/// <summary>
/// Process the request in a thread from the thread pool.
/// It not only process the current request, but also any pending request
/// for the same SyncKey(Key)
/// </summary>
/// <param name="request"></param>
public void ProcessRequest(object request)
{
AsyncRequst synRequest = null;
ArrayList pendingRequests = null;
AsyncRequst pendingRequest = null;
object result = null;
try
{
if (request != null && request is AsyncRequst)
{
synRequest = request as AsyncRequst;
result = _cluster.handleFunction(synRequest.Src, (Function)synRequest.Operation);
}
}
catch (Exception e)
{
result = e;
}
finally
{
if (synRequest != null)
{
if (synRequest.RequsetId >= 0)
{
_cluster.SendResponse(synRequest.Src, result, synRequest.RequsetId);
}
if (synRequest.SyncKey != null)
{
lock (_sync)
{
if (_pendingRequests.Contains(synRequest.SyncKey))
{
pendingRequests = (ArrayList)_pendingRequests[synRequest.SyncKey];
pendingRequest = (AsyncRequst)pendingRequests[0];
_lockTable.Add(synRequest.SyncKey, pendingRequest.RequsetId);
pendingRequests.RemoveAt(0);
if (pendingRequests.Count == 0)
{
_pendingRequests.Remove(synRequest.SyncKey);
}
}
else
{
_lockTable.Remove(synRequest.SyncKey);
}
}
if (pendingRequest != null)
{
ProcessRequest(pendingRequest);
}
}
}
}
}
public void HandleRequest(AsyncRequst operation)
{
bool pooled = false;
bool poolReq = false;
bool allowOperation = false;
ArrayList pendingOperations;
if (operation != null)
{
if (operation.SyncKey != null)
{
lock (_sync)
{
if (!_lockTable.Contains(operation.SyncKey))
{
_lockTable.Add(operation.SyncKey, operation.RequsetId);
allowOperation = true;
}
else
{
if (_pendingRequests.Contains(operation.SyncKey))
{
pendingOperations = (ArrayList)_pendingRequests[operation.SyncKey];
}
else
{
pendingOperations = new ArrayList();
_pendingRequests.Add(operation.SyncKey, pendingOperations);
}
pendingOperations.Add(operation);
_pendingRequests[operation.SyncKey] = pendingOperations;
}
}
}
else
{
allowOperation = true;
}
}
if (allowOperation)
{
ProcessRequest(operation);
}
}
public void HandleRequest(AsyncRequst operation)
{
bool pooled = false;
bool poolReq = false;
bool allowOperation = false;
ArrayList pendingOperations;
if (operation != null)
{
if (operation.SyncKey != null)
{
lock (_sync)
{
if (!_lockTable.Contains(operation.SyncKey))
{
_lockTable.Add(operation.SyncKey, operation.RequsetId);
allowOperation = true;
}
else
{
if (_pendingRequests.Contains(operation.SyncKey))
{
pendingOperations = (ArrayList)_pendingRequests[operation.SyncKey];
}
else
{
pendingOperations = new ArrayList();
_pendingRequests.Add(operation.SyncKey, pendingOperations);
}
pendingOperations.Add(operation);
_pendingRequests[operation.SyncKey] = pendingOperations;
}
}
}
else
{
allowOperation = true;
}
}
if (allowOperation)
ProcessRequest(operation);
}
object RequestHandler.handleNHopRequest(Message req, out Address destination, out Message replicationMsg)
{
destination = null;
replicationMsg = null;
if (req == null || req.Length == 0)
return null;
try
{
bool isLocalReq = LocalAddress.CompareTo(req.Src) == 0;
object body = req.getFlatObject();
try
{
if (body is Byte[])
body = CompactBinaryFormatter.FromByteBuffer((byte[])body, _context.SerializationContext);
}
catch (Exception e)
{
return e;
}
object result = null;
if (body is Function)
{
Function func = (Function)body;
func.UserPayload = req.Payload;
if (isLocalReq && func.ExcludeSelf)
{
if (req.HandledAysnc && req.RequestId > 0)
SendResponse(req.Src, null, req.RequestId);
return null;
}
if (req.HandledAysnc)
{
AsyncRequst asyncReq = new AsyncRequst(func, func.SyncKey);
asyncReq.Src = req.Src;
asyncReq.RequsetId = req.RequestId;
_asynHandler.HandleRequest(asyncReq);
return null;
}
else
{
result = handleFunction(req.Src, func, out destination, out replicationMsg);
}
}
else if (body is AggregateFunction)
{
AggregateFunction funcs = (AggregateFunction)body;
object[] results = new object[funcs.Functions.Length];
for (int i = 0; i < results.Length; i++)
{
Function func = (Function)funcs.Functions.GetValue(i);
if (isLocalReq && func.ExcludeSelf)
{
if (req.HandledAysnc && req.RequestId > 0)
{
SendResponse(req.Src, null, req.RequestId);
continue;
}
results[i] = null;
}
else
{
if (req.HandledAysnc)
{
AsyncRequst asyncReq = new AsyncRequst(func, func.SyncKey);
asyncReq.Src = req.Src;
asyncReq.RequsetId = req.RequestId;
_asynHandler.HandleRequest(asyncReq);
continue;
}
results[i] = handleFunction(req.Src, func);
}
}
result = results;
}
if (result is OperationResponse)
{
((OperationResponse)result).SerializablePayload = CompactBinaryFormatter.ToByteBuffer(((OperationResponse)result).SerializablePayload, _context.SerializationContext);
}
else
{
result = CompactBinaryFormatter.ToByteBuffer(result, _context.SerializationContext);
}
return result;
}
catch (Exception e)
{
return e;
}
return null;
}
