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<h1>Source code for airflow.contrib.operators.cassandra_to_gcs</h1><div class="highlight"><pre>
<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
<span class="c1">#</span>
<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
<span class="c1"># distributed with this work for additional information</span>
<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
<span class="c1"># &quot;License&quot;); you may not use this file except in compliance</span>
<span class="c1"># with the License. You may obtain a copy of the License at</span>
<span class="c1">#</span>
<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
<span class="c1">#</span>
<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
<span class="c1"># software distributed under the License is distributed on an</span>
<span class="c1"># &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
<span class="c1"># KIND, either express or implied. See the License for the</span>
<span class="c1"># specific language governing permissions and limitations</span>
<span class="c1"># under the License.</span>
<span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">unicode_literals</span>
<span class="kn">import</span> <span class="nn">json</span>
<span class="kn">from</span> <span class="nn">builtins</span> <span class="k">import</span> <span class="nb">str</span>
<span class="kn">from</span> <span class="nn">base64</span> <span class="k">import</span> <span class="n">b64encode</span>
<span class="kn">from</span> <span class="nn">cassandra.util</span> <span class="k">import</span> <span class="n">Date</span><span class="p">,</span> <span class="n">Time</span><span class="p">,</span> <span class="n">SortedSet</span><span class="p">,</span> <span class="n">OrderedMapSerializedKey</span>
<span class="kn">from</span> <span class="nn">datetime</span> <span class="k">import</span> <span class="n">datetime</span>
<span class="kn">from</span> <span class="nn">decimal</span> <span class="k">import</span> <span class="n">Decimal</span>
<span class="kn">from</span> <span class="nn">six</span> <span class="k">import</span> <span class="n">text_type</span><span class="p">,</span> <span class="n">binary_type</span><span class="p">,</span> <span class="n">PY3</span>
<span class="kn">from</span> <span class="nn">tempfile</span> <span class="k">import</span> <span class="n">NamedTemporaryFile</span>
<span class="kn">from</span> <span class="nn">uuid</span> <span class="k">import</span> <span class="n">UUID</span>
<span class="kn">from</span> <span class="nn">airflow.contrib.hooks.gcs_hook</span> <span class="k">import</span> <span class="n">GoogleCloudStorageHook</span>
<span class="kn">from</span> <span class="nn">airflow.contrib.hooks.cassandra_hook</span> <span class="k">import</span> <span class="n">CassandraHook</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.models</span> <span class="k">import</span> <span class="n">BaseOperator</span>
<span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="k">import</span> <span class="n">apply_defaults</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator">[docs]</a><span class="k">class</span> <span class="nc">CassandraToGoogleCloudStorageOperator</span><span class="p">(</span><span class="n">BaseOperator</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Copy data from Cassandra to Google cloud storage in JSON format</span>
<span class="sd"> Note: Arrays of arrays are not supported.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.template_fields"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.template_fields">[docs]</a> <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">&#39;cql&#39;</span><span class="p">,</span> <span class="s1">&#39;bucket&#39;</span><span class="p">,</span> <span class="s1">&#39;filename&#39;</span><span class="p">,</span> <span class="s1">&#39;schema_filename&#39;</span><span class="p">,)</span></div>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.template_ext"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.template_ext">[docs]</a> <span class="n">template_ext</span> <span class="o">=</span> <span class="p">(</span><span class="s1">&#39;.cql&#39;</span><span class="p">,)</span></div>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.ui_color"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.ui_color">[docs]</a> <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">&#39;#a0e08c&#39;</span></div>
<span class="nd">@apply_defaults</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span>
<span class="n">cql</span><span class="p">,</span>
<span class="n">bucket</span><span class="p">,</span>
<span class="n">filename</span><span class="p">,</span>
<span class="n">schema_filename</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
<span class="n">approx_max_file_size_bytes</span><span class="o">=</span><span class="mi">1900000000</span><span class="p">,</span>
<span class="n">cassandra_conn_id</span><span class="o">=</span><span class="s1">&#39;cassandra_default&#39;</span><span class="p">,</span>
<span class="n">google_cloud_storage_conn_id</span><span class="o">=</span><span class="s1">&#39;google_cloud_default&#39;</span><span class="p">,</span>
