/** * Get a snapshot of the cluster metadata from this response * @return the cluster snapshot */ public Cluster cluster() { Set<String> internalTopics = new HashSet<>(); List<PartitionInfo> partitions = new ArrayList<>(); for (TopicMetadata metadata : topicMetadata) { if (metadata.error == Errors.NONE) { if (metadata.isInternal) internalTopics.add(metadata.topic); for (PartitionMetadata partitionMetadata : metadata.partitionMetadata) { partitions.add(partitionMetaToInfo(metadata.topic, partitionMetadata)); } } } return new Cluster(this.clusterId, this.brokers, partitions, topicsByError(Errors.TOPIC_AUTHORIZATION_FAILED), topicsByError(Errors.INVALID_TOPIC_EXCEPTION), internalTopics, this.controller); }
/** * Transform a MetadataResponse into a new MetadataCache instance. */ private MetadataCache handleMetadataResponse(MetadataResponse metadataResponse, Predicate<String> topicsToRetain) { Set<String> internalTopics = new HashSet<>(); List<MetadataCache.PartitionInfoAndEpoch> partitions = new ArrayList<>(); for (MetadataResponse.TopicMetadata metadata : metadataResponse.topicMetadata()) { if (!topicsToRetain.test(metadata.topic())) continue; if (metadata.error() == Errors.NONE) { if (metadata.isInternal()) internalTopics.add(metadata.topic()); for (MetadataResponse.PartitionMetadata partitionMetadata : metadata.partitionMetadata()) { updatePartitionInfo(metadata.topic(), partitionMetadata, partitionInfo -> { int epoch = partitionMetadata.leaderEpoch().orElse(RecordBatch.NO_PARTITION_LEADER_EPOCH); partitions.add(new MetadataCache.PartitionInfoAndEpoch(partitionInfo, epoch)); }); } } } return new MetadataCache(metadataResponse.clusterId(), new ArrayList<>(metadataResponse.brokers()), partitions, metadataResponse.topicsByError(Errors.TOPIC_AUTHORIZATION_FAILED), metadataResponse.topicsByError(Errors.INVALID_TOPIC_EXCEPTION), internalTopics, metadataResponse.controller()); }