Module io.helidon.grpc.client
Package io.helidon.grpc.client

Class GrpcServiceClient

java.lang.Object
io.helidon.grpc.client.GrpcServiceClient
public class GrpcServiceClient extends Object
A gRPC Client for a specific gRPC service.

  • Method Details

    • builder

      public static GrpcServiceClient.Builder builder(io.grpc.Channel channel, ClientServiceDescriptor descriptor)
      Creates a GrpcServiceClient.Builder.
      Parameters:
      channel - the Channel to use to connect to the server
      descriptor - the ClientServiceDescriptor describing the gRPC service
      Returns:
      a new instance of GrpcServiceClient.Builder

    • create

      public static GrpcServiceClient create(io.grpc.Channel channel, ClientServiceDescriptor descriptor)
      Creates a GrpcServiceClient.
      Parameters:
      channel - the Channel to use to connect to the server
      descriptor - the ClientServiceDescriptor describing the gRPC service
      Returns:
      a new instance of GrpcServiceClient.Builder

    • serviceName

      public String serviceName()
      Obtain the service name.
      Returns:
      The name of the service

    • proxy

      public <T> T proxy(Class<T> type, Class<?>... extraTypes)
      Create a dynamic proxy for the specified interface that proxies calls to the wrapped gRPC service.
      Type Parameters:
      T - the type of the returned proxy
      Parameters:
      type - the interface to create a proxy for
      extraTypes - extra types for the proxy to implement
      Returns:
      a dynamic proxy that calls methods on this gRPC service

    • blockingUnary

      public <ReqT, RespT> RespT blockingUnary(String methodName, ReqT request)
      Invoke the specified unary method with the specified request object.
      Type Parameters:
      ReqT - the request type
      RespT - the response type
      Parameters:
      methodName - the method name to be invoked
      request - the request parameter
      Returns:
      The result of this invocation

    • unary

      public <ReqT, RespT> CompletionStage<RespT> unary(String methodName, ReqT request)
      Asynchronously invoke the specified unary method.
      Type Parameters:
      ReqT - the request type
      RespT - the response type
      Parameters:
      methodName - the method name to be invoked
      request - the request parameter
      Returns:
      A CompletionStage that will complete with the result of the unary method call

    • unary

      public <ReqT, RespT> void unary(String methodName, ReqT request, io.grpc.stub.StreamObserver<RespT> observer)
      Invoke the specified unary method.
      Type Parameters:
      ReqT - the request type
      RespT - the response type
      Parameters:
      methodName - the method name to be invoked
      request - the request parameter
      observer - a StreamObserver to receive the result

    • blockingServerStreaming

      public <ReqT, RespT> Iterator<RespT> blockingServerStreaming(String methodName, ReqT request)
      Invoke the specified server streaming method.
      Type Parameters:
      ReqT - the request type
      RespT - the response type
      Parameters:
      methodName - the method name to be invoked
      request - the request parameter
      Returns:
      an Iterator to obtain the streamed results

    • serverStreaming

      public <ReqT, RespT> void serverStreaming(String methodName, ReqT request, io.grpc.stub.StreamObserver<RespT> observer)
      Invoke the specified server streaming method.
      Type Parameters:
      ReqT - the request type
      RespT - the response type
      Parameters:
      methodName - the method name to be invoked
      request - the request parameter
      observer - a StreamObserver to receive the results

    • clientStreaming

      public <ReqT, RespT> CompletionStage<RespT> clientStreaming(String methodName, Iterable<ReqT> items)
      Invoke the specified client streaming method.
      Type Parameters:
      ReqT - the request type
      RespT - the response type
      Parameters:
      methodName - the method name to be invoked
      items - an Iterable of items to be streamed to the server
      Returns:
      A StreamObserver to retrieve the method call result

    • clientStreaming

      public <ReqT, RespT> CompletionStage<RespT> clientStreaming(String methodName, Stream<ReqT> items)
      Invoke the specified client streaming method.
      Type Parameters:
      ReqT - the request type
      RespT - the response type
      Parameters:
      methodName - the method name to be invoked
      items - a Stream of items to be streamed to the server
      Returns:
      A StreamObserver to retrieve the method call result

    • clientStreaming

      public <ReqT, RespT> io.grpc.stub.StreamObserver<ReqT> clientStreaming(String methodName, io.grpc.stub.StreamObserver<RespT> observer)
      Invoke the specified client streaming method.
      Type Parameters:
      ReqT - the request type
      RespT - the response type
      Parameters:
      methodName - the method name to be invoked
      observer - a StreamObserver to receive the result
      Returns:
      a StreamObserver to use to stream requests to the server

    • bidiStreaming

      public <ReqT, RespT> io.grpc.stub.StreamObserver<ReqT> bidiStreaming(String methodName, io.grpc.stub.StreamObserver<RespT> observer)
      Invoke the specified bidirectional streaming method.
      Type Parameters:
      ReqT - the request type
      RespT - the response type
      Parameters:
      methodName - the method name to be invoked.
      observer - a StreamObserver to receive the result
      Returns:
      A StreamObserver to use to stream requests to the server