public RedisHubLifetimeManager(ILogger <RedisHubLifetimeManager <THub> > logger,
IOptions <RedisOptions> options,
IHubProtocolResolver hubProtocolResolver)
{
_logger = logger;
_options = options.Value;
_ackHandler = new AckHandler();
_channels = new RedisChannels(typeof(THub).FullName);
_protocol = new RedisProtocol(hubProtocolResolver.AllProtocols);
RedisLog.ConnectingToEndpoints(_logger, options.Value.Configuration.EndPoints, _serverName);
_ = EnsureRedisServerConnection();
}
public RedisHubLifetimeManager(ILogger <RedisHubLifetimeManager <THub> > logger,
IOptions <RedisOptions> options)
{
_logger = logger;
_options = options.Value;
_ackHandler = new AckHandler();
var writer = new LoggerTextWriter(logger);
_logger.ConnectingToEndpoints(options.Value.Options.EndPoints);
_redisServerConnection = _options.Connect(writer);
_redisServerConnection.ConnectionRestored += (_, e) =>
{
// We use the subscription connection type
// Ignore messages from the interactive connection (avoids duplicates)
if (e.ConnectionType == ConnectionType.Interactive)
{
return;
}
_logger.ConnectionRestored();
};
_redisServerConnection.ConnectionFailed += (_, e) =>
{
// We use the subscription connection type
// Ignore messages from the interactive connection (avoids duplicates)
if (e.ConnectionType == ConnectionType.Interactive)
{
return;
}
_logger.ConnectionFailed(e.Exception);
};
if (_redisServerConnection.IsConnected)
{
_logger.Connected();
}
else
{
_logger.NotConnected();
}
_bus = _redisServerConnection.GetSubscriber();
SubscribeToHub();
SubscribeToAllExcept();
SubscribeToInternalGroup();
SubscribeToInternalServerName();
}
public RedisHubLifetimeManager(ILogger <RedisHubLifetimeManager <THub> > logger,
IOptions <RedisOptions> options)
{
_logger = logger;
_options = options.Value;
_ackHandler = new AckHandler();
var writer = new LoggerTextWriter(logger);
_logger.LogInformation("Connecting to redis endpoints: {endpoints}", string.Join(", ", options.Value.Options.EndPoints.Select(e => EndPointCollection.ToString(e))));
_redisServerConnection = _options.Connect(writer);
if (_redisServerConnection.IsConnected)
{
_logger.LogInformation("Connected to redis");
}
else
{
// TODO: We could support reconnecting, like old SignalR does.
throw new InvalidOperationException("Connection to redis failed.");
}
_bus = _redisServerConnection.GetSubscriber();
var previousBroadcastTask = Task.CompletedTask;
var channelName = _channelNamePrefix;
_logger.LogInformation("Subscribing to channel: {channel}", channelName);
_bus.Subscribe(channelName, async(c, data) =>
{
await previousBroadcastTask;
_logger.LogTrace("Received message from redis channel {channel}", channelName);
var message = DeserializeMessage <HubMessage>(data);
// TODO: This isn't going to work when we allow JsonSerializer customization or add Protobuf
var tasks = new List <Task>(_connections.Count);
foreach (var connection in _connections)
{
tasks.Add(WriteAsync(connection, message));
}
previousBroadcastTask = Task.WhenAll(tasks);
});
var allExceptTask = Task.CompletedTask;
channelName = _channelNamePrefix + ".AllExcept";
_logger.LogInformation("Subscribing to channel: {channel}", channelName);
_bus.Subscribe(channelName, async(c, data) =>
{
await allExceptTask;
_logger.LogTrace("Received message from redis channel {channel}", channelName);
var message = DeserializeMessage <RedisExcludeClientsMessage>(data);
var excludedIds = message.ExcludedIds;
// TODO: This isn't going to work when we allow JsonSerializer customization or add Protobuf
var tasks = new List <Task>(_connections.Count);
foreach (var connection in _connections)
{
if (!excludedIds.Contains(connection.ConnectionId))
{
tasks.Add(WriteAsync(connection, message));
}
}
allExceptTask = Task.WhenAll(tasks);
});
channelName = _channelNamePrefix + ".internal.group";
_bus.Subscribe(channelName, async(c, data) =>
{
var groupMessage = DeserializeMessage <GroupMessage>(data);
if (groupMessage.Action == GroupAction.Remove)
{
if (!await RemoveGroupAsyncCore(groupMessage.ConnectionId, groupMessage.Group))
{
// user not on this server
return;
}
}
if (groupMessage.Action == GroupAction.Add)
{
if (!await AddGroupAsyncCore(groupMessage.ConnectionId, groupMessage.Group))
{
// user not on this server
return;
}
}
// Sending ack to server that sent the original add/remove
await PublishAsync($"{_channelNamePrefix}.internal.{groupMessage.Server}", new GroupMessage
{
Action = GroupAction.Ack,
ConnectionId = groupMessage.ConnectionId,
Group = groupMessage.Group,
Id = groupMessage.Id
});
});
// Create server specific channel in order to send an ack to a single server
var serverChannel = $"{_channelNamePrefix}.internal.{_serverName}";
_bus.Subscribe(serverChannel, (c, data) =>
{
var groupMessage = DeserializeMessage <GroupMessage>(data);
if (groupMessage.Action == GroupAction.Ack)
{
_ackHandler.TriggerAck(groupMessage.Id);
}
});
}