/// <summary>
/// Handles the command.
/// </summary>
/// <param name="cmd">The cmd<see cref="Command"/></param>
/// <param name="streamId">The streamId<see cref="string"/></param>
/// <param name="cloudId">The cloud identifier.</param>
/// <returns>a task</returns>
private async Task <GrpcResponse> HandleCommand(NetworkUser user, Command cmd, string streamId, string cloudId)
{
GrpcResponse result = Ok();
switch (cmd.Topic)
{
case StaticCommandKeys.Connect:
user = cmd.Data.FirstOrDefault()?.CastToModel <NetworkUser>();
if (user == null)
{
throw new Exception("Invalid connection data.");
}
return(await this.tokenObserver.Authenticate(user.LoginName, user.PasswordHash));
case StaticCommandKeys.ServiceMetaData:
ServiceMetaData metaData = cmd.Data.FirstOrDefault()?.CastToModel <ServiceMetaData>();
if (metaData == null)
{
throw new Exception("Invalid data for service meta data information.");
}
if (serviceMetaData.ContainsKey(metaData.ServiceAddress))
{
ServiceMetaData s;
while (!serviceMetaData.TryRemove(metaData.ServiceAddress, out s))
{
await Task.Delay(1);
}
}
while (!serviceMetaData.TryAdd(metaData.ServiceAddress, metaData))
{
await Task.Delay(1);
}
Log("Added service metadata for service " + streamId, LogLevel.Debug);
break;
case StaticCommandKeys.Subscribe:
try
{
SubscriptionMessage msg = cmd.Data.FirstOrDefault()?.CastToModel <SubscriptionMessage>();
if (msg == null)
{
throw new Exception("Invalid data for the subscription message.");
}
Log("Client subscribed to Topic: " + msg.Topic, LogLevel.Debug);
CommonSubscriptionHandler.SubscribeToTopic(streamId, msg.Topic.ToString());
}
catch (Exception ex)
{
return(BadRequest(ex));
}
break;
case StaticCommandKeys.Unsubscribe:
try
{
SubscriptionMessage msg = cmd.Data.FirstOrDefault()?.CastToModel <SubscriptionMessage>();
if (msg == null)
{
throw new Exception("Invalid data for the subscription message.");
}
Log("Client unsubscribed from Topic: " + msg.Topic, LogLevel.Debug);
CommonSubscriptionHandler.UnsubscribeFromTopic(streamId, msg.Topic.ToString());
}
catch (Exception ex)
{
return(BadRequest(ex));
}
break;
default:
string topic = cmd.Topic;
if (!string.IsNullOrEmpty(cmd.TargetId))
{
topic = topic + "/" + cmd.TargetId;
}
CommonSubscriptionHandler.ForwardByTopic(cmd, topic);
break;
}
return(result);
}
/// <inheritdoc />
public void ChunkReceived(Command cmd, string streamId, string token, Metadata header)
{
CommonSubscriptionHandler.ForwardByTopic(cmd, cmd.Topic);
}