src/eric7/Documentation/Source/eric7.RemoteServer.EricServer.html

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<h1>eric7.RemoteServer.EricServer</h1>
<p>
Module implementing the eric remote server.
</p>

<h3>Global Attributes</h3>
<table>
<tr><td>None</td></tr>
</table>

<h3>Classes</h3>
<table>
<tr>
<td><a href="#EricServer">EricServer</a></td>
<td>Class implementing the eric remote server.</td>
</tr>
</table>

<h3>Functions</h3>
<table>
<tr><td>None</td></tr>
</table>

<hr />
<hr />
<a NAME="EricServer" ID="EricServer"></a>
<h2>EricServer</h2>
<p>
    Class implementing the eric remote server.
</p>

<h3>Derived from</h3>
None
<h3>Class Attributes</h3>
<table>
<tr><td>None</td></tr>
</table>

<h3>Class Methods</h3>
<table>
<tr><td>None</td></tr>
</table>

<h3>Methods</h3>
<table>
<tr>
<td><a href="#EricServer.__init__">EricServer</a></td>
<td>Constructor</td>
</tr>
<tr>
<td><a href="#EricServer.__acceptIdeConnection">__acceptIdeConnection</a></td>
<td>Private method to accept the connection on the listening IDE server socket.</td>
</tr>
<tr>
<td><a href="#EricServer.__closeIdeConnection">__closeIdeConnection</a></td>
<td>Private method to close the connection to an eric-ide.</td>
</tr>
<tr>
<td><a href="#EricServer.__handleEchoRequest">__handleEchoRequest</a></td>
<td>Private method to handle an 'Echo' request.</td>
</tr>
<tr>
<td><a href="#EricServer.__handleRequest">__handleRequest</a></td>
<td>Private method handling or dispatching the received requests.</td>
</tr>
<tr>
<td><a href="#EricServer.__handleServerRequest">__handleServerRequest</a></td>
<td>Private method to handle a 'Server' request.</td>
</tr>
<tr>
<td><a href="#EricServer.__initializeIdeSocket">__initializeIdeSocket</a></td>
<td>Private method to initialize and register the eric-ide server socket.</td>
</tr>
<tr>
<td><a href="#EricServer.__receiveBytes">__receiveBytes</a></td>
<td>Private method to receive the given length of bytes.</td>
</tr>
<tr>
<td><a href="#EricServer.__receiveJson">__receiveJson</a></td>
<td>Private method to receive a JSON encoded command and data from the server.</td>
</tr>
<tr>
<td><a href="#EricServer.__registerInternalHandlers">__registerInternalHandlers</a></td>
<td>Private method to register request handler categories of this class.</td>
</tr>
<tr>
<td><a href="#EricServer.__serviceIdeConnection">__serviceIdeConnection</a></td>
<td>Private method to service the eric-ide connection.</td>
</tr>
<tr>
<td><a href="#EricServer.__shutdown">__shutdown</a></td>
<td>Private method to shut down the server.</td>
</tr>
<tr>
<td><a href="#EricServer.__unregisterIdeSocket">__unregisterIdeSocket</a></td>
<td>Private method to unregister the eric-ide server socket because only one connection is allowed.</td>
</tr>
<tr>
<td><a href="#EricServer.getSelector">getSelector</a></td>
<td>Public method to get a reference to the selector object.</td>
</tr>
<tr>
<td><a href="#EricServer.isSocketClosed">isSocketClosed</a></td>
<td>Public method to check, if a given socket is closed.</td>
</tr>
<tr>
<td><a href="#EricServer.receiveJsonCommand">receiveJsonCommand</a></td>
<td>Public method to receive a JSON encoded command and data.</td>
</tr>
<tr>
<td><a href="#EricServer.registerRequestHandler">registerRequestHandler</a></td>
<td>Public method to register a request handler method for the given request category.</td>
</tr>
<tr>
<td><a href="#EricServer.run">run</a></td>
<td>Public method implementing the remote server main loop.</td>
</tr>
<tr>
<td><a href="#EricServer.sendJson">sendJson</a></td>
<td>Public method to send a single refactoring command to the server.</td>
</tr>
<tr>
<td><a href="#EricServer.sendJsonCommand">sendJsonCommand</a></td>
<td>Public method to send a JSON encoded command/response via a given socket.</td>
</tr>
<tr>
<td><a href="#EricServer.unregisterRequestHandler">unregisterRequestHandler</a></td>
<td>Public method to unregister a handler for the given request category.</td>
</tr>
</table>

