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

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klife_protocol lib klife_protocol generated messages describe_topic_partitions.ex
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lib/klife_protocol/generated/messages/describe_topic_partitions.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.DescribeTopicPartitions do
@moduledoc """
Kafka protocol DescribeTopicPartitions message
Request versions summary:
Response versions summary:
"""
alias KlifeProtocol.Deserializer
alias KlifeProtocol.Serializer
alias KlifeProtocol.Header
@api_key 75
@min_flexible_version_req 0
@min_flexible_version_res 0
@doc """
Receives a map and serialize it to kafka wire format of the given version.
Input content fields:
- topics: The topics to fetch details for. ([]TopicRequest | versions 0+)
- name: The topic name. (string | versions 0+)
- response_partition_limit: The maximum number of partitions included in the response. (int32 | versions 0+)
- cursor: The first topic and partition index to fetch details for. (Cursor | versions 0+)
- topic_name: The name for the first topic to process. (string | versions 0+)
- partition_index: The partition index to start with. (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+)
- topics: Each topic in the response. ([]DescribeTopicPartitionsResponseTopic | versions 0+)
- error_code: The topic error, or 0 if there was no error. (int16 | versions 0+)
- name: The topic name. (string | versions 0+)
- topic_id: The topic id. (uuid | versions 0+)
- is_internal: True if the topic is internal. (bool | versions 0+)
- partitions: Each partition in the topic. ([]DescribeTopicPartitionsResponsePartition | versions 0+)
- error_code: The partition error, or 0 if there was no error. (int16 | versions 0+)
- partition_index: The partition index. (int32 | versions 0+)
- leader_id: The ID of the leader broker. (int32 | versions 0+)
- leader_epoch: The leader epoch of this partition. (int32 | versions 0+)
- replica_nodes: The set of all nodes that host this partition. ([]int32 | versions 0+)
- isr_nodes: The set of nodes that are in sync with the leader for this partition. ([]int32 | versions 0+)
- eligible_leader_replicas: The new eligible leader replicas otherwise. ([]int32 | versions 0+)
- last_known_elr: The last known ELR. ([]int32 | versions 0+)
- offline_replicas: The set of offline replicas of this partition. ([]int32 | versions 0+)
- topic_authorized_operations: 32-bit bitfield to represent authorized operations for this topic. (int32 | versions 0+)
- next_cursor: The next topic and partition index to fetch details for. (Cursor | versions 0+)
- topic_name: The name for the first topic to process. (string | versions 0+)
- partition_index: The partition index to start with. (int32 | 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: 0
@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: [
topics:
{{:compact_array,
[name: {:compact_string, %{is_nullable?: false}}, tag_buffer: {:tag_buffer, []}]},
%{is_nullable?: false}},
response_partition_limit: {:int32, %{is_nullable?: false}},
cursor:
{{:object,
[
topic_name: {:compact_string, %{is_nullable?: false}},
partition_index: {:int32, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, []}
]}, %{is_nullable?: true}},
tag_buffer: {:tag_buffer, []}
]
def request_schema(unkown_version),
do: raise("Unknown version #{unkown_version} for message DescribeTopicPartitions")
def response_schema(0),
do: [
throttle_time_ms: {:int32, %{is_nullable?: false}},
topics:
{{:compact_array,
[
error_code: {:int16, %{is_nullable?: false}},
name: {:compact_string, %{is_nullable?: true}},
topic_id: {:uuid, %{is_nullable?: false}},
is_internal: {:boolean, %{is_nullable?: false}},
partitions:
{{:compact_array,
[
error_code: {:int16, %{is_nullable?: false}},
partition_index: {:int32, %{is_nullable?: false}},
leader_id: {:int32, %{is_nullable?: false}},
leader_epoch: {:int32, %{is_nullable?: false}},
replica_nodes: {{:compact_array, :int32}, %{is_nullable?: false}},
isr_nodes: {{:compact_array, :int32}, %{is_nullable?: false}},
eligible_leader_replicas: {{:compact_array, :int32}, %{is_nullable?: true}},
last_known_elr: {{:compact_array, :int32}, %{is_nullable?: true}},
offline_replicas: {{:compact_array, :int32}, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, %{}}
]}, %{is_nullable?: false}},
topic_authorized_operations: {:int32, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, %{}}
]}, %{is_nullable?: false}},
next_cursor:
{{:object,
[
topic_name: {:compact_string, %{is_nullable?: false}},
partition_index: {:int32, %{is_nullable?: false}},
tag_buffer: {:tag_buffer, %{}}
]}, %{is_nullable?: true}},
tag_buffer: {:tag_buffer, %{}}
]
def response_schema(unkown_version),
do: raise("Unknown version #{unkown_version} for message DescribeTopicPartitions")
end