pg-trx-outbox/dist/src/es.js

Transactional outbox of Postgres for Node.js with little Event Sourcing

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Es = void 0;
const pg_cursor_1 = __importDefault(require("pg-cursor"));
class Es {
    lastEventId = '0';
    pg;
    adapter;
    options;
    constructor(pg, adapter, options) {
        this.pg = pg;
        this.adapter = adapter;
        this.options = options;
    }
    async start() {
        await this.initSync();
    }
    async stop() { }
    setLastEventId(index) {
        this.lastEventId = index;
    }
    getLastEventId() {
        return this.lastEventId;
    }
    async initSync() {
        const client = await this.pg.getClient();
        const cursor = client.query(new pg_cursor_1.default(`
          select
            id,
            topic,
            key,
            value,
            context_id
          from pg_trx_outbox
          where is_event and id > $1
          order by id
        `, [this.getLastEventId()]));
        while (true) {
            const messages = await cursor.read(this.options.eventSourcingOptions?.initSyncBatchSize ?? 100);
            if (!messages.length) {
                break;
            }
            await this.adapter.send(messages);
            this.setLastEventId(messages.at(-1).id);
        }
        await cursor.close();
        client.release();
    }
}
exports.Es = Es;