

<!--
Javascript to render AIRFLOW-XXX and PR references in text
as HTML links.

Overrides extrahead block from sphinx_rtd_theme
https://www.sphinx-doc.org/en/master/templating.html
-->


<!DOCTYPE html>
<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
<head>
  <meta charset="utf-8">
  
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  
  <title>airflow.contrib.operators.gcs_download_operator &mdash; Airflow Documentation</title>
  

    <link rel="shortcut icon" href="../../../../../_static/pin_32.png"/>
  
  
  <script type="text/javascript" src="../../../../../_static/js/modernizr.min.js"></script>
  
    
      <script type="text/javascript" id="documentation_options" data-url_root="../../../../../" src="../../../../../_static/documentation_options.js"></script>
        <script type="text/javascript" src="../../../../../_static/jquery.js"></script>
        <script type="text/javascript" src="../../../../../_static/underscore.js"></script>
        <script type="text/javascript" src="../../../../../_static/doctools.js"></script>
        <script type="text/javascript" src="../../../../../_static/language_data.js"></script>
        <script type="text/javascript" src="../../../../../_static/jira-links.js"></script>
    
    <script type="text/javascript" src="../../../../../_static/js/theme.js"></script>

    
  <link rel="stylesheet" href="../../../../../_static/css/theme.css" type="text/css" />
  <link rel="stylesheet" href="../../../../../_static/pygments.css" type="text/css" />
  <link rel="stylesheet" href="../../../../../_static/graphviz.css" type="text/css" />
  <link rel="stylesheet" href="../../../../../_static/exampleinclude.css" type="text/css" />
    <link rel="index" title="Index" href="../../../../../genindex.html" />
    <link rel="search" title="Search" href="../../../../../search.html" />
    <link rel="next" title="airflow.contrib.operators.gcs_list_operator" href="../gcs_list_operator/index.html" />
    <link rel="prev" title="airflow.contrib.operators.gcs_delete_operator" href="../gcs_delete_operator/index.html" />
   
  <script>
  </script>
  <style>

  </style>

</head>

<body class="wy-body-for-nav">

   
  <div class="wy-grid-for-nav">
    
    <nav data-toggle="wy-nav-shift" class="wy-nav-side">
      <div class="wy-side-scroll">
        <div class="wy-side-nav-search" >
          

            <a href="../../../../../index.html" class="icon icon-home"> Airflow
          

          </a>

          
              <div class="version">
                1.10.8
              </div>
            
          
<div role="search">
  <form id="rtd-search-form" class="wy-form" action="../../../../../search.html" method="get">
    <input type="text" name="q" placeholder="Search docs" />
    <input type="hidden" name="check_keywords" value="yes" />
    <input type="hidden" name="area" value="default" />
  </form>
</div>

          
        </div>

        <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
          
            
              <ul>
<li class="toctree-l1"><a class="reference internal" href="../../../../../project.html">Project</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../license.html">License</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../start.html">Quick Start</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../installation.html">Installation</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../tutorial.html">Tutorial</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../howto/index.html">How-to Guides</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../ui.html">UI / Screenshots</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../concepts.html">Concepts</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../profiling.html">Data Profiling</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../cli.html">Command Line Interface Reference</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../scheduler.html">Scheduling &amp; Triggers</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../executor/index.html">Executor</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../plugins.html">Plugins</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../security.html">Security</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../timezone.html">Time zones</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../api.html">REST API Reference</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../integration.html">Integration</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../metrics.html">Metrics</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../errors.html">Error Tracking</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../kubernetes.html">Kubernetes</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../lineage.html">Lineage</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../dag-serialization.html">DAG Serialization</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../changelog.html">Changelog</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../best-practices.html">Best Practices</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../faq.html">FAQ</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../macros.html">Macros reference</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../privacy_notice.html">Privacy Notice</a></li>
</ul>
<p class="caption"><span class="caption-text">References</span></p>
<ul class="current">
<li class="toctree-l1 current"><a class="reference internal" href="../../../../index.html">Python API</a><ul class="current">
<li class="toctree-l2 current"><a class="reference internal" href="../../../../index.html#operators">Operators</a><ul class="current">
<li class="toctree-l3"><a class="reference internal" href="../../../../index.html#baseoperator">BaseOperator</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../../../index.html#basesensoroperator">BaseSensorOperator</a></li>
<li class="toctree-l3 current"><a class="reference internal" href="../../../../index.html#operators-packages">Operators packages</a><ul class="current">
<li class="toctree-l4"><a class="reference internal" href="../../../operators/index.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.operators</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../../sensors/index.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.sensors</span></code></a></li>
<li class="toctree-l4 current"><a class="reference internal" href="../index.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.contrib.operators</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../sensors/index.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.contrib.sensors</span></code></a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../../../../index.html#hooks">Hooks</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../../../index.html#executors">Executors</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../../../index.html#models">Models</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../../../index.html#core-and-community-package">Core and community package</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../../../configurations-ref.html">Configurations</a></li>
</ul>