<h3>Static Methods</h3>
<table>
<tr><td>None</td></tr>
</table>


<a NAME="EricServer.__init__" ID="EricServer.__init__"></a>
<h4>EricServer (Constructor)</h4>
<b>EricServer</b>(<i>port=42024, useIPv6=False</i>)
<p>
        Constructor
</p>

<dl>

<dt><i>port</i> (int (optional))</dt>
<dd>
port to listen on (defaults to 42024)
</dd>
<dt><i>useIPv6</i> (bool (optional))</dt>
<dd>
flag indicating to use IPv6 protocol (defaults to False)
</dd>
</dl>
<a NAME="EricServer.__acceptIdeConnection" ID="EricServer.__acceptIdeConnection"></a>
<h4>EricServer.__acceptIdeConnection</h4>
<b>__acceptIdeConnection</b>(<i>sock</i>)
<p>
        Private method to accept the connection on the listening IDE server socket.
</p>

<dl>

<dt><i>sock</i> (socket.socket)</dt>
<dd>
reference to the listening socket
</dd>
</dl>
<a NAME="EricServer.__closeIdeConnection" ID="EricServer.__closeIdeConnection"></a>
<h4>EricServer.__closeIdeConnection</h4>
<b>__closeIdeConnection</b>(<i>shutdown=False</i>)
<p>
        Private method to close the connection to an eric-ide.
</p>

<dl>

<dt><i>shutdown</i> (bool)</dt>
<dd>
flag indicating a shutdown process
</dd>
</dl>
<a NAME="EricServer.__handleEchoRequest" ID="EricServer.__handleEchoRequest"></a>
<h4>EricServer.__handleEchoRequest</h4>
<b>__handleEchoRequest</b>(<i>request, params, reqestUuid</i>)
<p>
        Private method to handle an 'Echo' request.
</p>

<dl>

<dt><i>request</i> (str)</dt>
<dd>
request name
</dd>
<dt><i>params</i> (dict)</dt>
<dd>
request parameters
</dd>
<dt><i>reqestUuid</i> (str)</dt>
<dd>
UUID of the associated request as sent by the eric IDE
            (defaults to "", i.e. no UUID received)
</dd>
</dl>
<a NAME="EricServer.__handleRequest" ID="EricServer.__handleRequest"></a>
<h4>EricServer.__handleRequest</h4>
<b>__handleRequest</b>(<i>category, request, params, reqestUuid</i>)
<p>
        Private method handling or dispatching the received requests.
</p>

<dl>

<dt><i>category</i> (EricRequestCategory)</dt>
<dd>
category of the request
</dd>
<dt><i>request</i> (str)</dt>
<dd>
request name
</dd>
<dt><i>params</i> (dict)</dt>
<dd>
request parameters
</dd>
<dt><i>reqestUuid</i> (str)</dt>
<dd>
UUID of the associated request as sent by the eric IDE
</dd>
</dl>
<a NAME="EricServer.__handleServerRequest" ID="EricServer.__handleServerRequest"></a>
<h4>EricServer.__handleServerRequest</h4>
<b>__handleServerRequest</b>(<i>request, params, reqestUuid</i>)
<p>
        Private method to handle a 'Server' request.
</p>

<dl>

<dt><i>request</i> (str)</dt>
<dd>
request name
</dd>
<dt><i>params</i> (dict)</dt>
<dd>
request parameters
</dd>
<dt><i>reqestUuid</i> (str)</dt>
<dd>
UUID of the associated request as sent by the eric IDE
            (defaults to "", i.e. no UUID received)
</dd>
</dl>
<a NAME="EricServer.__initializeIdeSocket" ID="EricServer.__initializeIdeSocket"></a>
<h4>EricServer.__initializeIdeSocket</h4>
<b>__initializeIdeSocket</b>(<i></i>)
<p>
        Private method to initialize and register the eric-ide server socket.
</p>

