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use std::fmt::Debug;
use std::marker::PhantomData;
use kf_protocol::Decoder;
use kf_protocol::Encoder;
use serde::{Deserialize, Serialize};
use kf_protocol_api::ErrorCode;
use kf_protocol_api::Isolation;
use kf_protocol_api::Request;
use kf_protocol_derive::Decode;
use kf_protocol_derive::Encode;
use kf_protocol_derive::KfDefault;
#[derive(Encode, Decode, Serialize, Deserialize, KfDefault, Debug)]
pub struct KfFetchRequest<R>
where
R: Encoder + Decoder + Default + Debug,
{
pub replica_id: i32,
pub max_wait: i32,
pub min_bytes: i32,
#[fluvio_kf(min_version = 3, ignorable)]
pub max_bytes: i32,
#[fluvio_kf(min_version = 4)]
pub isolation_level: Isolation,
#[fluvio_kf(min_version = 7)]
pub session_id: i32,
#[fluvio_kf(min_version = 7)]
pub epoch: i32,
pub topics: Vec<FetchableTopic>,
#[fluvio_kf(min_version = 7)]
pub forgotten: Vec<ForgottenTopic>,
pub data: PhantomData<R>,
}
#[derive(Encode, Decode, Serialize, Deserialize, KfDefault, Debug)]
pub struct FetchableTopic {
pub name: String,
pub fetch_partitions: Vec<FetchPartition>,
}
#[derive(Encode, Decode, Serialize, Deserialize, KfDefault, Debug)]
pub struct ForgottenTopic {
#[fluvio_kf(min_version = 7)]
pub name: String,
#[fluvio_kf(min_version = 7)]
pub forgotten_partition_indexes: Vec<i32>,
}
#[derive(Encode, Decode, Serialize, Deserialize, KfDefault, Debug)]
pub struct FetchPartition {
pub partition_index: i32,
#[fluvio_kf(min_version = 9, ignorable)]
pub current_leader_epoch: i32,
pub fetch_offset: i64,
#[fluvio_kf(min_version = 5)]
pub log_start_offset: i64,
pub max_bytes: i32,
}
#[derive(Encode, Decode, Serialize, Deserialize, KfDefault, Debug)]
pub struct KfFetchResponse<R>
where
R: Encoder + Decoder + Default + Debug,
{
#[fluvio_kf(min_version = 1, ignorable)]
pub throttle_time_ms: i32,
#[fluvio_kf(min_version = 7)]
pub error_code: ErrorCode,
#[fluvio_kf(min_version = 7)]
pub session_id: i32,
pub topics: Vec<FetchableTopicResponse<R>>
}
impl <R>KfFetchResponse<R>
where R: Encoder + Decoder + Default + Debug {
pub fn find_partition(self,topic: &str,partition: i32) -> Option<FetchablePartitionResponse<R>> {
for topic_res in self.topics {
if topic_res.name == topic {
for partition_res in topic_res.partitions {
if partition_res.partition_index == partition {
return Some(partition_res);
}
}
}
}
None
}
}
#[derive(Encode, Decode, Serialize, Deserialize, KfDefault, Debug)]
pub struct FetchableTopicResponse<R>
where
R: Encoder + Decoder + Default + Debug,
{
pub name: String,
pub partitions: Vec<FetchablePartitionResponse<R>>,
pub data: PhantomData<R>,
}
#[derive(Encode, Decode, Serialize, Deserialize, KfDefault, Debug)]
pub struct FetchablePartitionResponse<R>
where
R: Encoder + Decoder + Default + Debug,
{
pub partition_index: i32,
pub error_code: ErrorCode,
pub high_watermark: i64,
#[fluvio_kf(min_version = 4, ignorable)]
pub last_stable_offset: i64,
#[fluvio_kf(min_version = 5, ignorable)]
pub log_start_offset: i64,
#[fluvio_kf(min_version = 4)]
pub aborted: Option<Vec<AbortedTransaction>>,
pub records: R,
}
#[derive(Encode, Decode, Serialize, Deserialize, KfDefault, Debug)]
pub struct AbortedTransaction {
#[fluvio_kf(min_version = 4)]
pub producer_id: i64,
#[fluvio_kf(min_version = 4)]
pub first_offset: i64,
}
impl<R> Request for KfFetchRequest<R>
where R: Debug + Decoder + Encoder
{
const API_KEY: u16 = 1;
const MIN_API_VERSION: i16 = 0;
const MAX_API_VERSION: i16 = 10;
const DEFAULT_API_VERSION: i16 = 10;
type Response = KfFetchResponse<R>;
}