Esempio n. 1
0
    def __clientRPC(self, function, params, conn_time=1.0, resp_time=5.0):
        """
        internal library for pvAccess channel RPC.
        
        conn_time: waiting time for connection, 1.0 by default;
        resp_time: waiting time for response, 5.0 by default
        """
        alarm = Alarm()
        timeStamp = TimeStamp()

        ntnv = NTNameValue(function, params)

        # now do issue + wait
        channelRPC = ChannelRPC(self.channelname)
        channelRPC.issueConnect()
        if not channelRPC.waitConnect(conn_time):
            #print channelRPC.getMessage()
            raise Exception(channelRPC.getMessage())
        channelRPC.issueRequest(ntnv.getNTNameValue(), False)
        result = channelRPC.waitResponse(resp_time)
        if result is None:
            #print channelRPC.getMessage()
            raise Exception(channelRPC.getMessage())
        if function in ["retrieveSnapshot", "getLiveMachine", "saveSnapshot"]:
            result = NTMultiChannel(result)
        elif function in [
                "retrieveServiceEvents", "retrieveServiceConfigs",
                "retrieveServiceConfigProps"
        ]:
            result = NTTable(result)
        elif function == "updateSnapshotEvent":
            result = NTScalar(result)
        result.getAlarm(alarm)
        result.getTimeStamp(timeStamp)
        return result
Esempio n. 2
0
    def __clientRPC(self, function, params, conn_time=1.0, resp_time=5.0):
        """
        internal library for pvAccess channel RPC.
        
        conn_time: waiting time for connection, 1.0 by default;
        resp_time: waiting time for response, 5.0 by default
        """
        alarm = Alarm()
        timeStamp = TimeStamp()

        ntnv = NTNameValue(function, params)
        
        # now do issue + wait
        channelRPC = ChannelRPC(self.channelname)
        channelRPC.issueConnect()
        if not channelRPC.waitConnect(conn_time):
            #print channelRPC.getMessage()
            raise Exception(channelRPC.getMessage())
        channelRPC.issueRequest(ntnv.getNTNameValue(), False)
        result = channelRPC.waitResponse(resp_time)
        if result is None:
            #print channelRPC.getMessage()
            raise Exception(channelRPC.getMessage())
        if function in ["retrieveSnapshot", "getLiveMachine", "saveSnapshot"]:
            result = NTMultiChannel(result)
        elif function in ["retrieveServiceEvents", "retrieveServiceConfigs", "retrieveServiceConfigProps"]:
            result = NTTable(result)
        elif function == "updateSnapshotEvent":
            result = NTScalar(result)
        result.getAlarm(alarm)
        result.getTimeStamp(timeStamp)
        return result
Esempio n. 3
0
 def __clientRPC(self, function, params):
     """
     internal library for pvAccess channel RPC.
     """
     alarm = Alarm()
     timeStamp = TimeStamp()
 
     ntnv = NTNameValue(function,params)
     
     # now do issue + wait
     channelRPC = ChannelRPC(self.channelname,"record[process=true]field()")
     channelRPC.issueConnect()
     if not channelRPC.waitConnect(1.0) :
         print channelRPC.getMessage()
         raise Exception(channelRPC.getMessage())
     channelRPC.issueRequest(ntnv.getNTNameValue(),False)
     result = channelRPC.waitRequest()
     if(result==None) :
         print channelRPC.getMessage()
         raise Exception(channelRPC.getMessage())
     nttable = NTTable(result)
     nttable.getAlarm(alarm.getAlarmPy())    
     nttable.getTimeStamp(timeStamp.getTimeStampPy())
     return nttable