def processCmd(self, reserved, cmdId, payload):
'''
\brief deserialize and process command
'''
ApiConnector.logDump(payload,
"RawIO INP. Command ID: {0}".format(cmdId))
if cmdId in self.notifIds:
try:
payloadList = struct.unpack('!' + str(len(payload)) + 'B',
payload)
(notifNames,
params) = self.apiDef.deserialize(self.apiDef.NOTIFICATION,
cmdId, payloadList)
ApiConnector.log.debug("IO INP. {0} : {1}".format(
notifNames, params))
self.putNotification((notifNames, params))
except ApiException.ConnectionError as ex:
raise socket.error(0, ex.value) # Initiate disconnection
except Exception as ex:
ApiConnector.log.error(
"Deserialization command {0}. Error {1}".format(cmdId, ex))
else:
self.ackCmdId = cmdId
self.acknowledgeBuf = payload
self.ackSignal()
def processCmd(self, reserved, cmdId, payload):
'''
\brief deserialize and process command
'''
ApiConnector.logDump(payload, "RawIO INP. Command ID: {0}".format(cmdId))
if cmdId in self.notifIds :
try :
payloadList = struct.unpack('!'+str(len(payload))+'B', payload)
(notifNames, params) = self.apiDef.deserialize(self.apiDef.NOTIFICATION, cmdId, payloadList)
ApiConnector.log.debug("IO INP. {0} : {1}".format(notifNames, params))
self.putNotification((notifNames, params))
except ApiException.ConnectionError as ex:
raise socket.error(0, ex.value) # Initiate disconnection
except Exception as ex :
ApiConnector.log.error("Deserialization command {0}. Error {1}".format(cmdId, ex))
else :
self.ackCmdId = cmdId
self.acknowledgeBuf = payload
self.ackSignal()
def send(self, cmdNames, params):
self.sendLock.acquire()
try:
if not self.isConnected:
raise ApiException.ConnectionError("Disconnected")
# Send data
ApiConnector.log.debug("IO OUT. {0} : {1}".format(
cmdNames, params))
(cmdId, paramsBinList) = self.apiDef.serialize(cmdNames, params)
paramsBin = struct.pack('!' + str(len(paramsBinList)) + 'B',
*paramsBinList)
ApiConnector.logDump(paramsBin,
"RawIO OUT. Command ID: {0}".format(cmdId))
packet = self.muxMsg.build_message(cmdId, paramsBin)
self.acknowledgeBuf = None
self.ackCmdId = -1
try:
self.socket.sendall(packet)
except socket.error, way:
# Socket error. Disconnect from device. Stop command processing
reason = "IO output error [{0}] {1}".format(
way.args[0], way.args[1])
self.disconnect(reason)
raise ApiException.ConnectionError(reason)
# Waiting acknowledge
self.sendSemaphor.acquire()
if not self.isConnected: # Disconnect happened during waiting ack.
raise ApiException.ConnectionError(self.disconnectReason)
# Process acknowledge
cmdId = self.apiDef.nameToId(self.apiDef.COMMAND, (cmdNames[0], ))
if self.ackCmdId != cmdId:
reason = "Unexpected acknowledge {0} for command {1} ({2})".format(
self.ackCmdId, cmdId, cmdNames)
self.disconnect(reason)
raise ApiException.ConnectionError(reason)
# Parse acknowledge
ackList = struct.unpack('!' + str(len(self.acknowledgeBuf)) + 'B',
self.acknowledgeBuf)
(resCmdName,
resParams) = self.apiDef.deserialize(self.apiDef.COMMAND,
self.ackCmdId, ackList)
ApiConnector.log.debug("IO INP. {0} : {1}".format(
resCmdName, resParams))
if self.apiDef.RC in resParams and resParams[
self.apiDef.RC] != self._RC_OK:
if resParams[self.apiDef.RC] == self._RC_TIMEOUT:
raise ApiException.CommandTimeoutError(resCmdName)
try:
desc = '({0})\n{1}'.format(
self.apiDef.responseFieldValueToDesc(
resCmdName,
self.apiDef.RC,
resParams[self.apiDef.RC],
),
self.apiDef.rcToDescription(
resParams[self.apiDef.RC],
resCmdName,
),
)
except:
desc = None
raise ApiException.APIError(cmd=resCmdName,
rc=resParams[self.apiDef.RC],
desc=desc)
self.ackCmdId = -1
self.acknowledgeBuf = None
def send(self, cmdNames, params) :
self.sendLock.acquire()
try :
if not self.isConnected :
raise ApiException.ConnectionError("Disconnected")
# Send data
ApiConnector.log.debug("IO OUT. {0} : {1}".format(cmdNames, params))
(cmdId, paramsBinList) = self.apiDef.serialize(cmdNames, params)
paramsBin = struct.pack('!'+str(len(paramsBinList))+'B', *paramsBinList)
ApiConnector.logDump(paramsBin, "RawIO OUT. Command ID: {0}".format(cmdId))
packet = self.muxMsg.build_message(cmdId, paramsBin)
self.acknowledgeBuf = None
self.ackCmdId = -1
try :
self.socket.sendall(packet)
except socket.error, way:
# Socket error. Disconnect from device. Stop command processing
reason = "IO output error [{0}] {1}".format(way.args[0], way.args[1])
self.disconnect(reason)
raise ApiException.ConnectionError(reason)
# Waiting acknowledge
self.sendSemaphor.acquire()
if not self.isConnected : # Disconnect happened during waiting ack.
raise ApiException.ConnectionError(self.disconnectReason)
# Process acknowledge
cmdId = self.apiDef.nameToId(self.apiDef.COMMAND, (cmdNames[0],))
if self.ackCmdId != cmdId :
reason = "Unexpected acknowledge {0} for command {1} ({2})".format(self.ackCmdId, cmdId, cmdNames)
self.disconnect(reason)
raise ApiException.ConnectionError(reason)
# Parse acknowledge
ackList = struct.unpack('!'+str(len(self.acknowledgeBuf))+'B', self.acknowledgeBuf)
(resCmdName, resParams) = self.apiDef.deserialize(self.apiDef.COMMAND, self.ackCmdId, ackList)
ApiConnector.log.debug("IO INP. {0} : {1}".format(resCmdName, resParams))
if self.apiDef.RC in resParams and resParams[self.apiDef.RC] != self._RC_OK :
if resParams[self.apiDef.RC] == self._RC_TIMEOUT :
raise ApiException.CommandTimeoutError(resCmdName)
try:
desc = '({0})\n{1}'.format(
self.apiDef.responseFieldValueToDesc(
resCmdName,
self.apiDef.RC,
resParams[self.apiDef.RC],
),
self.apiDef.rcToDescription(
resParams[self.apiDef.RC],
resCmdName,
),
)
except:
desc = None
raise ApiException.APIError(
cmd=resCmdName,
rc=resParams[self.apiDef.RC],
desc=desc
)
self.ackCmdId = -1
self.acknowledgeBuf = None
