private NewQmqClient SelectWritableClient(string subject, bool forceRefreshBrokerGroup, bool isDelayMessage)
{
var cluster = isDelayMessage ? _brokerGroupService.DelayProducerGetSubjectCluster(subject, forceRefreshBrokerGroup) : _brokerGroupService.ProducerGetSubjectCluster(subject, forceRefreshBrokerGroup);
if (cluster.BrokerGroups.Count == 0)
{
return(null);
}
var brokerGroups = cluster.BrokerGroups.Values.Where(BrokerGroup.IsWritable).ToList();
if (brokerGroups.Count == 0)
{
return(null);
}
// First of all, random select a client.
// If random selected client is not writable, then select first writable client.
var randBrokerGroup = brokerGroups.ElementAt(StaticRandom.NextRand(brokerGroups.Count));
var randClient = _clientManager.GetOrCreate(randBrokerGroup);
if (randClient.Writtable)
{
return(randClient);
}
return(brokerGroups.Select(brokerGroup => _clientManager.GetOrCreate(brokerGroup))
.FirstOrDefault(client => client.Writtable));
}
private NewQmqClient CreateOrGetClient(BrokerGroup group)
{
var randClient = _clientManager.GetOrCreate(group);
if (randClient.Writtable)
{
return(randClient);
}
return(null);
}
private NewQmqClient GetBrokerGroupClient(string brokerGroupName, string subject, string group)
{
var brokerGroups = _brokerGroupService.ConsumerGetSubjectCluster(subject, group).BrokerGroups;
if (brokerGroups.Count == 0 || !brokerGroups.ContainsKey(brokerGroupName))
{
return(null);
}
var brokerGroup = brokerGroups[brokerGroupName];
if (brokerGroup == null || !BrokerGroup.IsReadable(brokerGroup))
{
return(null);
}
return(_clientManager.GetOrCreate(brokerGroup));
}