/// <summary>
/// Calls all waiters waiting on the given asset UUID
/// </summary>
/// <param name="message"></param>
private void CallGetWaiters(ServerResponseMsg message, Asset asset)
{
List <ResponseWaiter> getWaitList = _getResponseWaiters[message.AssetUUID];
foreach (ResponseWaiter waiter in getWaitList)
{
waiter.response = message;
waiter.asset = asset;
waiter.waitEvent.Set();
this.HandleAsyncResponse(waiter);
}
//remove the list, everyone has been notified
_getResponseWaiters.Remove(message.AssetUUID);
}
private Asset TryConstructAsset(ServerResponseMsg message, ResponseWaiter topWaiter)
{
if (topWaiter.type == ClientRequestMsg.RequestType.GET)
{
if (message.Status == ServerResponseMsg.Result.FOUND)
{
return new Asset(message.Data);
}
}
return null;
}
/// <summary>
/// Loop that receives traffic on the wire and dispatches results
/// </summary>
private void ReceiveLoop()
{
//wait for packets on the wire
while (! _stopping)
{
try
{
ServerResponseMsg message = new ServerResponseMsg(_conn);
//we should have a fully formed message
//pop the oldest request
ResponseWaiter topWaiter;
lock (_waitingRequests)
{
topWaiter = _waitingRequests.Dequeue();
}
//test if this is a successful GET and construct an asset
Asset asset = this.TryConstructAsset(message, topWaiter);
//notify the root waiter
topWaiter.response = message;
topWaiter.asset = asset;
topWaiter.waitEvent.Set();
//if this is a get request, also notify all the waiters and pull the entry
if (topWaiter.type == ClientRequestMsg.RequestType.GET)
{
lock (_getResponseWaiters)
{
if (_getResponseWaiters.ContainsKey(message.AssetUUID))
{
this.CallGetWaiters(message, asset);
}
}
}
}
catch (SocketException e)
{
this.HandleReceiveError(e);
}
catch (AssetServerError e)
{
this.HandleReceiveError(e);
}
catch (AssetProtocolError e)
{
_conn.Disconnect(false);
this.HandleReceiveError(e);
}
} //end while
}
private AssetServerError DetermineErrorFromStatus(ServerResponseMsg response)
{
if (response.Status == ServerResponseMsg.Result.ERROR)
{
return new AssetServerError(response.ErrorMessage);
}
if (response.Status == ServerResponseMsg.Result.NOT_FOUND)
{
return new AssetServerError("Asset " + response.AssetUUID + " was not found");
}
return null;
}
/// <summary>
/// Calls all waiters waiting on the given asset UUID
/// </summary>
/// <param name="message"></param>
private void CallGetWaiters(ServerResponseMsg message, Asset asset)
{
List<ResponseWaiter> getWaitList = _getResponseWaiters[message.AssetUUID];
foreach (ResponseWaiter waiter in getWaitList)
{
waiter.response = message;
waiter.asset = asset;
waiter.waitEvent.Set();
this.HandleAsyncResponse(waiter);
}
//remove the list, everyone has been notified
_getResponseWaiters.Remove(message.AssetUUID);
}