<span class="n">delegate_to</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
<span class="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="sd">&quot;&quot;&quot;</span>
<span class="sd"> :param cql: The CQL to execute on the Cassandra table.</span>
<span class="sd"> :type cql: str</span>
<span class="sd"> :param bucket: The bucket to upload to.</span>
<span class="sd"> :type bucket: str</span>
<span class="sd"> :param filename: The filename to use as the object name when uploading</span>
<span class="sd"> to Google cloud storage. A {} should be specified in the filename</span>
<span class="sd"> to allow the operator to inject file numbers in cases where the</span>
<span class="sd"> file is split due to size.</span>
<span class="sd"> :type filename: str</span>
<span class="sd"> :param schema_filename: If set, the filename to use as the object name</span>
<span class="sd"> when uploading a .json file containing the BigQuery schema fields</span>
<span class="sd"> for the table that was dumped from MySQL.</span>
<span class="sd"> :type schema_filename: str</span>
<span class="sd"> :param approx_max_file_size_bytes: This operator supports the ability</span>
<span class="sd"> to split large table dumps into multiple files (see notes in the</span>
<span class="sd"> filenamed param docs above). Google cloud storage allows for files</span>
<span class="sd"> to be a maximum of 4GB. This param allows developers to specify the</span>
<span class="sd"> file size of the splits.</span>
<span class="sd"> :type approx_max_file_size_bytes: long</span>
<span class="sd"> :param cassandra_conn_id: Reference to a specific Cassandra hook.</span>
<span class="sd"> :type cassandra_conn_id: str</span>
<span class="sd"> :param google_cloud_storage_conn_id: Reference to a specific Google</span>
<span class="sd"> cloud storage hook.</span>
<span class="sd"> :type google_cloud_storage_conn_id: str</span>
<span class="sd"> :param delegate_to: The account to impersonate, if any. For this to</span>
<span class="sd"> work, the service account making the request must have domain-wide</span>
<span class="sd"> delegation enabled.</span>
<span class="sd"> :type delegate_to: str</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="nb">super</span><span class="p">(</span><span class="n">CassandraToGoogleCloudStorageOperator</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">cql</span> <span class="o">=</span> <span class="n">cql</span>
<span class="bp">self</span><span class="o">.</span><span class="n">bucket</span> <span class="o">=</span> <span class="n">bucket</span>
<span class="bp">self</span><span class="o">.</span><span class="n">filename</span> <span class="o">=</span> <span class="n">filename</span>
<span class="bp">self</span><span class="o">.</span><span class="n">schema_filename</span> <span class="o">=</span> <span class="n">schema_filename</span>
<span class="bp">self</span><span class="o">.</span><span class="n">approx_max_file_size_bytes</span> <span class="o">=</span> <span class="n">approx_max_file_size_bytes</span>
<span class="bp">self</span><span class="o">.</span><span class="n">cassandra_conn_id</span> <span class="o">=</span> <span class="n">cassandra_conn_id</span>
<span class="bp">self</span><span class="o">.</span><span class="n">google_cloud_storage_conn_id</span> <span class="o">=</span> <span class="n">google_cloud_storage_conn_id</span>
<span class="bp">self</span><span class="o">.</span><span class="n">delegate_to</span> <span class="o">=</span> <span class="n">delegate_to</span>
<span class="bp">self</span><span class="o">.</span><span class="n">hook</span> <span class="o">=</span> <span class="kc">None</span>
<span class="c1"># Default Cassandra to BigQuery type mapping</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.CQL_TYPE_MAP"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.CQL_TYPE_MAP">[docs]</a> <span class="n">CQL_TYPE_MAP</span> <span class="o">=</span> <span class="p">{</span>
<span class="s1">&#39;BytesType&#39;</span><span class="p">:</span> <span class="s1">&#39;BYTES&#39;</span><span class="p">,</span>
<span class="s1">&#39;DecimalType&#39;</span><span class="p">:</span> <span class="s1">&#39;FLOAT&#39;</span><span class="p">,</span>
<span class="s1">&#39;UUIDType&#39;</span><span class="p">:</span> <span class="s1">&#39;BYTES&#39;</span><span class="p">,</span>
<span class="s1">&#39;BooleanType&#39;</span><span class="p">:</span> <span class="s1">&#39;BOOL&#39;</span><span class="p">,</span>
<span class="s1">&#39;ByteType&#39;</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="s1">&#39;AsciiType&#39;</span><span class="p">:</span> <span class="s1">&#39;STRING&#39;</span><span class="p">,</span>
<span class="s1">&#39;FloatType&#39;</span><span class="p">:</span> <span class="s1">&#39;FLOAT&#39;</span><span class="p">,</span>
<span class="s1">&#39;DoubleType&#39;</span><span class="p">:</span> <span class="s1">&#39;FLOAT&#39;</span><span class="p">,</span>
<span class="s1">&#39;LongType&#39;</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="s1">&#39;Int32Type&#39;</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="s1">&#39;IntegerType&#39;</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="s1">&#39;InetAddressType&#39;</span><span class="p">:</span> <span class="s1">&#39;STRING&#39;</span><span class="p">,</span>
