public static T RPC <T>(string serverId, Route route, IMessage msg)
{
byte[] data = ProtoMessageToByteArray(msg);
var ret = new RPCRes();
IntPtr pnt = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(RPCRes)));
try
{
Marshal.StructureToPtr(ret, pnt, false);
bool success = SendRPC(GoString.fromString(serverId), route, GoSlice.fromSlice <byte>(data), pnt);
if (success)
{
ret = (RPCRes)Marshal.PtrToStructure(pnt, typeof(RPCRes));
T protoRet = GetProtoMessageFromResponse <T>(ret);
FreeRPCRes(pnt);
return(protoRet);
}
throw new Exception("RPC call failed!");
} finally
{
Marshal.FreeHGlobal(pnt);
}
}
// TODO can we make this faster with some delegate-fu?
private static IntPtr RPCCbFunc(RPCReq req)
{
byte[] data = req.getReqData();
Route route = Route.fromString(req.route);
Logger.Debug("called with route: " + route + " and data: " + Encoding.UTF8.GetString(data));
var response = new Protos.Response();
string remoteName = String.Format("{0}.{1}", route.service, route.method);
IntPtr pnt = Marshal.AllocHGlobal(Marshal.SizeOf(new GoSlice()));
if (!remotesDict.ContainsKey(remoteName))
{
response = GetErrorResponse("PIT-404", String.Format("remote not found! remote name: {0}", remoteName));
byte[] resBytes = ProtoMessageToByteArray(response);
Marshal.StructureToPtr(GoSlice.fromSlice <byte>(resBytes), pnt, false);
return(pnt);
}
RemoteMethod remote = remotesDict[remoteName];
Logger.Debug(String.Format("found delegate: {0}", remote));
try{
var arg = (IMessage)Activator.CreateInstance(remote.argType);
arg.MergeFrom(new CodedInputStream(data));
// invoke is slow :/
var ans = (IMessage)remote.method.Invoke(remote.obj, new object[] { arg });
byte[] ansBytes = ProtoMessageToByteArray(ans);
response.Data = ByteString.CopyFrom(ansBytes);
byte[] resBytes = ProtoMessageToByteArray(response);
Marshal.StructureToPtr(GoSlice.fromSlice <byte>(resBytes), pnt, false);
return(pnt);
} catch (Exception e) {
response = GetErrorResponse("PIT-500", e.Message);
byte[] resBytes = ProtoMessageToByteArray(response);
Marshal.StructureToPtr(GoSlice.fromSlice <byte>(resBytes), pnt, false);
return(pnt);
}
}