<a NAME="EricServer.__receiveBytes" ID="EricServer.__receiveBytes"></a>
<h4>EricServer.__receiveBytes</h4>
<b>__receiveBytes</b>(<i>length, sock</i>)
<p>
        Private method to receive the given length of bytes.
</p>

<dl>

<dt><i>length</i> (int)</dt>
<dd>
bytes to receive
</dd>
<dt><i>sock</i> (socket.socket)</dt>
<dd>
reference to the socket to receive the data from
</dd>
</dl>
<dl>
<dt>Return:</dt>
<dd>
received bytes or None if connection closed
</dd>
</dl>
<dl>
<dt>Return Type:</dt>
<dd>
bytes
</dd>
</dl>
<a NAME="EricServer.__receiveJson" ID="EricServer.__receiveJson"></a>
<h4>EricServer.__receiveJson</h4>
<b>__receiveJson</b>(<i></i>)
<p>
        Private method to receive a JSON encoded command and data from the
        server.
</p>

<dl>
<dt>Return:</dt>
<dd>
tuple containing the received service category, the command,
            a dictionary containing the associated data and the UUID of the
            request
</dd>
</dl>
<dl>
<dt>Return Type:</dt>
<dd>
tuple of (int, str, dict, str)
</dd>
</dl>
<a NAME="EricServer.__registerInternalHandlers" ID="EricServer.__registerInternalHandlers"></a>
<h4>EricServer.__registerInternalHandlers</h4>
<b>__registerInternalHandlers</b>(<i></i>)
<p>
        Private method to register request handler categories of this class.
</p>

<a NAME="EricServer.__serviceIdeConnection" ID="EricServer.__serviceIdeConnection"></a>
<h4>EricServer.__serviceIdeConnection</h4>
<b>__serviceIdeConnection</b>(<i>key</i>)
<p>
        Private method to service the eric-ide connection.
</p>

<dl>

<dt><i>key</i> (selectors.SelectorKey)</dt>
<dd>
reference to the SelectorKey object associated with the connection
            to be serviced
</dd>
</dl>
<a NAME="EricServer.__shutdown" ID="EricServer.__shutdown"></a>
<h4>EricServer.__shutdown</h4>
<b>__shutdown</b>(<i></i>)
<p>
        Private method to shut down the server.
</p>

<a NAME="EricServer.__unregisterIdeSocket" ID="EricServer.__unregisterIdeSocket"></a>
<h4>EricServer.__unregisterIdeSocket</h4>
<b>__unregisterIdeSocket</b>(<i></i>)
<p>
        Private method to unregister the eric-ide server socket because only one
        connection is allowed.
</p>

<a NAME="EricServer.getSelector" ID="EricServer.getSelector"></a>
<h4>EricServer.getSelector</h4>
<b>getSelector</b>(<i></i>)
<p>
        Public method to get a reference to the selector object.
</p>

<dl>
<dt>Return:</dt>
<dd>
reference to the selector object
</dd>
</dl>
<dl>
<dt>Return Type:</dt>
<dd>
selectors.BaseSelector
</dd>
</dl>
<a NAME="EricServer.isSocketClosed" ID="EricServer.isSocketClosed"></a>
<h4>EricServer.isSocketClosed</h4>
<b>isSocketClosed</b>(<i>sock</i>)
<p>
        Public method to check, if a given socket is closed.
</p>

<dl>

<dt><i>sock</i> (socket.socket)</dt>
<dd>
reference to the socket to be checked
</dd>
</dl>
<dl>
<dt>Return:</dt>
<dd>
flag indicating a closed state
</dd>
</dl>
<dl>
<dt>Return Type:</dt>
<dd>
bool
</dd>
</dl>
<a NAME="EricServer.receiveJsonCommand" ID="EricServer.receiveJsonCommand"></a>
<h4>EricServer.receiveJsonCommand</h4>
<b>receiveJsonCommand</b>(<i>sock</i>)
<p>
        Public method to receive a JSON encoded command and data.
</p>

