# Source code for kafka.protocol.metadata

    from __future__ import absolute_import

    from kafka.protocol.api import Request, Response
    from kafka.protocol.types import Array, Boolean, Int16, Int32, Schema, String

    class MetadataResponse_v0(Response):
        API_KEY = 3
        API_VERSION = 0
        SCHEMA = Schema(
            ('brokers', Array(
                ('node_id', Int32),
                ('host', String('utf-8')),
                ('port', Int32))),
            ('topics', Array(
                ('error_code', Int16),
                ('topic', String('utf-8')),
                ('partitions', Array(
                    ('error_code', Int16),
                    ('partition', Int32),
                    ('leader', Int32),
                    ('replicas', Array(Int32)),
                    ('isr', Array(Int32))))))
        )

    class MetadataResponse_v1(Response):
        API_KEY = 3
        API_VERSION = 1
        SCHEMA = Schema(
            ('brokers', Array(
                ('node_id', Int32),
                ('host', String('utf-8')),
                ('port', Int32),
                ('rack', String('utf-8')))),
            ('controller_id', Int32),
            ('topics', Array(
                ('error_code', Int16),
                ('topic', String('utf-8')),
                ('is_internal', Boolean),
                ('partitions', Array(
                    ('error_code', Int16),
                    ('partition', Int32),
                    ('leader', Int32),
                    ('replicas', Array(Int32)),
                    ('isr', Array(Int32))))))
        )

    class MetadataResponse_v2(Response):
        API_KEY = 3
        API_VERSION = 2
        SCHEMA = Schema(
            ('brokers', Array(
                ('node_id', Int32),
                ('host', String('utf-8')),
                ('port', Int32),
                ('rack', String('utf-8')))),
            ('cluster_id', String('utf-8')),  # <-- Added cluster_id field in v2
            ('controller_id', Int32),
            ('topics', Array(
                ('error_code', Int16),
                ('topic', String('utf-8')),
                ('is_internal', Boolean),
                ('partitions', Array(
                    ('error_code', Int16),
                    ('partition', Int32),
                    ('leader', Int32),
                    ('replicas', Array(Int32)),
                    ('isr', Array(Int32))))))
        )

    class MetadataResponse_v3(Response):
        API_KEY = 3
        API_VERSION = 3
        SCHEMA = Schema(
            ('throttle_time_ms', Int32),
            ('brokers', Array(
                ('node_id', Int32),
                ('host', String('utf-8')),
                ('port', Int32),
                ('rack', String('utf-8')))),
            ('cluster_id', String('utf-8')),
            ('controller_id', Int32),
            ('topics', Array(
                ('error_code', Int16),
                ('topic', String('utf-8')),
                ('is_internal', Boolean),
                ('partitions', Array(
                    ('error_code', Int16),
                    ('partition', Int32),
                    ('leader', Int32),
                    ('replicas', Array(Int32)),
                    ('isr', Array(Int32))))))
        )

    class MetadataResponse_v4(Response):
        API_KEY = 3
        API_VERSION = 4
        SCHEMA = MetadataResponse_v3.SCHEMA

    class MetadataResponse_v5(Response):
        API_KEY = 3
        API_VERSION = 5
        SCHEMA = Schema(
            ('throttle_time_ms', Int32),
            ('brokers', Array(
                ('node_id', Int32),
                ('host', String('utf-8')),
                ('port', Int32),
                ('rack', String('utf-8')))),
            ('cluster_id', String('utf-8')),
            ('controller_id', Int32),
            ('topics', Array(
                ('error_code', Int16),
                ('topic', String('utf-8')),
                ('is_internal', Boolean),
                ('partitions', Array(
                    ('error_code', Int16),
                    ('partition', Int32),
                    ('leader', Int32),
                    ('replicas', Array(Int32)),
                    ('isr', Array(Int32)),
                    ('offline_replicas', Array(Int32))))))
        )

    class MetadataRequest_v0(Request):
        API_KEY = 3
        API_VERSION = 0
        RESPONSE_TYPE = MetadataResponse_v0
        SCHEMA = Schema(
            ('topics', Array(String('utf-8')))
        )
        ALL_TOPICS = None  # Empty Array (len 0) for topics returns all topics

    class MetadataRequest_v1(Request):
        API_KEY = 3
        API_VERSION = 1
        RESPONSE_TYPE = MetadataResponse_v1
        SCHEMA = MetadataRequest_v0.SCHEMA
        ALL_TOPICS = -1  # Null Array (len -1) for topics returns all topics
        NO_TOPICS = None  # Empty array (len 0) for topics returns no topics

    class MetadataRequest_v2(Request):
        API_KEY = 3
        API_VERSION = 2
        RESPONSE_TYPE = MetadataResponse_v2
        SCHEMA = MetadataRequest_v1.SCHEMA
        ALL_TOPICS = -1  # Null Array (len -1) for topics returns all topics
        NO_TOPICS = None  # Empty array (len 0) for topics returns no topics

    class MetadataRequest_v3(Request):
        API_KEY = 3
        API_VERSION = 3
        RESPONSE_TYPE = MetadataResponse_v3
        SCHEMA = MetadataRequest_v1.SCHEMA
        ALL_TOPICS = -1  # Null Array (len -1) for topics returns all topics
        NO_TOPICS = None  # Empty array (len 0) for topics returns no topics

    class MetadataRequest_v4(Request):
        API_KEY = 3
        API_VERSION = 4
        RESPONSE_TYPE = MetadataResponse_v4
        SCHEMA = Schema(
            ('topics', Array(String('utf-8'))),
            ('allow_auto_topic_creation', Boolean)
        )
        ALL_TOPICS = -1  # Null Array (len -1) for topics returns all topics
        NO_TOPICS = None  # Empty array (len 0) for topics returns no topics

    class MetadataRequest_v5(Request):
        """
        The v5 metadata request is the same as v4.
        An additional field for offline_replicas has been added to the v5 metadata response
        """
        API_KEY = 3
        API_VERSION = 5
        RESPONSE_TYPE = MetadataResponse_v5
        SCHEMA = MetadataRequest_v4.SCHEMA
        ALL_TOPICS = -1  # Null Array (len -1) for topics returns all topics
        NO_TOPICS = None  # Empty array (len 0) for topics returns no topics

    MetadataRequest = [
        MetadataRequest_v0, MetadataRequest_v1, MetadataRequest_v2,
        MetadataRequest_v3, MetadataRequest_v4, MetadataRequest_v5
    ]
    MetadataResponse = [
        MetadataResponse_v0, MetadataResponse_v1, MetadataResponse_v2,
        MetadataResponse_v3, MetadataResponse_v4, MetadataResponse_v5
    ]