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from __future__ import absolute_import
from kafka.protocol.api import Request, Response
from kafka.protocol.types import Array, Int8, Int16, Int32, Int64, Schema, String, Bytes
class FetchResponse_v0(Response):
API_KEY = 1
API_VERSION = 0
SCHEMA = Schema(
('topics', Array(
('topics', String('utf-8')),
('partitions', Array(
('partition', Int32),
('error_code', Int16),
('highwater_offset', Int64),
('message_set', Bytes)))))
)
class FetchResponse_v1(Response):
API_KEY = 1
API_VERSION = 1
SCHEMA = Schema(
('throttle_time_ms', Int32),
('topics', Array(
('topics', String('utf-8')),
('partitions', Array(
('partition', Int32),
('error_code', Int16),
('highwater_offset', Int64),
('message_set', Bytes)))))
)
class FetchResponse_v2(Response):
API_KEY = 1
API_VERSION = 2
SCHEMA = FetchResponse_v1.SCHEMA # message format changed internally
class FetchResponse_v3(Response):
API_KEY = 1
API_VERSION = 3
SCHEMA = FetchResponse_v2.SCHEMA
class FetchResponse_v4(Response):
API_KEY = 1
API_VERSION = 4
SCHEMA = Schema(
('throttle_time_ms', Int32),
('topics', Array(
('topics', String('utf-8')),
('partitions', Array(
('partition', Int32),
('error_code', Int16),
('highwater_offset', Int64),
('last_stable_offset', Int64),
('aborted_transactions', Array(
('producer_id', Int64),
('first_offset', Int64))),
('message_set', Bytes)))))
)
class FetchResponse_v5(Response):
API_KEY = 1
API_VERSION = 5
SCHEMA = Schema(
('throttle_time_ms', Int32),
('topics', Array(
('topics', String('utf-8')),
('partitions', Array(
('partition', Int32),
('error_code', Int16),
('highwater_offset', Int64),
('last_stable_offset', Int64),
('log_start_offset', Int64),
('aborted_transactions', Array(
('producer_id', Int64),
('first_offset', Int64))),
('message_set', Bytes)))))
)
class FetchResponse_v6(Response):
"""
Same as FetchResponse_v5. The version number is bumped up to indicate that the client supports KafkaStorageException.
The KafkaStorageException will be translated to NotLeaderForPartitionException in the response if version <= 5
"""
API_KEY = 1
API_VERSION = 6
SCHEMA = FetchResponse_v5.SCHEMA
class FetchRequest_v0(Request):
API_KEY = 1
API_VERSION = 0
RESPONSE_TYPE = FetchResponse_v0
SCHEMA = Schema(
('replica_id', Int32),
('max_wait_time', Int32),
('min_bytes', Int32),
('topics', Array(
('topic', String('utf-8')),
('partitions', Array(
('partition', Int32),
('offset', Int64),
('max_bytes', Int32)))))
)
class FetchRequest_v1(Request):
API_KEY = 1
API_VERSION = 1
RESPONSE_TYPE = FetchResponse_v1
SCHEMA = FetchRequest_v0.SCHEMA
class FetchRequest_v2(Request):
API_KEY = 1
API_VERSION = 2
RESPONSE_TYPE = FetchResponse_v2
SCHEMA = FetchRequest_v1.SCHEMA
class FetchRequest_v3(Request):
API_KEY = 1
API_VERSION = 3
RESPONSE_TYPE = FetchResponse_v3
SCHEMA = Schema(
('replica_id', Int32),
('max_wait_time', Int32),
('min_bytes', Int32),
('max_bytes', Int32), # This new field is only difference from FR_v2
('topics', Array(
('topic', String('utf-8')),
('partitions', Array(
('partition', Int32),
('offset', Int64),
('max_bytes', Int32)))))
)
class FetchRequest_v4(Request):
# Adds isolation_level field
API_KEY = 1
API_VERSION = 4
RESPONSE_TYPE = FetchResponse_v4
SCHEMA = Schema(
('replica_id', Int32),
('max_wait_time', Int32),
('min_bytes', Int32),
('max_bytes', Int32),
('isolation_level', Int8),
('topics', Array(
('topic', String('utf-8')),
('partitions', Array(
('partition', Int32),
('offset', Int64),
('max_bytes', Int32)))))
)
class FetchRequest_v5(Request):
# This may only be used in broker-broker api calls
API_KEY = 1
API_VERSION = 5
RESPONSE_TYPE = FetchResponse_v5
SCHEMA = Schema(
('replica_id', Int32),
('max_wait_time', Int32),
('min_bytes', Int32),
('max_bytes', Int32),
('isolation_level', Int8),
('topics', Array(
('topic', String('utf-8')),
('partitions', Array(
('partition', Int32),
('fetch_offset', Int64),
('log_start_offset', Int64),
('max_bytes', Int32)))))
)
class FetchRequest_v6(Request):
"""
The body of FETCH_REQUEST_V6 is the same as FETCH_REQUEST_V5.
The version number is bumped up to indicate that the client supports KafkaStorageException.
The KafkaStorageException will be translated to NotLeaderForPartitionException in the response if version <= 5
"""
API_KEY = 1
API_VERSION = 6
RESPONSE_TYPE = FetchResponse_v6
SCHEMA = FetchRequest_v5.SCHEMA
FetchRequest = [
FetchRequest_v0, FetchRequest_v1, FetchRequest_v2,
FetchRequest_v3, FetchRequest_v4, FetchRequest_v5,
FetchRequest_v6
]
FetchResponse = [
FetchResponse_v0, FetchResponse_v1, FetchResponse_v2,
FetchResponse_v3, FetchResponse_v4, FetchResponse_v5,
FetchResponse_v6
]
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