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Posted to commits@airflow.apache.org by ma...@apache.org on 2016/06/05 05:24:13 UTC
[23/34] incubator-airflow-site git commit: Initial commit
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+ <h1>Source code for http_operator</h1><div class="highlight"><pre>
+<span></span><span class="kn">import</span> <span class="nn">logging</span>
+
+<span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="kn">import</span> <span class="n">AirflowException</span>
+<span class="kn">from</span> <span class="nn">airflow.hooks</span> <span class="kn">import</span> <span class="n">HttpHook</span>
+<span class="kn">from</span> <span class="nn">airflow.models</span> <span class="kn">import</span> <span class="n">BaseOperator</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="kn">import</span> <span class="n">apply_defaults</span>
+
+
+<div class="viewcode-block" id="SimpleHttpOperator"><a class="viewcode-back" href="../code.html#airflow.operators.SimpleHttpOperator">[docs]</a><span class="k">class</span> <span class="nc">SimpleHttpOperator</span><span class="p">(</span><span class="n">BaseOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Calls an endpoint on an HTTP system to execute an action</span>
+
+<span class="sd"> :param http_conn_id: The connection to run the sensor against</span>
+<span class="sd"> :type http_conn_id: string</span>
+<span class="sd"> :param endpoint: The relative part of the full url</span>
+<span class="sd"> :type endpoint: string</span>
+<span class="sd"> :param method: The HTTP method to use, default = "POST"</span>
+<span class="sd"> :type method: string</span>
+<span class="sd"> :param data: The data to pass. POST-data in POST/PUT and params</span>
+<span class="sd"> in the URL for a GET request.</span>
+<span class="sd"> :type data: For POST/PUT, depends on the content-type parameter,</span>
+<span class="sd"> for GET a dictionary of key/value string pairs</span>
+<span class="sd"> :param headers: The HTTP headers to be added to the GET request</span>
+<span class="sd"> :type headers: a dictionary of string key/value pairs</span>
+<span class="sd"> :param response_check: A check against the 'requests' response object.</span>
+<span class="sd"> Returns True for 'pass' and False otherwise.</span>
+<span class="sd"> :type response_check: A lambda or defined function.</span>
+<span class="sd"> :param extra_options: Extra options for the 'requests' library, see the</span>
+<span class="sd"> 'requests' documentation (options to modify timeout, ssl, etc.)</span>
+<span class="sd"> :type extra_options: A dictionary of options, where key is string and value</span>
+<span class="sd"> depends on the option that's being modified.</span>
+<span class="sd"> """</span>
+
+ <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'endpoint'</span><span class="p">,</span><span class="s1">'data'</span><span class="p">,)</span>
+ <span class="n">template_ext</span> <span class="o">=</span> <span class="p">()</span>
+ <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">'#f4a460'</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">endpoint</span><span class="p">,</span>
+ <span class="n">method</span><span class="o">=</span><span class="s1">'POST'</span><span class="p">,</span>
+ <span class="n">data</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span>
+ <span class="n">headers</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span>
+ <span class="n">response_check</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span>
+ <span class="n">extra_options</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span>
+ <span class="n">http_conn_id</span><span class="o">=</span><span class="s1">'http_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">SimpleHttpOperator</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__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">http_conn_id</span> <span class="o">=</span> <span class="n">http_conn_id</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">method</span> <span class="o">=</span> <span class="n">method</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">endpoint</span> <span class="o">=</span> <span class="n">endpoint</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">headers</span> <span class="o">=</span> <span class="n">headers</span> <span class="ow">or</span> <span class="p">{}</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">data</span> <span class="o">=</span> <span class="n">data</span> <span class="ow">or</span> <span class="p">{}</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">response_check</span> <span class="o">=</span> <span class="n">response_check</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">extra_options</span> <span class="o">=</span> <span class="n">extra_options</span> <span class="ow">or</span> <span class="p">{}</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">http</span> <span class="o">=</span> <span class="n">HttpHook</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">method</span><span class="p">,</span> <span class="n">http_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">http_conn_id</span><span class="p">)</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Calling HTTP method"</span><span class="p">)</span>
+ <span class="n">response</span> <span class="o">=</span> <span class="n">http</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">endpoint</span><span class="p">,</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">data</span><span class="p">,</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">headers</span><span class="p">,</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">extra_options</span><span class="p">)</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">response_check</span><span class="p">:</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">response_check</span><span class="p">(</span><span class="n">response</span><span class="p">):</span>
+ <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"Response check returned False."</span><span class="p">)</span></div>
+</pre></div>
+
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+ © Copyright 2014, Maxime Beauchemin, Airbnb.
