Package org.apache.kafka.common.protocol.types

Examples of org.apache.kafka.common.protocol.types.Struct

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    private final String groupId;
    private final List<TopicPartition> partitions;

    public OffsetFetchRequest(String groupId, List<TopicPartition> partitions) {
        super(new Struct(curSchema));

        Map<String, List<Integer>> topicsData = CollectionUtils.groupDataByTopic(partitions);

        struct.set(GROUP_ID_KEY_NAME, groupId);
        List<Struct> topicArray = new ArrayList<Struct>();
        for (Map.Entry<String, List<Integer>> entries: topicsData.entrySet()) {
            Struct topicData = struct.instance(TOPICS_KEY_NAME);
            topicData.set(TOPIC_KEY_NAME, entries.getKey());
            List<Struct> partitionArray = new ArrayList<Struct>();
            for (Integer partiitonId : entries.getValue()) {
                Struct partitionData = topicData.instance(PARTITIONS_KEY_NAME);
                partitionData.set(PARTITION_KEY_NAME, partiitonId);
                partitionArray.add(partitionData);
            }
            topicData.set(PARTITIONS_KEY_NAME, partitionArray.toArray());
            topicArray.add(topicData);
        }
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    public OffsetFetchRequest(Struct struct) {
        super(struct);
        partitions = new ArrayList<TopicPartition>();
        for (Object topicResponseObj : struct.getArray(TOPICS_KEY_NAME)) {
            Struct topicResponse = (Struct) topicResponseObj;
            String topic = topicResponse.getString(TOPIC_KEY_NAME);
            for (Object partitionResponseObj : topicResponse.getArray(PARTITIONS_KEY_NAME)) {
                Struct partitionResponse = (Struct) partitionResponseObj;
                int partition = partitionResponse.getInt(PARTITION_KEY_NAME);
                partitions.add(new TopicPartition(topic, partition));
            }
        }
        groupId = struct.getString(GROUP_ID_KEY_NAME);
   }
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    private final Cluster cluster;
    private final Map<String, Errors> errors;

    public MetadataResponse(Cluster cluster) {
        super(new Struct(curSchema));

        List<Struct> brokerArray = new ArrayList<Struct>();
        for (Node node: cluster.nodes()) {
            Struct broker = struct.instance(BROKERS_KEY_NAME);
            broker.set(NODE_ID_KEY_NAME, node.id());
            broker.set(HOST_KEY_NAME, node.host());
            broker.set(PORT_KEY_NAME, node.port());
            brokerArray.add(broker);
        }
        struct.set(BROKERS_KEY_NAME, brokerArray.toArray());

