Packages

An Elixir implementation of the Kafka protocol. It enables communication with Kafka brokers using standard Elixir data structures without the need for manual serialization.

Current section

Files

Jump to
klife_protocol lib klife_protocol generated messages begin_quorum_epoch.ex
Raw

lib/klife_protocol/generated/messages/begin_quorum_epoch.ex

# 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.BeginQuorumEpoch do
@moduledoc """
Kafka protocol BeginQuorumEpoch message
Request versions summary:
- Version 1 adds flexible versions, voter key and leader endpoints (KIP-853)
Response versions summary:
- Version 1 adds flexible versions and leader endpoint (KIP-853)
"""
alias KlifeProtocol.Deserializer
alias KlifeProtocol.Serializer
alias KlifeProtocol.Header
@api_key 53
@min_flexible_version_req 1
@min_flexible_version_res 1
@doc """
Receives a map and serialize it to kafka wire format of the given version.
Input content fields:
- cluster_id: The cluster id. (string | versions 0+)
- voter_id: The replica id of the voter receiving the request. (int32 | versions 1+)
- topics: The topics. ([]TopicData | versions 0+)
- topic_name: The topic name. (string | versions 0+)
- partitions: The partitions. ([]PartitionData | versions 0+)
- partition_index: The partition index. (int32 | versions 0+)
- voter_directory_id: The directory id of the receiving replica. (uuid | versions 1+)
- leader_id: The ID of the newly elected leader. (int32 | versions 0+)
- leader_epoch: The epoch of the newly elected leader. (int32 | versions 0+)
- leader_endpoints: Endpoints for the leader. ([]LeaderEndpoint | versions 1+)
- name: The name of the endpoint. (string | versions 1+)
- host: The node's hostname. (string | versions 1+)
- port: The node's port. (uint16 | versions 1+)
"""
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:
- error_code: The top level error code. (int16 | versions 0+)
- topics: The topic data. ([]TopicData | versions 0+)
- topic_name: The topic name. (string | versions 0+)
- partitions: The partition data. ([]PartitionData | versions 0+)
- partition_index: The partition index. (int32 | versions 0+)
- error_code: The error code for this partition. (int16 | versions 0+)
- leader_id: The ID of the current leader or -1 if the leader is unknown. (int32 | versions 0+)
- leader_epoch: The latest known leader epoch. (int32 | versions 0+)
- node_endpoints: Endpoints for all leaders enumerated in PartitionData. ([]NodeEndpoint | versions 1+)
- node_id: The ID of the associated node. (int32 | versions 1+)
- host: The node's hostname. (string | versions 1+)
- port: The node's port. (uint16 | versions 1+)
"""
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: 1
@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)
def request_schema(0),
do: [
cluster_id: {:string, %{is_nullable?: true}},
topics:
{{:array,
[
topic_name: {:string, %{is_nullable?: false}},
partitions:
{{:array,
[
partition_index: {:int32, %{is_nullable?: false}},
leader_id: {:int32, %{is_nullable?: false}},
leader_epoch: {:int32, %{is_nullable?: false}}
]}, %{is_nullable?: false}}
]}, %{is_nullable?: false}}
]
def request_schema(1),
do: [
cluster_id: {:compact_string, %{is_nullable?: true}},
voter_id: {:int32, %{is_nullable?: false}},
topics:
{{:compact_array,
[
topic_name: {:compact_string, %{is_nullable?: false}},
partitions:
{{:compact_array,
[
partition_index: {:int32, %{is_nullable?: false}},
voter_directory_id: {:uuid, %{is_nullable?: false}},
leader_id: {:int32, %{is_nullable?: false}},
leader_epoch: {:int32, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, []}
]}, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, []}
]}, %{is_nullable?: false}},
leader_endpoints:
{{:compact_array,
[
name: {:compact_string, %{is_nullable?: false}},
host: {:compact_string, %{is_nullable?: false}},
port: {:uint16, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, []}
]}, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, []}
]
def request_schema(unkown_version),
do: raise("Unknown version #{unkown_version} for message BeginQuorumEpoch")
def response_schema(0),
do: [
error_code: {:int16, %{is_nullable?: false}},
topics:
{{:array,
[
topic_name: {:string, %{is_nullable?: false}},
partitions:
{{:array,
[
partition_index: {:int32, %{is_nullable?: false}},
error_code: {:int16, %{is_nullable?: false}},
leader_id: {:int32, %{is_nullable?: false}},
leader_epoch: {:int32, %{is_nullable?: false}}
]}, %{is_nullable?: false}}
]}, %{is_nullable?: false}}
]
def response_schema(1),
do: [
error_code: {:int16, %{is_nullable?: false}},
topics:
{{:compact_array,
[
topic_name: {:compact_string, %{is_nullable?: false}},
partitions:
{{:compact_array,
[
partition_index: {:int32, %{is_nullable?: false}},
error_code: {:int16, %{is_nullable?: false}},
leader_id: {:int32, %{is_nullable?: false}},
leader_epoch: {:int32, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, %{}}
]}, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, %{}}
]}, %{is_nullable?: false}},
tag_buffer:
{:tag_buffer,
%{
0 =>
{{:node_endpoints,
{:compact_array,
[
node_id: {:int32, %{is_nullable?: false}},
host: {:compact_string, %{is_nullable?: false}},
port: {:uint16, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, %{}}
]}}, %{is_nullable?: false}}
}}
]
def response_schema(unkown_version),
do: raise("Unknown version #{unkown_version} for message BeginQuorumEpoch")
end