kafka-retry/dist/kafka-admin.js

Handle kafka non-blocking retries and dead letter topics for nestjs microservice

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.KafkaAdmin = void 0;
const constants_1 = require("./constants");
const utils_1 = require("./utils");
class KafkaAdmin {
    constructor(admin) {
        this.admin = admin;
    }
    async createRetryTopics(pattern, retryableTopic) {
        var _a;
        const currentTopics = await this.admin.listTopics();
        const currentRetryTopics = currentTopics.filter((topic) => {
            return new RegExp((0, utils_1.getPatternRetryTopic)(pattern)).test(topic);
        });
        const topics = [];
        const result = [];
        for (let index = 1; index <= retryableTopic.attempts; index++) {
            const retryTopicName = (0, utils_1.getRetryTopicName)(pattern, index);
            result.push(retryTopicName);
            if (index <= constants_1.RetryTopicConstants.MAX_ATTEMPTS &&
                !currentRetryTopics.includes(retryTopicName)) {
                topics.push(retryTopicName);
            }
        }
        const deadTopicName = (0, utils_1.getDeadTopicName)(pattern);
        if (!currentTopics.includes(deadTopicName)) {
            topics.push(deadTopicName);
        }
        const autoCreateRetryTopic = (_a = retryableTopic.autoCreateRetryTopic) !== null && _a !== void 0 ? _a : constants_1.AUTO_CREATE_RETRY_TOPIC;
        if (autoCreateRetryTopic) {
            await this.admin.createTopics({
                topics: topics.map((topic) => ({
                    topic: topic,
                    numPartitions: constants_1.RetryTopicConstants.DEFAULT_PARTITIONS,
                    replicationFactor: constants_1.RetryTopicConstants.REPLICATION_FACTOR,
                })),
            });
        }
        return result;
    }
}
exports.KafkaAdmin = KafkaAdmin;
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