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+ <h1>All modules for which code is available</h1>
+<ul><li><a href="S3_hook.html">S3_hook</a></li>
+<li><a href="airflow/contrib/operators/hipchat_operator.html">airflow.contrib.operators.hipchat_operator</a></li>
+<li><a href="airflow/executors/celery_executor.html">airflow.executors.celery_executor</a></li>
+<li><a href="airflow/executors/local_executor.html">airflow.executors.local_executor</a></li>
+<li><a href="airflow/executors/sequential_executor.html">airflow.executors.sequential_executor</a></li>
+<li><a href="airflow/macros.html">airflow.macros</a></li>
+<ul><li><a href="airflow/macros/hive.html">airflow.macros.hive</a></li>
+</ul><li><a href="airflow/models.html">airflow.models</a></li>
+<li><a href="airflow/operators/docker_operator.html">airflow.operators.docker_operator</a></li>
+<li><a href="airflow/operators/sensors.html">airflow.operators.sensors</a></li>
+<li><a href="bash_operator.html">bash_operator</a></li>
+<li><a href="cloudant_hook.html">cloudant_hook</a></li>
+<li><a href="dagrun_operator.html">dagrun_operator</a></li>
+<li><a href="dbapi_hook.html">dbapi_hook</a></li>
+<li><a href="druid_hook.html">druid_hook</a></li>
+<li><a href="dummy_operator.html">dummy_operator</a></li>
+<li><a href="email_operator.html">email_operator</a></li>
+<li><a href="ftp_hook.html">ftp_hook</a></li>
+<li><a href="gcs_hook.html">gcs_hook</a></li>
+<li><a href="generic_transfer.html">generic_transfer</a></li>
+<li><a href="hive_hooks.html">hive_hooks</a></li>
+<li><a href="hive_operator.html">hive_operator</a></li>
+<li><a href="hive_to_druid.html">hive_to_druid</a></li>
+<li><a href="hive_to_mysql.html">hive_to_mysql</a></li>
+<li><a href="hive_to_samba_operator.html">hive_to_samba_operator</a></li>
+<li><a href="http_hook.html">http_hook</a></li>
+<li><a href="http_operator.html">http_operator</a></li>
+<li><a href="mssql_hook.html">mssql_hook</a></li>
+<li><a href="mssql_operator.html">mssql_operator</a></li>
+<li><a href="mssql_to_hive.html">mssql_to_hive</a></li>
+<li><a href="mysql_hook.html">mysql_hook</a></li>
+<li><a href="mysql_operator.html">mysql_operator</a></li>
+<li><a href="mysql_to_hive.html">mysql_to_hive</a></li>
+<li><a href="postgres_hook.html">postgres_hook</a></li>
+<li><a href="postgres_operator.html">postgres_operator</a></li>
+<li><a href="presto_check_operator.html">presto_check_operator</a></li>
+<li><a href="presto_hook.html">presto_hook</a></li>
+<li><a href="python_operator.html">python_operator</a></li>
+<li><a href="s3_to_hive_operator.html">s3_to_hive_operator</a></li>
+<li><a href="sensors.html">sensors</a></li>
+<li><a href="slack_operator.html">slack_operator</a></li>
+<li><a href="sqlite_hook.html">sqlite_hook</a></li>
+<li><a href="ssh_execute_operator.html">ssh_execute_operator</a></li>
+<li><a href="ssh_hook.html">ssh_hook</a></li>
+<li><a href="vertica_hook.html">vertica_hook</a></li>
+<li><a href="vertica_operator.html">vertica_operator</a></li>
+<li><a href="vertica_to_hive.html">vertica_to_hive</a></li>
+<li><a href="webhdfs_hook.html">webhdfs_hook</a></li>
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+
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+
+ <h1>Source code for mssql_hook</h1><div class="highlight"><pre>
+<span></span><span class="kn">import</span> <span class="nn">pymssql</span>
+
+<span class="kn">from</span> <span class="nn">airflow.hooks.dbapi_hook</span> <span class="kn">import</span> <span class="n">DbApiHook</span>
+
+
+<div class="viewcode-block" id="MsSqlHook"><a class="viewcode-back" href="../code.html#airflow.hooks.MsSqlHook">[docs]</a><span class="k">class</span> <span class="nc">MsSqlHook</span><span class="p">(</span><span class="n">DbApiHook</span><span class="p">):</span>
+ <span class="sd">'''</span>
+<span class="sd"> Interact with Microsoft SQL Server.</span>
+<span class="sd"> '''</span>
+
+ <span class="n">conn_name_attr</span> <span class="o">=</span> <span class="s1">'mssql_conn_id'</span>
+ <span class="n">default_conn_name</span> <span class="o">=</span> <span class="s1">'mssql_default'</span>
+ <span class="n">supports_autocommit</span> <span class="o">=</span> <span class="bp">True</span>
+
+<div class="viewcode-block" id="MsSqlHook.get_conn"><a class="viewcode-back" href="../code.html#airflow.hooks.MsSqlHook.get_conn">[docs]</a> <span class="k">def</span> <span class="nf">get_conn</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Returns a mssql connection object</span>
