import { v4 as uuid } from 'uuid' import { sendMB } from '../../../infrastructure/event-tracking' import { trackPdfDownloadEnabled } from './pdf-caching-flags' // VERSION should get incremented when making changes to caching behavior or // adjusting metrics collection. const VERSION = 9 // editing session id const EDITOR_SESSION_ID = uuid() const pdfCachingMetrics = { viewerId: EDITOR_SESSION_ID, } export function getPdfCachingMetrics() { return pdfCachingMetrics } export function trackPdfDownload(response, compileTimeClientE2E, t0) { const { timings, pdfCachingMinChunkSize } = response const deliveryLatencies = { compileTimeClientE2E, compileTimeServerE2E: timings?.compileE2E, } // There can be multiple "first" renderings with two pdf viewers. // E.g. two pdf detach tabs or pdf detacher plus pdf detach. // Let the pdfCachingMetrics round trip to account for pdf-detach. let isFirstRender = true function firstRenderDone({ latencyFetch, latencyRender, pdfCachingMetrics }) { if (!isFirstRender) return isFirstRender = false deliveryLatencies.totalDeliveryTime = Math.ceil(performance.now() - t0) deliveryLatencies.latencyFetch = latencyFetch if (latencyRender) { deliveryLatencies.latencyRender = latencyRender } if (trackPdfDownloadEnabled) { // Submit latency along with compile context. submitCompileMetrics({ pdfCachingMinChunkSize, ...deliveryLatencies, ...pdfCachingMetrics, }) } } return { deliveryLatencies, firstRenderDone, } } function submitCompileMetrics(metrics) { const leanMetrics = { version: VERSION, ...metrics, id: EDITOR_SESSION_ID, } sl_console.log('/event/compile-metrics', JSON.stringify(leanMetrics)) sendMB('compile-metrics-v6', leanMetrics) }