/// <inheritdoc />
public override async Task <GrpcResponse> StreamConnected(IStream <Command> stream, string token, Metadata header)
{
if (await this.tokenObserver.IsValid(token) == null)
{
return(Unauthorized());
}
CommonSubscriptionHandler.RegisterStream(stream, stream.Id);
CommonBaseHandler.Log(this.ToString(), string.Format("Client stream {0} is connected.", stream.Id), LogLevel.Info);
// Send service metadata informations to client after successful connect
foreach (var metaData in serviceMetaData.Values)
{
Command cmd = new Command {
Type = CommandType.Action, Topic = StaticCommandKeys.ServiceMetaData
};
cmd.Data.Add(Any.Pack(metaData));
stream.AddToQueue(cmd);
}
return(Ok());
}
/// <summary>
/// Sends the file.
/// </summary>
/// <param name="client">The client.</param>
/// <param name="command">The command<see cref="Command"/></param>
/// <param name="timeout">The timeout.</param>
/// <returns></returns>
public async Task SendFile(IClient <Command, FetchRequest, GrpcResponse> client, Command command, int timeout = 60)
{
try
{
File file = command.Data.FirstOrDefault().CastToModel <File>();
file.TotalChunks = Convert.ToInt32(Math.Floor((double)file.Size / ChunkSize) + 1);
byte[] fileContent = file.Content.ToByteArray();
ByteString empty = ByteString.CopyFrom(new byte[0]);
file.Content = empty;
IStream <Command> stream = client.GetStream();
stream.Connected = true;
// Generate and transfer file information
File fileInformation = new File()
{
Id = file.Id,
CreatedDT = file.CreatedDT,
ModifiedDT = file.ModifiedDT,
Name = file.Name,
Size = file.Size,
TotalChunks = file.TotalChunks,
Version = file.Version
};
Command fileCmd = new Command()
{
Type = CommandType.File,
Topic = StaticCommandKeys.FileTransfer
};
fileCmd.Data.Add(Any.Pack(fileInformation));
stream.AddToQueue(fileCmd);
// Generate and transfer file chunks
for (int i = 0; i < file.TotalChunks; i++)
{
Command cmd = new Command()
{
Type = CommandType.File,
Topic = StaticCommandKeys.FileTransfer
};
FileChunk chunk = new FileChunk()
{
Content = ByteString.CopyFrom(fileContent.Skip(i * ChunkSize).Take(ChunkSize).ToArray()),
FileId = file.Id,
Index = i
};
cmd.Data.Add(Any.Pack(chunk));
stream.AddToQueue(cmd);
chunk = null; // free up space in memory
cmd = null; // free up space in memory
}
;
await Task.Delay(0);
}
catch
{
throw;
}
}