public void Refresh(ClientType clientType, string subject, string group)
{
var key = clientType + "$" + subject;
if (!CanRefresh(key))
{
return;
}
_lastRefreshTime[key] = DateTime.Now;
lock (lockHelper)
{
if (_client == null || _client.IsClose)
{
_client?.Close();
var hostAndPort = _addressResolver.Resolve();
_client = new TransportClient(hostAndPort.Host, hostAndPort.Port, new NewQmqEncoder(), new NewQmqDecoder(), new MetaInfoKeepliveStrategy(), false, 1024)
{
Processor = this
};
}
}
if (!_client.Writtable)
{
_client.StateChanged += (sender, e) =>
{
if (e.State == State.Connected)
{
SendRequest(clientType, subject, group, RequestType.Online);
}
};
_client.Connect();
}
else
{
SendRequest(clientType, subject, group);
}
Scheduler.INSTANCE.Schedule(() =>
{
_clusterMap.TryGetValue(key, out var clusterInfoFuture);
if (clusterInfoFuture == null || clusterInfoFuture.AlreadySet)
{
return;
}
var emptyClusterInfo = new NewQmqClusterInfo(false)
{
Subject = subject,
ClientType = clientType
};
clusterInfoFuture.Result = emptyClusterInfo;
}, DateTime.Now.AddSeconds(5));
}
void Processor.Process(HandlerContext context, object msg)
{
if (!(msg is Datagram datagram))
{
return;
}
if (datagram.Header.Code != 0)
{
return;
}
var packet = new Packet(datagram.Body, 0, datagram.Body.Length);
//skip ts
packet.ReadInt64();
var subject = packet.ReadUTF8();
//skip consumerGroup
packet.ReadUTF8();
//skip online offline state
packet.ReadByte();
int clientTypeCode = packet.ReadByte();
var clusterInfo = new NewQmqClusterInfo
{
Subject = subject,
ClientType = (ClientType)clientTypeCode
};
var brokerCount = packet.ReadInt16();
for (var i = 0; i < brokerCount; ++i)
{
var groupName = packet.ReadUTF8();
var master = packet.ReadUTF8();
var ts = packet.ReadInt64();
var state = packet.ReadByte();
var group = new BrokerGroup
{
Name = groupName,
Master = master,
UpdateTs = ts,
BrokerState = (BrokerState)state
};
clusterInfo.AddBrokerGroup(@group);
}
_clusterMap.TryGetValue(clusterInfo.ClientType.ToString() + '$' + clusterInfo.Subject, out var clusterInfoFuture);
if (clusterInfoFuture != null)
{
clusterInfoFuture.Result = clusterInfo;
}
}