+<span class="sd"> """</span>
+ <span class="n">conn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connection</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">mssql_conn_id</span><span class="p">)</span>
+ <span class="n">conn</span> <span class="o">=</span> <span class="n">pymssql</span><span class="o">.</span><span class="n">connect</span><span class="p">(</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">host</span><span class="p">,</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">login</span><span class="p">,</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">password</span><span class="p">,</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">schema</span><span class="p">)</span>
+ <span class="k">return</span> <span class="n">conn</span></div>
+
+ <span class="k">def</span> <span class="nf">set_autocommit</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">conn</span><span class="p">,</span> <span class="n">autocommit</span><span class="p">):</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">autocommit</span><span class="p">(</span><span class="n">autocommit</span><span class="p">)</span></div>
+</pre></div>
+
+ </div>
+ </div>
+ <footer>
+
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+ <hr/>
+
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+ <p>
+ © Copyright 2014, Maxime Beauchemin, Airbnb.
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----------------------------------------------------------------------
diff --git a/_modules/mssql_operator.html b/_modules/mssql_operator.html
new file mode 100644
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@@ -0,0 +1,234 @@
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+
+ <h1>Source code for mssql_operator</h1><div class="highlight"><pre>
+<span></span><span class="kn">import</span> <span class="nn">logging</span>
+
+<span class="kn">from</span> <span class="nn">airflow.hooks</span> <span class="kn">import</span> <span class="n">MsSqlHook</span>
+<span class="kn">from</span> <span class="nn">airflow.models</span> <span class="kn">import</span> <span class="n">BaseOperator</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="kn">import</span> <span class="n">apply_defaults</span>
+
+
+<div class="viewcode-block" id="MsSqlOperator"><a class="viewcode-back" href="../code.html#airflow.operators.MsSqlOperator">[docs]</a><span class="k">class</span> <span class="nc">MsSqlOperator</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 Microsoft SQL database</span>
+<span class="sd"> :param mssql_conn_id: reference to a specific mssql database</span>
+<span class="sd"> :type mssql_conn_id: string</span>
+<span class="sd"> :param sql: the sql code to be executed</span>
+<span class="sd"> :type sql: string or string pointing to a template file.</span>
+<span class="sd"> File must have a '.sql' extensions.</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">mssql_conn_id</span><span class="o">=</span><span class="s1">'mssql_default'</span><span class="p">,</span> <span class="n">parameters</span><span class="o">=</span><span class="bp">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">MsSqlOperator</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__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">mssql_conn_id</span> <span class="o">=</span> <span class="n">mssql_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="bp">self</span><span class="o">.</span><span class="n">parameters</span> <span class="o">=</span> <span class="n">parameters</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">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Executing: '</span> <span class="o">+</span> <span class="nb">str</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">hook</span> <span class="o">=</span> <span class="n">MsSqlHook</span><span class="p">(</span><span class="n">mssql_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">mssql_conn_id</span><span class="p">)</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="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></div>
+</pre></div>
+
+ </div>
+ </div>
+ <footer>
+
+
+ <hr/>
+
+ <div role="contentinfo">
+ <p>
+ © Copyright 2014, Maxime Beauchemin, Airbnb.
