/// <exception cref="System.Exception"/>
public virtual object Invoke(object proxy, MethodInfo method, object[] args)
{
long startTime = 0;
if (Log.IsDebugEnabled())
{
startTime = Time.Now();
}
TraceScope traceScope = null;
if (Trace.IsTracing())
{
traceScope = Trace.StartSpan(RpcClientUtil.MethodToTraceString(method));
}
ObjectWritable value;
try
{
value = (ObjectWritable)client.Call(RPC.RpcKind.RpcWritable, new WritableRpcEngine.Invocation
(method, args), remoteId, fallbackToSimpleAuth);
}
finally
{
if (traceScope != null)
{
traceScope.Close();
}
}
if (Log.IsDebugEnabled())
{
long callTime = Time.Now() - startTime;
Log.Debug("Call: " + method.Name + " " + callTime);
}
return(value.Get());
}
public virtual void TestIsMethodSupported()
{
server = new RPC.Builder(conf).SetProtocol(typeof(TestRPCCompatibility.TestProtocol2
)).SetInstance(new TestRPCCompatibility.TestImpl2()).SetBindAddress(Address).SetPort
(0).SetNumHandlers(2).SetVerbose(false).Build();
server.Start();
addr = NetUtils.GetConnectAddress(server);
TestRPCCompatibility.TestProtocol2 proxy = RPC.GetProxy <TestRPCCompatibility.TestProtocol2
>(TestRPCCompatibility.TestProtocol2.versionID, addr, conf);
bool supported = RpcClientUtil.IsMethodSupported(proxy, typeof(TestRPCCompatibility.TestProtocol2
), RPC.RpcKind.RpcWritable, RPC.GetProtocolVersion(typeof(TestRPCCompatibility.TestProtocol2
)), "echo");
Assert.True(supported);
supported = RpcClientUtil.IsMethodSupported(proxy, typeof(TestRPCCompatibility.TestProtocol2
), RPC.RpcKind.RpcProtocolBuffer, RPC.GetProtocolVersion(typeof(TestRPCCompatibility.TestProtocol2
)), "echo");
NUnit.Framework.Assert.IsFalse(supported);
}
/// <summary>This is the client side invoker of RPC method.</summary>
/// <remarks>
/// This is the client side invoker of RPC method. It only throws
/// ServiceException, since the invocation proxy expects only
/// ServiceException to be thrown by the method in case protobuf service.
/// ServiceException has the following causes:
/// <ol>
/// <li>Exceptions encountered on the client side in this method are
/// set as cause in ServiceException as is.</li>
/// <li>Exceptions from the server are wrapped in RemoteException and are
/// set as cause in ServiceException</li>
/// </ol>
/// Note that the client calling protobuf RPC methods, must handle
/// ServiceException by getting the cause from the ServiceException. If the
/// cause is RemoteException, then unwrap it to get the exception thrown by
/// the server.
/// </remarks>
/// <exception cref="Com.Google.Protobuf.ServiceException"/>
public virtual object Invoke(object proxy, MethodInfo method, object[] args)
{
long startTime = 0;
if (Log.IsDebugEnabled())
{
startTime = Time.Now();
}
if (args.Length != 2)
{
// RpcController + Message
throw new ServiceException("Too many parameters for request. Method: [" + method.
Name + "]" + ", Expected: 2, Actual: " + args.Length);
}
if (args[1] == null)
{
throw new ServiceException("null param while calling Method: [" + method.Name + "]"
);
}
TraceScope traceScope = null;
// if Tracing is on then start a new span for this rpc.
// guard it in the if statement to make sure there isn't
// any extra string manipulation.
if (Trace.IsTracing())
{
traceScope = Trace.StartSpan(RpcClientUtil.MethodToTraceString(method));
}
ProtobufRpcEngineProtos.RequestHeaderProto rpcRequestHeader = ConstructRpcRequestHeader
(method);
if (Log.IsTraceEnabled())
{
Log.Trace(Thread.CurrentThread().GetId() + ": Call -> " + remoteId + ": "
+ method.Name + " {" + TextFormat.ShortDebugString((Message)args[1]) + "}");
}
Message theRequest = (Message)args[1];
ProtobufRpcEngine.RpcResponseWrapper val;
try
{
val = (ProtobufRpcEngine.RpcResponseWrapper)client.Call(RPC.RpcKind.RpcProtocolBuffer
, new ProtobufRpcEngine.RpcRequestWrapper(rpcRequestHeader, theRequest), remoteId
, fallbackToSimpleAuth);
}
catch (Exception e)
{
if (Log.IsTraceEnabled())
{
Log.Trace(Thread.CurrentThread().GetId() + ": Exception <- " + remoteId +
": " + method.Name + " {" + e + "}");
}
if (Trace.IsTracing())
{
traceScope.GetSpan().AddTimelineAnnotation("Call got exception: " + e.Message);
}
throw new ServiceException(e);
}
finally
{
if (traceScope != null)
{
traceScope.Close();
}
}
if (Log.IsDebugEnabled())
{
long callTime = Time.Now() - startTime;
Log.Debug("Call: " + method.Name + " took " + callTime + "ms");
}
Message prototype = null;
try
{
prototype = GetReturnProtoType(method);
}
catch (Exception e)
{
throw new ServiceException(e);
}
Message returnMessage;
try
{
returnMessage = prototype.NewBuilderForType().MergeFrom(val.theResponseRead).Build
();
if (Log.IsTraceEnabled())
{
Log.Trace(Thread.CurrentThread().GetId() + ": Response <- " + remoteId +
": " + method.Name + " {" + TextFormat.ShortDebugString(returnMessage) + "}");
}
}
catch (Exception e)
{
throw new ServiceException(e);
}
return(returnMessage);
}
