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Posted to commits@airflow.apache.org by ka...@apache.org on 2018/08/27 16:26:29 UTC
[09/51] [partial] incubator-airflow-site git commit: 1.10.0
http://git-wip-us.apache.org/repos/asf/incubator-airflow-site/blob/11437c14/_modules/airflow/operators/postgres_operator.html
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+ <h1>Source code for airflow.operators.postgres_operator</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
+<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
+<span class="c1"># distributed with this work for additional information</span>
+<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
+<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
+<span class="c1"># "License"); you may not use this file except in compliance</span>
+<span class="c1"># with the License. You may obtain a copy of the License at</span>
+<span class="c1"># </span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1"># </span>
+<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
+<span class="c1"># software distributed under the License is distributed on an</span>
+<span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
+<span class="c1"># KIND, either express or implied. See the License for the</span>
+<span class="c1"># specific language governing permissions and limitations</span>
+<span class="c1"># under the License.</span>
+<span class="kn">from</span> <span class="nn">airflow.hooks.postgres_hook</span> <span class="k">import</span> <span class="n">PostgresHook</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="PostgresOperator"><a class="viewcode-back" href="../../../code.html#airflow.operators.postgres_operator.PostgresOperator">[docs]</a><span class="k">class</span> <span class="nc">PostgresOperator</span><span class="p">(</span><span class="n">BaseOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Executes sql code in a specific Postgres database</span>
+
+<span class="sd"> :param postgres_conn_id: reference to a specific postgres database</span>
+<span class="sd"> :type postgres_conn_id: string</span>
+<span class="sd"> :param sql: the sql code to be executed</span>
+<span class="sd"> :type sql: Can receive a str representing a sql statement,</span>
+<span class="sd"> a list of str (sql statements), or reference to a template file.</span>
+<span class="sd"> Template reference are recognized by str ending in '.sql'</span>
+<span class="sd"> :param database: name of database which overwrite defined one in connection</span>
+<span class="sd"> :type database: string</span>
+<span class="sd"> """</span>
+
+ <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'sql'</span><span class="p">,)</span>
+ <span class="n">template_ext</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'.sql'</span><span class="p">,)</span>
+ <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">'#ededed'</span>
+
+ <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">sql</span><span class="p">,</span>
+ <span class="n">postgres_conn_id</span><span class="o">=</span><span class="s1">'postgres_default'</span><span class="p">,</span> <span class="n">autocommit</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
+ <span class="n">parameters</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
+ <span class="n">database</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="nb">super</span><span class="p">(</span><span class="n">PostgresOperator</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">sql</span> <span class="o">=</span> <span class="n">sql</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">postgres_conn_id</span> <span class="o">=</span> <span class="n">postgres_conn_id</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">autocommit</span> <span class="o">=</span> <span class="n">autocommit</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">parameters</span> <span class="o">=</span> <span class="n">parameters</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">database</span> <span class="o">=</span> <span class="n">database</span>
+
+ <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="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">'Executing: </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">sql</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">hook</span> <span class="o">=</span> <span class="n">PostgresHook</span><span class="p">(</span><span class="n">postgres_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">postgres_conn_id</span><span class="p">,</span>
+ <span class="n">schema</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">database</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">hook</span><span class="o">.</span><span class="n">run</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">sql</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">autocommit</span><span class="p">,</span> <span class="n">parameters</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">parameters</span><span class="p">)</span>
+ <span class="k">for</span> <span class="n">output</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">hook</span><span class="o">.</span><span class="n">conn</span><span class="o">.</span><span class="n">notices</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="n">output</span><span class="p">)</span></div>
