private void FlowControlIfNecessary()
{
if (_flowControlThreshold > 0 && _connection.PendingMessageCount >= _flowControlThreshold)
{
var milliseconds = FlowControlUtil.CalculateFlowControlTimeMilliseconds(
(int)_connection.PendingMessageCount,
_flowControlThreshold,
_setting.SendMessageFlowControlStepPercent,
_setting.SendMessageFlowControlWaitMilliseconds);
Thread.Sleep(milliseconds);
}
}
public void EnterConsumingQueue(ConsumeResult <Ignore, string> message)
{
TopicPartitionProcessQueue <Ignore, string> processQueue;
if (_consumingQueues.TryGetValue(message.ToKeyString(), out processQueue))
{
processQueue.AddMessage(message);
}
else
{
processQueue = new TopicPartitionProcessQueue <Ignore, string>(message.Topic, message.Partition);
processQueue.AddMessage(message);
_consumingQueues.TryAdd(message.ToKeyString(), processQueue);
}
if (_isSequentialConsume)
{
_consumeWaitingQueue.Add(message);
}
else
{
Task.Factory.StartNew(async m =>
{
await HandleMessageAsync(m);
}, message);
}
var unconsumedMessageCount = processQueue.GetMessageCount();
if (unconsumedMessageCount > _consumer.Setting.ConsumeFlowControlThreshold)
{
var delayMilliseconds = FlowControlUtil.CalculateFlowControlTimeMilliseconds
(
unconsumedMessageCount,
_consumer.Setting.ConsumeFlowControlThreshold,
_consumer.Setting.ConsumeFlowControlStepPercent,
_consumer.Setting.ConsumeFlowControlStepWaitMilliseconds
);
_logger.InfoFormat($"{message.ToKeyString()} unconsumed message[{unconsumedMessageCount}], consume too slow, need to wait {delayMilliseconds}ms.");
Thread.Sleep(delayMilliseconds);
}
}
private void PullMessage(PullRequest pullRequest)
{
try
{
if (_stoped)
{
return;
}
if (pullRequest.ProcessQueue.IsDropped)
{
return;
}
var messageCount = pullRequest.ProcessQueue.GetMessageCount();
var flowControlThreshold = Setting.PullMessageFlowControlThreshold;
if (flowControlThreshold > 0 && messageCount >= flowControlThreshold)
{
var milliseconds = FlowControlUtil.CalculateFlowControlTimeMilliseconds(
messageCount,
flowControlThreshold,
Setting.PullMessageFlowControlStepPercent,
Setting.PullMessageFlowControlStepWaitMilliseconds);
Task.Factory.StartDelayedTask(milliseconds, () => SchedulePullRequest(pullRequest));
return;
}
var request = new PullMessageRequest
{
ConsumerId = GetConsumerId(),
ConsumerGroup = GroupName,
MessageQueue = pullRequest.MessageQueue,
Tags = string.Join("|", pullRequest.Tags),
QueueOffset = pullRequest.NextConsumeOffset,
PullMessageBatchSize = Setting.PullMessageBatchSize,
SuspendPullRequestMilliseconds = Setting.SuspendPullRequestMilliseconds,
ConsumeFromWhere = Setting.ConsumeFromWhere
};
var data = SerializePullMessageRequest(request);
var remotingRequest = new RemotingRequest((int)RequestCode.PullMessage, data);
pullRequest.PullStartTime = DateTime.Now;
_remotingClient.InvokeAsync(remotingRequest, Setting.PullRequestTimeoutMilliseconds).ContinueWith(pullTask =>
{
try
{
if (_stoped)
{
return;
}
if (pullRequest.ProcessQueue.IsDropped)
{
return;
}
if (pullTask.Exception != null)
{
_logger.Error(string.Format("Pull message failed, pullRequest:{0}", pullRequest), pullTask.Exception);
SchedulePullRequest(pullRequest);
return;
}
ProcessPullResponse(pullRequest, pullTask.Result);
}
catch (Exception ex)
{
if (_stoped)
{
return;
}
if (pullRequest.ProcessQueue.IsDropped)
{
return;
}
if (_remotingClient.IsConnected)
{
string remotingResponseBodyLength;
if (pullTask.Result != null)
{
remotingResponseBodyLength = pullTask.Result.Body.Length.ToString();
}
else
{
remotingResponseBodyLength = "pull message result is null.";
}
_logger.Error(string.Format("Process pull result has exception, pullRequest:{0}, remotingResponseBodyLength:{1}", pullRequest, remotingResponseBodyLength), ex);
}
SchedulePullRequest(pullRequest);
}
});
}
catch (Exception ex)
{
if (_stoped)
{
return;
}
if (pullRequest.ProcessQueue.IsDropped)
{
return;
}
if (_remotingClient.IsConnected)
