@Override public TopicMetadataResponse send(TopicMetadataRequest request) { java.util.List<String> topics = request.topics(); TopicMetadata[] topicMetadataArray = new TopicMetadata[topics.size()]; for (int i = 0; i < topicMetadataArray.length; i++) { String topic = topics.get(i); if (!topic.equals(topicName)) { topicMetadataArray[i] = new TopicMetadata(topic, null, Errors.UNKNOWN_TOPIC_OR_PARTITION.code()); } else { PartitionMetadata[] partitionMetadataArray = new PartitionMetadata[partitionCount]; for (int j = 0; j < partitionCount; j++) { java.util.List<BrokerEndPoint> emptyJavaList = Collections.emptyList(); List<BrokerEndPoint> emptyScalaList = JavaConversions.asScalaBuffer(emptyJavaList).toList(); partitionMetadataArray[j] = new PartitionMetadata(j, Some.apply(brokerArray[partitionLeaderIndices[j]]), emptyScalaList, emptyScalaList, Errors.NONE.code()); } Seq<PartitionMetadata> partitionsMetadata = List.fromArray(partitionMetadataArray); topicMetadataArray[i] = new TopicMetadata(topic, partitionsMetadata, Errors.NONE.code()); } } Seq<BrokerEndPoint> brokers = List.fromArray(brokerArray); Seq<TopicMetadata> topicsMetadata = List.fromArray(topicMetadataArray); return new TopicMetadataResponse(new kafka.api.TopicMetadataResponse(brokers, topicsMetadata, -1)); } }
TopicMetadataResponse response = new TopicMetadataResponse(kafka.api.TopicMetadataResponse.readFrom(byteBuffer)); return response;
private Map<String, TopicVO> getTopicMetadata(BlockingChannel channel, String... topics) { final TopicMetadataRequest request = new TopicMetadataRequest((short) 0, 0, clientId(), Arrays.asList(topics)); LOG.debug("Sending topic metadata request: {}", request); channel.send(request); final kafka.api.TopicMetadataResponse underlyingResponse = kafka.api.TopicMetadataResponse.readFrom(channel.receive().buffer()); LOG.debug("Received topic metadata response: {}", underlyingResponse); TopicMetadataResponse response = new TopicMetadataResponse(underlyingResponse); return response.topicsMetadata().stream() .filter(tmd -> tmd.errorCode() == ErrorMapping.NoError()) .map(this::processTopicMetadata) .collect(Collectors.toMap(TopicVO::getName, t -> t)); }