+</pre></div>
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+ <h1>Source code for airflow.operators.presto_check_operator</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
+<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
+<span class="c1"># distributed with this work for additional information</span>
+<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
+<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
+<span class="c1"># "License"); you may not use this file except in compliance</span>
+<span class="c1"># with the License. You may obtain a copy of the License at</span>
+<span class="c1"># </span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1"># </span>
+<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
+<span class="c1"># software distributed under the License is distributed on an</span>
+<span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
+<span class="c1"># KIND, either express or implied. See the License for the</span>
+<span class="c1"># specific language governing permissions and limitations</span>
+<span class="c1"># under the License.</span>
+
+<span class="kn">from</span> <span class="nn">airflow.hooks.presto_hook</span> <span class="k">import</span> <span class="n">PrestoHook</span>
+<span class="kn">from</span> <span class="nn">airflow.operators.check_operator</span> <span class="k">import</span> <span class="n">CheckOperator</span><span class="p">,</span> <span class="n">ValueCheckOperator</span><span class="p">,</span> <span class="n">IntervalCheckOperator</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="PrestoCheckOperator"><a class="viewcode-back" href="../../../code.html#airflow.operators.presto_check_operator.PrestoCheckOperator">[docs]</a><span class="k">class</span> <span class="nc">PrestoCheckOperator</span><span class="p">(</span><span class="n">CheckOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Performs checks against Presto. The ``PrestoCheckOperator`` expects</span>
+<span class="sd"> a sql query that will return a single row. Each value on that</span>
+<span class="sd"> first row is evaluated using python ``bool`` casting. If any of the</span>
+<span class="sd"> values return ``False`` the check is failed and errors out.</span>
+
+<span class="sd"> Note that Python bool casting evals the following as ``False``:</span>
+
+<span class="sd"> * ``False``</span>
+<span class="sd"> * ``0``</span>
+<span class="sd"> * Empty string (``""``)</span>
+<span class="sd"> * Empty list (``[]``)</span>
+<span class="sd"> * Empty dictionary or set (``{}``)</span>
+
+<span class="sd"> Given a query like ``SELECT COUNT(*) FROM foo``, it will fail only if</span>
+<span class="sd"> the count ``== 0``. You can craft much more complex query that could,</span>
+<span class="sd"> for instance, check that the table has the same number of rows as</span>
+<span class="sd"> the source table upstream, or that the count of today's partition is</span>
+<span class="sd"> greater than yesterday's partition, or that a set of metrics are less</span>
+<span class="sd"> than 3 standard deviation for the 7 day average.</span>
+
+<span class="sd"> This operator can be used as a data quality check in your pipeline, and</span>
+<span class="sd"> depending on where you put it in your DAG, you have the choice to</span>
+<span class="sd"> stop the critical path, preventing from</span>
+<span class="sd"> publishing dubious data, or on the side and receive email alterts</span>
+<span class="sd"> without stopping the progress of the DAG.</span>
+
+<span class="sd"> :param sql: the sql to be executed</span>
+<span class="sd"> :type sql: string</span>
+<span class="sd"> :param presto_conn_id: reference to the Presto database</span>
+<span class="sd"> :type presto_conn_id: string</span>
+<span class="sd"> """</span>
+
+ <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">sql</span><span class="p">,</span>
+ <span class="n">presto_conn_id</span><span class="o">=</span><span class="s1">'presto_default'</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="nb">super</span><span class="p">(</span><span class="n">PrestoCheckOperator</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">sql</span><span class="o">=</span><span class="n">sql</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">presto_conn_id</span> <span class="o">=</span> <span class="n">presto_conn_id</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">sql</span> <span class="o">=</span> <span class="n">sql</span>
+
+ <span class="k">def</span> <span class="nf">get_db_hook</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">return</span> <span class="n">PrestoHook</span><span class="p">(</span><span class="n">presto_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">presto_conn_id</span><span class="p">)</span></div>
+
+
+<div class="viewcode-block" id="PrestoValueCheckOperator"><a class="viewcode-back" href="../../../code.html#airflow.operators.presto_check_operator.PrestoValueCheckOperator">[docs]</a><span class="k">class</span> <span class="nc">PrestoValueCheckOperator</span><span class="p">(</span><span class="n">ValueCheckOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Performs a simple value check using sql code.</span>
+
+<span class="sd"> :param sql: the sql to be executed</span>
+<span class="sd"> :type sql: string</span>
