GrpcMethodInfo

/**
 * Grpc's implementation of {@link MethodInfo}.
 *
 * @param <ReqT> reqeust object of generic Type ReqT.
 * @param <RespT> response object of generic Type RespT.
 */
public class GrpcMethodInfo<ReqT, RespT> implements MethodInfo<MethodDescriptor> {

  private MethodDescriptor<ReqT, RespT> methodDescriptor;
  private MethodType methodType;

  public GrpcMethodInfo(MethodDescriptor<ReqT, RespT> methodDescriptor) {
    Preconditions.checkNotNull(
        methodDescriptor, new IllegalArgumentException("MethodDescriptor cannot be null"));
    this.methodDescriptor = methodDescriptor;
    this.methodType = getMethodTypeInternal(methodDescriptor.getType());
  }

  @Override
  public MethodDescriptor getTransportMethodInfo() {
    return methodDescriptor;
  }

  @Override
  @Nullable
  public String getUrlPath() {
    return methodDescriptor.getFullMethodName();
  }

  @Override
  @Nullable
  public String getServiceName() {
    return methodDescriptor.getServiceName();
  }

  @Override
  public boolean isUnary() {
    return methodDescriptor.getType() == io.grpc.MethodDescriptor.MethodType.UNARY;
  }

  @Override
  public MethodType getMethodType() {
    return methodType;
  }

  @Override
  public boolean isIdempotent() {
    return methodDescriptor.isIdempotent();
  }
}