def proc_cmd(self, cmd):
"""
Process received Command.
@cmd is a command. Should be an instance of Command class.
"""
print "%s.proc_cmd(%r)" % (self, cmd)
handler = getattr(self, "proc_cmd_"+cmd.command(), None)
if not handler:
echo_evt = self.proc_def_handler(cmd, event.echo(cmd,
ECHO.NOT_IMPLEMENTED, origin=self.origin()))
else:
try:
echo_evt = handler(cmd, event.echo(cmd, ECHO.OK,
origin=self.origin()))
except:
echo_evt = self.proc_exception(cmd, event.echo(cmd, ECHO.EXCEPTION,
origin=self.origin(), exception=format_exc()))
if echo_evt:
self.send_cmd(echo_evt)
def proc_cmd_forward(self, cmd, echo_evt):
evt = event.event(cmd.arg('event'))
evev = evt.event()
if evev not in ['variable_get', 'variable_set']:
return echo_evt
new_cmd = self.proc_evt(evt)
if new_cmd:
self.send_cmd(event.forward_response(new_cmd, cmd.id()))
else:
echo_evt = event.echo(cmd, ECHO.EXCEPTION, origin=self.origin(),
exception='No forward_response.')
return echo_evt
def proc_cmd(self, backend, cmd):
"""Process Command received from backend.
@backend is the backend, which issued the command.
@cmd is a command. Should be an instance of Command class.
This is the only method mandatory for Backend side
Controller-Adaptor."""
log.debug("Controller: proc_cmd(..., %r)", cmd)
handler = getattr(self, "proc_cmd_"+cmd.command(), None)
if not handler:
evt = event.echo(cmd, ECHO.NOT_IMPLEMENTED, origin=self.__origin)
else:
evt = event.echo(cmd, ECHO.OK, origin=self.__origin)
try:
handler(backend, cmd, evt)
except:
self.handle_exception("Handling %s raised an exception." %
cmd.command())
dict_update(evt.args(),
rc=ECHO.EXCEPTION,
exception=format_exc())
log.debug("Controller: echo(%r)", evt)
backend.proc_evt(evt, explicit=True)