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# *****************************************************************************
# * Copyright (c) 2011, 2013 Wind River Systems, Inc. and others.
# * All rights reserved. This program and the accompanying materials
# * are made available under the terms of the Eclipse Public License v1.0
# * which accompanies this distribution, and is available at
# * http://www.eclipse.org/legal/epl-v10.html
# *
# * Contributors:
# * Wind River Systems - initial API and implementation
# *****************************************************************************
from .. import processes
from ... import channel
from ...channel.Command import Command
class ProcessContext(processes.ProcessContext):
def __init__(self, service, props):
super(ProcessContext, self).__init__(props)
self.service = service
def attach(self, done):
return self._command("attach", done)
def detach(self, done):
return self._command("detach", done)
def terminate(self, done):
return self._command("terminate", done)
def _command(self, command, done):
service = self.service
done = service._makeCallback(done)
contextID = self.getID()
class _Command(Command):
def __init__(self):
super(_Command, self).__init__(service.channel, service,
command, (contextID,))
def done(self, error, args):
if not error:
assert len(args) == 1
error = self.toError(args[0])
done.doneCommand(self.token, error)
return _Command().token
class ProcessesProxy(processes.ProcessesService):
def __init__(self, channel):
self.channel = channel
self.listeners = {}
def getChildren(self, parent_context_id, attached_only, done):
done = self._makeCallback(done)
service = self
class GetChildrenCommand(Command):
def __init__(self):
super(GetChildrenCommand, self).__init__(service.channel,
service,
"getChildren",
(parent_context_id,
attached_only))
def done(self, error, args):
contexts = None
if not error:
assert len(args) == 2
error = self.toError(args[0])
contexts = args[1]
done.doneGetChildren(self.token, error, contexts)
return GetChildrenCommand().token
def getContext(self, context_id, done):
done = self._makeCallback(done)
service = self
class GetContextCommand(Command):
def __init__(self):
super(GetContextCommand, self).__init__(service.channel,
service, "getContext",
(context_id,))
def done(self, error, args):
ctx = None
if not error:
assert len(args) == 2
error = self.toError(args[0])
if args[1]:
ctx = ProcessContext(service, args[1])
done.doneGetContext(self.token, error, ctx)
return GetContextCommand().token
def getEnvironment(self, done):
done = self._makeCallback(done)
service = self
class GetEnvCommand(Command):
def __init__(self):
super(GetEnvCommand, self).__init__(service.channel, service,
"getEnvironment", None)
def done(self, error, args):
env = None
if not error:
assert len(args) == 2
error = self.toError(args[0])
env = _toEnvMap(args[1])
done.doneGetEnvironment(self.token, error, env)
return GetEnvCommand().token
def start(self, directory, filePath, command_line, environment, attach,
done):
done = self._makeCallback(done)
service = self
env = _toEnvStringArray(environment)
class StartCommand(Command):
def __init__(self):
super(StartCommand, self).__init__(service.channel, service,
"start",
(directory, filePath,
command_line, env, attach))
def done(self, error, args):
ctx = None
if not error:
assert len(args) == 2
error = self.toError(args[0])
if args[1]:
ctx = ProcessContext(service, args[1])
done.doneStart(self.token, error, ctx)
return StartCommand().token
def getSignalList(self, context_id, done):
done = self._makeCallback(done)
service = self
class GetSignalsCommand(Command):
def __init__(self):
super(GetSignalsCommand, self).__init__(service.channel,
service,
"getSignalList",
(context_id,))
def done(self, error, args):
lst = None
if not error:
assert len(args) == 2
error = self.toError(args[0])
lst = args[1]
done.doneGetSignalList(self.token, error, lst)
return GetSignalsCommand().token
def getSignalMask(self, context_id, done):
done = self._makeCallback(done)
service = self
class GetSignalMaskCommand(Command):
def __init__(self):
super(GetSignalMaskCommand, self).__init__(service.channel,
service,
"getSignalMask",
(context_id,))
def done(self, error, args):
dont_stop = 0
dont_pass = 0
pending = 0
if not error:
assert len(args) == 4
error = self.toError(args[0])
dont_stop, dont_pass, pending = args[1:4]
done.doneGetSignalMask(self.token, error, dont_stop, dont_pass,
pending)
return GetSignalMaskCommand().token
def setSignalMask(self, context_id, dont_stop, dont_pass, done):
done = self._makeCallback(done)
service = self
class SetSignalMaskCommand(Command):
def __init__(self):
super(SetSignalMaskCommand, self).__init__(service.channel,
service,
"setSignalMask",
(context_id,
dont_stop,
dont_pass))
def done(self, error, args):
if not error:
assert len(args) == 1
error = self.toError(args[0])
done.doneCommand(self.token, error)
return SetSignalMaskCommand().token
def signal(self, context_id, signal, done):
done = self._makeCallback(done)
service = self
class SignalCommand(Command):
def __init__(self):
super(SignalCommand, self).__init__(service.channel,
service, "signal",
(context_id, signal))
def done(self, error, args):
if not error:
assert len(args) == 1
error = self.toError(args[0])
done.doneCommand(self.token, error)
return SignalCommand().token
def addListener(self, listener):
l = ChannelEventListener(self, listener)
self.channel.addEventListener(self, l)
self.listeners[listener] = l
def removeListener(self, listener):
l = self.listeners.get(listener)
if l:
del self.listeners[listener]
self.channel.removeEventListener(self, l)
class ChannelEventListener(channel.EventListener):
def __init__(self, service, listener):
self.service = service
self.listener = listener
def event(self, name, data):
try:
args = channel.fromJSONSequence(data)
if name == "exited":
assert len(args) == 2
self.listener.exited(args[0], args[1])
else:
raise IOError("Processes service: unknown event: " + name)
except Exception as x:
self.service.channel.terminate(x)
def _toEnvStringArray(envVars):
arr = []
if not envVars:
return arr
for name, value in envVars.items():
arr.append("%s=%s" % (name, value))
return arr
def _toEnvMap(arr):
envVars = {}
if not arr:
return envVars
for env in arr:
i = env.find('=')
if i >= 0:
envVars[env[:i]] = env[i + 1:]
else:
envVars[env] = ""
return envVars
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