Maxx Crawford
3b7003f055
PrivacyMetricsService only exposes getWeeklyStats() (a 7-day aggregate). Add getTodayStats(), which returns today's per-category counts in the same PrivacyMetricsStats shape, reusing _aggregateStats(). It queries TrackingDBService.getEventsByDateRange(now, now): the query day-truncates both bounds and events are bucketed by UTC date, so this selects exactly today's row. Differential Revision: https://phabricator.services.mozilla.com/D308833
123 lines
3.3 KiB
JavaScript
123 lines
3.3 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
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const lazy = {};
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XPCOMUtils.defineLazyServiceGetter(
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lazy,
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"TrackingDBService",
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"@mozilla.org/tracking-db-service;1",
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Ci.nsITrackingDBService
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);
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/**
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* @typedef {object} PrivacyMetricsStats
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* @property {number} total - Total blocks this week
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* @property {number} trackers - Tracker count
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* @property {number} cookies - Tracking cookie count
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* @property {number} fingerprinters - Fingerprinter count
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* @property {number} cryptominers - Cryptominer count
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* @property {number} socialTrackers - Social tracker count
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* @property {number} lastUpdated - Timestamp in milliseconds
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*/
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/**
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* Service for collecting privacy metrics from TrackingDBService.
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* Provides weekly tracking protection statistics.
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*/
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export const PrivacyMetricsService = {
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/**
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* Get weekly tracking protection statistics.
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*
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* @returns {Promise<PrivacyMetricsStats>}
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*/
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async getWeeklyStats() {
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/** @type {number} */
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const todayInMs = Date.now();
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/** @type {number} */
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const weekAgoInMs = todayInMs - 7 * 24 * 60 * 60 * 1000;
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const eventRows = await lazy.TrackingDBService.getEventsByDateRange(
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weekAgoInMs,
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todayInMs
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);
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return this._aggregateStats(eventRows);
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},
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/**
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* Get today's tracking protection statistics.
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*
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* TrackingDBService buckets events by UTC date and getEventsByDateRange
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* truncates both bounds to a date, so passing `now` for both selects just
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* today's row (matching how events are recorded).
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*
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* @returns {Promise<PrivacyMetricsStats>}
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*/
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async getTodayStats() {
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/** @type {number} */
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const todayInMs = Date.now();
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const eventRows = await lazy.TrackingDBService.getEventsByDateRange(
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todayInMs,
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todayInMs
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);
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return this._aggregateStats(eventRows);
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},
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/**
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* Aggregate TrackingDBService data by category.
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*
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* @param {Array} eventRows - Array of database rows from TrackingDBService
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* @returns {PrivacyMetricsStats}
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*/
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_aggregateStats(eventRows) {
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let trackers = 0;
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let cookies = 0;
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let fingerprinters = 0;
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let cryptominers = 0;
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let socialTrackers = 0;
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for (let row of eventRows) {
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const count = row.getResultByName("count");
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const type = row.getResultByName("type");
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switch (type) {
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case Ci.nsITrackingDBService.TRACKERS_ID:
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trackers += count;
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break;
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case Ci.nsITrackingDBService.TRACKING_COOKIES_ID:
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cookies += count;
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break;
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case Ci.nsITrackingDBService.FINGERPRINTERS_ID:
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case Ci.nsITrackingDBService.SUSPICIOUS_FINGERPRINTERS_ID:
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fingerprinters += count;
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break;
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case Ci.nsITrackingDBService.CRYPTOMINERS_ID:
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cryptominers += count;
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break;
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case Ci.nsITrackingDBService.SOCIAL_ID:
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socialTrackers += count;
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break;
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}
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}
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const total =
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trackers + cookies + cryptominers + fingerprinters + socialTrackers;
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return {
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total,
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trackers,
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cookies,
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fingerprinters,
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cryptominers,
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socialTrackers,
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lastUpdated: Date.now(),
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};
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},
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};
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