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  <div class="section" id="module-airflow.contrib.operators.dynamodb_to_s3">
<span id="airflow-contrib-operators-dynamodb-to-s3"></span><h1><a class="reference internal" href="#module-airflow.contrib.operators.dynamodb_to_s3" title="airflow.contrib.operators.dynamodb_to_s3"><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.contrib.operators.dynamodb_to_s3</span></code></a><a class="headerlink" href="#module-airflow.contrib.operators.dynamodb_to_s3" title="Permalink to this headline">¶</a></h1>
<p><p>This module contains operators to replicate records from
DynamoDB table to S3.</p>
</p>
<div class="section" id="module-contents">
<h2>Module Contents<a class="headerlink" href="#module-contents" title="Permalink to this headline">¶</a></h2>
<dl class="function">
<dt id="airflow.contrib.operators.dynamodb_to_s3._convert_item_to_json_bytes">
<code class="sig-prename descclassname">airflow.contrib.operators.dynamodb_to_s3.</code><code class="sig-name descname">_convert_item_to_json_bytes</code><span class="sig-paren">(</span><em class="sig-param">item</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/dynamodb_to_s3.html#_convert_item_to_json_bytes"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.dynamodb_to_s3._convert_item_to_json_bytes" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>

<dl class="function">
<dt id="airflow.contrib.operators.dynamodb_to_s3._upload_file_to_s3">
<code class="sig-prename descclassname">airflow.contrib.operators.dynamodb_to_s3.</code><code class="sig-name descname">_upload_file_to_s3</code><span class="sig-paren">(</span><em class="sig-param">file_obj</em>, <em class="sig-param">bucket_name</em>, <em class="sig-param">s3_key_prefix</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/dynamodb_to_s3.html#_upload_file_to_s3"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.dynamodb_to_s3._upload_file_to_s3" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>

<dl class="class">
<dt id="airflow.contrib.operators.dynamodb_to_s3.DynamoDBToS3Operator">
<em class="property">class </em><code class="sig-prename descclassname">airflow.contrib.operators.dynamodb_to_s3.</code><code class="sig-name descname">DynamoDBToS3Operator</code><span class="sig-paren">(</span><em class="sig-param">dynamodb_table_name</em>, <em class="sig-param">s3_bucket_name</em>, <em class="sig-param">file_size</em>, <em class="sig-param">dynamodb_scan_kwargs=None</em>, <em class="sig-param">s3_key_prefix=''</em>, <em class="sig-param">process_func=_convert_item_to_json_bytes</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/dynamodb_to_s3.html#DynamoDBToS3Operator"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.dynamodb_to_s3.DynamoDBToS3Operator" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="../../../models/baseoperator/index.html#airflow.models.baseoperator.BaseOperator" title="airflow.models.baseoperator.BaseOperator"><code class="xref py py-class docutils literal notranslate"><span class="pre">airflow.models.baseoperator.BaseOperator</span></code></a></p>
<p>Replicates records from a DynamoDB table to S3.
It scans a DynamoDB table and write the received records to a file
on the local filesystem. It flushes the file to S3 once the file size
exceeds the file size limit specified by the user.</p>
<p>Users can also specify a filtering criteria using dynamodb_scan_kwargs
to only replicate records that satisfy the criteria.</p>
<p>To parallelize the replication, users can create multiple tasks of DynamoDBToS3Operator.
For instance to replicate with parallelism of 2, create two tasks like:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">op1</span> <span class="o">=</span> <span class="n">DynamoDBToS3Operator</span><span class="p">(</span>
    <span class="n">task_id</span><span class="o">=</span><span class="s1">&#39;replicator-1&#39;</span><span class="p">,</span>
    <span class="n">dynamodb_table_name</span><span class="o">=</span><span class="s1">&#39;hello&#39;</span><span class="p">,</span>
    <span class="n">dynamodb_scan_kwargs</span><span class="o">=</span><span class="p">{</span>
        <span class="s1">&#39;TotalSegments&#39;</span><span class="p">:</span> <span class="mi">2</span><span class="p">,</span>
        <span class="s1">&#39;Segment&#39;</span><span class="p">:</span> <span class="mi">0</span><span class="p">,</span>
    <span class="p">},</span>
    <span class="o">...</span>
<span class="p">)</span>

<span class="n">op2</span> <span class="o">=</span> <span class="n">DynamoDBToS3Operator</span><span class="p">(</span>
    <span class="n">task_id</span><span class="o">=</span><span class="s1">&#39;replicator-2&#39;</span><span class="p">,</span>
    <span class="n">dynamodb_table_name</span><span class="o">=</span><span class="s1">&#39;hello&#39;</span><span class="p">,</span>
    <span class="n">dynamodb_scan_kwargs</span><span class="o">=</span><span class="p">{</span>
        <span class="s1">&#39;TotalSegments&#39;</span><span class="p">:</span> <span class="mi">2</span><span class="p">,</span>
        <span class="s1">&#39;Segment&#39;</span><span class="p">:</span> <span class="mi">1</span><span class="p">,</span>
    <span class="p">},</span>
    <span class="o">...</span>
<span class="p">)</span>
</pre></div>
</div>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>dynamodb_table_name</strong> – Dynamodb table to replicate data from</p></li>
<li><p><strong>s3_bucket_name</strong> – S3 bucket to replicate data to</p></li>
<li><p><strong>file_size</strong> – Flush file to s3 if file size &gt;= file_size</p></li>
<li><p><strong>dynamodb_scan_kwargs</strong> – kwargs pass to &lt;<a class="reference external" href="https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/dynamodb.html#DynamoDB.Table.scan">https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/dynamodb.html#DynamoDB.Table.scan</a>&gt;  # noqa: E501 pylint: disable=line-too-long</p></li>
<li><p><strong>s3_key_prefix</strong> – Prefix of s3 object key</p></li>
<li><p><strong>process_func</strong> – How we transforms a dynamodb item to bytes. By default we dump the json</p></li>
</ul>
</dd>
</dl>
<dl class="method">
<dt id="airflow.contrib.operators.dynamodb_to_s3.DynamoDBToS3Operator.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/dynamodb_to_s3.html#DynamoDBToS3Operator.execute"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.dynamodb_to_s3.DynamoDBToS3Operator.execute" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>

<dl class="method">
<dt id="airflow.contrib.operators.dynamodb_to_s3.DynamoDBToS3Operator._scan_dynamodb_and_upload_to_s3">
<code class="sig-name descname">_scan_dynamodb_and_upload_to_s3</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">temp_file</em>, <em class="sig-param">scan_kwargs</em>, <em class="sig-param">table</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/dynamodb_to_s3.html#DynamoDBToS3Operator._scan_dynamodb_and_upload_to_s3"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.dynamodb_to_s3.DynamoDBToS3Operator._scan_dynamodb_and_upload_to_s3" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>

</dd></dl>

</div>
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