twisted.internet.process.ProcessReader.html [plain text]
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<a href="twisted.html">Package twisted</a> ::
<a href="twisted.internet.html">Package internet</a> ::
<a href="twisted.internet.process.html">Module process</a> ::
Class ProcessReader
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<!-- =========== START OF CLASS DESCRIPTION =========== -->
<h2 class="class">Class ProcessReader</h2>
<pre class="base-tree">
<a href="twisted.persisted.styles.Ephemeral.html"><code>Ephemeral</code></a> --+
|
<a href="twisted.python.log.Logger.html"><code>Logger</code></a> --+
|
<a href="twisted.internet.abstract.FileDescriptor.html"><code>FileDescriptor</code></a> --+
|
<b>ProcessReader</b>
</pre><br />
<hr/>
<p>ProcessReader</p>
I am a selectable representation of a process's output pipe, such as
stdout and stderr.
<hr/>
<!-- =========== START OF METHOD SUMMARY =========== -->
<table class="summary" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white">
<tr bgcolor="#70b0f0" class="summary">
<th colspan="2">Method Summary</th></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.process.ProcessReader.html#__init__" class="summary-sig-name"><code>__init__</code></a>(<span class=summary-sig-arg>self</span>,
<span class=summary-sig-arg>reactor</span>,
<span class=summary-sig-arg>proc</span>,
<span class=summary-sig-arg>name</span>,
<span class=summary-sig-arg>fileno</span>)</span></code>
<br />
Initialize, specifying a process to connect to.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.process.ProcessReader.html#connectionLost" class="summary-sig-name"><code>connectionLost</code></a>(<span class=summary-sig-arg>self</span>,
<span class=summary-sig-arg>reason</span>)</span></code>
<br />
Close my end of the pipe, signal the Process (which signals the
ProcessProtocol).</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><a name="dataReceived"></a><span class="summary-sig"><span class="summary-sig-name">dataReceived</span>(<span class=summary-sig-arg>self</span>,
<span class=summary-sig-arg>data</span>)</span></code>
</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.process.ProcessReader.html#doRead" class="summary-sig-name"><code>doRead</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
<br />
This is called when the pipe becomes readable.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.process.ProcessReader.html#fileno" class="summary-sig-name"><code>fileno</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
<br />
Return the fileno() of my process's stderr.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.process.ProcessReader.html#writeSomeData" class="summary-sig-name"><code>writeSomeData</code></a>(<span class=summary-sig-arg>self</span>,
<span class=summary-sig-arg>data</span>)</span></code>
<br />
Write as much as possible of the given data, immediately.</td></tr>
<tr bgcolor="#e8f0f8" class="group">
<th colspan="2"> Inherited from FileDescriptor</th></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#_postLoseConnection" class="summary-sig-name"><code>_postLoseConnection</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
<br />
Called after a loseConnection(), when all data has been written.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#doWrite" class="summary-sig-name"><code>doWrite</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
<br />
Called when data is available for writing.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#loseConnection" class="summary-sig-name"><code>loseConnection</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
<br />
Close the connection at the next available opportunity.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#pauseProducing" class="summary-sig-name"><code>pauseProducing</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#registerProducer" class="summary-sig-name"><code>registerProducer</code></a>(<span class=summary-sig-arg>self</span>,
<span class=summary-sig-arg>producer</span>,
<span class=summary-sig-arg>streaming</span>)</span></code>
<br />
Register to receive data from a producer.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#resumeProducing" class="summary-sig-name"><code>resumeProducing</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#startReading" class="summary-sig-name"><code>startReading</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
<br />
Start waiting for read availability.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#startWriting" class="summary-sig-name"><code>startWriting</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
<br />
Start waiting for write availability.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#stopConsuming" class="summary-sig-name"><code>stopConsuming</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
<br />
Stop consuming data.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#stopProducing" class="summary-sig-name"><code>stopProducing</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#stopReading" class="summary-sig-name"><code>stopReading</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
<br />
Stop waiting for read availability.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#stopWriting" class="summary-sig-name"><code>stopWriting</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
<br />
Stop waiting for write availability.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#unregisterProducer" class="summary-sig-name"><code>unregisterProducer</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
<br />
Stop consuming data from a producer, without disconnecting.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#write" class="summary-sig-name"><code>write</code></a>(<span class=summary-sig-arg>self</span>,
<span class=summary-sig-arg>data</span>)</span></code>
<br />
Reliably write some data.</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.internet.abstract.FileDescriptor.html#writeSequence" class="summary-sig-name"><code>writeSequence</code></a>(<span class=summary-sig-arg>self</span>,
<span class=summary-sig-arg>iovec</span>)</span></code>
</td></tr>
<tr bgcolor="#e8f0f8" class="group">
<th colspan="2"> Inherited from Logger</th></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.python.log.Logger.html#logPrefix" class="summary-sig-name"><code>logPrefix</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