+
+ </p>
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----------------------------------------------------------------------
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new file mode 100644
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+
+ <h1>Source code for mssql_to_hive</h1><div class="highlight"><pre>
+<span></span><span class="kn">from</span> <span class="nn">builtins</span> <span class="kn">import</span> <span class="nb">chr</span>
+<span class="kn">from</span> <span class="nn">collections</span> <span class="kn">import</span> <span class="n">OrderedDict</span>
+<span class="kn">import</span> <span class="nn">unicodecsv</span> <span class="kn">as</span> <span class="nn">csv</span>
+<span class="kn">import</span> <span class="nn">logging</span>
+<span class="kn">from</span> <span class="nn">tempfile</span> <span class="kn">import</span> <span class="n">NamedTemporaryFile</span>
+<span class="kn">import</span> <span class="nn">pymssql</span>
+
+
+<span class="kn">from</span> <span class="nn">airflow.hooks</span> <span class="kn">import</span> <span class="n">HiveCliHook</span><span class="p">,</span> <span class="n">MsSqlHook</span>
+<span class="kn">from</span> <span class="nn">airflow.models</span> <span class="kn">import</span> <span class="n">BaseOperator</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="kn">import</span> <span class="n">apply_defaults</span>
+
+
+<div class="viewcode-block" id="MsSqlToHiveTransfer"><a class="viewcode-back" href="../code.html#airflow.operators.MsSqlToHiveTransfer">[docs]</a><span class="k">class</span> <span class="nc">MsSqlToHiveTransfer</span><span class="p">(</span><span class="n">BaseOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Moves data from Microsoft SQL Server to Hive. The operator runs</span>
+<span class="sd"> your query against Microsoft SQL Server, stores the file locally</span>
+<span class="sd"> before loading it into a Hive table. If the ``create`` or</span>
+<span class="sd"> ``recreate`` arguments are set to ``True``,</span>
+<span class="sd"> a ``CREATE TABLE`` and ``DROP TABLE`` statements are generated.</span>
+<span class="sd"> Hive data types are inferred from the cursor's metadata.</span>
+<span class="sd"> Note that the table generated in Hive uses ``STORED AS textfile``</span>
+<span class="sd"> which isn't the most efficient serialization format. If a</span>
+<span class="sd"> large amount of data is loaded and/or if the table gets</span>
+<span class="sd"> queried considerably, you may want to use this operator only to</span>
+<span class="sd"> stage the data into a temporary table before loading it into its</span>
+<span class="sd"> final destination using a ``HiveOperator``.</span>
+<span class="sd"> :param sql: SQL query to execute against the Microsoft SQL Server database</span>
+<span class="sd"> :type sql: str</span>
+<span class="sd"> :param hive_table: target Hive table, use dot notation to target a</span>
+<span class="sd"> specific database</span>
+<span class="sd"> :type hive_table: str</span>
+<span class="sd"> :param create: whether to create the table if it doesn't exist</span>
+<span class="sd"> :type create: bool</span>
+<span class="sd"> :param recreate: whether to drop and recreate the table at every execution</span>
+<span class="sd"> :type recreate: bool</span>
+<span class="sd"> :param partition: target partition as a dict of partition columns and values</span>
+<span class="sd"> :type partition: dict</span>
+<span class="sd"> :param delimiter: field delimiter in the file</span>
+<span class="sd"> :type delimiter: str</span>
+<span class="sd"> :param mssql_conn_id: source Microsoft SQL Server connection</span>
+<span class="sd"> :type mssql_conn_id: str</span>
+<span class="sd"> :param hive_conn_id: destination hive connection</span>
+<span class="sd"> :type hive_conn_id: 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">'partition'</span><span class="p">,</span> <span class="s1">'hive_table'</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">hive_table</span><span class="p">,</span>
+ <span class="n">create</span><span class="o">=</span><span class="bp">True</span><span class="p">,</span>
