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<h1>Source code for airflow.operators.hive_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"># &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">re</span>
<span class="kn">from</span> <span class="nn">airflow.hooks.hive_hooks</span> <span class="k">import</span> <span class="n">HiveCliHook</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>
<span class="kn">from</span> <span class="nn">airflow.utils.operator_helpers</span> <span class="k">import</span> <span class="n">context_to_airflow_vars</span>
<div class="viewcode-block" id="HiveOperator"><a class="viewcode-back" href="../../../_api/airflow/operators/hive_operator/index.html#airflow.operators.hive_operator.HiveOperator">[docs]</a><span class="k">class</span> <span class="nc">HiveOperator</span><span class="p">(</span><span class="n">BaseOperator</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Executes hql code or hive script in a specific Hive database.</span>
<span class="sd"> :param hql: the hql to be executed. Note that you may also use</span>
<span class="sd"> a relative path from the dag file of a (template) hive</span>
<span class="sd"> script. (templated)</span>
<span class="sd"> :type hql: str</span>
<span class="sd"> :param hive_cli_conn_id: reference to the Hive database. (templated)</span>
<span class="sd"> :type hive_cli_conn_id: str</span>
<span class="sd"> :param hiveconfs: if defined, these key value pairs will be passed</span>
<span class="sd"> to hive as ``-hiveconf &quot;key&quot;=&quot;value&quot;``</span>
<span class="sd"> :type hiveconfs: dict</span>
<span class="sd"> :param hiveconf_jinja_translate: when True, hiveconf-type templating</span>
<span class="sd"> ${var} gets translated into jinja-type templating {{ var }} and</span>
<span class="sd"> ${hiveconf:var} gets translated into jinja-type templating {{ var }}.</span>
<span class="sd"> Note that you may want to use this along with the</span>
<span class="sd"> ``DAG(user_defined_macros=myargs)`` parameter. View the DAG</span>
<span class="sd"> object documentation for more details.</span>
<span class="sd"> :type hiveconf_jinja_translate: bool</span>
<span class="sd"> :param script_begin_tag: If defined, the operator will get rid of the</span>
<span class="sd"> part of the script before the first occurrence of `script_begin_tag`</span>
<span class="sd"> :type script_begin_tag: str</span>
<span class="sd"> :param mapred_queue: queue used by the Hadoop CapacityScheduler. (templated)</span>
<span class="sd"> :type mapred_queue: str</span>
<span class="sd"> :param mapred_queue_priority: priority within CapacityScheduler queue.</span>
<span class="sd"> Possible settings include: VERY_HIGH, HIGH, NORMAL, LOW, VERY_LOW</span>
<span class="sd"> :type mapred_queue_priority: str</span>
<span class="sd"> :param mapred_job_name: This name will appear in the jobtracker.</span>
<span class="sd"> This can make monitoring easier.</span>
<span class="sd"> :type mapred_job_name: str</span>
<span class="sd"> &quot;&quot;&quot;</span>
<div class="viewcode-block" id="HiveOperator.template_fields"><a class="viewcode-back" href="../../../_api/airflow/operators/hive_operator/index.html#airflow.operators.hive_operator.HiveOperator.template_fields">[docs]</a> <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">&#39;hql&#39;</span><span class="p">,</span> <span class="s1">&#39;schema&#39;</span><span class="p">,</span> <span class="s1">&#39;hive_cli_conn_id&#39;</span><span class="p">,</span> <span class="s1">&#39;mapred_queue&#39;</span><span class="p">,</span>
<span class="s1">&#39;hiveconfs&#39;</span><span class="p">,</span> <span class="s1">&#39;mapred_job_name&#39;</span><span class="p">,</span> <span class="s1">&#39;mapred_queue_priority&#39;</span><span class="p">)</span></div>
<div class="viewcode-block" id="HiveOperator.template_ext"><a class="viewcode-back" href="../../../_api/airflow/operators/hive_operator/index.html#airflow.operators.hive_operator.HiveOperator.template_ext">[docs]</a> <span class="n">template_ext</span> <span class="o">=</span> <span class="p">(</span><span class="s1">&#39;.hql&#39;</span><span class="p">,</span> <span class="s1">&#39;.sql&#39;</span><span class="p">,)</span></div>
<div class="viewcode-block" id="HiveOperator.ui_color"><a class="viewcode-back" href="../../../_api/airflow/operators/hive_operator/index.html#airflow.operators.hive_operator.HiveOperator.ui_color">[docs]</a> <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">&#39;#f0e4ec&#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">hql</span><span class="p">,</span>
<span class="n">hive_cli_conn_id</span><span class="o">=</span><span class="s1">&#39;hive_cli_default&#39;</span><span class="p">,</span>
<span class="n">schema</span><span class="o">=</span><span class="s1">&#39;default&#39;</span><span class="p">,</span>
<span class="n">hiveconfs</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
<span class="n">hiveconf_jinja_translate</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
<span class="n">script_begin_tag</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
<span class="n">run_as_owner</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
<span class="n">mapred_queue</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
<span class="n">mapred_queue_priority</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
<span class="n">mapred_job_name</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">HiveOperator</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">hql</span> <span class="o">=</span> <span class="n">hql</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">schema</span> <span class="o">=</span> <span class="n">schema</span>
<span class="bp">self</span><span class="o">.</span><span class="n">hiveconfs</span> <span class="o">=</span> <span class="n">hiveconfs</span> <span class="ow">or</span> <span class="p">{}</span>
<span class="bp">self</span><span class="o">.</span><span class="n">hiveconf_jinja_translate</span> <span class="o">=</span> <span class="n">hiveconf_jinja_translate</span>
<span class="bp">self</span><span class="o">.</span><span class="n">script_begin_tag</span> <span class="o">=</span> <span class="n">script_begin_tag</span>
<span class="bp">self</span><span class="o">.</span><span class="n">run_as</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">if</span> <span class="n">run_as_owner</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">run_as</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag</span><span class="o">.</span><span class="n">owner</span>
<span class="bp">self</span><span class="o">.</span><span class="n">mapred_queue</span> <span class="o">=</span> <span class="n">mapred_queue</span>
