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#
# BitBake Base Server Code
#
# Copyright (C) 2006 - 2007 Michael 'Mickey' Lauer
# Copyright (C) 2006 - 2008 Richard Purdie
# Copyright (C) 2013 Alexandru Damian
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
""" Base code for Bitbake server process
Have a common base for that all Bitbake server classes ensures a consistent
approach to the interface, and minimize risks associated with code duplication.
"""
""" BaseImplServer() the base class for all XXServer() implementations.
These classes contain the actual code that runs the server side, i.e.
listens for the commands and executes them. Although these implementations
contain all the data of the original bitbake command, i.e the cooker instance,
they may well run on a different process or even machine.
"""
class BaseImplServer():
def __init__(self):
self._idlefuns = {}
def addcooker(self, cooker):
self.cooker = cooker
def register_idle_function(self, function, data):
"""Register a function to be called while the server is idle"""
assert hasattr(function, '__call__')
self._idlefuns[function] = data
""" BitBakeBaseServerConnection class is the common ancestor to all
BitBakeServerConnection classes.
These classes control the remote server. The only command currently
implemented is the terminate() command.
"""
class BitBakeBaseServerConnection():
def __init__(self, serverImpl):
pass
def terminate(self):
pass
def setupEventQueue(self):
pass
""" BitBakeBaseServer class is the common ancestor to all Bitbake servers
Derive this class in order to implement a BitBakeServer which is the
controlling stub for the actual server implementation
"""
class BitBakeBaseServer(object):
def initServer(self):
self.serverImpl = None # we ensure a runtime crash if not overloaded
self.connection = None
return
def addcooker(self, cooker):
self.cooker = cooker
self.serverImpl.addcooker(cooker)
def getServerIdleCB(self):
return self.serverImpl.register_idle_function
def saveConnectionDetails(self):
return
def detach(self):
return
def establishConnection(self, featureset):
raise "Must redefine the %s.establishConnection()" % self.__class__.__name__
def endSession(self):
self.connection.terminate()
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