+ <span class="n">recreate</span><span class="o">=</span><span class="bp">False</span><span class="p">,</span>
+ <span class="n">partition</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span>
+ <span class="n">delimiter</span><span class="o">=</span><span class="nb">chr</span><span class="p">(</span><span class="mi">1</span><span class="p">),</span>
+ <span class="n">mssql_conn_id</span><span class="o">=</span><span class="s1">'mssql_default'</span><span class="p">,</span>
+ <span class="n">hive_cli_conn_id</span><span class="o">=</span><span class="s1">'hive_cli_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">MsSqlToHiveTransfer</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__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">hive_table</span> <span class="o">=</span> <span class="n">hive_table</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">partition</span> <span class="o">=</span> <span class="n">partition</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">create</span> <span class="o">=</span> <span class="n">create</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">recreate</span> <span class="o">=</span> <span class="n">recreate</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">delimiter</span> <span class="o">=</span> <span class="n">delimiter</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">mssql_conn_id</span> <span class="o">=</span> <span class="n">mssql_conn_id</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">hive_cli_conn_id</span> <span class="o">=</span> <span class="n">hive_cli_conn_id</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">partition</span> <span class="o">=</span> <span class="n">partition</span> <span class="ow">or</span> <span class="p">{}</span>
+
+ <span class="nd">@classmethod</span>
+ <span class="k">def</span> <span class="nf">type_map</span><span class="p">(</span><span class="n">cls</span><span class="p">,</span> <span class="n">mssql_type</span><span class="p">):</span>
+ <span class="n">t</span> <span class="o">=</span> <span class="n">pymssql</span>
+ <span class="n">d</span> <span class="o">=</span> <span class="p">{</span>
+ <span class="n">t</span><span class="o">.</span><span class="n">BINARY</span><span class="o">.</span><span class="n">value</span><span class="p">:</span> <span class="s1">'INT'</span><span class="p">,</span>
+ <span class="n">t</span><span class="o">.</span><span class="n">DECIMAL</span><span class="o">.</span><span class="n">value</span><span class="p">:</span> <span class="s1">'FLOAT'</span><span class="p">,</span>
+ <span class="n">t</span><span class="o">.</span><span class="n">NUMBER</span><span class="o">.</span><span class="n">value</span><span class="p">:</span> <span class="s1">'INT'</span><span class="p">,</span>
+ <span class="p">}</span>
+ <span class="k">return</span> <span class="n">d</span><span class="p">[</span><span class="n">mssql_type</span><span class="p">]</span> <span class="k">if</span> <span class="n">mssql_type</span> <span class="ow">in</span> <span class="n">d</span> <span class="k">else</span> <span class="s1">'STRING'</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">hive</span> <span class="o">=</span> <span class="n">HiveCliHook</span><span class="p">(</span><span class="n">hive_cli_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">hive_cli_conn_id</span><span class="p">)</span>
+ <span class="n">mssql</span> <span class="o">=</span> <span class="n">MsSqlHook</span><span class="p">(</span><span class="n">mssql_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">mssql_conn_id</span><span class="p">)</span>
+
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Dumping Microsoft SQL Server query results to local file"</span><span class="p">)</span>
+ <span class="n">conn</span> <span class="o">=</span> <span class="n">mssql</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">conn</span><span class="o">.</span><span class="n">cursor</span><span class="p">()</span>
+ <span class="n">cursor</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">sql</span><span class="p">)</span>
