Class GrpcResponseMetadata (2.9.0)

GrpcResponseMetadata provides a mechanism to access the headers and trailers returned by a gRPC client method.

NOTE: the GrpcResponseMetadata class is not thread-safe and should NOT be re-used for multiple calls. A new instance of GrpcResponseMetadata should be constructed for each call that requires metadata to be accessed.

Example usage:

 GrpcResponseMetadata grpcResponseMetadata = new GrpcResponseMetadata();
 Foo foo = client.getFooCallable().call(getFooRequest, grpcResponseMetadata.createContextWithHandlers());
 Metadata headers = grpcResponseMetadata.getMetadata();
 Metadata trailers = grpcResponseMetadata.getTrailingMetadata(); 

Constructs a new call context from an existing ApiCallContext, and sets the CallOptions to add handlers to retrieve the headers and trailers, and make them available via the getMetadata and getTrailingMetadata methods.

Constructs a new call context and sets the CallOptions to add handlers to retrieve the headers and trailers, and make them available via the getMetadata and getTrailingMetadata methods.

Returns the headers from the gRPC method as Metadata. If the call has not completed, will return null.

Returns the trailers from the gRPC method as Metadata. If the call has not completed, will return null.

Handle the headers returned by an RPC.

Handle the trailers returned by an RPC.