public ActorResponseMessage(
IActorResponseMessageHeader header,
IActorResponseMessageBody msgBody)
{
this.header = header;
this.msgBody = msgBody;
}
internal async Task <Tuple <string, byte[]> > DispatchWithRemotingAsync(ActorId actorId, string actorMethodName, string daprActorheader, Stream data, CancellationToken cancellationToken)
{
var actorMethodContext = ActorMethodContext.CreateForActor(actorMethodName);
// Get the serialized header
var actorMessageHeader = this.serializersManager.GetHeaderSerializer()
.DeserializeRequestHeaders(new MemoryStream(Encoding.ASCII.GetBytes(daprActorheader)));
var interfaceId = actorMessageHeader.InterfaceId;
// Get the deserialized Body.
var msgBodySerializer = this.serializersManager.GetRequestMessageBodySerializer(actorMessageHeader.InterfaceId);
IActorRequestMessageBody actorMessageBody;
using (var stream = new MemoryStream())
{
await data.CopyToAsync(stream);
actorMessageBody = msgBodySerializer.Deserialize(stream);
}
// Call the method on the method dispatcher using the Func below.
var methodDispatcher = this.methodDispatcherMap.GetDispatcher(actorMessageHeader.InterfaceId, actorMessageHeader.MethodId);
// Create a Func to be invoked by common method.
async Task <Tuple <string, byte[]> > RequestFunc(Actor actor, CancellationToken ct)
{
IActorResponseMessageBody responseMsgBody = null;
try
{
responseMsgBody = (IActorResponseMessageBody)await methodDispatcher.DispatchAsync(
actor,
actorMessageHeader.MethodId,
actorMessageBody,
this.messageBodyFactory,
ct);
return(this.CreateResponseMessage(responseMsgBody, interfaceId));
}
catch (Exception exception)
{
// return exception response message
return(this.CreateExceptionResponseMessage(exception));
}
}
return(await this.DispatchInternalAsync(actorId, actorMethodContext, RequestFunc, cancellationToken));
}
byte[] IActorResponseMessageBodySerializer.Serialize(IActorResponseMessageBody actorResponseMessageBody)
{
if (actorResponseMessageBody == null)
{
return(null);
}
using var stream = new MemoryStream();
using var writer = this.CreateXmlDictionaryWriter(stream);
this.serializer.WriteObject(writer, actorResponseMessageBody);
writer.Flush();
return(stream.ToArray());
}
public async Task <IActorResponseMessage> InvokeActorMethodWithRemotingAsync(ActorMessageSerializersManager serializersManager, IActorRequestMessage remotingRequestRequestMessage, CancellationToken cancellationToken = default)
{
var requestMessageHeader = remotingRequestRequestMessage.GetHeader();
var actorId = requestMessageHeader.ActorId.ToString();
var methodName = requestMessageHeader.MethodName;
var actorType = requestMessageHeader.ActorType;
var interfaceId = requestMessageHeader.InterfaceId;
var serializedHeader = serializersManager.GetHeaderSerializer()
.SerializeRequestHeader(remotingRequestRequestMessage.GetHeader());
var msgBodySeriaizer = serializersManager.GetRequestMessageBodySerializer(interfaceId);
var serializedMsgBody = msgBodySeriaizer.Serialize(remotingRequestRequestMessage.GetBody());
// Send Request
var relativeUrl = string.Format(CultureInfo.InvariantCulture, Constants.ActorMethodRelativeUrlFormat, actorType, actorId, methodName);
var requestId = Guid.NewGuid().ToString();
HttpRequestMessage RequestFunc()
{
var request = new HttpRequestMessage()
{
Method = HttpMethod.Put,
};
if (serializedMsgBody != null)
{
request.Content = new ByteArrayContent(serializedMsgBody);
request.Content.Headers.ContentType = System.Net.Http.Headers.MediaTypeHeaderValue.Parse("application/octet-stream; charset=utf-8");
}
request.Headers.Add(Constants.RequestHeaderName, Encoding.UTF8.GetString(serializedHeader, 0, serializedHeader.Length));
return(request);
}
var retval = await this.SendAsync(RequestFunc, relativeUrl, requestId, cancellationToken);
IActorResponseMessageHeader actorResponseMessageHeader = null;
if (retval != null && retval.Headers != null)
{
if (retval.Headers.TryGetValues(Constants.ErrorResponseHeaderName, out IEnumerable <string> headerValues))
{
var header = headerValues.First();
// DeSerialize Actor Response Message Header
actorResponseMessageHeader =
serializersManager.GetHeaderSerializer()
.DeserializeResponseHeaders(
new MemoryStream(Encoding.ASCII.GetBytes(header)));
}
}
// Get the http response message body content and extract out expected actor response message body
IActorResponseMessageBody actorResponseMessageBody = null;
if (retval != null && retval.Content != null)
{
var responseMessageBody = await retval.Content.ReadAsStreamAsync();
// Deserialize Actor Response Message Body
// Deserialize to RemoteException when there is response header otherwise normal path
var responseBodySerializer = serializersManager.GetResponseMessageBodySerializer(interfaceId);
// actorResponseMessageHeader is not null, it means there is remote exception
if (actorResponseMessageHeader != null)
{
var isDeserialzied =
RemoteException.ToException(
responseMessageBody,
out var remoteMethodException);
if (isDeserialzied)
{
throw new ActorMethodInvocationException(
"Remote Actor Method Exception",
remoteMethodException,
false /* non transient */);
}
else
{
throw new ServiceException(remoteMethodException.GetType().FullName, string.Format(
CultureInfo.InvariantCulture,
SR.ErrorDeserializationFailure,
remoteMethodException.ToString()));
}
}
actorResponseMessageBody = responseBodySerializer.Deserialize(responseMessageBody);
}
return(new ActorResponseMessage(actorResponseMessageHeader, actorResponseMessageBody));
}
