internal virtual RPC.Server.VerProtocolImpl GetHighestSupportedProtocol(RPC.RpcKind
rpcKind, string protocolName)
{
long highestVersion = 0L;
RPC.Server.ProtoClassProtoImpl highest = null;
if (Log.IsDebugEnabled())
{
Log.Debug("Size of protoMap for " + rpcKind + " =" + GetProtocolImplMap(rpcKind).
Count);
}
foreach (KeyValuePair <RPC.Server.ProtoNameVer, RPC.Server.ProtoClassProtoImpl> pv
in GetProtocolImplMap(rpcKind))
{
if (pv.Key.protocol.Equals(protocolName))
{
if ((highest == null) || (pv.Key.version > highestVersion))
{
highest = pv.Value;
highestVersion = pv.Key.version;
}
}
}
if (highest == null)
{
return(null);
}
return(new RPC.Server.VerProtocolImpl(highestVersion, highest));
}
/// <exception cref="Org.Apache.Hadoop.Ipc.RpcServerException"/>
private static RPC.Server.ProtoClassProtoImpl GetProtocolImpl(RPC.Server server,
string protoName, long clientVersion)
{
RPC.Server.ProtoNameVer pv = new RPC.Server.ProtoNameVer(protoName, clientVersion
);
RPC.Server.ProtoClassProtoImpl impl = server.GetProtocolImplMap(RPC.RpcKind.RpcProtocolBuffer
)[pv];
if (impl == null)
{
// no match for Protocol AND Version
RPC.Server.VerProtocolImpl highest = server.GetHighestSupportedProtocol(RPC.RpcKind
.RpcProtocolBuffer, protoName);
if (highest == null)
{
throw new RpcNoSuchProtocolException("Unknown protocol: " + protoName);
}
// protocol supported but not the version that client wants
throw new RPC.VersionMismatch(protoName, clientVersion, highest.version);
}
return(impl);
}
/// <exception cref="System.Exception"/>
public virtual IWritable Call(RPC.Server server, string protocol, IWritable writableRequest
, long receiveTime)
{
ProtobufRpcEngine.RpcRequestWrapper request = (ProtobufRpcEngine.RpcRequestWrapper
)writableRequest;
ProtobufRpcEngineProtos.RequestHeaderProto rpcRequest = request.requestHeader;
string methodName = rpcRequest.GetMethodName();
string protoName = rpcRequest.GetDeclaringClassProtocolName();
long clientVersion = rpcRequest.GetClientProtocolVersion();
if (server.verbose)
{
Log.Info("Call: protocol=" + protocol + ", method=" + methodName);
}
RPC.Server.ProtoClassProtoImpl protocolImpl = GetProtocolImpl(server, protoName,
clientVersion);
BlockingService service = (BlockingService)protocolImpl.protocolImpl;
Descriptors.MethodDescriptor methodDescriptor = service.GetDescriptorForType().FindMethodByName
(methodName);
if (methodDescriptor == null)
{
string msg = "Unknown method " + methodName + " called on " + protocol + " protocol.";
Log.Warn(msg);
throw new RpcNoSuchMethodException(msg);
}
Message prototype = service.GetRequestPrototype(methodDescriptor);
Message param = prototype.NewBuilderForType().MergeFrom(request.theRequestRead).Build
();
Message result;
long startTime = Time.Now();
int qTime = (int)(startTime - receiveTime);
Exception exception = null;
try
{
server.rpcDetailedMetrics.Init(protocolImpl.protocolClass);
result = service.CallBlockingMethod(methodDescriptor, null, param);
}
catch (ServiceException e)
{
exception = (Exception)e.InnerException;
throw (Exception)e.InnerException;
}
catch (Exception e)
{
exception = e;
throw;
}
finally
{
int processingTime = (int)(Time.Now() - startTime);
if (Log.IsDebugEnabled())
{
string msg = "Served: " + methodName + " queueTime= " + qTime + " procesingTime= "
+ processingTime;
if (exception != null)
{
msg += " exception= " + exception.GetType().Name;
}
Log.Debug(msg);
}
string detailedMetricsName = (exception == null) ? methodName : exception.GetType
().Name;
server.rpcMetrics.AddRpcQueueTime(qTime);
server.rpcMetrics.AddRpcProcessingTime(processingTime);
server.rpcDetailedMetrics.AddProcessingTime(detailedMetricsName, processingTime);
}
return(new ProtobufRpcEngine.RpcResponseWrapper(result));
}
internal VerProtocolImpl(long ver, RPC.Server.ProtoClassProtoImpl protocolTarget)
{
this.version = ver;
this.protocolTarget = protocolTarget;
}