<dl>

<dt><i>sock</i> (socket.socket)</dt>
<dd>
reference to the socket to receive the data from
</dd>
</dl>
<dl>
<dt>Return:</dt>
<dd>
dictionary containing the JSON command data or None to signal
            an issue while receiving data
</dd>
</dl>
<dl>
<dt>Return Type:</dt>
<dd>
dict
</dd>
</dl>
<a NAME="EricServer.registerRequestHandler" ID="EricServer.registerRequestHandler"></a>
<h4>EricServer.registerRequestHandler</h4>
<b>registerRequestHandler</b>(<i>requestCategory, handler</i>)
<p>
        Public method to register a request handler method for the given request
        category.
</p>

<dl>

<dt><i>requestCategory</i> (EricRequestCategory or int (>= EricRequestCategory.UserCategory))</dt>
<dd>
request category to be registered
</dd>
<dt><i>handler</i> (function(request:str, params:dict, requestUuid:str))</dt>
<dd>
reference to the handler method. This handler must accept
            the parameters 'request', 'params', and 'requestUuid'
</dd>
</dl>
<dl>

<dt>Raises <b>ValueError</b>:</dt>
<dd>
raised to signal a request category collision
</dd>
</dl>
<a NAME="EricServer.run" ID="EricServer.run"></a>
<h4>EricServer.run</h4>
<b>run</b>(<i></i>)
<p>
        Public method implementing the remote server main loop.
</p>
<p>
        Exiting the inner loop, that receives and dispatches the requests, will
        cause the server to stop and exit. The main loop handles these requests.
        <ul>
        <li>exit - exit the handler loop and wait for the next connection</li>
        <li>shutdown - exit the handler loop and perform a clean shutdown</li>
        </ul>
</p>

<dl>
<dt>Return:</dt>
<dd>
flag indicating a clean shutdown
</dd>
</dl>
<dl>
<dt>Return Type:</dt>
<dd>
bool
</dd>
</dl>
<a NAME="EricServer.sendJson" ID="EricServer.sendJson"></a>
<h4>EricServer.sendJson</h4>
<b>sendJson</b>(<i>category, reply, params, reqestUuid=""</i>)
<p>
        Public method to send a single refactoring command to the server.
</p>

<dl>

<dt><i>category</i> (EricRequestCategory)</dt>
<dd>
service category
</dd>
<dt><i>reply</i> (str)</dt>
<dd>
reply name to be sent
</dd>
<dt><i>params</i> (dict)</dt>
<dd>
dictionary of named parameters for the request
</dd>
<dt><i>reqestUuid</i> (str)</dt>
<dd>
UUID of the associated request as sent by the eric IDE
            (defaults to "", i.e. no UUID received)
</dd>
</dl>
<a NAME="EricServer.sendJsonCommand" ID="EricServer.sendJsonCommand"></a>
<h4>EricServer.sendJsonCommand</h4>
<b>sendJsonCommand</b>(<i>jsonCommand, sock</i>)
<p>
        Public method to send a JSON encoded command/response via a given socket.
</p>

<dl>

<dt><i>jsonCommand</i> (dict or str)</dt>
<dd>
dictionary containing the command data or a JSON encoded
            command string
</dd>
<dt><i>sock</i> (socket.socket)</dt>
<dd>
reference to the socket to send the data to
</dd>
</dl>
<dl>
<dt>Return:</dt>
<dd>
flag indicating a successful transmission
</dd>
</dl>
<dl>
<dt>Return Type:</dt>
<dd>
bool
</dd>
</dl>
<a NAME="EricServer.unregisterRequestHandler" ID="EricServer.unregisterRequestHandler"></a>
<h4>EricServer.unregisterRequestHandler</h4>
<b>unregisterRequestHandler</b>(<i>requestCategory, ignoreError=False</i>)
<p>
        Public method to unregister a handler for the given request category.
</p>
<p>
        Note: This method will raise a KeyError exception in case the request
        category has not been registered and ignoreError is False (the default).
</p>

<dl>

<dt><i>requestCategory</i> (EricRequestCategory or int (>= EricRequestCategory.UserCategory))</dt>
<dd>
request category to be unregistered
</dd>
<dt><i>ignoreError</i> (bool (optional))</dt>
<dd>
flag indicating to ignore errors (defaults to False)
</dd>
</dl>
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