <span class="k">as</span> <span class="n">dag</span><span class="p">:</span>
<span class="c1"># [START howto_operator_text_to_speech_synthesize]</span>
<span class="n">text_to_speech_synthesize_task</span> <span class="o">=</span> <span class="n">GcpTextToSpeechSynthesizeOperator</span><span class="p">(</span>
<span class="n">project_id</span><span class="o">=</span><span class="n">GCP_PROJECT_ID</span><span class="p">,</span>
<span class="n">input_data</span><span class="o">=</span><span class="n">INPUT</span><span class="p">,</span>
<span class="n">voice</span><span class="o">=</span><span class="n">VOICE</span><span class="p">,</span>
<span class="n">audio_config</span><span class="o">=</span><span class="n">AUDIO_CONFIG</span><span class="p">,</span>
<span class="n">target_bucket_name</span><span class="o">=</span><span class="n">BUCKET_NAME</span><span class="p">,</span>
<span class="n">target_filename</span><span class="o">=</span><span class="n">FILENAME</span><span class="p">,</span>
<span class="n">task_id</span><span class="o">=</span><span class="s2">&quot;text_to_speech_synthesize_task&quot;</span><span class="p">,</span>
<span class="p">)</span>
<span class="c1"># [END howto_operator_text_to_speech_synthesize]</span>
<span class="c1"># [START howto_operator_speech_to_text_recognize]</span>
<span class="n">speech_to_text_recognize_task</span> <span class="o">=</span> <span class="n">GcpSpeechToTextRecognizeSpeechOperator</span><span class="p">(</span>
<span class="n">project_id</span><span class="o">=</span><span class="n">GCP_PROJECT_ID</span><span class="p">,</span> <span class="n">config</span><span class="o">=</span><span class="n">CONFIG</span><span class="p">,</span> <span class="n">audio</span><span class="o">=</span><span class="n">AUDIO</span><span class="p">,</span> <span class="n">task_id</span><span class="o">=</span><span class="s2">&quot;speech_to_text_recognize_task&quot;</span>
<span class="p">)</span>
<span class="c1"># [END howto_operator_speech_to_text_recognize]</span>
<span class="n">text_to_speech_synthesize_task</span> <span class="o">&gt;&gt;</span> <span class="n">speech_to_text_recognize_task</span>
<span class="c1"># [START howto_operator_translate_speech]</span>
<span class="n">translate_speech_task</span> <span class="o">=</span> <span class="n">GcpTranslateSpeechOperator</span><span class="p">(</span>
<span class="n">project_id</span><span class="o">=</span><span class="n">GCP_PROJECT_ID</span><span class="p">,</span>
<span class="n">audio</span><span class="o">=</span><span class="n">AUDIO</span><span class="p">,</span>
<span class="n">config</span><span class="o">=</span><span class="n">CONFIG</span><span class="p">,</span>
<span class="n">target_language</span><span class="o">=</span><span class="n">TARGET_LANGUAGE</span><span class="p">,</span>
<span class="n">format_</span><span class="o">=</span><span class="n">FORMAT</span><span class="p">,</span>
<span class="n">source_language</span><span class="o">=</span><span class="n">SOURCE_LANGUAGE</span><span class="p">,</span>
<span class="n">model</span><span class="o">=</span><span class="n">MODEL</span><span class="p">,</span>
<span class="n">task_id</span><span class="o">=</span><span class="s1">&#39;translate_speech_task&#39;</span>
<span class="p">)</span>
<span class="c1"># [END howto_operator_translate_speech]</span>
<span class="n">text_to_speech_synthesize_task</span> <span class="o">&gt;&gt;</span> <span class="n">translate_speech_task</span>
</pre></div>
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