@platformatic/kafka
Version:
Modern and performant client for Apache Kafka
72 lines (70 loc) • 2.84 kB
JavaScript
import { ResponseError } from "../../errors.js";
import { EMPTY_BUFFER } from "../../protocol/definitions.js";
import { Writer } from "../../protocol/writer.js";
import { createAPI } from "../definitions.js";
/*
JoinGroup Request (Version: 9) => group_id session_timeout_ms rebalance_timeout_ms member_id group_instance_id protocol_type [protocols] reason TAG_BUFFER
group_id => COMPACT_STRING
session_timeout_ms => INT32
rebalance_timeout_ms => INT32
member_id => COMPACT_STRING
group_instance_id => COMPACT_NULLABLE_STRING
protocol_type => COMPACT_STRING
protocols => name metadata TAG_BUFFER
name => COMPACT_STRING
metadata => COMPACT_BYTES
reason => COMPACT_NULLABLE_STRING
*/
export function createRequest(groupId, sessionTimeoutMs, rebalanceTimeoutMs, memberId, groupInstanceId, protocolType, protocols, reason) {
return Writer.create()
.appendString(groupId)
.appendInt32(sessionTimeoutMs)
.appendInt32(rebalanceTimeoutMs)
.appendString(memberId)
.appendString(groupInstanceId)
.appendString(protocolType)
.appendArray(protocols, (w, protocol) => {
w.appendString(protocol.name).appendBytes(protocol.metadata ? protocol.metadata : EMPTY_BUFFER);
})
.appendString(reason)
.appendTaggedFields();
}
/*
JoinGroup Response (Version: 9) => throttle_time_ms error_code generation_id protocol_type protocol_name leader skip_assignment member_id [members] TAG_BUFFER
throttle_time_ms => INT32
error_code => INT16
generation_id => INT32
protocol_type => COMPACT_NULLABLE_STRING
protocol_name => COMPACT_NULLABLE_STRING
leader => COMPACT_STRING
skip_assignment => BOOLEAN
member_id => COMPACT_STRING
members => member_id group_instance_id metadata TAG_BUFFER
member_id => COMPACT_STRING
group_instance_id => COMPACT_NULLABLE_STRING
metadata => COMPACT_BYTES
*/
export function parseResponse(_correlationId, apiKey, apiVersion, reader) {
const response = {
throttleTimeMs: reader.readInt32(),
errorCode: reader.readInt16(),
generationId: reader.readInt32(),
protocolType: reader.readNullableString(),
protocolName: reader.readNullableString(),
leader: reader.readString(),
skipAssignment: reader.readBoolean(),
memberId: reader.readNullableString(),
members: reader.readArray(r => {
return {
memberId: r.readString(),
groupInstanceId: r.readNullableString(),
metadata: r.readNullableBytes()
};
})
};
if (response.errorCode !== 0) {
throw new ResponseError(apiKey, apiVersion, { '': response.errorCode }, response);
}
return response;
}
export const api = createAPI(11, 9, createRequest, parseResponse);