+ <span class="k">with</span> <span class="n">NamedTemporaryFile</span><span class="p">(</span><span class="s2">"w"</span><span class="p">)</span> <span class="k">as</span> <span class="n">f</span><span class="p">:</span>
+ <span class="n">csv_writer</span> <span class="o">=</span> <span class="n">csv</span><span class="o">.</span><span class="n">writer</span><span class="p">(</span><span class="n">f</span><span class="p">,</span> <span class="n">delimiter</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">delimiter</span><span class="p">,</span> <span class="n">encoding</span><span class="o">=</span><span class="s1">'utf-8'</span><span class="p">)</span>
+ <span class="n">field_dict</span> <span class="o">=</span> <span class="n">OrderedDict</span><span class="p">()</span>
+ <span class="n">col_count</span> <span class="o">=</span> <span class="mi">0</span>
+ <span class="k">for</span> <span class="n">field</span> <span class="ow">in</span> <span class="n">cursor</span><span class="o">.</span><span class="n">description</span><span class="p">:</span>
+ <span class="n">col_count</span> <span class="o">+=</span> <span class="mi">1</span>
+ <span class="n">col_position</span> <span class="o">=</span> <span class="s2">"Column{position}"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">position</span><span class="o">=</span><span class="n">col_count</span><span class="p">)</span>
+ <span class="n">field_dict</span><span class="p">[</span><span class="n">col_position</span> <span class="k">if</span> <span class="n">field</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="s1">''</span> <span class="k">else</span> <span class="n">field</span><span class="p">[</span><span class="mi">0</span><span class="p">]]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">type_map</span><span class="p">(</span><span class="n">field</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>
+ <span class="n">csv_writer</span><span class="o">.</span><span class="n">writerows</span><span class="p">(</span><span class="n">cursor</span><span class="p">)</span>
+ <span class="n">f</span><span class="o">.</span><span class="n">flush</span><span class="p">()</span>
+ <span class="n">cursor</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Loading file into Hive"</span><span class="p">)</span>
+ <span class="n">hive</span><span class="o">.</span><span class="n">load_file</span><span class="p">(</span>
+ <span class="n">f</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">hive_table</span><span class="p">,</span>
+ <span class="n">field_dict</span><span class="o">=</span><span class="n">field_dict</span><span class="p">,</span>
+ <span class="n">create</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">create</span><span class="p">,</span>
+ <span class="n">partition</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">partition</span><span class="p">,</span>
+ <span class="n">delimiter</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">delimiter</span><span class="p">,</span>
+ <span class="n">recreate</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">recreate</span><span class="p">)</span></div>
+</pre></div>
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+
+ <h1>Source code for mysql_hook</h1><div class="highlight"><pre>
+<span></span><span class="kn">import</span> <span class="nn">MySQLdb</span>
+<span class="kn">import</span> <span class="nn">MySQLdb.cursors</span>
+
+<span class="kn">from</span> <span class="nn">airflow.hooks.dbapi_hook</span> <span class="kn">import</span> <span class="n">DbApiHook</span>
+
+<div class="viewcode-block" id="MySqlHook"><a class="viewcode-back" href="../code.html#airflow.hooks.MySqlHook">[docs]</a><span class="k">class</span> <span class="nc">MySqlHook</span><span class="p">(</span><span class="n">DbApiHook</span><span class="p">):</span>
+ <span class="sd">'''</span>
+<span class="sd"> Interact with MySQL.</span>
+
+<span class="sd"> You can specify charset in the extra field of your connection</span>
+<span class="sd"> as ``{"charset": "utf8"}``. Also you can choose cursor as</span>
+<span class="sd"> ``{"cursor": "SSCursor"}``. Refer to the MySQLdb.cursors for more details.</span>
+<span class="sd"> '''</span>
+
+ <span class="n">conn_name_attr</span> <span class="o">=</span> <span class="s1">'mysql_conn_id'</span>
