# DO NOT EDIT THIS FILE MANUALLY
# This module is automatically generated by running mix task generate_file
# every change must be done inside the mix task directly
defmodule KlifeProtocol.Messages.ElectLeaders do
@moduledoc """
Kafka protocol ElectLeaders message
Request versions summary:
- Version 1 implements multiple leader election types, as described by KIP-460.
- Version 2 is the first flexible version.
Response versions summary:
- Version 1 adds a top-level error code.
- Version 2 is the first flexible version.
"""
alias KlifeProtocol.Deserializer
alias KlifeProtocol.Serializer
alias KlifeProtocol.Header
@api_key 43
@min_flexible_version_req 2
@min_flexible_version_res 2
@doc """
Receives a map and serialize it to kafka wire format of the given version.
Input content fields:
- election_type: Type of elections to conduct for the partition. A value of '0' elects the preferred replica. A value of '1' elects the first live replica if there are no in-sync replica. (int8 | versions 1+)
- topic_partitions: The topic partitions to elect leaders. ([]TopicPartitions | versions 0+)
- topic: The name of a topic. (string | versions 0+)
- partitions: The partitions of this topic whose leader should be elected. ([]int32 | versions 0+)
- timeout_ms: The time in ms to wait for the election to complete. (int32 | versions 0+)
"""
def serialize_request(%{headers: headers, content: content}, version) do
headers
|> Map.put(:request_api_key, @api_key)
|> Map.put(:request_api_version, version)
|> Header.serialize_request(req_header_version(version))
|> then(&Serializer.execute(content, request_schema(version), &1))
end
@doc """
Receive a binary in the kafka wire format and deserialize it into a map.
Response content fields:
- throttle_time_ms: The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota. (int32 | versions 0+)
- error_code: The top level response error code. (int16 | versions 1+)
- replica_election_results: The election results, or an empty array if the requester did not have permission and the request asks for all partitions. ([]ReplicaElectionResult | versions 0+)
- topic: The topic name (string | versions 0+)
- partition_result: The results for each partition ([]PartitionResult | versions 0+)
- partition_id: The partition id (int32 | versions 0+)
- error_code: The result error, or zero if there was no error. (int16 | versions 0+)
- error_message: The result message, or null if there was no error. (string | versions 0+)
"""
def deserialize_response(data, version, with_header? \\ true)
def deserialize_response(data, version, true) do
{:ok, {headers, rest_data}} = Header.deserialize_response(data, res_header_version(version))
case Deserializer.execute(rest_data, response_schema(version)) do
{:ok, {content, <<>>}} ->
{:ok, %{headers: headers, content: content}}
{:error, _reason} = err ->
err
end
end
def deserialize_response(data, version, false) do
case Deserializer.execute(data, response_schema(version)) do
{:ok, {content, <<>>}} ->
{:ok, %{content: content}}
{:error, _reason} = err ->
err
end
end
@doc """
Returns the message api key number.
"""
def api_key(), do: @api_key
@doc """
Returns the current max supported version of this message.
"""
def max_supported_version(), do: 2
@doc """
Returns the current min supported version of this message.
"""
def min_supported_version(), do: 0
defp req_header_version(msg_version),
do: if(msg_version >= @min_flexible_version_req, do: 2, else: 1)
defp res_header_version(msg_version),
do: if(msg_version >= @min_flexible_version_res, do: 1, else: 0)
defp request_schema(0),
do: [
topic_partitions:
{{:array,
[
topic: {:string, %{is_nullable?: false}},
partitions: {{:array, :int32}, %{is_nullable?: false}}
]}, %{is_nullable?: true}},
timeout_ms: {:int32, %{is_nullable?: false}}
]
defp request_schema(1),
do: [
election_type: {:int8, %{is_nullable?: false}},
topic_partitions:
{{:array,
[
topic: {:string, %{is_nullable?: false}},
partitions: {{:array, :int32}, %{is_nullable?: false}}
]}, %{is_nullable?: true}},
timeout_ms: {:int32, %{is_nullable?: false}}
]
defp request_schema(2),
do: [
election_type: {:int8, %{is_nullable?: false}},
topic_partitions:
{{:compact_array,
[
topic: {:compact_string, %{is_nullable?: false}},
partitions: {{:compact_array, :int32}, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, []}
]}, %{is_nullable?: true}},
timeout_ms: {:int32, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, []}
]
defp request_schema(unkown_version),
do: raise("Unknown version #{unkown_version} for message ElectLeaders")
defp response_schema(0),
do: [
throttle_time_ms: {:int32, %{is_nullable?: false}},
replica_election_results:
{{:array,
[
topic: {:string, %{is_nullable?: false}},
partition_result:
{{:array,
[
partition_id: {:int32, %{is_nullable?: false}},
error_code: {:int16, %{is_nullable?: false}},
error_message: {:string, %{is_nullable?: true}}
]}, %{is_nullable?: false}}
]}, %{is_nullable?: false}}
]
defp response_schema(1),
do: [
throttle_time_ms: {:int32, %{is_nullable?: false}},
error_code: {:int16, %{is_nullable?: false}},
replica_election_results:
{{:array,
[
topic: {:string, %{is_nullable?: false}},
partition_result:
{{:array,
[
partition_id: {:int32, %{is_nullable?: false}},
error_code: {:int16, %{is_nullable?: false}},
error_message: {:string, %{is_nullable?: true}}
]}, %{is_nullable?: false}}
]}, %{is_nullable?: false}}
]
defp response_schema(2),
do: [
throttle_time_ms: {:int32, %{is_nullable?: false}},
error_code: {:int16, %{is_nullable?: false}},
replica_election_results:
{{:compact_array,
[
topic: {:compact_string, %{is_nullable?: false}},
partition_result:
{{:compact_array,
[
partition_id: {:int32, %{is_nullable?: false}},
error_code: {:int16, %{is_nullable?: false}},
error_message: {:compact_string, %{is_nullable?: true}},
tag_buffer: {:tag_buffer, %{}}
]}, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, %{}}
]}, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, %{}}
]
defp response_schema(unkown_version),
do: raise("Unknown version #{unkown_version} for message ElectLeaders")
end
