public override async Task SendConnectionAsync(string connectionId, string methodName, object[] args, CancellationToken cancellationToken = default)
{
if (connectionId == null)
{
throw new ArgumentNullException(nameof(connectionId));
}
// If the connection is local we can skip sending the message through the bus since we require sticky connections.
// This also saves serializing and deserializing the message!
var connection = Connections[connectionId];
if (connection != null)
{
// Connection is local, so we can skip publish
await connection.WriteAsync(new InvocationMessage(methodName, args), cancellationToken).AsTask();
return;
}
using IHubLifetimeScope <THub> scope = _scopeProvider.CreateScope <THub>();
LogContext.Info?.Log("Publishing Connection<THub> message to MassTransit.");
await scope.PublishEndpoint.Publish <Connection <THub> >(new
{
ConnectionId = connectionId,
Messages = Protocols.ToProtocolDictionary(methodName, args)
},
cancellationToken);
}
public override async Task SendAllAsync(string methodName, object[] args, CancellationToken cancellationToken = default)
{
using IHubLifetimeScope <THub> scope = _scopeProvider.CreateScope <THub>();
LogContext.Info?.Log("Publishing All<THub> message to MassTransit.");
await scope.PublishEndpoint.Publish <All <THub> >(
new { Messages = Protocols.ToProtocolDictionary(methodName, args) }, cancellationToken);
}
public override async Task SendAllExceptAsync(string methodName, object[] args, IReadOnlyList <string> excludedConnectionIds,
CancellationToken cancellationToken = default)
{
using IHubLifetimeScope <THub> scope = _scopeProvider.CreateScope <THub>();
LogContext.Info?.Log("Publishing All<THub> message to MassTransit, with exceptions.");
await scope.PublishEndpoint.Publish <All <THub> >(new
{
Messages = Protocols.ToProtocolDictionary(methodName, args),
ExcludedConnectionIds = excludedConnectionIds.ToArray()
}, cancellationToken);
}
public override async Task SendGroupAsync(string groupName, string methodName, object[] args, CancellationToken cancellationToken = default)
{
if (groupName == null)
{
throw new ArgumentNullException(nameof(groupName));
}
using IHubLifetimeScope <THub> scope = _scopeProvider.CreateScope <THub>();
LogContext.Info?.Log("Publishing Group<THub> message to MassTransit.");
await scope.PublishEndpoint.Publish <Group <THub> >(new
{
GroupName = groupName,
Messages = Protocols.ToProtocolDictionary(methodName, args)
},
cancellationToken);
}
public override async Task RemoveFromGroupAsync(string connectionId, string groupName, CancellationToken cancellationToken = default)
{
if (connectionId == null)
{
throw new ArgumentNullException(nameof(connectionId));
}
if (groupName == null)
{
throw new ArgumentNullException(nameof(groupName));
}
var connection = Connections[connectionId];
if (connection != null)
{
// short circuit if connection is on this server
RemoveGroupAsyncCore(connection, groupName);
return;
}
// Publish to mass transit group management instead, but it waits for an ack...
using IHubLifetimeScope <THub> scope = _scopeProvider.CreateScope <THub>();
try
{
LogContext.Info?.Log("Publishing remove GroupManagement<THub> message to MassTransit.");
RequestHandle <GroupManagement <THub> > request = scope.RequestClient.Create(new
{
ConnectionId = connectionId,
GroupName = groupName,
ServerName,
Action = GroupAction.Remove
},
cancellationToken);
Response <Ack <THub> > ack = await request.GetResponse <Ack <THub> >();
LogContext.Info?.Log($"Request Received for remove GroupManagement<THub> from {ack.Message.ServerName}.");
}
catch (RequestTimeoutException e)
{
// That's okay, just log and swallow
LogContext.Warning?.Log(e, "GroupManagement<THub> remove ack timed out.", e);
}
}
public override async Task SendUsersAsync(IReadOnlyList <string> userIds, string methodName, object[] args,
CancellationToken cancellationToken = default)
{
if (userIds == null)
{
throw new ArgumentNullException(nameof(userIds));
}
if (userIds.Any())
{
using IHubLifetimeScope <THub> scope = _scopeProvider.CreateScope <THub>();
IReadOnlyDictionary <string, byte[]> protocolDictionary = Protocols.ToProtocolDictionary(methodName, args);
IEnumerable <Task> publishTasks = userIds.Select(userId => scope.PublishEndpoint.Publish <User <THub> >(new
{
UserId = userId,
Messages = protocolDictionary
}, cancellationToken));
LogContext.Info?.Log("Publishing multiple User<THub> messages to MassTransit.");
await Task.WhenAll(publishTasks);
}
}