+ <span class="n">default_conn_name</span> <span class="o">=</span> <span class="s1">'mysql_default'</span>
+ <span class="n">supports_autocommit</span> <span class="o">=</span> <span class="bp">True</span>
+
+<div class="viewcode-block" id="MySqlHook.get_conn"><a class="viewcode-back" href="../code.html#airflow.hooks.MySqlHook.get_conn">[docs]</a> <span class="k">def</span> <span class="nf">get_conn</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Returns a mysql connection object</span>
+<span class="sd"> """</span>
+ <span class="n">conn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connection</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">mysql_conn_id</span><span class="p">)</span>
+ <span class="n">conn_config</span> <span class="o">=</span> <span class="p">{</span>
+ <span class="s2">"user"</span><span class="p">:</span> <span class="n">conn</span><span class="o">.</span><span class="n">login</span><span class="p">,</span>
+ <span class="s2">"passwd"</span><span class="p">:</span> <span class="n">conn</span><span class="o">.</span><span class="n">password</span> <span class="ow">or</span> <span class="s1">''</span>
+ <span class="p">}</span>
+
+ <span class="n">conn_config</span><span class="p">[</span><span class="s2">"host"</span><span class="p">]</span> <span class="o">=</span> <span class="n">conn</span><span class="o">.</span><span class="n">host</span> <span class="ow">or</span> <span class="s1">'localhost'</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">conn</span><span class="o">.</span><span class="n">port</span><span class="p">:</span>
+ <span class="n">conn_config</span><span class="p">[</span><span class="s2">"port"</span><span class="p">]</span> <span class="o">=</span> <span class="mi">3306</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">conn_config</span><span class="p">[</span><span class="s2">"port"</span><span class="p">]</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">conn</span><span class="o">.</span><span class="n">port</span><span class="p">)</span>
+
+ <span class="n">conn_config</span><span class="p">[</span><span class="s2">"db"</span><span class="p">]</span> <span class="o">=</span> <span class="n">conn</span><span class="o">.</span><span class="n">schema</span> <span class="ow">or</span> <span class="s1">''</span>
+
+ <span class="k">if</span> <span class="n">conn</span><span class="o">.</span><span class="n">extra_dejson</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'charset'</span><span class="p">,</span> <span class="bp">False</span><span class="p">):</span>
+ <span class="n">conn_config</span><span class="p">[</span><span class="s2">"charset"</span><span class="p">]</span> <span class="o">=</span> <span class="n">conn</span><span class="o">.</span><span class="n">extra_dejson</span><span class="p">[</span><span class="s2">"charset"</span><span class="p">]</span>
+ <span class="k">if</span> <span class="p">(</span><span class="n">conn_config</span><span class="p">[</span><span class="s2">"charset"</span><span class="p">])</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> <span class="o">==</span> <span class="s1">'utf8'</span> <span class="ow">or</span>\
+ <span class="p">(</span><span class="n">conn_config</span><span class="p">[</span><span class="s2">"charset"</span><span class="p">])</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> <span class="o">==</span> <span class="s1">'utf-8'</span><span class="p">:</span>
+ <span class="n">conn_config</span><span class="p">[</span><span class="s2">"use_unicode"</span><span class="p">]</span> <span class="o">=</span> <span class="bp">True</span>
+ <span class="k">if</span> <span class="n">conn</span><span class="o">.</span><span class="n">extra_dejson</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'cursor'</span><span class="p">,</span> <span class="bp">False</span><span class="p">):</span>
+ <span class="k">if</span> <span class="p">(</span><span class="n">conn</span><span class="o">.</span><span class="n">extra_dejson</span><span class="p">[</span><span class="s2">"cursor"</span><span class="p">])</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> <span class="o">==</span> <span class="s1">'sscursor'</span><span class="p">:</span>