<span class="s1">&#39;CounterColumnType&#39;</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="s1">&#39;DateType&#39;</span><span class="p">:</span> <span class="s1">&#39;TIMESTAMP&#39;</span><span class="p">,</span>
<span class="s1">&#39;SimpleDateType&#39;</span><span class="p">:</span> <span class="s1">&#39;DATE&#39;</span><span class="p">,</span>
<span class="s1">&#39;TimestampType&#39;</span><span class="p">:</span> <span class="s1">&#39;TIMESTAMP&#39;</span><span class="p">,</span>
<span class="s1">&#39;TimeUUIDType&#39;</span><span class="p">:</span> <span class="s1">&#39;BYTES&#39;</span><span class="p">,</span>
<span class="s1">&#39;ShortType&#39;</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="s1">&#39;TimeType&#39;</span><span class="p">:</span> <span class="s1">&#39;TIME&#39;</span><span class="p">,</span>
<span class="s1">&#39;DurationType&#39;</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="s1">&#39;UTF8Type&#39;</span><span class="p">:</span> <span class="s1">&#39;STRING&#39;</span><span class="p">,</span>
<span class="s1">&#39;VarcharType&#39;</span><span class="p">:</span> <span class="s1">&#39;STRING&#39;</span><span class="p">,</span></div>
<span class="p">}</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.execute"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.execute">[docs]</a> <span class="k">def</span> <span class="nf">execute</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span>
<span class="n">cursor</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_query_cassandra</span><span class="p">()</span>
<span class="n">files_to_upload</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_write_local_data_files</span><span class="p">(</span><span class="n">cursor</span><span class="p">)</span>
<span class="c1"># If a schema is set, create a BQ schema JSON file.</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema_filename</span><span class="p">:</span>
<span class="n">files_to_upload</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_write_local_schema_file</span><span class="p">(</span><span class="n">cursor</span><span class="p">))</span>
<span class="c1"># Flush all files before uploading</span>
<span class="k">for</span> <span class="n">file_handle</span> <span class="ow">in</span> <span class="n">files_to_upload</span><span class="o">.</span><span class="n">values</span><span class="p">():</span>
<span class="n">file_handle</span><span class="o">.</span><span class="n">flush</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_upload_to_gcs</span><span class="p">(</span><span class="n">files_to_upload</span><span class="p">)</span>
<span class="c1"># Close all temp file handles.</span>
<span class="k">for</span> <span class="n">file_handle</span> <span class="ow">in</span> <span class="n">files_to_upload</span><span class="o">.</span><span class="n">values</span><span class="p">():</span>
<span class="n">file_handle</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
<span class="c1"># Close all sessions and connection associated with this Cassandra cluster</span>
<span class="bp">self</span><span class="o">.</span><span class="n">hook</span><span class="o">.</span><span class="n">shutdown_cluster</span><span class="p">()</span></div>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator._query_cassandra"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator._query_cassandra">[docs]</a> <span class="k">def</span> <span class="nf">_query_cassandra</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Queries cassandra and returns a cursor to the results.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="bp">self</span><span class="o">.</span><span class="n">hook</span> <span class="o">=</span> <span class="n">CassandraHook</span><span class="p">(</span><span class="n">cassandra_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">cassandra_conn_id</span><span class="p">)</span>
<span class="n">session</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">hook</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span>
<span class="n">cursor</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cql</span><span class="p">)</span>
<span class="k">return</span> <span class="n">cursor</span></div>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator._write_local_data_files"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator._write_local_data_files">[docs]</a> <span class="k">def</span> <span class="nf">_write_local_data_files</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">cursor</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Takes a cursor, and writes results to a local file.</span>
<span class="sd"> :return: A dictionary where keys are filenames to be used as object</span>
<span class="sd"> names in GCS, and values are file handles to local files that</span>
<span class="sd"> contain the data for the GCS objects.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">file_no</span> <span class="o">=</span> <span class="mi">0</span>
