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<a href="CedarBackup2-module.html">Package CedarBackup2</a> ::
<a href="CedarBackup2.extend-module.html">Package extend</a> ::
Module split
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<!-- ==================== MODULE DESCRIPTION ==================== -->
<h1 class="epydoc">Module split</h1><p class="nomargin-top"><span class="codelink"><a href="CedarBackup2.extend.split-pysrc.html">source code</a></span></p>
<p>Provides an extension to split up large files in staging
directories.</p>
<p>When this extension is executed, it will look through the configured
Cedar Backup staging directory for files exceeding a specified size
limit, and split them down into smaller files using the 'split' utility.
Any directory which has already been split (as indicated by the
<code>cback.split</code> file) will be ignored.</p>
<p>This extension requires a new configuration section <split> and
is intended to be run immediately after the standard stage action or
immediately before the standard store action. Aside from its own
configuration, it requires the options and staging configuration sections
in the standard Cedar Backup configuration file.</p>
<hr />
<div class="fields"> <p><strong>Author:</strong>
Kenneth J. Pronovici <pronovic@ieee.org>
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<a href="CedarBackup2.extend.split.SplitConfig-class.html" class="summary-name">SplitConfig</a><br />
Class representing split configuration.
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<a href="CedarBackup2.extend.split.LocalConfig-class.html" class="summary-name">LocalConfig</a><br />
Class representing this extension's configuration document.
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<span class="summary-type"> </span>
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<td><span class="summary-sig"><a href="CedarBackup2.extend.split-module.html#executeAction" class="summary-sig-name">executeAction</a>(<span class="summary-sig-arg">configPath</span>,
<span class="summary-sig-arg">options</span>,
<span class="summary-sig-arg">config</span>)</span><br />
Executes the split backup action.</td>
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<span class="codelink"><a href="CedarBackup2.extend.split-pysrc.html#executeAction">source code</a></span>
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<td><span class="summary-sig"><a href="CedarBackup2.extend.split-module.html#_splitDailyDir" class="summary-sig-name" onclick="show_private();">_splitDailyDir</a>(<span class="summary-sig-arg">dailyDir</span>,
<span class="summary-sig-arg">sizeLimit</span>,
<span class="summary-sig-arg">splitSize</span>,
<span class="summary-sig-arg">backupUser</span>,
<span class="summary-sig-arg">backupGroup</span>)</span><br />
Splits large files in a daily staging directory.</td>
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<span class="codelink"><a href="CedarBackup2.extend.split-pysrc.html#_splitDailyDir">source code</a></span>
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<td><span class="summary-sig"><a href="CedarBackup2.extend.split-module.html#_splitFile" class="summary-sig-name" onclick="show_private();">_splitFile</a>(<span class="summary-sig-arg">sourcePath</span>,
<span class="summary-sig-arg">splitSize</span>,
<span class="summary-sig-arg">backupUser</span>,
<span class="summary-sig-arg">backupGroup</span>,
<span class="summary-sig-arg">removeSource</span>=<span class="summary-sig-default">False</span>)</span><br />
Splits the source file into chunks of the indicated size.</td>
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<span class="codelink"><a href="CedarBackup2.extend.split-pysrc.html#_splitFile">source code</a></span>
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<span class="summary-type"> </span>
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<a name="logger"></a><span class="summary-name">logger</span> = <code title="logging.getLogger("CedarBackup2.log.extend.split")">logging.getLogger("CedarBackup2.log.extend.split")</code>
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<span class="summary-type"> </span>
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<a name="SPLIT_COMMAND"></a><span class="summary-name">SPLIT_COMMAND</span> = <code title="['split']"><code class="variable-group">[</code><code class="variable-quote">'</code><code class="variable-string">split</code><code class="variable-quote">'</code><code class="variable-group">]</code></code>
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<span class="summary-type"> </span>
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<a name="SPLIT_INDICATOR"></a><span class="summary-name">SPLIT_INDICATOR</span> = <code title="'cback.split'"><code class="variable-quote">'</code><code class="variable-string">cback.split</code><code class="variable-quote">'</code></code>
