@cruxstack/node-sdk/dist/queue.js

A Node.js SDK for event tracking, user traits lookup, validation, and automatic retry with queueing.

import { sendEvent } from './api';
const MAX_RETRIES = 3;
const RETRY_INTERVAL = 10000; // 10 seconds
const eventQueue = [];
let retryTimer = null;
export function addToQueue(event) {
    const queuedEvent = {
        event,
        attempts: 0,
        timestamp: Date.now()
    };
    eventQueue.push(queuedEvent);
    console.log(`Event queued: ${event.eid}`);
    // Start retry timer if not already running
    if (!retryTimer) {
        startRetryTimer();
    }
}
export function getQueueSize() {
    return eventQueue.length;
}
export function clearQueue() {
    eventQueue.length = 0;
    if (retryTimer) {
        clearInterval(retryTimer);
        retryTimer = null;
    }
}
function startRetryTimer() {
    retryTimer = setInterval(async () => {
        await processQueue();
    }, RETRY_INTERVAL);
}
async function processQueue() {
    if (eventQueue.length === 0) {
        // Stop timer if queue is empty
        if (retryTimer) {
            clearInterval(retryTimer);
            retryTimer = null;
        }
        return;
    }
    const eventsToRetry = [...eventQueue];
    eventQueue.length = 0; // Clear the queue
    for (const queuedEvent of eventsToRetry) {
        try {
            await sendEvent(queuedEvent.event);
            console.log(`Queued event sent successfully: ${queuedEvent.event.eid}`);
        }
        catch (error) {
            queuedEvent.attempts++;
            if (queuedEvent.attempts < MAX_RETRIES) {
                // Re-queue for retry
                eventQueue.push(queuedEvent);
                console.log(`Event retry ${queuedEvent.attempts}/${MAX_RETRIES}: ${queuedEvent.event.eid}`);
            }
            else {
                // Max retries reached, log error
                console.error(`Event failed after ${MAX_RETRIES} attempts: ${queuedEvent.event.eid}`, error);
            }
        }
    }
}