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""" |
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Enarksh |
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Copyright 2013-2016 Set Based IT Consultancy |
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Licence MIT |
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""" |
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import zmq |
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from enarksh.Config import Config |
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from enarksh.controller.message.NodeActionMessage import NodeActionMessage |
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class NodeActionClient: |
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""" |
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A client for requesting the controller for a node action. |
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""" |
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# ------------------------------------------------------------------------------------------------------------------ |
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def __init__(self, io): |
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""" |
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Object constructor. |
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:param enarksh.style.EnarkshStyle.EnarkshStyle io: The output decorator. |
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""" |
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self.__zmq_context = None |
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""" |
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The ZMQ context. |
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:type: Context |
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""" |
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self.__zmq_controller = None |
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""" |
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The socket for communicating with the controller. |
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:type: zmq.sugar.socket.Socket |
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""" |
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self._io = io |
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""" |
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The output decorator. |
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:type: enarksh.style.EnarkshStyle.EnarkshStyle |
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""" |
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# ------------------------------------------------------------------------------------------------------------------ |
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def main(self, uri, act_id): |
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""" |
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The main function of node_action. |
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:param str uri: The URI of the (trigger) node that must be triggered. |
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:param int act_id: The ID of the requested action. |
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""" |
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# Initialize ZMQ. |
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self.__zmq_init() |
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# Compose the message for the controller. |
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message = NodeActionMessage(uri, act_id) |
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# Send the message to the controller. |
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self.__zmq_controller.send_pyobj(message) |
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# Await the response from the controller. |
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response = self.__zmq_controller.recv_pyobj() |
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if response['ret'] == 0: |
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self._io.log_verbose(response['message']) |
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else: |
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self._io.error(response['message']) |
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return response['ret'] |
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# ------------------------------------------------------------------------------------------------------------------ |
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def __zmq_init(self): |
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""" |
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Initializes ZMQ. |
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""" |
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config = Config.get() |
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self.__zmq_context = zmq.Context() |
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# Create socket for communicating with the controller. |
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self.__zmq_controller = self.__zmq_context.socket(zmq.REQ) |
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self.__zmq_controller.connect(config.get_controller_lockstep_end_point()) |
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# ---------------------------------------------------------------------------------------------------------------------- |
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SetBased /
py-enarksh
