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| <div class="section" id="module-apache_beam.io.filesystems"> |
| <span id="apache-beam-io-filesystems-module"></span><h1>apache_beam.io.filesystems module<a class="headerlink" href="#module-apache_beam.io.filesystems" title="Permalink to this headline">¶</a></h1> |
| <p>FileSystems interface class for accessing the correct filesystem</p> |
| <dl class="class"> |
| <dt id="apache_beam.io.filesystems.FileSystems"> |
| <em class="property">class </em><code class="descclassname">apache_beam.io.filesystems.</code><code class="descname">FileSystems</code><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Bases: <a class="reference external" href="https://docs.python.org/3/library/functions.html#object" title="(in Python v3.10)"><code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code></a></p> |
| <p>A class that defines the functions that can be performed on a filesystem. |
| All methods are static and access the underlying registered filesystems.</p> |
| <dl class="attribute"> |
| <dt id="apache_beam.io.filesystems.FileSystems.URI_SCHEMA_PATTERN"> |
| <code class="descname">URI_SCHEMA_PATTERN</code><em class="property"> = re.compile('(?P<scheme>[a-zA-Z][-a-zA-Z0-9+.]*)://.*')</em><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.URI_SCHEMA_PATTERN" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="classmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.set_options"> |
| <em class="property">classmethod </em><code class="descname">set_options</code><span class="sig-paren">(</span><em>pipeline_options</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.set_options"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.set_options" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Set filesystem options.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>pipeline_options</strong> – Instance of <code class="docutils literal notranslate"><span class="pre">PipelineOptions</span></code>.</td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.get_scheme"> |
| <em class="property">static </em><code class="descname">get_scheme</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.get_scheme"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.get_scheme" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.get_filesystem"> |
| <em class="property">static </em><code class="descname">get_filesystem</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.get_filesystem"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.get_filesystem" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Get the correct filesystem for the specified path</p> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.join"> |
| <em class="property">static </em><code class="descname">join</code><span class="sig-paren">(</span><em>basepath</em>, <em>*paths</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.join"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.join" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Join two or more pathname components for the filesystem</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple"> |
| <li><strong>basepath</strong> – string path of the first component of the path</li> |
| <li><strong>paths</strong> – path components to be added</li> |
| </ul> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <p>Returns: full path after combining all the passed components</p> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.split"> |
| <em class="property">static </em><code class="descname">split</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.split"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.split" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Splits the given path into two parts.</p> |
| <p>Splits the path into a pair (head, tail) such that tail contains the last |
| component of the path and head contains everything up to that.</p> |
| <p>For file-systems other than the local file-system, head should include the |
| prefix.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>path</strong> – path as a string</td> |
| </tr> |
| <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">a pair of path components as strings.</td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.mkdirs"> |
| <em class="property">static </em><code class="descname">mkdirs</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.mkdirs"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.mkdirs" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Recursively create directories for the provided path.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>path</strong> – string path of the directory structure that should be created</td> |
| </tr> |
| <tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><a class="reference external" href="https://docs.python.org/3/library/exceptions.html#IOError" title="(in Python v3.10)"><code class="xref py py-exc docutils literal notranslate"><span class="pre">IOError</span></code></a> – if leaf directory already exists.</td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.match"> |
| <em class="property">static </em><code class="descname">match</code><span class="sig-paren">(</span><em>patterns</em>, <em>limits=None</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.match"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.match" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Find all matching paths to the patterns provided.</p> |
| <p>Pattern matching is done using each filesystem’s <code class="docutils literal notranslate"><span class="pre">match</span></code> method (e.g. |
