UnityInputProto Exchange(UnityOutputProto unityOutput)
{
#if UNITY_EDITOR || UNITY_STANDALONE_WIN || UNITY_STANDALONE_OSX || UNITY_STANDALONE_LINUX
if (!m_IsOpen)
{
return(null);
}
try
{
var message = m_Client.Exchange(WrapMessage(unityOutput, 200));
if (message.Header.Status == 200)
{
return(message.UnityInput);
}
m_IsOpen = false;
// Not sure if the quit command is actually sent when a
// non 200 message is received. Notify that we are indeed
// quitting.
QuitCommandReceived?.Invoke();
return(message.UnityInput);
}
catch
{
m_IsOpen = false;
QuitCommandReceived?.Invoke();
return(null);
}
#else
throw new UnityAgentsException(
"You cannot perform training on this platform.");
#endif
}
void SendCommandEvent(CommandProto command)
{
switch (command)
{
case CommandProto.Quit:
{
QuitCommandReceived?.Invoke();
return;
}
case CommandProto.Reset:
{
foreach (var brainName in m_OrderedAgentsRequestingDecisions.Keys)
{
m_OrderedAgentsRequestingDecisions[brainName].Clear();
}
ResetCommandReceived?.Invoke();
return;
}
default:
{
return;
}
}
}
UnityInputProto Initialize(UnityOutputProto unityOutput,
out UnityInputProto unityInput)
{
#if UNITY_EDITOR || UNITY_STANDALONE_WIN || UNITY_STANDALONE_OSX || UNITY_STANDALONE_LINUX
m_IsOpen = true;
var channel = new Channel(
"localhost:" + m_CommunicatorInitParameters.port,
ChannelCredentials.Insecure);
m_Client = new UnityToExternalProto.UnityToExternalProtoClient(channel);
var result = m_Client.Exchange(WrapMessage(unityOutput, 200));
var inputMessage = m_Client.Exchange(WrapMessage(null, 200));
unityInput = inputMessage.UnityInput;
#if UNITY_EDITOR
EditorApplication.playModeStateChanged += HandleOnPlayModeChanged;
#endif
if (result.Header.Status != 200 || inputMessage.Header.Status != 200)
{
m_IsOpen = false;
QuitCommandReceived?.Invoke();
}
return(result.UnityInput);
#else
throw new UnityAgentsException(
"You cannot perform training on this platform.");
#endif
}
/// <summary>
/// Send a UnityOutput and receives a UnityInput.
/// </summary>
/// <returns>The next UnityInput.</returns>
/// <param name="unityOutput">The UnityOutput to be sent.</param>
UnityInputProto Exchange(UnityOutputProto unityOutput)
{
if (!m_IsOpen)
{
return(null);
}
try
{
var message = m_Client.Exchange(WrapMessage(unityOutput, 200));
if (message.Header.Status == 200)
{
return(message.UnityInput);
}
m_IsOpen = false;
// Not sure if the quit command is actually sent when a
// non 200 message is received. Notify that we are indeed
// quitting.
QuitCommandReceived?.Invoke();
return(message.UnityInput);
}
catch (Exception ex)
{
if (ex is RpcException rpcException)
{
// Log more verbose errors if they're something the user can possibly do something about.
switch (rpcException.Status.StatusCode)
{
case StatusCode.Unavailable:
// This can happen when python disconnects. Ignore it to avoid noisy logs.
break;
case StatusCode.ResourceExhausted:
// This happens is the message body is too large. There's no way to
// gracefully handle this, but at least we can show the message and the
// user can try to reduce the number of agents or observation sizes.
Debug.LogError($"GRPC Exception: {rpcException.Message}. Disconnecting from trainer.");
break;
default:
// Other unknown errors. Log at INFO level.
Debug.Log($"GRPC Exception: {rpcException.Message}. Disconnecting from trainer.");
break;
}
}
else
{
// Fall-through for other error types
Debug.LogError($"Communication Exception: {ex.Message}. Disconnecting from trainer.");
}
m_IsOpen = false;
QuitCommandReceived?.Invoke();
return(null);
}
}
void NotifyQuitAndShutDownChannel()
{
QuitCommandReceived?.Invoke();
try
{
m_Channel.ShutdownAsync().Wait();
}
catch (Exception)
{
// do nothing
}
}
UnityInputProto Initialize(int port, UnityOutputProto unityOutput, out UnityInputProto unityInput)
{
m_IsOpen = true;
var channel = new Channel($"localhost:{port}", ChannelCredentials.Insecure);
m_Client = new UnityToExternalProto.UnityToExternalProtoClient(channel);
var result = m_Client.Exchange(WrapMessage(unityOutput, 200));
var inputMessage = m_Client.Exchange(WrapMessage(null, 200));
unityInput = inputMessage.UnityInput;
#if UNITY_EDITOR
EditorApplication.playModeStateChanged += HandleOnPlayModeChanged;
#endif
if (result.Header.Status != 200 || inputMessage.Header.Status != 200)
{
m_IsOpen = false;
QuitCommandReceived?.Invoke();
}
return(result.UnityInput);
}
void NotifyQuitAndShutDownChannel()
{
QuitCommandReceived?.Invoke();
m_Channel.ShutdownAsync().Wait();
}