+ <span class="n">conn_config</span><span class="p">[</span><span class="s2">"cursorclass"</span><span class="p">]</span> <span class="o">=</span> <span class="n">MySQLdb</span><span class="o">.</span><span class="n">cursors</span><span class="o">.</span><span class="n">SSCursor</span>
+ <span class="k">elif</span> <span class="p">(</span><span class="n">conn</span><span class="o">.</span><span class="n">extra_dejson</span><span class="p">[</span><span class="s2">"cursor"</span><span class="p">])</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> <span class="o">==</span> <span class="s1">'dictcursor'</span><span class="p">:</span>
+ <span class="n">conn_config</span><span class="p">[</span><span class="s2">"cursorclass"</span><span class="p">]</span> <span class="o">=</span> <span class="n">MySQLdb</span><span class="o">.</span><span class="n">cursors</span><span class="o">.</span><span class="n">DictCursor</span>
+ <span class="k">elif</span> <span class="p">(</span><span class="n">conn</span><span class="o">.</span><span class="n">extra_dejson</span><span class="p">[</span><span class="s2">"cursor"</span><span class="p">])</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> <span class="o">==</span> <span class="s1">'ssdictcursor'</span><span class="p">:</span>
+ <span class="n">conn_config</span><span class="p">[</span><span class="s2">"cursorclass"</span><span class="p">]</span> <span class="o">=</span> <span class="n">MySQLdb</span><span class="o">.</span><span class="n">cursors</span><span class="o">.</span><span class="n">SSDictCursor</span>
+ <span class="n">local_infile</span> <span class="o">=</span> <span class="n">conn</span><span class="o">.</span><span class="n">extra_dejson</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'local_infile'</span><span class="p">,</span><span class="bp">False</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">conn</span><span class="o">.</span><span class="n">extra_dejson</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'ssl'</span><span class="p">,</span> <span class="bp">False</span><span class="p">):</span>
+ <span class="n">conn_config</span><span class="p">[</span><span class="s1">'ssl'</span><span class="p">]</span> <span class="o">=</span> <span class="n">conn</span><span class="o">.</span><span class="n">extra_dejson</span><span class="p">[</span><span class="s1">'ssl'</span><span class="p">]</span>
+ <span class="k">if</span> <span class="n">local_infile</span><span class="p">:</span>
+ <span class="n">conn_config</span><span class="p">[</span><span class="s2">"local_infile"</span><span class="p">]</span> <span class="o">=</span> <span class="mi">1</span>
+ <span class="n">conn</span> <span class="o">=</span> <span class="n">MySQLdb</span><span class="o">.</span><span class="n">connect</span><span class="p">(</span><span class="o">**</span><span class="n">conn_config</span><span class="p">)</span>
+ <span class="k">return</span> <span class="n">conn</span></div>
+
+<div class="viewcode-block" id="MySqlHook.bulk_load"><a class="viewcode-back" href="../code.html#airflow.hooks.MySqlHook.bulk_load">[docs]</a> <span class="k">def</span> <span class="nf">bulk_load</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">tmp_file</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Loads a tab-delimited file into a database table</span>
+<span class="sd"> """</span>
+ <span class="n">conn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span>
+ <span class="n">cur</span> <span class="o">=</span> <span class="n">conn</span><span class="o">.</span><span class="n">cursor</span><span class="p">()</span>
+ <span class="n">cur</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="s2">"""</span>
+<span class="s2"> LOAD DATA LOCAL INFILE '{tmp_file}'</span>
+<span class="s2"> INTO TABLE {table}</span>
+<span class="s2"> """</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="o">**</span><span class="nb">locals</span><span class="p">()))</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span></div></div>
+</pre></div>
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