@crawlee/core/autoscaling/cpu_load_signal.js

The scalable web crawling and scraping library for JavaScript/Node.js. Enables development of data extraction and web automation jobs (not only) with headless Chrome and Puppeteer.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.createCpuLoadSignal = createCpuLoadSignal;
const load_signal_1 = require("./load_signal");
/**
 * Tracks CPU usage via `SYSTEM_INFO` events and reports overload when
 * the platform or local OS metrics indicate the CPU is overloaded.
 */
function createCpuLoadSignal(options) {
    return load_signal_1.SnapshotStore.fromEvent({
        name: 'cpuInfo',
        overloadedRatio: options.overloadedRatio ?? 0.4,
        events: options.config.getEventManager(),
        event: "systemInfo" /* EventType.SYSTEM_INFO */,
        snapshotHistoryMillis: options.snapshotHistoryMillis,
        handler(store, systemInfo) {
            const { cpuCurrentUsage, isCpuOverloaded } = systemInfo;
            const createdAt = systemInfo.createdAt ? new Date(systemInfo.createdAt) : new Date();
            store.push({
                createdAt,
                isOverloaded: isCpuOverloaded,
                usedRatio: Math.ceil(cpuCurrentUsage / 100),
            }, createdAt);
        },
    });
}