How to use

name

method

in

org.apache.kafka.common.requests.JoinGroupRequest$ProtocolMetadata

@Test
public void testProtocolMetadataOrder() {
  RoundRobinAssignor roundRobin = new RoundRobinAssignor();
  RangeAssignor range = new RangeAssignor();
  try (Metrics metrics = new Metrics(time)) {
    ConsumerCoordinator coordinator = buildCoordinator(metrics, Arrays.<PartitionAssignor>asList(roundRobin, range),
                              ConsumerConfig.DEFAULT_EXCLUDE_INTERNAL_TOPICS, false, true);
    List<ProtocolMetadata> metadata = coordinator.metadata();
    assertEquals(2, metadata.size());
    assertEquals(roundRobin.name(), metadata.get(0).name());
    assertEquals(range.name(), metadata.get(1).name());
  }
  try (Metrics metrics = new Metrics(time)) {
    ConsumerCoordinator coordinator = buildCoordinator(metrics, Arrays.<PartitionAssignor>asList(range, roundRobin),
                              ConsumerConfig.DEFAULT_EXCLUDE_INTERNAL_TOPICS, false, true);
    List<ProtocolMetadata> metadata = coordinator.metadata();
    assertEquals(2, metadata.size());
    assertEquals(range.name(), metadata.get(0).name());
    assertEquals(roundRobin.name(), metadata.get(1).name());
  }
}

private void handleJoinGroupRequest(ChannelHandlerContext ctx, Request request) {
  JoinGroupRequest joinGroupRequest = (JoinGroupRequest) request.getBody();
  ResponseHeader responseHeader = new ResponseHeader(request.getHeader().correlationId());
  List<ProtocolEntry> protocols = joinGroupRequest.groupProtocols().stream().map(protocol -> new ProtocolEntry(protocol.name(), Utils.toArray(protocol.metadata()))).collect(Collectors.toList());
  coordinator.handleJoinGroup(
      joinGroupRequest.groupId(),
      joinGroupRequest.memberId(),
      request.getHeader().clientId(),
      request.getClientAddress().toString(),
      joinGroupRequest.rebalanceTimeout(),
      joinGroupRequest.sessionTimeout(),
      joinGroupRequest.protocolType(),
      protocols,
      (joinResult) -> {
        Map<String, ByteBuffer> members = joinResult.getMembers().entrySet().stream().collect(Collectors.toMap(k -> k.getKey(), k -> ByteBuffer.wrap(k.getValue())));
        JoinGroupResponse responseBody = new JoinGroupResponse(request.getHeader().apiVersion(), joinResult.getErrorCode(), joinResult.getGenerationId(),
            joinResult.getSubProtocol(), joinResult.getMemberId(), joinResult.getLeaderId(), members);
        logger.trace(String.format("Sending join group response %s for correlation id %d to client %s.",
            responseBody, request.getHeader().correlationId(), request.getHeader().clientId()));
        sendResponse(ctx, new Response(responseHeader, responseBody));
      }
  );
}