            
        </div>
      </div>
    </nav>

    <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">

      
      <nav class="wy-nav-top" aria-label="top navigation">
        
          <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
          <a href="../../../../../index.html">Airflow</a>
        
      </nav>


      <div class="wy-nav-content">
        
        <div class="rst-content">
        
          
<div role="navigation" aria-label="breadcrumbs navigation">

  <ul class="wy-breadcrumbs">
    
      <li><a href="../../../../../index.html">Docs</a> &raquo;</li>
        
          <li><a href="../../../../index.html">Python API Reference</a> &raquo;</li>
        
          <li><a href="../index.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.contrib.operators</span></code></a> &raquo;</li>
        
      <li><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.contrib.operators.gcs_download_operator</span></code></li>
    
    
      <li class="wy-breadcrumbs-aside">
        
            
            <a href="../../../../../_sources/_api/airflow/contrib/operators/gcs_download_operator/index.rst.txt" rel="nofollow"> View page source</a>
          
        
      </li>
    
  </ul>

  
  <hr/>
</div>
          <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
           <div itemprop="articleBody">
            
  <div class="section" id="module-airflow.contrib.operators.gcs_download_operator">
<span id="airflow-contrib-operators-gcs-download-operator"></span><h1><a class="reference internal" href="#module-airflow.contrib.operators.gcs_download_operator" title="airflow.contrib.operators.gcs_download_operator"><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.contrib.operators.gcs_download_operator</span></code></a><a class="headerlink" href="#module-airflow.contrib.operators.gcs_download_operator" title="Permalink to this headline">¶</a></h1>
<div class="section" id="module-contents">
<h2>Module Contents<a class="headerlink" href="#module-contents" title="Permalink to this headline">¶</a></h2>
<dl class="class">
<dt id="airflow.contrib.operators.gcs_download_operator.GoogleCloudStorageDownloadOperator">
<em class="property">class </em><code class="sig-prename descclassname">airflow.contrib.operators.gcs_download_operator.</code><code class="sig-name descname">GoogleCloudStorageDownloadOperator</code><span class="sig-paren">(</span><em class="sig-param">bucket</em>, <em class="sig-param">object</em>, <em class="sig-param">filename=None</em>, <em class="sig-param">store_to_xcom_key=None</em>, <em class="sig-param">google_cloud_storage_conn_id='google_cloud_default'</em>, <em class="sig-param">delegate_to=None</em>, <em class="sig-param">*args</em>, <em class="sig-param">**kwargs</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/gcs_download_operator.html#GoogleCloudStorageDownloadOperator"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.gcs_download_operator.GoogleCloudStorageDownloadOperator" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="../../../models/index.html#airflow.models.BaseOperator" title="airflow.models.BaseOperator"><code class="xref py py-class docutils literal notranslate"><span class="pre">airflow.models.BaseOperator</span></code></a></p>
<p>Downloads a file from Google Cloud Storage.</p>
<p>If a filename is supplied, it writes the file to the specified location, alternatively one can
set the <code class="docutils literal notranslate"><span class="pre">store_to_xcom_key</span></code> parameter to True push the file content into xcom. When the file size
exceeds the maximum size for xcom it is recommended to write to a file.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>bucket</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.8)"><em>str</em></a>) – The Google cloud storage bucket where the object is.
Must not contain ‘gs://’ prefix. (templated)</p></li>
<li><p><strong>object</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.8)"><em>str</em></a>) – The name of the object to download in the Google cloud
storage bucket. (templated)</p></li>
<li><p><strong>filename</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.8)"><em>str</em></a>) – The file path, including filename,  on the local file system (where the
