private async Task ParseLine(string line)
{
StreamKernelCommand streamKernelCommand = null;
try
{
streamKernelCommand = StreamKernelCommand.Deserialize(line);
if (!_cancellationSource.IsCancellationRequested)
{
var command = streamKernelCommand.Command;
command.Properties["id"] = streamKernelCommand.Id;
await _kernel.SendAsync(command, _cancellationSource.Token);
}
}
catch (JsonReaderException)
{
Write(
new CommandParseFailure
{
Body = line
},
streamKernelCommand?.Id ?? -1);
}
}
public Task Start()
{
return(Task.Run(async() =>
{
while (true)
{
var line = await _input.ReadLineAsync();
if (line == null)
{
await Task.Delay(100);
continue;
}
StreamKernelCommand streamKernelCommand = null;
JObject obj = null;
try
{
obj = JObject.Parse(line);
streamKernelCommand = obj.ToObject <StreamKernelCommand>();
IKernelCommand command = null;
if (obj.TryGetValue("command", StringComparison.InvariantCultureIgnoreCase, out var commandValue))
{
command = DeserializeCommand(streamKernelCommand.CommandType, commandValue);
}
if (streamKernelCommand.CommandType == nameof(Quit))
{
return;
}
if (command == null)
{
Write(new CommandNotRecognized
{
Body = obj
},
streamKernelCommand.Id);
continue;
}
var result = await _kernel.SendAsync(command);
result.KernelEvents.Subscribe(e =>
{
Write(e, streamKernelCommand.Id);
});
}
catch (JsonReaderException)
{
Write(new CommandParseFailure
{
Body = line
},
streamKernelCommand?.Id ?? -1);
}
}
}));
}
public static int WriteMessage(this StreamWriter writer, IKernelCommand command, int?correlationId = null)
{
var message = new StreamKernelCommand
{
Id = correlationId ?? Interlocked.Increment(ref _id),
CommandType = command.GetType().Name,
Command = command
};
writer.WriteLine(JsonConvert.SerializeObject(message, _jsonSerializerSettings));
writer.Flush();
return(message.Id);
}
public static int WriteMessage(this StreamWriter writer, IKernelCommand command)
{
var message = new StreamKernelCommand()
{
Id = Interlocked.Increment(ref id),
CommandType = command.GetType().Name,
Command = JsonConvert.SerializeObject(command)
};
writer.WriteLine(JsonConvert.SerializeObject(message));
writer.Flush();
return(message.Id);
}
