@awesomeniko/kafka-trail/dist/kafka/topic.js

A Node.js library for managing message queue with Kafka

import { v4 } from "uuid";
import { ktEncode, ktDecode } from "../libs/helpers/default-data-parser.js";
import { CreateDlqTopicName } from "../libs/helpers/topic-name.js";
const createTopicEvent = (settings, validatorFn) => {
    const validatePayload = (payload) => {
        validatorFn?.validate?.(payload);
        return true;
    };
    const fn = (payload, { messageKey, meta }) => {
        validatePayload(payload);
        let payloadToSend;
        if (validatorFn) {
            payloadToSend = validatorFn.encode(payload);
        }
        else {
            payloadToSend = ktEncode(payload);
        }
        return {
            topicName: settings.topic,
            message: payloadToSend,
            messageKey: messageKey,
            meta: {
                ...meta,
                traceId: meta?.traceId ?? v4(),
            },
        };
    };
    fn.topicSettings = settings;
    fn.decode = ((data) => {
        const decoded = (validatorFn?.decode ?? (ktDecode))(data);
        validatePayload(decoded);
        return decoded;
    });
    return fn;
};
export const KTTopic = (_settings, _validatorFn) => {
    throw new Error("Deprecated. use CreateKTTopic(...)");
};
export const DLQKTTopic = (settings, validatorFn) => {
    return createTopicEvent({ ...settings, createDLQ: true, topic: CreateDlqTopicName(settings.topic) }, validatorFn);
};
export const CreateKTTopic = (settings, validatorFn) => {
    const BaseTopic = createTopicEvent(settings, validatorFn);
    let DLQTopic = null;
    if (settings.createDLQ) {
        DLQTopic = DLQKTTopic(settings);
    }
    return { BaseTopic, DLQTopic };
};
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