<span class="n">tmp_file_handle</span> <span class="o">=</span> <span class="n">NamedTemporaryFile</span><span class="p">(</span><span class="n">delete</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="n">tmp_file_handles</span> <span class="o">=</span> <span class="p">{</span><span class="bp">self</span><span class="o">.</span><span class="n">filename</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">file_no</span><span class="p">):</span> <span class="n">tmp_file_handle</span><span class="p">}</span>
<span class="k">for</span> <span class="n">row</span> <span class="ow">in</span> <span class="n">cursor</span><span class="p">:</span>
<span class="n">row_dict</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">generate_data_dict</span><span class="p">(</span><span class="n">row</span><span class="o">.</span><span class="n">_fields</span><span class="p">,</span> <span class="n">row</span><span class="p">)</span>
<span class="n">s</span> <span class="o">=</span> <span class="n">json</span><span class="o">.</span><span class="n">dumps</span><span class="p">(</span><span class="n">row_dict</span><span class="p">)</span>
<span class="k">if</span> <span class="n">PY3</span><span class="p">:</span>
<span class="n">s</span> <span class="o">=</span> <span class="n">s</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s1">&#39;utf-8&#39;</span><span class="p">)</span>
<span class="n">tmp_file_handle</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">s</span><span class="p">)</span>
<span class="c1"># Append newline to make dumps BigQuery compatible.</span>
<span class="n">tmp_file_handle</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="sa">b</span><span class="s1">&#39;</span><span class="se">\n</span><span class="s1">&#39;</span><span class="p">)</span>
<span class="k">if</span> <span class="n">tmp_file_handle</span><span class="o">.</span><span class="n">tell</span><span class="p">()</span> <span class="o">&gt;=</span> <span class="bp">self</span><span class="o">.</span><span class="n">approx_max_file_size_bytes</span><span class="p">:</span>
<span class="n">file_no</span> <span class="o">+=</span> <span class="mi">1</span>
<span class="n">tmp_file_handle</span> <span class="o">=</span> <span class="n">NamedTemporaryFile</span><span class="p">(</span><span class="n">delete</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="n">tmp_file_handles</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">filename</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">file_no</span><span class="p">)]</span> <span class="o">=</span> <span class="n">tmp_file_handle</span>
<span class="k">return</span> <span class="n">tmp_file_handles</span></div>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator._write_local_schema_file"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator._write_local_schema_file">[docs]</a> <span class="k">def</span> <span class="nf">_write_local_schema_file</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">cursor</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Takes a cursor, and writes the BigQuery schema for the results to a</span>
<span class="sd"> local file system.</span>
<span class="sd"> :return: A dictionary where key is a filename to be used as an object</span>
<span class="sd"> name in GCS, and values are file handles to local files that</span>
<span class="sd"> contains the BigQuery schema fields in .json format.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">schema</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">tmp_schema_file_handle</span> <span class="o">=</span> <span class="n">NamedTemporaryFile</span><span class="p">(</span><span class="n">delete</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="nb">type</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">cursor</span><span class="o">.</span><span class="n">column_names</span><span class="p">,</span> <span class="n">cursor</span><span class="o">.</span><span class="n">column_types</span><span class="p">):</span>
<span class="n">schema</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">generate_schema_dict</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="nb">type</span><span class="p">))</span>
<span class="n">json_serialized_schema</span> <span class="o">=</span> <span class="n">json</span><span class="o">.</span><span class="n">dumps</span><span class="p">(</span><span class="n">schema</span><span class="p">)</span>
<span class="k">if</span> <span class="n">PY3</span><span class="p">:</span>
<span class="n">json_serialized_schema</span> <span class="o">=</span> <span class="n">json_serialized_schema</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s1">&#39;utf-8&#39;</span><span class="p">)</span>
<span class="n">tmp_schema_file_handle</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">json_serialized_schema</span><span class="p">)</span>
<span class="k">return</span> <span class="p">{</span><span class="bp">self</span><span class="o">.</span><span class="n">schema_filename</span><span class="p">:</span> <span class="n">tmp_schema_file_handle</span><span class="p">}</span></div>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator._upload_to_gcs"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator._upload_to_gcs">[docs]</a> <span class="k">def</span> <span class="nf">_upload_to_gcs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">files_to_upload</span><span class="p">):</span>