        List<Struct> topicArray = new ArrayList<Struct>();
        for (String topic: cluster.topics()) {
            Struct topicData = struct.instance(TOPIC_METATDATA_KEY_NAME);
            topicData.set(TOPIC_ERROR_CODE_KEY_NAME, (short)0);  // no error
            topicData.set(TOPIC_KEY_NAME, topic);
            List<Struct> partitionArray = new ArrayList<Struct>();
            for (PartitionInfo fetchPartitionData : cluster.partitionsForTopic(topic)) {
                Struct partitionData = topicData.instance(PARTITION_METADATA_KEY_NAME);
                partitionData.set(PARTITION_ERROR_CODE_KEY_NAME, (short)0);  // no error
                partitionData.set(PARTITION_KEY_NAME, fetchPartitionData.partition());
                partitionData.set(LEADER_KEY_NAME, fetchPartitionData.leader().id());
                ArrayList<Integer> replicas = new ArrayList<Integer>();
                for (Node node: fetchPartitionData.replicas())
                    replicas.add(node.id());
                partitionData.set(REPLICAS_KEY_NAME, replicas.toArray());
                ArrayList<Integer> isr = new ArrayList<Integer>();
                for (Node node: fetchPartitionData.inSyncReplicas())
                    isr.add(node.id());
                partitionData.set(ISR_KEY_NAME, isr.toArray());
                partitionArray.add(partitionData);
            }
            topicData.set(PARTITION_METADATA_KEY_NAME, partitionArray.toArray());
            topicArray.add(topicData);
        }
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        super(struct);
        Map<String, Errors> errors = new HashMap<String, Errors>();
        Map<Integer, Node> brokers = new HashMap<Integer, Node>();
        Object[] brokerStructs = (Object[]) struct.get(BROKERS_KEY_NAME);
        for (int i = 0; i < brokerStructs.length; i++) {
            Struct broker = (Struct) brokerStructs[i];
            int nodeId = broker.getInt(NODE_ID_KEY_NAME);
            String host = broker.getString(HOST_KEY_NAME);
            int port = broker.getInt(PORT_KEY_NAME);
            brokers.put(nodeId, new Node(nodeId, host, port));
        }
        List<PartitionInfo> partitions = new ArrayList<PartitionInfo>();
        Object[] topicInfos = (Object[]) struct.get(TOPIC_METATDATA_KEY_NAME);
        for (int i = 0; i < topicInfos.length; i++) {
            Struct topicInfo = (Struct) topicInfos[i];
            short topicError = topicInfo.getShort(TOPIC_ERROR_CODE_KEY_NAME);
            String topic = topicInfo.getString(TOPIC_KEY_NAME);
            if (topicError == Errors.NONE.code()) {
                Object[] partitionInfos = (Object[]) topicInfo.get(PARTITION_METADATA_KEY_NAME);
                for (int j = 0; j < partitionInfos.length; j++) {
                    Struct partitionInfo = (Struct) partitionInfos[j];
                    int partition = partitionInfo.getInt(PARTITION_KEY_NAME);
                    int leader = partitionInfo.getInt(LEADER_KEY_NAME);
                    Node leaderNode = leader == -1 ? null : brokers.get(leader);
                    Object[] replicas = (Object[]) partitionInfo.get(REPLICAS_KEY_NAME);
                    Node[] replicaNodes = new Node[replicas.length];
                    for (int k = 0; k < replicas.length; k++)
                        replicaNodes[k] = brokers.get(replicas[k]);
                    Object[] isr = (Object[]) partitionInfo.get(ISR_KEY_NAME);
                    Node[] isrNodes = new Node[isr.length];
                    for (int k = 0; k < isr.length; k++)
                        isrNodes[k] = brokers.get(isr[k]);
                    partitions.add(new PartitionInfo(topic, partition, leaderNode, replicaNodes, isrNodes));
                }
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            this.maxBytes = maxBytes;
        }
    }

    public FetchRequest(int replicaId, int maxWait, int minBytes, Map<TopicPartition, PartitionData> fetchData) {
        super(new Struct(curSchema));
        Map<String, Map<Integer, PartitionData>> topicsData = CollectionUtils.groupDataByTopic(fetchData);

        struct.set(REPLICA_ID_KEY_NAME, replicaId);
        struct.set(MAX_WAIT_KEY_NAME, maxWait);
        struct.set(MIN_BYTES_KEY_NAME, minBytes);
        List<Struct> topicArray = new ArrayList<Struct>();
        for (Map.Entry<String, Map<Integer, PartitionData>> topicEntry: topicsData.entrySet()) {
            Struct topicData = struct.instance(TOPICS_KEY_NAME);
            topicData.set(TOPIC_KEY_NAME, topicEntry.getKey());
            List<Struct> partitionArray = new ArrayList<Struct>();
            for (Map.Entry<Integer, PartitionData> partitionEntry : topicEntry.getValue().entrySet()) {
                PartitionData fetchPartitionData = partitionEntry.getValue();
                Struct partitionData = topicData.instance(PARTITIONS_KEY_NAME);
                partitionData.set(PARTITION_KEY_NAME, partitionEntry.getKey());
                partitionData.set(FETCH_OFFSET_KEY_NAME, fetchPartitionData.offset);
                partitionData.set(MAX_BYTES_KEY_NAME, fetchPartitionData.maxBytes);
                partitionArray.add(partitionData);
            }
            topicData.set(PARTITIONS_KEY_NAME, partitionArray.toArray());
            topicArray.add(topicData);
        }
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        replicaId = struct.getInt(REPLICA_ID_KEY_NAME);
        maxWait = struct.getInt(MAX_WAIT_KEY_NAME);
        minBytes = struct.getInt(MIN_BYTES_KEY_NAME);
        fetchData = new HashMap<TopicPartition, PartitionData>();
        for (Object topicResponseObj : struct.getArray(TOPICS_KEY_NAME)) {
            Struct topicResponse = (Struct) topicResponseObj;
            String topic = topicResponse.getString(TOPIC_KEY_NAME);
            for (Object partitionResponseObj : topicResponse.getArray(PARTITIONS_KEY_NAME)) {
                Struct partitionResponse = (Struct) partitionResponseObj;
                int partition = partitionResponse.getInt(PARTITION_KEY_NAME);
                long offset = partitionResponse.getLong(FETCH_OFFSET_KEY_NAME);
                int maxBytes = partitionResponse.getInt(MAX_BYTES_KEY_NAME);
                PartitionData partitionData = new PartitionData(offset, maxBytes);
                fetchData.put(new TopicPartition(topic, partition), partitionData);
            }
        }
    }
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    private static String GROUP_ID_KEY_NAME = "group_id";