<br />
Override this method to insert custom logging behavior.</td></tr>
<tr bgcolor="#e8f0f8" class="group">
<th colspan="2"> Inherited from Ephemeral</th></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.persisted.styles.Ephemeral.html#__getstate__" class="summary-sig-name"><code>__getstate__</code></a>(<span class=summary-sig-arg>self</span>)</span></code>
</td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"> </font></td>
<td><code><span class="summary-sig"><a href="twisted.persisted.styles.Ephemeral.html#__setstate__" class="summary-sig-name"><code>__setstate__</code></a>(<span class=summary-sig-arg>self</span>,
<span class=summary-sig-arg>state</span>)</span></code>
</td></tr>
</table><br />
<!-- =========== START OF CLASS VARIABLE SUMMARY =========== -->
<table class="summary" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white">
<tr bgcolor="#70b0f0" class="summary">
<th colspan="2">Class Variable Summary</th></tr>
<tr bgcolor="#e8f0f8" class="group">
<th colspan="2"> Inherited from FileDescriptor</th></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>tuple</code></font></td>
<td><b><a href="twisted.internet.abstract.FileDescriptor.html#__implements__"><code>__implements__</code></a></b> = <span title="(<class twisted.internet.interfaces.IProducer at 0x827b064>, <class twisted.internet.interfaces.IReadWriteDescriptor at 0x827d20c>, <class twisted.internet.interfaces.IConsumer at 0x824feb4>, <class twisted.internet.interfaces.ITransport at 0x8254024>)"><code>(<class twisted.internet.interfaces.IPr<span class="variable-ellipsis">...</span></code>
</span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.internet.abstract.FileDescriptor.html#bufferSize"><code>bufferSize</code></a></b> = <span title="65536">65536 </span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.internet.abstract.FileDescriptor.html#connected"><code>connected</code></a></b> = <span title="0">0 </span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>str</code></font></td>
<td><b><a href="twisted.internet.abstract.FileDescriptor.html#dataBuffer"><code>dataBuffer</code></a></b> = <span title="''"><code><span class="variable-quote">'</span><span class="variable-quote">'</span> </code>
</span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.internet.abstract.FileDescriptor.html#disconnected"><code>disconnected</code></a></b> = <span title="0">0 </span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.internet.abstract.FileDescriptor.html#disconnecting"><code>disconnecting</code></a></b> = <span title="0">0 </span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.internet.abstract.FileDescriptor.html#offset"><code>offset</code></a></b> = <span title="0">0 </span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>NoneType</code></font></td>
<td><b><a href="twisted.internet.abstract.FileDescriptor.html#producer"><code>producer</code></a></b> = <span title="None">None </span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.internet.abstract.FileDescriptor.html#producerPaused"><code>producerPaused</code></a></b> = <span title="0">0 </span></td></tr>
<tr><td align="right" valign="top" width="15%"><font size="-1"><code>int</code></font></td>
<td><b><a href="twisted.internet.abstract.FileDescriptor.html#streamingProducer"><code>streamingProducer</code></a></b> = <span title="0">0 </span></td></tr>
</table><br />
<!-- =========== START OF METHOD DETAILS =========== -->
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<th colspan="2">Method Details</th></tr>
</table>
<a name="__init__"></a>
<table width="100%" class="func-details" bgcolor="#e0e0e0"><tr><td>
<h3><span class="sig"><span class="sig-name">__init__</span>(<span class=sig-arg>self</span>,
<span class=sig-arg>reactor</span>,
<span class=sig-arg>proc</span>,
<span class=sig-arg>name</span>,
<span class=sig-arg>fileno</span>)</span>
<br /><i>(Constructor)</i>
</h3>
Initialize, specifying a process to connect to.
<dl><dt></dt><dd>
<dl><dt><b>Overrides:</b></dt>
<dd><a href="twisted.internet.abstract.FileDescriptor.html#__init__"><code>twisted.internet.abstract.FileDescriptor.__init__</code></a></dd>
</dl>
</dd></dl>
</td></tr></table>
<a name="connectionLost"></a>
<table width="100%" class="func-details" bgcolor="#e0e0e0"><tr><td>
<h3><span class="sig"><span class="sig-name">connectionLost</span>(<span class=sig-arg>self</span>,
<span class=sig-arg>reason</span>)</span>
</h3>
Close my end of the pipe, signal the Process (which signals the
ProcessProtocol).
<dl><dt></dt><dd>
<dl><dt><b>Overrides:</b></dt>
<dd><a href="twisted.internet.abstract.FileDescriptor.html#connectionLost"><code>twisted.internet.abstract.FileDescriptor.connectionLost</code></a></dd>
</dl>
</dd></dl>
</td></tr></table>
<a name="doRead"></a>
<table width="100%" class="func-details" bgcolor="#e0e0e0"><tr><td>
<h3><span class="sig"><span class="sig-name">doRead</span>(<span class=sig-arg>self</span>)</span>
</h3>
This is called when the pipe becomes readable.
<dl><dt></dt><dd>
</dd></dl>
</td></tr></table>
<a name="fileno"></a>
<table width="100%" class="func-details" bgcolor="#e0e0e0"><tr><td>
<h3><span class="sig"><span class="sig-name">fileno</span>(<span class=sig-arg>self</span>)</span>
</h3>
Return the fileno() of my process's stderr.
<dl><dt></dt><dd>
<dl><dt><b>Overrides:</b></dt>
<dd><a href="twisted.internet.abstract.FileDescriptor.html#fileno"><code>twisted.internet.abstract.FileDescriptor.fileno</code></a></dd>
</dl>
</dd></dl>
</td></tr></table>
<a name="writeSomeData"></a>
<table width="100%" class="func-details" bgcolor="#e0e0e0"><tr><td>
<h3><span class="sig"><span class="sig-name">writeSomeData</span>(<span class=sig-arg>self</span>,
<span class=sig-arg>data</span>)</span>
</h3>
<p>Write as much as possible of the given data, immediately.</p>
This is called to invoke the lower-level writing functionality, such
as a socket's send() method, or a file's write(); this method returns
an integer. If positive, it is the number of bytes written; if
negative, it indicates the connection was lost.
<dl><dt></dt><dd>
<dl><dt><b>Overrides:</b></dt>
<dd><a href="twisted.internet.abstract.FileDescriptor.html#writeSomeData"><code>twisted.internet.abstract.FileDescriptor.writeSomeData</code></a> <i>(inherited documentation)</i>
</dd>
</dl>
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