@platformatic/kafka
Version:
Modern and performant client for Apache Kafka
82 lines (81 loc) • 3.23 kB
JavaScript
import { ResponseError } from "../../errors.js";
import { Writer } from "../../protocol/writer.js";
import { createAPI } from "../definitions.js";
/*
OffsetFetch Request (Version: 9) => [groups] require_stable TAG_BUFFER
groups => group_id member_id member_epoch [topics] TAG_BUFFER
group_id => COMPACT_STRING
member_id => COMPACT_NULLABLE_STRING
member_epoch => INT32
topics => name [partition_indexes] TAG_BUFFER
name => COMPACT_STRING
partition_indexes => INT32
require_stable => BOOLEAN
*/
export function createRequest(groups, requireStable) {
return Writer.create()
.appendArray(groups, (w, g) => {
w.appendString(g.groupId)
.appendString(g.memberId)
.appendInt32(g.memberEpoch)
.appendArray(g.topics, (w, t) => {
w.appendString(t.name).appendArray(t.partitionIndexes, (w, i) => w.appendInt32(i), true, false);
});
})
.appendBoolean(requireStable)
.appendTaggedFields();
}
/*
OffsetFetch Response (Version: 9) => throttle_time_ms [groups] TAG_BUFFER
throttle_time_ms => INT32
groups => group_id [topics] error_code TAG_BUFFER
group_id => COMPACT_STRING
topics => name [partitions] TAG_BUFFER
name => COMPACT_STRING
partitions => partition_index committed_offset committed_leader_epoch metadata error_code TAG_BUFFER
partition_index => INT32
committed_offset => INT64
committed_leader_epoch => INT32
metadata => COMPACT_NULLABLE_STRING
error_code => INT16
error_code => INT16
*/
export function parseResponse(_correlationId, apiKey, apiVersion, reader) {
const errors = [];
const response = {
throttleTimeMs: reader.readInt32(),
groups: reader.readArray((r, i) => {
const group = {
groupId: r.readString(),
topics: r.readArray((r, j) => {
return {
name: r.readString(),
partitions: r.readArray((r, k) => {
const partition = {
partitionIndex: r.readInt32(),
committedOffset: r.readInt64(),
committedLeaderEpoch: r.readInt32(),
metadata: r.readNullableString(),
errorCode: r.readInt16()
};
if (partition.errorCode !== 0) {
errors.push([`/groups/${i}/topics/${j}/partitions/${k}`, partition.errorCode]);
}
return partition;
})
};
}),
errorCode: r.readInt16()
};
if (group.errorCode !== 0) {
errors.push([`/groups/${i}`, group.errorCode]);
}
return group;
})
};
if (errors.length) {
throw new ResponseError(apiKey, apiVersion, Object.fromEntries(errors), response);
}
return response;
}
export const api = createAPI(9, 9, createRequest, parseResponse);