operator is being executed) that the file should be downloaded to. (templated)
If no filename passed, the downloaded data will not be stored on the local file
system.</p></li>
<li><p><strong>store_to_xcom_key</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.8)"><em>str</em></a>) – If this param is set, the operator will push
the contents of the downloaded file to XCom with the key set in this
parameter. If not set, the downloaded data will not be pushed to XCom. (templated)</p></li>
<li><p><strong>google_cloud_storage_conn_id</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.8)"><em>str</em></a>) – The connection ID to use when
connecting to Google cloud storage.</p></li>
<li><p><strong>delegate_to</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.8)"><em>str</em></a>) – The account to impersonate, if any.
For this to work, the service account making the request must have
domain-wide delegation enabled.</p></li>
</ul>
</dd>
</dl>
<dl class="attribute">
<dt id="airflow.contrib.operators.gcs_download_operator.GoogleCloudStorageDownloadOperator.template_fields">
<code class="sig-name descname">template_fields</code><em class="property"> = ['bucket', 'object', 'filename', 'store_to_xcom_key']</em><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/gcs_download_operator.html#GoogleCloudStorageDownloadOperator.template_fields"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.gcs_download_operator.GoogleCloudStorageDownloadOperator.template_fields" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>

<dl class="attribute">
<dt id="airflow.contrib.operators.gcs_download_operator.GoogleCloudStorageDownloadOperator.ui_color">
<code class="sig-name descname">ui_color</code><em class="property"> = #f0eee4</em><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/gcs_download_operator.html#GoogleCloudStorageDownloadOperator.ui_color"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.gcs_download_operator.GoogleCloudStorageDownloadOperator.ui_color" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>

<dl class="method">
<dt id="airflow.contrib.operators.gcs_download_operator.GoogleCloudStorageDownloadOperator.execute">
<code class="sig-name descname">execute</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">context</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/gcs_download_operator.html#GoogleCloudStorageDownloadOperator.execute"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.gcs_download_operator.GoogleCloudStorageDownloadOperator.execute" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>

</dd></dl>

</div>
</div>


           </div>
           
          </div>
          

<footer>
  
    <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
      
        <a href="../gcs_list_operator/index.html" class="btn btn-neutral float-right" title="airflow.contrib.operators.gcs_list_operator" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a>
      
      
        <a href="../gcs_delete_operator/index.html" class="btn btn-neutral float-left" title="airflow.contrib.operators.gcs_delete_operator" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a>
      
    </div>
  

  <hr/>

  <div role="contentinfo">
    <p>

    </p>
  </div>
  Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/rtfd/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
  <div class="footer">This page uses <a href="https://analytics.google.com/">
    Google Analytics</a> to collect statistics. You can disable it by blocking
    the JavaScript coming from www.google-analytics.com. Check our
    <a href="../../../../../privacy_notice.html">Privacy Policy</a>
    for more details.
  </div>


</footer>

        </div>
      </div>

    </section>

  </div>
  

  <script type="text/javascript">
      jQuery(function () {
          SphinxRtdTheme.Navigation.enable(true);
      });
  </script>

  
    <!-- Theme Analytics -->
    <script>
    (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
      (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
      m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
    })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');

    ga('create', 'UA-140539454-1', 'auto');
    ga('send', 'pageview');
    </script>

    
</body>
</html>