<span class="n">hook</span> <span class="o">=</span> <span class="n">GoogleCloudStorageHook</span><span class="p">(</span>
<span class="n">google_cloud_storage_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">google_cloud_storage_conn_id</span><span class="p">,</span>
<span class="n">delegate_to</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">delegate_to</span><span class="p">)</span>
<span class="k">for</span> <span class="nb">object</span><span class="p">,</span> <span class="n">tmp_file_handle</span> <span class="ow">in</span> <span class="n">files_to_upload</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
<span class="n">hook</span><span class="o">.</span><span class="n">upload</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">bucket</span><span class="p">,</span> <span class="nb">object</span><span class="p">,</span> <span class="n">tmp_file_handle</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="s1">&#39;application/json&#39;</span><span class="p">)</span></div>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.generate_data_dict"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.generate_data_dict">[docs]</a> <span class="k">def</span> <span class="nf">generate_data_dict</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">names</span><span class="p">,</span> <span class="n">values</span><span class="p">):</span>
<span class="n">row_dict</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">value</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">names</span><span class="p">,</span> <span class="n">values</span><span class="p">):</span>
<span class="n">row_dict</span><span class="o">.</span><span class="n">update</span><span class="p">({</span><span class="n">name</span><span class="p">:</span> <span class="bp">cls</span><span class="o">.</span><span class="n">convert_value</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">value</span><span class="p">)})</span>
<span class="k">return</span> <span class="n">row_dict</span></div>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.convert_value"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.convert_value">[docs]</a> <span class="k">def</span> <span class="nf">convert_value</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">value</span><span class="p">:</span>
<span class="k">return</span> <span class="n">value</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="p">(</span><span class="n">text_type</span><span class="p">,</span> <span class="nb">int</span><span class="p">,</span> <span class="nb">float</span><span class="p">,</span> <span class="nb">bool</span><span class="p">,</span> <span class="nb">dict</span><span class="p">)):</span>
<span class="k">return</span> <span class="n">value</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">binary_type</span><span class="p">):</span>
<span class="k">return</span> <span class="n">b64encode</span><span class="p">(</span><span class="n">value</span><span class="p">)</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s1">&#39;ascii&#39;</span><span class="p">)</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">UUID</span><span class="p">):</span>
<span class="k">return</span> <span class="n">b64encode</span><span class="p">(</span><span class="n">value</span><span class="o">.</span><span class="n">bytes</span><span class="p">)</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s1">&#39;ascii&#39;</span><span class="p">)</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="p">(</span><span class="n">datetime</span><span class="p">,</span> <span class="n">Date</span><span class="p">)):</span>
<span class="k">return</span> <span class="nb">str</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">Decimal</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">float</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">Time</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">str</span><span class="p">(</span><span class="n">value</span><span class="p">)</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">&#39;.&#39;</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="p">(</span><span class="nb">list</span><span class="p">,</span> <span class="n">SortedSet</span><span class="p">)):</span>
<span class="k">return</span> <span class="bp">cls</span><span class="o">.</span><span class="n">convert_array_types</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span>
<span class="k">elif</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="s1">&#39;_fields&#39;</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">cls</span><span class="o">.</span><span class="n">convert_user_type</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="nb">tuple</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">cls</span><span class="o">.</span><span class="n">convert_tuple_type</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">OrderedMapSerializedKey</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">cls</span><span class="o">.