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| <div class="section" id="module-airflow.contrib.hooks.azure_data_lake_hook"> |
| <span id="airflow-contrib-hooks-azure-data-lake-hook"></span><h1><a class="reference internal" href="#module-airflow.contrib.hooks.azure_data_lake_hook" title="airflow.contrib.hooks.azure_data_lake_hook"><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.contrib.hooks.azure_data_lake_hook</span></code></a><a class="headerlink" href="#module-airflow.contrib.hooks.azure_data_lake_hook" 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.hooks.azure_data_lake_hook.AzureDataLakeHook"> |
| <em class="property">class </em><code class="sig-prename descclassname">airflow.contrib.hooks.azure_data_lake_hook.</code><code class="sig-name descname">AzureDataLakeHook</code><span class="sig-paren">(</span><em class="sig-param">azure_data_lake_conn_id='azure_data_lake_default'</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/hooks/azure_data_lake_hook.html#AzureDataLakeHook"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.hooks.azure_data_lake_hook.AzureDataLakeHook" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Bases: <a class="reference internal" href="../../../hooks/base_hook/index.html#airflow.hooks.base_hook.BaseHook" title="airflow.hooks.base_hook.BaseHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">airflow.hooks.base_hook.BaseHook</span></code></a></p> |
| <p>Interacts with Azure Data Lake.</p> |
| <p>Client ID and client secret should be in user and password parameters. |
| Tenant and account name should be extra field as |
| {“tenant”: “<TENANT>”, “account_name”: “ACCOUNT_NAME”}.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><p><strong>azure_data_lake_conn_id</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – Reference to the Azure Data Lake connection.</p> |
| </dd> |
| </dl> |
| <dl class="method"> |
| <dt id="airflow.contrib.hooks.azure_data_lake_hook.AzureDataLakeHook.get_conn"> |
| <code class="sig-name descname">get_conn</code><span class="sig-paren">(</span><em class="sig-param">self</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/hooks/azure_data_lake_hook.html#AzureDataLakeHook.get_conn"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.hooks.azure_data_lake_hook.AzureDataLakeHook.get_conn" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Return a AzureDLFileSystem object.</p> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.contrib.hooks.azure_data_lake_hook.AzureDataLakeHook.check_for_file"> |
| <code class="sig-name descname">check_for_file</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">file_path</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/hooks/azure_data_lake_hook.html#AzureDataLakeHook.check_for_file"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.hooks.azure_data_lake_hook.AzureDataLakeHook.check_for_file" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Check if a file exists on Azure Data Lake.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><p><strong>file_path</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – Path and name of the file.</p> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p>True if the file exists, False otherwise.</p> |
| </dd> |
| <dt class="field-odd">Return type</dt> |
| <dd class="field-odd"><p><a class="reference external" href="https://docs.python.org/3/library/functions.html#bool" title="(in Python v3.7)">bool</a></p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.contrib.hooks.azure_data_lake_hook.AzureDataLakeHook.upload_file"> |
| <code class="sig-name descname">upload_file</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">local_path</em>, <em class="sig-param">remote_path</em>, <em class="sig-param">nthreads=64</em>, <em class="sig-param">overwrite=True</em>, <em class="sig-param">buffersize=4194304</em>, <em class="sig-param">blocksize=4194304</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/hooks/azure_data_lake_hook.html#AzureDataLakeHook.upload_file"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.hooks.azure_data_lake_hook.AzureDataLakeHook.upload_file" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Upload a file to Azure Data Lake.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>local_path</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – local path. Can be single file, directory (in which case, |
| upload recursively) or glob pattern. Recursive glob patterns using <cite>**</cite> |
| are not supported.</p></li> |
| <li><p><strong>remote_path</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – Remote path to upload to; if multiple files, this is the |
| directory root to write within.</p></li> |
| <li><p><strong>nthreads</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#int" title="(in Python v3.7)"><em>int</em></a>) – Number of threads to use. If None, uses the number of cores.</p></li> |
| <li><p><strong>overwrite</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#bool" title="(in Python v3.7)"><em>bool</em></a>) – Whether to forcibly overwrite existing files/directories. |
| If False and remote path is a directory, will quit regardless if any files |
| would be overwritten or not. If True, only matching filenames are actually |
| overwritten.</p></li> |
| <li><p><strong>buffersize</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#int" title="(in Python v3.7)"><em>int</em></a>) – int [2**22] |
| Number of bytes for internal buffer. This block cannot be bigger than |
| a chunk and cannot be smaller than a block.</p></li> |
| <li><p><strong>blocksize</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#int" title="(in Python v3.7)"><em>int</em></a>) – int [2**22] |
| Number of bytes for a block. Within each chunk, we write a smaller |
| block for each API call. This block cannot be bigger than a chunk.</p></li> |
| </ul> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.contrib.hooks.azure_data_lake_hook.AzureDataLakeHook.download_file"> |
| <code class="sig-name descname">download_file</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">local_path</em>, <em class="sig-param">remote_path</em>, <em class="sig-param">nthreads=64</em>, <em class="sig-param">overwrite=True</em>, <em class="sig-param">buffersize=4194304</em>, <em class="sig-param">blocksize=4194304</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/hooks/azure_data_lake_hook.html#AzureDataLakeHook.download_file"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.hooks.azure_data_lake_hook.AzureDataLakeHook.download_file" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Download a file from Azure Blob Storage.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>local_path</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – local path. If downloading a single file, will write to this |
| specific file, unless it is an existing directory, in which case a file is |
| created within it. If downloading multiple files, this is the root |
| directory to write within. Will create directories as required.</p></li> |
| <li><p><strong>remote_path</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – remote path/globstring to use to find remote files. |
| Recursive glob patterns using <cite>**</cite> are not supported.</p></li> |
| <li><p><strong>nthreads</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#int" title="(in Python v3.7)"><em>int</em></a>) – Number of threads to use. If None, uses the number of cores.</p></li> |
| <li><p><strong>overwrite</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#bool" title="(in Python v3.7)"><em>bool</em></a>) – Whether to forcibly overwrite existing files/directories. |
| If False and remote path is a directory, will quit regardless if any files |
| would be overwritten or not. If True, only matching filenames are actually |
| overwritten.</p></li> |
| <li><p><strong>buffersize</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#int" title="(in Python v3.7)"><em>int</em></a>) – int [2**22] |
| Number of bytes for internal buffer. This block cannot be bigger than |
| a chunk and cannot be smaller than a block.</p></li> |
| <li><p><strong>blocksize</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#int" title="(in Python v3.7)"><em>int</em></a>) – int [2**22] |
| Number of bytes for a block. Within each chunk, we write a smaller |
| block for each API call. This block cannot be bigger than a chunk.</p></li> |
| </ul> |
| </dd> |
| </dl> |
| </dd></dl> |
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