{
_logger.Error(string.Format("PullMessage has exception, pullRequest:{0}", pullRequest), ex);
}
SchedulePullRequest(pullRequest);
}
}
private void PullMessage(PullRequest pullRequest)
{
var brokerConnection = _clientService.GetBrokerConnection(pullRequest.MessageQueue.BrokerName);
if (brokerConnection == null)
{
Task.Factory.StartDelayedTask(5 * 1000, () => SchedulePullRequest(pullRequest));
_logger.ErrorFormat("Pull message failed as the target broker connection not found, pullRequest:{0}", pullRequest);
return;
}
var remotingClient = brokerConnection.RemotingClient;
try
{
if (_consumer.Stopped)
{
return;
}
if (pullRequest.IsDropped)
{
return;
}
var messageCount = 0;
var flowControlThreshold = 0;
if (_consumer.Setting.AutoPull)
{
messageCount = pullRequest.ProcessQueue.GetMessageCount();
flowControlThreshold = _consumer.Setting.PullMessageFlowControlThreshold;
}
else
{
messageCount = _pulledMessageQueue.Count;
flowControlThreshold = _consumer.Setting.ManualPullLocalMessageQueueMaxSize;
}
if (messageCount > flowControlThreshold)
{
var milliseconds = FlowControlUtil.CalculateFlowControlTimeMilliseconds(
messageCount,
flowControlThreshold,
_consumer.Setting.PullMessageFlowControlStepPercent,
_consumer.Setting.PullMessageFlowControlStepWaitMilliseconds);
Task.Factory.StartDelayedTask(milliseconds, () => SchedulePullRequest(pullRequest));
return;
}
var request = new PullMessageRequest
{
ConsumerId = _clientId,
ConsumerGroup = _consumer.GroupName,
MessageQueue = pullRequest.MessageQueue,
Tags = string.Join("|", pullRequest.Tags),
QueueOffset = pullRequest.NextConsumeOffset,
PullMessageBatchSize = _consumer.Setting.PullMessageBatchSize,
SuspendPullRequestMilliseconds = _consumer.Setting.SuspendPullRequestMilliseconds,
ConsumeFromWhere = _consumer.Setting.ConsumeFromWhere
};
var data = SerializePullMessageRequest(request);
var remotingRequest = new RemotingRequest((int)BrokerRequestCode.PullMessage, data);
pullRequest.PullStartTime = DateTime.Now;
remotingClient.InvokeAsync(remotingRequest, _consumer.Setting.PullRequestTimeoutMilliseconds).ContinueWith(pullTask =>
{
try
{
if (_consumer.Stopped)
{
return;
}
if (pullRequest.IsDropped)
{
return;
}
if (pullTask.Exception != null)
{
_logger.Error(string.Format("Pull message failed, pullRequest:{0}", pullRequest), pullTask.Exception);
SchedulePullRequest(pullRequest);
return;
}
ProcessPullResponse(pullRequest, pullTask.Result, pulledMessages =>
{
var filterMessages = pulledMessages.Where(x => IsQueueMessageMatchTag(x, pullRequest.Tags));
var consumingMessages = filterMessages.Select(x => new ConsumingMessage(x, pullRequest)).ToList();
if (_consumer.Setting.AutoPull)
{
pullRequest.ProcessQueue.AddMessages(consumingMessages);
foreach (var consumingMessage in consumingMessages)
{
if (_consumer.Setting.MessageHandleMode == MessageHandleMode.Sequential)
{
_consumingMessageQueue.Add(consumingMessage);
}
else
{
Task.Factory.StartNew(HandleMessage, consumingMessage);
}
}
}
else
{
foreach (var consumingMessage in consumingMessages)
{
_pulledMessageQueue.Add(consumingMessage.Message);
}
}
});
}
catch (Exception ex)
{
if (_consumer.Stopped)
{
return;
}
if (pullRequest.IsDropped)
{
return;
}
if (remotingClient.IsConnected)
{
string remotingResponseBodyLength;
if (pullTask.Result != null)
{
remotingResponseBodyLength = pullTask.Result.Body.Length.ToString();
}
else
{
remotingResponseBodyLength = "pull message result is null.";
}
_logger.Error(string.Format("Process pull result has exception, pullRequest:{0}, remotingResponseBodyLength:{1}", pullRequest, remotingResponseBodyLength), ex);
}
SchedulePullRequest(pullRequest);
}
});
}
catch (Exception ex)
{
if (_consumer.Stopped)
{
return;
}
if (pullRequest.IsDropped)
{
return;
}
if (remotingClient.IsConnected)
{
_logger.Error(string.Format("PullMessage has exception, pullRequest:{0}", pullRequest), ex);
}
SchedulePullRequest(pullRequest);
}
}