@drip_sync/drip/dist/persister/flush_buffer.js

Scalable incremental sync for MongoDB aggregation pipelines

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.FlushBuffer = void 0;
const assert_1 = require("assert");
class FlushBuffer {
    _items = [];
    _timer;
    _maxLength;
    _flusher;
    constructor(maxLength, flusher) {
        this._maxLength = maxLength;
        this._flusher = flusher;
    }
    async push(t) {
        this._items.push(t);
        if (this._items.length >= this._maxLength) {
            await this._flush();
        }
        else {
            this._timer ??= setTimeout(() => void this._flush(), 0);
        }
    }
    _flush() {
        if (this._timer) {
            clearTimeout(this._timer);
            this._timer = undefined;
        }
        (0, assert_1.strict)(this._items.length > 0);
        const items = this._items;
        this._items = [];
        return this._flusher(items);
    }
    abort() {
        if (this._timer) {
            clearTimeout(this._timer);
            this._timer = undefined;
        }
    }
}
exports.FlushBuffer = FlushBuffer;