def sendDataMsgFromThreadAsync(msg):
if Web.wsDataConn is None:
raise StateError("ProjectInterface: FileServer not connected. Please run the fileServer.")
callId = msg.get('callId')
if not callId:
callbackStruct = StructDict()
callbackStruct.dataConn = Web.wsDataConn
callbackStruct.numResponses = 0
callbackStruct.responses = []
callbackStruct.semaphore = threading.Semaphore(value=0)
callbackStruct.timeStamp = time.time()
callbackStruct.msg = msg.copy()
if 'data' in callbackStruct.msg:
del callbackStruct.msg['data']
Web.callbackLock.acquire()
try:
Web.dataSequenceNum += 1
callId = Web.dataSequenceNum
callbackStruct.callId = callId
msg['callId'] = callId
Web.dataCallbacks[callId] = callbackStruct
finally:
Web.callbackLock.release()
Web.ioLoopInst.add_callback(Web.sendDataMessage, msg)
return callId
def prepare_request(self, msg):
"""Prepate a request to be sent, including creating a callback structure and unique ID."""
# Get data server connection the request will be sent on
websocketState.wsConnLock.acquire()
try:
wsConnections = websocketState.wsConnectionLists.get(self.name)
if wsConnections is None or len(wsConnections) == 0:
serviceName = 'DataService'
if self.name == 'wsSubject':
serviceName = 'SubjectService'
raise StateError(
f"RemoteService: {serviceName} not connected. Please start the remote service."
)
reqConn = wsConnections[-1] # always use most recent connection
finally:
websocketState.wsConnLock.release()
callId = msg.get('callId')
if not callId:
callbackStruct = StructDict()
callbackStruct.dataConn = reqConn
callbackStruct.numResponses = 0
callbackStruct.responses = []
callbackStruct.semaphore = threading.Semaphore(value=0)
callbackStruct.timeStamp = time.time()
callbackStruct.msg = msg.copy()
if 'data' in callbackStruct.msg:
del callbackStruct.msg['data']
self.callbackLock.acquire()
try:
self.dataSequenceNum += 1
callId = self.dataSequenceNum
callbackStruct.callId = callId
msg['callId'] = callId
self.dataCallbacks[callId] = callbackStruct
finally:
self.callbackLock.release()
# self.ioLoopInst.add_callback(Web.sendDataMessage, msg)
return callId, reqConn