+<span class="sd"> :param presto_conn_id: reference to the Presto database</span>
+<span class="sd"> :type presto_conn_id: string</span>
+<span class="sd"> """</span>
+
+ <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">sql</span><span class="p">,</span> <span class="n">pass_value</span><span class="p">,</span> <span class="n">tolerance</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
+ <span class="n">presto_conn_id</span><span class="o">=</span><span class="s1">'presto_default'</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="nb">super</span><span class="p">(</span><span class="n">PrestoValueCheckOperator</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">sql</span><span class="o">=</span><span class="n">sql</span><span class="p">,</span> <span class="n">pass_value</span><span class="o">=</span><span class="n">pass_value</span><span class="p">,</span> <span class="n">tolerance</span><span class="o">=</span><span class="n">tolerance</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">presto_conn_id</span> <span class="o">=</span> <span class="n">presto_conn_id</span>
+
+ <span class="k">def</span> <span class="nf">get_db_hook</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">return</span> <span class="n">PrestoHook</span><span class="p">(</span><span class="n">presto_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">presto_conn_id</span><span class="p">)</span></div>
+
+
+<div class="viewcode-block" id="PrestoIntervalCheckOperator"><a class="viewcode-back" href="../../../code.html#airflow.operators.presto_check_operator.PrestoIntervalCheckOperator">[docs]</a><span class="k">class</span> <span class="nc">PrestoIntervalCheckOperator</span><span class="p">(</span><span class="n">IntervalCheckOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Checks that the values of metrics given as SQL expressions are within</span>
+<span class="sd"> a certain tolerance of the ones from days_back before.</span>
+
+<span class="sd"> :param table: the table name</span>
+<span class="sd"> :type table: str</span>
+<span class="sd"> :param days_back: number of days between ds and the ds we want to check</span>
+<span class="sd"> against. Defaults to 7 days</span>
+<span class="sd"> :type days_back: int</span>
+<span class="sd"> :param metrics_threshold: a dictionary of ratios indexed by metrics</span>
+<span class="sd"> :type metrics_threshold: dict</span>
+<span class="sd"> :param presto_conn_id: reference to the Presto database</span>
+<span class="sd"> :type presto_conn_id: string</span>
+<span class="sd"> """</span>
+
+ <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">table</span><span class="p">,</span> <span class="n">metrics_thresholds</span><span class="p">,</span>
+ <span class="n">date_filter_column</span><span class="o">=</span><span class="s1">'ds'</span><span class="p">,</span> <span class="n">days_back</span><span class="o">=-</span><span class="mi">7</span><span class="p">,</span>
+ <span class="n">presto_conn_id</span><span class="o">=</span><span class="s1">'presto_default'</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="nb">super</span><span class="p">(</span><span class="n">PrestoIntervalCheckOperator</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">table</span><span class="o">=</span><span class="n">table</span><span class="p">,</span> <span class="n">metrics_thresholds</span><span class="o">=</span><span class="n">metrics_thresholds</span><span class="p">,</span>
+ <span class="n">date_filter_column</span><span class="o">=</span><span class="n">date_filter_column</span><span class="p">,</span> <span class="n">days_back</span><span class="o">=</span><span class="n">days_back</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">presto_conn_id</span> <span class="o">=</span> <span class="n">presto_conn_id</span>
+
+ <span class="k">def</span> <span class="nf">get_db_hook</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">return</span> <span class="n">PrestoHook</span><span class="p">(</span><span class="n">presto_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">presto_conn_id</span><span class="p">)</span></div>
+</pre></div>
+
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----------------------------------------------------------------------
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+
+ <h1>Source code for airflow.operators.presto_to_mysql</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
+<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
+<span class="c1"># distributed with this work for additional information</span>
+<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
+<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
+<span class="c1"># "License"); you may not use this file except in compliance</span>
+<span class="c1"># with the License. You may obtain a copy of the License at</span>
+<span class="c1"># </span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1"># </span>
+<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
+<span class="c1"># software distributed under the License is distributed on an</span>
+<span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
+<span class="c1"># KIND, either express or implied. See the License for the</span>
+<span class="c1"># specific language governing permissions and limitations</span>
+<span class="c1"># under the License.</span>
