Package org.mockserver.grpc

Class GrpcStreamMessageEncoder

java.lang.Object

org.mockserver.grpc.GrpcStreamMessageEncoder

public final class GrpcStreamMessageEncoder
extends Object

Transport-neutral helper that encodes a single gRPC stream message (JSON) into a gRPC length-prefixed frame, ready to be written as an HTTP/2 DATA frame or an HTTP/3 DATA frame.

Shared by the HTTP/2 server-streaming handler (GrpcStreamResponseActionHandler) and the HTTP/3 server-streaming writer so the encoding semantics are identical across transports:

• empty / null JSON -> an empty gRPC frame (5-byte header, zero-length payload);
• JSON with a resolvable method descriptor -> protobuf-encoded then gRPC-framed;
• JSON without a descriptor -> the raw UTF-8 bytes gRPC-framed (best-effort passthrough so raw expectations still produce a valid gRPC frame).

Method Summary

Modifier and Type	Method	Description
static byte[]	encode(String json, com.google.protobuf.Descriptors.MethodDescriptor methodDescriptor, GrpcJsonMessageConverter converter)	Encode the given message JSON to a gRPC length-prefixed frame.
static byte[]	encode(String json, com.google.protobuf.Descriptors.MethodDescriptor methodDescriptor, GrpcProtoDescriptorStore descriptorStore)	Encode the given message JSON to a gRPC length-prefixed frame, resolving the converter from the descriptor store.
static byte[]	encode(GrpcStreamMessage message, com.google.protobuf.Descriptors.MethodDescriptor methodDescriptor, GrpcProtoDescriptorStore descriptorStore)	Encode a GrpcStreamMessage to a gRPC length-prefixed frame.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

encode

public static byte[] encode(String json,
 com.google.protobuf.Descriptors.MethodDescriptor methodDescriptor,
 GrpcJsonMessageConverter converter)

Encode the given message JSON to a gRPC length-prefixed frame.

Parameters:

json - the message JSON (may be null/empty)

methodDescriptor - the resolved gRPC method descriptor (may be null)

converter - the JSON/protobuf converter (may be null)

Returns:

the gRPC-framed bytes

encode

public static byte[] encode(String json,
 com.google.protobuf.Descriptors.MethodDescriptor methodDescriptor,
 GrpcProtoDescriptorStore descriptorStore)

Encode the given message JSON to a gRPC length-prefixed frame, resolving the converter from the descriptor store.

encode

public static byte[] encode(GrpcStreamMessage message,
 com.google.protobuf.Descriptors.MethodDescriptor methodDescriptor,
 GrpcProtoDescriptorStore descriptorStore)

Encode a GrpcStreamMessage to a gRPC length-prefixed frame.