    private final String groupId;

    public ConsumerMetadataRequest(String groupId) {
        super(new Struct(curSchema));

        struct.set(GROUP_ID_KEY_NAME, groupId);
        this.groupId = groupId;
    }
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        super(header);
        correlationId = struct.getInt(CORRELATION_KEY_FIELD);
    }

    public ResponseHeader(int correlationId) {
        super(new Struct(Protocol.RESPONSE_HEADER));
        struct.set(CORRELATION_KEY_FIELD, correlationId);
        this.correlationId = correlationId;
    }
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    private final List<String> topics;
    private final String consumerId;
    private final String strategy;

    public JoinGroupRequest(String groupId, int sessionTimeout, List<String> topics, String consumerId, String strategy) {
        super(new Struct(curSchema));
        struct.set(GROUP_ID_KEY_NAME, groupId);
        struct.set(SESSION_TIMEOUT_KEY_NAME, sessionTimeout);
        struct.set(TOPICS_KEY_NAME, topics.toArray());
        struct.set(CONSUMER_ID_KEY_NAME, consumerId);
        struct.set(STRATEGY_KEY_NAME, strategy);
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            this.maxNumOffsets = maxNumOffsets;
        }
    }

    public ListOffsetRequest(int replicaId, Map<TopicPartition, PartitionData> offsetData) {
        super(new Struct(curSchema));
        Map<String, Map<Integer, PartitionData>> topicsData = CollectionUtils.groupDataByTopic(offsetData);

        struct.set(REPLICA_ID_KEY_NAME, replicaId);
        List<Struct> topicArray = new ArrayList<Struct>();
        for (Map.Entry<String, Map<Integer, PartitionData>> topicEntry: topicsData.entrySet()) {
            Struct topicData = struct.instance(TOPICS_KEY_NAME);
            topicData.set(TOPIC_KEY_NAME, topicEntry.getKey());
            List<Struct> partitionArray = new ArrayList<Struct>();
            for (Map.Entry<Integer, PartitionData> partitionEntry : topicEntry.getValue().entrySet()) {
                PartitionData offsetPartitionData = partitionEntry.getValue();
                Struct partitionData = topicData.instance(PARTITIONS_KEY_NAME);
                partitionData.set(PARTITION_KEY_NAME, partitionEntry.getKey());
                partitionData.set(TIMESTAMP_KEY_NAME, offsetPartitionData.timestamp);
                partitionData.set(MAX_NUM_OFFSETS_KEY_NAME, offsetPartitionData.maxNumOffsets);
                partitionArray.add(partitionData);
            }
            topicData.set(PARTITIONS_KEY_NAME, partitionArray.toArray());
            topicArray.add(topicData);
        }
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Related Classes of org.apache.kafka.common.protocol.types.Struct

  • org.apache.kafka.clients.NetworkClient
  • org.apache.kafka.clients.NetworkClientTest
  • org.apache.kafka.clients.producer.SenderTest
  • org.apache.kafka.common.protocol.types.ProtocolSerializationTest
  • org.apache.kafka.common.requests.ConsumerMetadataRequest
  • org.apache.kafka.common.requests.ConsumerMetadataResponse
  • org.apache.kafka.common.requests.FetchRequest
  • org.apache.kafka.common.requests.FetchResponse
  • org.apache.kafka.common.requests.HeartbeatRequest
  • org.apache.kafka.common.requests.HeartbeatResponse
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