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<a name="__package__"></a><span class="summary-name">__package__</span> = <code title="'CedarBackup2.extend'"><code class="variable-quote">'</code><code class="variable-string">CedarBackup2.extend</code><code class="variable-quote">'</code></code>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">executeAction</span>(<span class="sig-arg">configPath</span>,
<span class="sig-arg">options</span>,
<span class="sig-arg">config</span>)</span>
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<p>Executes the split backup action.</p>
<dl class="fields">
<dt>Parameters:</dt>
<dd><ul class="nomargin-top">
<li><strong class="pname"><code>configPath</code></strong> (String representing a path on disk.) - Path to configuration file on disk.</li>
<li><strong class="pname"><code>options</code></strong> (Options object.) - Program command-line options.</li>
<li><strong class="pname"><code>config</code></strong> (Config object.) - Program configuration.</li>
</ul></dd>
<dt>Raises:</dt>
<dd><ul class="nomargin-top">
<li><code><strong class='fraise'>ValueError</strong></code> - Under many generic error conditions</li>
<li><code><strong class='fraise'>IOError</strong></code> - If there are I/O problems reading or writing files</li>
</ul></dd>
</dl>
</td></tr></table>
</div>
<a name="_splitDailyDir"></a>
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cellspacing="0" width="100%" bgcolor="white">
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<h3 class="epydoc"><span class="sig"><span class="sig-name">_splitDailyDir</span>(<span class="sig-arg">dailyDir</span>,
<span class="sig-arg">sizeLimit</span>,
<span class="sig-arg">splitSize</span>,
<span class="sig-arg">backupUser</span>,
<span class="sig-arg">backupGroup</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="CedarBackup2.extend.split-pysrc.html#_splitDailyDir">source code</a></span>
</td>
</tr></table>
<p>Splits large files in a daily staging directory.</p>
<p>Files that match INDICATOR_PATTERNS (i.e.
<code>"cback.store"</code>,
<code>"cback.stage"</code>, etc.) are assumed to be indicator
files and are ignored. All other files are split.</p>
<dl class="fields">
<dt>Parameters:</dt>
<dd><ul class="nomargin-top">
<li><strong class="pname"><code>dailyDir</code></strong> - Daily directory to encrypt</li>
<li><strong class="pname"><code>sizeLimit</code></strong> - Size limit, in bytes</li>
<li><strong class="pname"><code>splitSize</code></strong> - Split size, in bytes</li>
<li><strong class="pname"><code>backupUser</code></strong> - User that target files should be owned by</li>
<li><strong class="pname"><code>backupGroup</code></strong> - Group that target files should be owned by</li>
</ul></dd>
<dt>Raises:</dt>
<dd><ul class="nomargin-top">
<li><code><strong class='fraise'>ValueError</strong></code> - If the encrypt mode is not supported.</li>
<li><code><strong class='fraise'>ValueError</strong></code> - If the daily staging directory does not exist.</li>
</ul></dd>
</dl>
</td></tr></table>
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<a name="_splitFile"></a>
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cellspacing="0" width="100%" bgcolor="white">
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<h3 class="epydoc"><span class="sig"><span class="sig-name">_splitFile</span>(<span class="sig-arg">sourcePath</span>,
<span class="sig-arg">splitSize</span>,
<span class="sig-arg">backupUser</span>,
<span class="sig-arg">backupGroup</span>,
<span class="sig-arg">removeSource</span>=<span class="sig-default">False</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="CedarBackup2.extend.split-pysrc.html#_splitFile">source code</a></span>
</td>
</tr></table>
<p>Splits the source file into chunks of the indicated size.</p>
<p>The split files will be owned by the indicated backup user and group.
If <code>removeSource</code> is <code>True</code>, then the source file
will be removed after it is successfully split.</p>
<dl class="fields">
<dt>Parameters:</dt>
<dd><ul class="nomargin-top">
<li><strong class="pname"><code>sourcePath</code></strong> - Absolute path of the source file to split</li>
<li><strong class="pname"><code>splitSize</code></strong> - Encryption mode (only "gpg" is allowed)</li>
<li><strong class="pname"><code>backupUser</code></strong> - User that target files should be owned by</li>
<li><strong class="pname"><code>backupGroup</code></strong> - Group that target files should be owned by</li>
<li><strong class="pname"><code>removeSource</code></strong> - Indicates whether to remove the source file</li>
</ul></dd>
<dt>Raises:</dt>
<dd><ul class="nomargin-top">
<li><code><strong class='fraise'>IOError</strong></code> - If there is a problem accessing, splitting or removing the source
file.</li>
</ul></dd>
</dl>
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