<span class="bp">self</span><span class="o">.</span><span class="n">mapred_queue_priority</span> <span class="o">=</span> <span class="n">mapred_queue_priority</span>
<span class="bp">self</span><span class="o">.</span><span class="n">mapred_job_name</span> <span class="o">=</span> <span class="n">mapred_job_name</span>
<span class="c1"># assigned lazily - just for consistency we can create the attribute with a</span>
<span class="c1"># `None` initial value, later it will be populated by the execute method.</span>
<span class="c1"># This also makes `on_kill` implementation consistent since it assumes `self.hook`</span>
<span class="c1"># is defined.</span>
<span class="bp">self</span><span class="o">.</span><span class="n">hook</span> <span class="o">=</span> <span class="kc">None</span>
<div class="viewcode-block" id="HiveOperator.get_hook"><a class="viewcode-back" href="../../../_api/airflow/operators/hive_operator/index.html#airflow.operators.hive_operator.HiveOperator.get_hook">[docs]</a> <span class="k">def</span> <span class="nf">get_hook</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</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">run_as</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">run_as</span><span class="p">,</span>
<span class="n">mapred_queue</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">mapred_queue</span><span class="p">,</span>
<span class="n">mapred_queue_priority</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">mapred_queue_priority</span><span class="p">,</span>
<span class="n">mapred_job_name</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">mapred_job_name</span><span class="p">)</span></div>
<div class="viewcode-block" id="HiveOperator.prepare_template"><a class="viewcode-back" href="../../../_api/airflow/operators/hive_operator/index.html#airflow.operators.hive_operator.HiveOperator.prepare_template">[docs]</a> <span class="k">def</span> <span class="nf">prepare_template</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">hiveconf_jinja_translate</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">hql</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">sub</span><span class="p">(</span>
<span class="sa">r</span><span class="s2">&quot;(\$\{(hiveconf:)?([ a-zA-Z0-9_]*)\})&quot;</span><span class="p">,</span> <span class="sa">r</span><span class="s2">&quot;{{ \g&lt;3&gt; }}&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">hql</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">script_begin_tag</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">script_begin_tag</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">hql</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">hql</span> <span class="o">=</span> <span class="s2">&quot;</span><span class="se">\n</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">hql</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">script_begin_tag</span><span class="p">)[</span><span class="mi">1</span><span class="p">:])</span></div>
<div class="viewcode-block" id="HiveOperator.execute"><a class="viewcode-back" href="../../../_api/airflow/operators/hive_operator/index.html#airflow.operators.hive_operator.HiveOperator.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="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">&#39;Executing: </span><span class="si">%s</span><span class="s1">&#39;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">hql</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="bp">self</span><span class="o">.</span><span class="n">get_hook</span><span class="p">()</span>
<span class="c1"># set the mapred_job_name if it&#39;s not set with dag, task, execution time info</span>
<span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">mapred_job_name</span><span class="p">:</span>
<span class="n">ti</span> <span class="o">=</span> <span class="n">context</span><span class="p">[</span><span class="s1">&#39;ti&#39;</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">mapred_job_name</span> <span class="o">=</span> <span class="s1">&#39;Airflow HiveOperator task for </span><span class="si">{}</span><span class="s1">.</span><span class="si">{}</span><span class="s1">.</span><span class="si">{}</span><span class="s1">.</span><span class="si">{}</span><span class="s1">&#39;</span>\
<span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">ti</span><span class="o">.</span><span class="n">hostname</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="n">ti</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">ti</span><span class="o">.</span><span class="n">task_id</span><span class="p">,</span>
<span class="n">ti</span><span class="o">.</span><span class="n">execution_date</span><span class="o">.</span><span class="n">isoformat</span><span class="p">())</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">hiveconf_jinja_translate</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">hiveconfs</span> <span class="o">=</span> <span class="n">context_to_airflow_vars</span><span class="p">(</span><span class="n">context</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">hiveconfs</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">context_to_airflow_vars</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">&#39;Passing HiveConf: </span><span class="si">%s</span><span class="s1">&#39;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">hiveconfs</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_cli</span><span class="p">(</span><span class="n">hql</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">hql</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">schema</span><span class="p">,</span> <span class="n">hive_conf</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">hiveconfs</span><span class="p">)</span></div>
<div class="viewcode-block" id="HiveOperator.dry_run"><a class="viewcode-back" href="../../../_api/airflow/operators/hive_operator/index.html#airflow.operators.hive_operator.HiveOperator.dry_run">[docs]</a> <span class="k">def</span> <span class="nf">dry_run</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">hook</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_hook</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">test_hql</span><span class="p">(</span><span class="n">hql</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">hql</span><span class="p">)</span></div>
<div class="viewcode-block" id="HiveOperator.on_kill"><a class="viewcode-back" href="../../../_api/airflow/operators/hive_operator/index.html#airflow.operators.hive_operator.HiveOperator.on_kill">[docs]</a> <span class="k">def</span> <span class="nf">on_kill</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">hook</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">kill</span><span class="p">()</span></div></div>
</pre></div>
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