</span><span class="n">convert_map_type</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s1">&#39;unexpected value: &#39;</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">value</span><span class="p">))</span></div>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.convert_array_types"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.convert_array_types">[docs]</a> <span class="k">def</span> <span class="nf">convert_array_types</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="k">return</span> <span class="p">[</span><span class="bp">cls</span><span class="o">.</span><span class="n">convert_value</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">nested_value</span><span class="p">)</span> <span class="k">for</span> <span class="n">nested_value</span> <span class="ow">in</span> <span class="n">value</span><span class="p">]</span></div>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.convert_user_type"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.convert_user_type">[docs]</a> <span class="k">def</span> <span class="nf">convert_user_type</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Converts a user type to RECORD that contains n fields, where n is the</span>
<span class="sd"> number of attributes. Each element in the user type class will be converted to its</span>
<span class="sd"> corresponding data type in BQ.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">names</span> <span class="o">=</span> <span class="n">value</span><span class="o">.</span><span class="n">_fields</span>
<span class="n">values</span> <span class="o">=</span> <span class="p">[</span><span class="bp">cls</span><span class="o">.</span><span class="n">convert_value</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">name</span><span class="p">))</span> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">names</span><span class="p">]</span>
<span class="k">return</span> <span class="bp">cls</span><span class="o">.</span><span class="n">generate_data_dict</span><span class="p">(</span><span class="n">names</span><span class="p">,</span> <span class="n">values</span><span class="p">)</span></div>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.convert_tuple_type"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.convert_tuple_type">[docs]</a> <span class="k">def</span> <span class="nf">convert_tuple_type</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Converts a tuple to RECORD that contains n fields, each will be converted</span>
<span class="sd"> to its corresponding data type in bq and will be named &#39;field_&lt;index&gt;&#39;, where</span>
<span class="sd"> index is determined by the order of the tuple elements defined in cassandra.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">names</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;field_&#39;</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">i</span><span class="p">)</span> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">value</span><span class="p">))]</span>
<span class="n">values</span> <span class="o">=</span> <span class="p">[</span><span class="bp">cls</span><span class="o">.</span><span class="n">convert_value</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">value</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">names</span><span class="p">,</span> <span class="n">value</span><span class="p">)]</span>
<span class="k">return</span> <span class="bp">cls</span><span class="o">.</span><span class="n">generate_data_dict</span><span class="p">(</span><span class="n">names</span><span class="p">,</span> <span class="n">values</span><span class="p">)</span></div>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.convert_map_type"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.convert_map_type">[docs]</a> <span class="k">def</span> <span class="nf">convert_map_type</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Converts a map to a repeated RECORD that contains two fields: &#39;key&#39; and &#39;value&#39;,</span>
<span class="sd"> each will be converted to its corresponding data type in BQ.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">converted_map</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">value</span><span class="o">.</span><span class="n">keys</span><span class="p">(),</span> <span class="n">value</span><span class="o">.</span><span class="n">values</span><span class="p">()):</span>
<span class="n">converted_map</span><span class="o">.</span><span class="n">append</span><span class="p">({</span>
<span class="s1">&#39;key&#39;</span><span class="p">:</span> <span class="bp">cls</span><span class="o">.</span><span class="n">convert_value</span><span class="p">(</span><span class="s1">&#39;key&#39;</span><span class="p">,</span> <span class="n">k</span><span class="p">),</span>
<span class="s1">&#39;value&#39;</span><span class="p">:</span> <span class="bp">cls</span><span class="o">.</span><span class="n">convert_value</span><span class="p">(</span><span class="s1">&#39;value&#39;</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
<span class="p">})</span>
<span class="k">return</span> <span class="n">converted_map</span></div>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.generate_schema_dict"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.generate_schema_dict">[docs]</a> <span class="k">def</span> <span class="nf">generate_schema_dict</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="nb">type</span><span class="p">):</span>