+<span class="kn">from</span> <span class="nn">airflow.hooks.presto_hook</span> <span class="k">import</span> <span class="n">PrestoHook</span>
+<span class="kn">from</span> <span class="nn">airflow.hooks.mysql_hook</span> <span class="k">import</span> <span class="n">MySqlHook</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="PrestoToMySqlTransfer"><a class="viewcode-back" href="../../../code.html#airflow.operators.presto_to_mysql.PrestoToMySqlTransfer">[docs]</a><span class="k">class</span> <span class="nc">PrestoToMySqlTransfer</span><span class="p">(</span><span class="n">BaseOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Moves data from Presto to MySQL, note that for now the data is loaded</span>
+<span class="sd"> into memory before being pushed to MySQL, so this operator should</span>
+<span class="sd"> be used for smallish amount of data.</span>
+
+<span class="sd"> :param sql: SQL query to execute against Presto</span>
+<span class="sd"> :type sql: str</span>
+<span class="sd"> :param mysql_table: target MySQL table, use dot notation to target a</span>
+<span class="sd"> specific database</span>
+<span class="sd"> :type mysql_table: str</span>
+<span class="sd"> :param mysql_conn_id: source mysql connection</span>
+<span class="sd"> :type mysql_conn_id: str</span>
+<span class="sd"> :param presto_conn_id: source presto connection</span>
+<span class="sd"> :type presto_conn_id: str</span>
+<span class="sd"> :param mysql_preoperator: sql statement to run against mysql prior to</span>
+<span class="sd"> import, typically use to truncate of delete in place of the data</span>
+<span class="sd"> coming in, allowing the task to be idempotent (running the task</span>
+<span class="sd"> twice won't double load data)</span>
+<span class="sd"> :type mysql_preoperator: str</span>
+<span class="sd"> """</span>
+
+ <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'sql'</span><span class="p">,</span> <span class="s1">'mysql_table'</span><span class="p">,</span> <span class="s1">'mysql_preoperator'</span><span class="p">)</span>
+ <span class="n">template_ext</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'.sql'</span><span class="p">,)</span>
+ <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">'#a0e08c'</span>
+
+ <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">sql</span><span class="p">,</span>
+ <span class="n">mysql_table</span><span class="p">,</span>
+ <span class="n">presto_conn_id</span><span class="o">=</span><span class="s1">'presto_default'</span><span class="p">,</span>
+ <span class="n">mysql_conn_id</span><span class="o">=</span><span class="s1">'mysql_default'</span><span class="p">,</span>
+ <span class="n">mysql_preoperator</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="nb">super</span><span class="p">(</span><span class="n">PrestoToMySqlTransfer</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">sql</span> <span class="o">=</span> <span class="n">sql</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">mysql_table</span> <span class="o">=</span> <span class="n">mysql_table</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">mysql_conn_id</span> <span class="o">=</span> <span class="n">mysql_conn_id</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">mysql_preoperator</span> <span class="o">=</span> <span class="n">mysql_preoperator</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">presto_conn_id</span> <span class="o">=</span> <span class="n">presto_conn_id</span>
+
+ <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">presto</span> <span class="o">=</span> <span class="n">PrestoHook</span><span class="p">(</span><span class="n">presto_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">presto_conn_id</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">"Extracting data from Presto: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">sql</span><span class="p">)</span>
+ <span class="n">results</span> <span class="o">=</span> <span class="n">presto</span><span class="o">.</span><span class="n">get_records</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">sql</span><span class="p">)</span>
+
+ <span class="n">mysql</span> <span class="o">=</span> <span class="n">MySqlHook</span><span class="p">(</span><span class="n">mysql_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">mysql_conn_id</span><span class="p">)</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">mysql_preoperator</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">"Running MySQL preoperator"</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="bp">self</span><span class="o">.</span><span class="n">mysql_preoperator</span><span class="p">)</span>
+ <span class="n">mysql</span><span class="o">.</span><span class="n">run</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">mysql_preoperator</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">"Inserting rows into MySQL"</span><span class="p">)</span>
+ <span class="n">mysql</span><span class="o">.</span><span class="n">insert_rows</span><span class="p">(</span><span class="n">table</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">mysql_table</span><span class="p">,</span> <span class="n">rows</span><span class="o">=</span><span class="n">results</span><span class="p">)</span></div>
+</pre></div>
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