internal void Resubscribe(RedisChannel channel, ServerEndPoint server)
{
if (server != null && Interlocked.CompareExchange(ref owner, server, server) == server)
{
var cmd = channel.Contains((byte)'*') ? RedisCommand.PSUBSCRIBE : RedisCommand.SUBSCRIBE;
var msg = Message.Create(-1, CommandFlags.FireAndForget, cmd, channel);
msg.SetInternalCall();
server.QueueDirectFireAndForget(msg, ResultProcessor.TrackSubscriptions);
}
}
public Task SubscribeToServer(ConnectionMultiplexer multiplexer, RedisChannel channel, CommandFlags flags, object asyncState, bool internalCall)
{
var cmd = channel.Contains((byte)'*') ? RedisCommand.PSUBSCRIBE : RedisCommand.SUBSCRIBE;
var selected = multiplexer.SelectServer(-1, cmd, CommandFlags.DemandMaster, default(RedisKey));
if (selected == null || Interlocked.CompareExchange(ref owner, selected, null) != null)
{
return(null);
}
var msg = Message.Create(-1, flags, cmd, channel);
return(selected.QueueDirectAsync(msg, ResultProcessor.TrackSubscriptions, asyncState));
}
public Task UnsubscribeFromServer(RedisChannel channel, CommandFlags flags, object asyncState, bool internalCall)
{
var oldOwner = Interlocked.Exchange(ref owner, null);
if (oldOwner == null)
{
return(null);
}
var cmd = channel.Contains((byte)'*') ? RedisCommand.PUNSUBSCRIBE : RedisCommand.UNSUBSCRIBE;
var msg = Message.Create(-1, flags, cmd, channel);
if (internalCall)
{
msg.SetInternalCall();
}
return(oldOwner.QueueDirectAsync(msg, ResultProcessor.TrackSubscriptions, asyncState));
}