<span class="n">field_schema</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">()</span>
<span class="n">field_schema</span><span class="o">.</span><span class="n">update</span><span class="p">({</span><span class="s1">&#39;name&#39;</span><span class="p">:</span> <span class="n">name</span><span class="p">})</span>
<span class="n">field_schema</span><span class="o">.</span><span class="n">update</span><span class="p">({</span><span class="s1">&#39;type&#39;</span><span class="p">:</span> <span class="bp">cls</span><span class="o">.</span><span class="n">get_bq_type</span><span class="p">(</span><span class="nb">type</span><span class="p">)})</span>
<span class="n">field_schema</span><span class="o">.</span><span class="n">update</span><span class="p">({</span><span class="s1">&#39;mode&#39;</span><span class="p">:</span> <span class="bp">cls</span><span class="o">.</span><span class="n">get_bq_mode</span><span class="p">(</span><span class="nb">type</span><span class="p">)})</span>
<span class="n">fields</span> <span class="o">=</span> <span class="bp">cls</span><span class="o">.</span><span class="n">get_bq_fields</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="nb">type</span><span class="p">)</span>
<span class="k">if</span> <span class="n">fields</span><span class="p">:</span>
<span class="n">field_schema</span><span class="o">.</span><span class="n">update</span><span class="p">({</span><span class="s1">&#39;fields&#39;</span><span class="p">:</span> <span class="n">fields</span><span class="p">})</span>
<span class="k">return</span> <span class="n">field_schema</span></div>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.get_bq_fields"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.get_bq_fields">[docs]</a> <span class="k">def</span> <span class="nf">get_bq_fields</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="nb">type</span><span class="p">):</span>
<span class="n">fields</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">if</span> <span class="ow">not</span> <span class="bp">cls</span><span class="o">.</span><span class="n">is_simple_type</span><span class="p">(</span><span class="nb">type</span><span class="p">):</span>
<span class="n">names</span><span class="p">,</span> <span class="n">types</span> <span class="o">=</span> <span class="p">[],</span> <span class="p">[]</span>
<span class="k">if</span> <span class="bp">cls</span><span class="o">.</span><span class="n">is_array_type</span><span class="p">(</span><span class="nb">type</span><span class="p">)</span> <span class="ow">and</span> <span class="bp">cls</span><span class="o">.</span><span class="n">is_record_type</span><span class="p">(</span><span class="nb">type</span><span class="o">.</span><span class="n">subtypes</span><span class="p">[</span><span class="mi">0</span><span class="p">]):</span>
<span class="n">names</span> <span class="o">=</span> <span class="nb">type</span><span class="o">.</span><span class="n">subtypes</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">fieldnames</span>
<span class="n">types</span> <span class="o">=</span> <span class="nb">type</span><span class="o">.</span><span class="n">subtypes</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">subtypes</span>
<span class="k">elif</span> <span class="bp">cls</span><span class="o">.</span><span class="n">is_record_type</span><span class="p">(</span><span class="nb">type</span><span class="p">):</span>
<span class="n">names</span> <span class="o">=</span> <span class="nb">type</span><span class="o">.</span><span class="n">fieldnames</span>
<span class="n">types</span> <span class="o">=</span> <span class="nb">type</span><span class="o">.</span><span class="n">subtypes</span>
<span class="k">if</span> <span class="n">types</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">names</span> <span class="ow">and</span> <span class="nb">type</span><span class="o">.</span><span class="n">cassname</span> <span class="o">==</span> <span class="s1">&#39;TupleType&#39;</span><span class="p">:</span>
<span class="n">names</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;field_&#39;</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">i</span><span class="p">)</span> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">types</span><span class="p">))]</span>
<span class="k">elif</span> <span class="n">types</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">names</span> <span class="ow">and</span> <span class="nb">type</span><span class="o">.</span><span class="n">cassname</span> <span class="o">==</span> <span class="s1">&#39;MapType&#39;</span><span class="p">:</span>
<span class="n">names</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;key&#39;</span><span class="p">,</span> <span class="s1">&#39;value&#39;</span><span class="p">]</span>
<span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="nb">type</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">names</span><span class="p">,</span> <span class="n">types</span><span class="p">):</span>
<span class="n">field</span> <span class="o">=</span> <span class="bp">cls</span><span class="o">.</span><span class="n">generate_schema_dict</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="nb">type</span><span class="p">)</span>