| <a class="reference internal" href="apache_beam.io.filesystem.html#apache_beam.io.filesystem.FileSystem.match" title="apache_beam.io.filesystem.FileSystem.match"><code class="xref py py-meth docutils literal notranslate"><span class="pre">filesystem.FileSystem.match()</span></code></a>).</p> |
| <div class="admonition note"> |
| <p class="first admonition-title">Note</p> |
| <ul class="last simple"> |
| <li>Depending on the <a class="reference internal" href="apache_beam.io.filesystem.html#apache_beam.io.filesystem.FileSystem" title="apache_beam.io.filesystem.FileSystem"><code class="xref py py-class docutils literal notranslate"><span class="pre">FileSystem</span></code></a> implementation, file listings |
| (the <code class="docutils literal notranslate"><span class="pre">.FileSystem._list</span></code> method) may not be recursive.</li> |
| <li>If the file listing is not recursive, a pattern like |
| <code class="docutils literal notranslate"><span class="pre">scheme://path/*/foo</span></code> will not be able to mach any files.</li> |
| </ul> |
| </div> |
| <div class="admonition seealso"> |
| <p class="first admonition-title">See also</p> |
| <p class="last"><a class="reference internal" href="apache_beam.io.filesystem.html#apache_beam.io.filesystem.FileSystem.match" title="apache_beam.io.filesystem.FileSystem.match"><code class="xref py py-meth docutils literal notranslate"><span class="pre">filesystem.FileSystem.match()</span></code></a></p> |
| </div> |
| <dl class="docutils"> |
| <dt>Pattern syntax:</dt> |
| <dd><p class="first">The pattern syntax is based on the <a class="reference external" href="https://docs.python.org/2/library/fnmatch.html">fnmatch</a> syntax, with the following |
| differences:</p> |
| <ul class="last simple"> |
| <li><code class="docutils literal notranslate"><span class="pre">*</span></code> Is equivalent to <code class="docutils literal notranslate"><span class="pre">[^/\]*</span></code> rather than <code class="docutils literal notranslate"><span class="pre">.*</span></code>.</li> |
| <li><code class="docutils literal notranslate"><span class="pre">**</span></code> Is equivalent to <code class="docutils literal notranslate"><span class="pre">.*</span></code>.</li> |
| </ul> |
| </dd> |
| </dl> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple"> |
| <li><strong>patterns</strong> – list of string for the file path pattern to match against</li> |
| <li><strong>limits</strong> – list of maximum number of responses that need to be fetched</li> |
| </ul> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <p>Returns: list of <code class="docutils literal notranslate"><span class="pre">MatchResult</span></code> objects.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Raises:</th><td class="field-body"><code class="docutils literal notranslate"><span class="pre">BeamIOError</span></code> – if any of the pattern match operations fail</td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.create"> |
| <em class="property">static </em><code class="descname">create</code><span class="sig-paren">(</span><em>path</em>, <em>mime_type='application/octet-stream'</em>, <em>compression_type='auto'</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.create"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.create" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Returns a write channel for the given file path.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple"> |
| <li><strong>path</strong> – string path of the file object to be written to the system</li> |
| <li><strong>mime_type</strong> – MIME type to specify the type of content in the file object</li> |
| <li><strong>compression_type</strong> – Type of compression to be used for this object. See |
| <code class="docutils literal notranslate"><span class="pre">CompressionTypes</span></code> for possible values.</li> |
| </ul> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <p>Returns: file handle with a <code class="docutils literal notranslate"><span class="pre">close</span></code> function for the user to use.</p> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.open"> |
| <em class="property">static </em><code class="descname">open</code><span class="sig-paren">(</span><em>path</em>, <em>mime_type='application/octet-stream'</em>, <em>compression_type='auto'</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.open"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.open" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Returns a read channel for the given file path.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple"> |
| <li><strong>path</strong> – string path of the file object to be written to the system</li> |
| <li><strong>mime_type</strong> – MIME type to specify the type of content in the file object</li> |
| <li><strong>compression_type</strong> – Type of compression to be used for this object. See |
| <code class="docutils literal notranslate"><span class="pre">CompressionTypes</span></code> for possible values.</li> |
| </ul> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <p>Returns: file handle with a <code class="docutils literal notranslate"><span class="pre">close</span></code> function for the user to use.</p> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.copy"> |
| <em class="property">static </em><code class="descname">copy</code><span class="sig-paren">(</span><em>source_file_names</em>, <em>destination_file_names</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.copy"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.copy" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Recursively copy the file list from the source to the destination</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> |
