qmp: add pull_event function
This function is unlike get_events in that it makes it easy to process one event at a time. This is useful in the mirroring test cases, where we want to process just one event (BLOCK_JOB_ERROR) and leave the others to a helper function. Acked-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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QMP/qmp.py
20
QMP/qmp.py
@ -136,6 +136,26 @@ class QEMUMonitorProtocol:
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raise Exception(ret['error']['desc'])
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raise Exception(ret['error']['desc'])
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return ret['return']
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return ret['return']
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def pull_event(self, wait=False):
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"""
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Get and delete the first available QMP event.
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@param wait: block until an event is available (bool)
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"""
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self.__sock.setblocking(0)
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try:
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self.__json_read()
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except socket.error, err:
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if err[0] == errno.EAGAIN:
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# No data available
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pass
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self.__sock.setblocking(1)
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if not self.__events and wait:
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self.__json_read(only_event=True)
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event = self.__events[0]
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del self.__events[0]
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return event
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def get_events(self, wait=False):
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def get_events(self, wait=False):
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"""
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"""
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Get a list of available QMP events.
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Get a list of available QMP events.
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