<span class="n">fields</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">field</span><span class="p">)</span>
<span class="k">return</span> <span class="n">fields</span></div>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.is_simple_type"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.is_simple_type">[docs]</a> <span class="k">def</span> <span class="nf">is_simple_type</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="nb">type</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">type</span><span class="o">.</span><span class="n">cassname</span> <span class="ow">in</span> <span class="n">CassandraToGoogleCloudStorageOperator</span><span class="o">.</span><span class="n">CQL_TYPE_MAP</span></div>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.is_array_type"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.is_array_type">[docs]</a> <span class="k">def</span> <span class="nf">is_array_type</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="nb">type</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">type</span><span class="o">.</span><span class="n">cassname</span> <span class="ow">in</span> <span class="p">[</span><span class="s1">&#39;ListType&#39;</span><span class="p">,</span> <span class="s1">&#39;SetType&#39;</span><span class="p">]</span></div>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.is_record_type"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.is_record_type">[docs]</a> <span class="k">def</span> <span class="nf">is_record_type</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="nb">type</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">type</span><span class="o">.</span><span class="n">cassname</span> <span class="ow">in</span> <span class="p">[</span><span class="s1">&#39;UserType&#39;</span><span class="p">,</span> <span class="s1">&#39;TupleType&#39;</span><span class="p">,</span> <span class="s1">&#39;MapType&#39;</span><span class="p">]</span></div>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.get_bq_type"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.get_bq_type">[docs]</a> <span class="k">def</span> <span class="nf">get_bq_type</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="nb">type</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">cls</span><span class="o">.</span><span class="n">is_simple_type</span><span class="p">(</span><span class="nb">type</span><span class="p">):</span>
<span class="k">return</span> <span class="n">CassandraToGoogleCloudStorageOperator</span><span class="o">.</span><span class="n">CQL_TYPE_MAP</span><span class="p">[</span><span class="nb">type</span><span class="o">.</span><span class="n">cassname</span><span class="p">]</span>
<span class="k">elif</span> <span class="bp">cls</span><span class="o">.</span><span class="n">is_record_type</span><span class="p">(</span><span class="nb">type</span><span class="p">):</span>
<span class="k">return</span> <span class="s1">&#39;RECORD&#39;</span>
<span class="k">elif</span> <span class="bp">cls</span><span class="o">.</span><span class="n">is_array_type</span><span class="p">(</span><span class="nb">type</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">cls</span><span class="o">.</span><span class="n">get_bq_type</span><span class="p">(</span><span class="nb">type</span><span class="o">.</span><span class="n">subtypes</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s1">&#39;Not a supported type: &#39;</span> <span class="o">+</span> <span class="nb">type</span><span class="o">.</span><span class="n">cassname</span><span class="p">)</span></div>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="CassandraToGoogleCloudStorageOperator.get_bq_mode"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/cassandra_to_gcs/index.html#airflow.contrib.operators.cassandra_to_gcs.CassandraToGoogleCloudStorageOperator.get_bq_mode">[docs]</a> <span class="k">def</span> <span class="nf">get_bq_mode</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="nb">type</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">cls</span><span class="o">.</span><span class="n">is_array_type</span><span class="p">(</span><span class="nb">type</span><span class="p">)</span> <span class="ow">or</span> <span class="nb">type</span><span class="o">.</span><span class="n">cassname</span> <span class="o">==</span> <span class="s1">&#39;MapType&#39;</span><span class="p">:</span>
<span class="k">return</span> <span class="s1">&#39;REPEATED&#39;</span>
<span class="k">elif</span> <span class="bp">cls</span><span class="o">.</span><span class="n">is_record_type</span><span class="p">(</span><span class="nb">type</span><span class="p">)</span> <span class="ow">or</span> <span class="bp">cls</span><span class="o">.</span><span class="n">is_simple_type</span><span class="p">(</span><span class="nb">type</span><span class="p">):</span>
<span class="k">return</span> <span class="s1">&#39;NULLABLE&#39;</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s1">&#39;Not a supported type: &#39;</span> <span class="o">+</span> <span class="nb">type</span><span class="o">.</span><span class="n">cassname</span><span class="p">)</span></div></div>
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