| <li><strong>source_file_names</strong> – list of source file objects that needs to be copied</li> |
| <li><strong>destination_file_names</strong> – list of destination of the new object</li> |
| </ul> |
| </td> |
| </tr> |
| <tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><p class="first last"><code class="docutils literal notranslate"><span class="pre">BeamIOError</span></code> – if any of the copy operations fail</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.rename"> |
| <em class="property">static </em><code class="descname">rename</code><span class="sig-paren">(</span><em>source_file_names</em>, <em>destination_file_names</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.rename"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.rename" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Rename the files at the source list to the destination list. |
| Source and destination lists should be of the same size.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> |
| <li><strong>source_file_names</strong> – List of file paths that need to be moved</li> |
| <li><strong>destination_file_names</strong> – List of destination_file_names for the files</li> |
| </ul> |
| </td> |
| </tr> |
| <tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><p class="first last"><code class="docutils literal notranslate"><span class="pre">BeamIOError</span></code> – if any of the rename operations fail</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.exists"> |
| <em class="property">static </em><code class="descname">exists</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.exists"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.exists" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Check if the provided path exists on the FileSystem.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>path</strong> – string path that needs to be checked.</td> |
| </tr> |
| </tbody> |
| </table> |
| <p>Returns: boolean flag indicating if path exists</p> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.last_updated"> |
| <em class="property">static </em><code class="descname">last_updated</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.last_updated"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.last_updated" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Get UNIX Epoch time in seconds on the FileSystem.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>path</strong> – string path of file.</td> |
| </tr> |
| </tbody> |
| </table> |
| <p>Returns: float UNIX Epoch time</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Raises:</th><td class="field-body"><code class="docutils literal notranslate"><span class="pre">BeamIOError</span></code> – if path doesn’t exist.</td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.checksum"> |
| <em class="property">static </em><code class="descname">checksum</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.checksum"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.checksum" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Fetch checksum metadata of a file on the |
| <a class="reference internal" href="apache_beam.io.filesystem.html#apache_beam.io.filesystem.FileSystem" title="apache_beam.io.filesystem.FileSystem"><code class="xref py py-class docutils literal notranslate"><span class="pre">FileSystem</span></code></a>.</p> |
| <p>This operation returns checksum metadata as stored in the underlying |
| FileSystem. It should not read any file data. Checksum type and format are |
| FileSystem dependent and are not compatible between FileSystems.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>path</strong> – string path of a file.</td> |
| </tr> |
| </tbody> |
| </table> |
| <p>Returns: string containing checksum</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Raises:</th><td class="field-body"><code class="docutils literal notranslate"><span class="pre">BeamIOError</span></code> – if path isn’t a file or doesn’t exist.</td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.delete"> |
| <em class="property">static </em><code class="descname">delete</code><span class="sig-paren">(</span><em>paths</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.delete"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.delete" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Deletes files or directories at the provided paths. |
| Directories will be deleted recursively.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>paths</strong> – list of paths that give the file objects to be deleted</td> |
| </tr> |
| <tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><code class="docutils literal notranslate"><span class="pre">BeamIOError</span></code> – if any of the delete operations fail</td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="apache_beam.io.filesystems.FileSystems.get_chunk_size"> |
| <em class="property">static </em><code class="descname">get_chunk_size</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/filesystems.html#FileSystems.get_chunk_size"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.filesystems.FileSystems.get_chunk_size" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Get the correct chunk size for the FileSystem.</p> |
| <table class="docutils field-list" frame="void" rules="none"> |
| <col class="field-name" /> |
| <col class="field-body" /> |
| <tbody valign="top"> |
| <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>path</strong> – string path that needs to be checked.</td> |
| </tr> |
| </tbody> |
| </table> |
| <p>Returns: integer size for parallelization in the FS operations.</p> |
| </dd></dl> |
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