def SendRequest(self, reqId, q, arh, discarded=None, efs=None):
"""
Send a request onto a remote server for processing, and return immediately without blocking
:param reqId: An unique request id within a service handler
:param q: An instance of CScopeUQueue or CUQueue or None
:param arh: A callback for tracking an instance of CAsyncResult containing an expected result
:param discarded: A callback for tracking communication channel events, close and cancel
:param efs: A callback for tracking an exception from server
:return: True if communication channel is sendable, and False if communication channel is not sendable
"""
if reqId <= tagBaseRequestID.idReservedTwo:
raise ValueError('Request id must be larger than 0x2001')
delay = q
if isinstance(q, CScopeUQueue):
q = q.UQueue
elif q is None:
delay = CScopeUQueue()
q = delay.UQueue
elif not isinstance(q, CUQueue):
raise ValueError('Bad input for parameter q')
#http://stackoverflow.com/questions/21483482/efficient-way-to-convert-string-to-ctypes-c-ubyte-array-in-python
bytes = (c_ubyte * q.GetSize()).from_buffer(q._m_bytes_, q._m_position_)
h = self._m_ClientSocket_.Handle
if h == 0:
return False
kv = None
batching = False
if arh or discarded or efs:
kv = (reqId, CResultCb(arh, discarded, efs))
batching = ccl.IsBatching(h)
with self._lock_Send_:
with self._lock_:
if batching:
self._m_kvBatching_.append(kv)
else:
self._m_kvCallback_.append(kv)
if ccl.SendRequest(h, reqId, bytes, q.GetSize()):
return True
else:
if ccl.SendRequest(h, reqId, bytes, q.GetSize()):
return True
if kv:
with self._lock_:
if batching:
self._m_kvBatching_.pop()
else:
self._m_kvCallback_.pop()
return False
def SendRouteeResult(self, q, reqId=0):
"""
Send a result to the other routee
:param q: An instance of CScopeUQueue or CUQueue or None
:param reqId: An unique request id within a service handler
:return: True if socket is connected, and False if socket is closed
"""
delay = q
if isinstance(q, CScopeUQueue):
q = q.UQueue
elif q is None:
delay = CScopeUQueue()
q = delay.UQueue
elif not isinstance(q, CUQueue):
raise ValueError('Bad input for parameter q')
if reqId == 0:
reqId = self._m_ClientSocket_.CurrentRequestID
h = self._m_ClientSocket_.Handle
bytes = (c_ubyte * q.GetSize()).from_buffer(q._m_bytes_, q._m_position_)
return ccl.SendRouteeResult(h, reqId, bytes, q.GetSize())
def arh(ar): # ar: an instance of CAsyncResult
if f.done(): return
sb = CScopeUQueue()
sb.UQueue.Swap(ar.UQueue)
f.set_result(sb)