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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at
http://mozilla.org/MPL/2.0/. */
import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
BrowserSearchTelemetry: "resource:///modules/BrowserSearchTelemetry.sys.mjs",
ExperimentAPI: "resource://nimbus/ExperimentAPI.sys.mjs",
NimbusFeatures: "resource://nimbus/ExperimentAPI.sys.mjs",
Region: "resource://gre/modules/Region.sys.mjs",
RemoteSettings: "resource://services-settings/remote-settings.sys.mjs",
SearchUtils: "resource://gre/modules/SearchUtils.sys.mjs",
Sqlite: "resource://gre/modules/Sqlite.sys.mjs",
});
ChromeUtils.defineLazyGetter(lazy, "gCryptoHash", () => {
return Cc["@mozilla.org/security/hash;1"].createInstance(Ci.nsICryptoHash);
});
// Exported for tests.
export const ADLINK_CHECK_TIMEOUT_MS = 1000;
// Unlike the standard adlink check, the timeout for single page apps is not
// based on a content event within the page, like DOMContentLoaded or load.
// Thus, we aim for a longer timeout to account for when the server might be
// slow to update the content on the page.
export const SPA_ADLINK_CHECK_TIMEOUT_MS = 2500;
export const TELEMETRY_SETTINGS_KEY = "search-telemetry-v2";
export const TELEMETRY_CATEGORIZATION_KEY = "search-categorization";
export const TELEMETRY_CATEGORIZATION_DOWNLOAD_SETTINGS = {
// Units are in milliseconds.
base: 3600000,
minAdjust: 60000,
maxAdjust: 600000,
maxTriesPerSession: 2,
};
export const SEARCH_TELEMETRY_SHARED = {
PROVIDER_INFO: "SearchTelemetry:ProviderInfo",
LOAD_TIMEOUT: "SearchTelemetry:LoadTimeout",
SPA_LOAD_TIMEOUT: "SearchTelemetry:SPALoadTimeout",
};
const impressionIdsWithoutEngagementsSet = new Set();
export const CATEGORIZATION_SETTINGS = {
STORE_SCHEMA: 1,
STORE_FILE: "domain_to_categories.sqlite",
STORE_NAME: "domain_to_categories",
MAX_DOMAINS_TO_CATEGORIZE: 10,
MINIMUM_SCORE: 0,
STARTING_RANK: 2,
IDLE_TIMEOUT_SECONDS: 60 * 60,
WAKE_TIMEOUT_MS: 60 * 60 * 1000,
PING_SUBMISSION_THRESHOLD: 10,
HAS_MATCHING_REGION: "SearchTelemetry:HasMatchingRegion",
};
ChromeUtils.defineLazyGetter(lazy, "logConsole", () => {
return console.createInstance({
prefix: "SearchTelemetry",
maxLogLevel: lazy.SearchUtils.loggingEnabled ? "Debug" : "Warn",
});
});
const CATEGORIZATION_PREF =
"browser.search.serpEventTelemetryCategorization.enabled";
const CATEGORIZATION_REGION_PREF =
"browser.search.serpEventTelemetryCategorization.regionEnabled";
XPCOMUtils.defineLazyPreferenceGetter(
lazy,
"serpEventTelemetryCategorization",
CATEGORIZATION_PREF,
false,
(aPreference, previousValue, newValue) => {
if (newValue) {
SearchSERPCategorization.init();
} else {
SearchSERPCategorization.uninit({ deleteMap: true });
}
}
);
XPCOMUtils.defineLazyPreferenceGetter(
lazy,
"activityLimit",
"telemetry.fog.test.activity_limit",
120
);
export const SearchSERPTelemetryUtils = {
ACTIONS: {
CLICKED: "clicked",
// specific to cookie banner
CLICKED_ACCEPT: "clicked_accept",
CLICKED_REJECT: "clicked_reject",
CLICKED_MORE_OPTIONS: "clicked_more_options",
EXPANDED: "expanded",
SUBMITTED: "submitted",
},
COMPONENTS: {
AD_CAROUSEL: "ad_carousel",
AD_IMAGE_ROW: "ad_image_row",
AD_LINK: "ad_link",
AD_SIDEBAR: "ad_sidebar",
AD_SITELINK: "ad_sitelink",
AD_UNCATEGORIZED: "ad_uncategorized",
COOKIE_BANNER: "cookie_banner",
INCONTENT_SEARCHBOX: "incontent_searchbox",
NON_ADS_LINK: "non_ads_link",
REFINED_SEARCH_BUTTONS: "refined_search_buttons",
SHOPPING_TAB: "shopping_tab",
},
ABANDONMENTS: {
NAVIGATION: "navigation",
TAB_CLOSE: "tab_close",
WINDOW_CLOSE: "window_close",
},
INCONTENT_SOURCES: {
OPENED_IN_NEW_TAB: "opened_in_new_tab",
REFINE_ON_SERP: "follow_on_from_refine_on_SERP",
SEARCHBOX: "follow_on_from_refine_on_incontent_search",
},
CATEGORIZATION: {
INCONCLUSIVE: 0,
},
};
const AD_COMPONENTS = [
SearchSERPTelemetryUtils.COMPONENTS.AD_CAROUSEL,
SearchSERPTelemetryUtils.COMPONENTS.AD_IMAGE_ROW,
SearchSERPTelemetryUtils.COMPONENTS.AD_LINK,
SearchSERPTelemetryUtils.COMPONENTS.AD_SIDEBAR,
SearchSERPTelemetryUtils.COMPONENTS.AD_SITELINK,
SearchSERPTelemetryUtils.COMPONENTS.AD_UNCATEGORIZED,
];
/**
* TelemetryHandler is the main class handling Search Engine Result Page (SERP)
* telemetry. It primarily deals with tracking of what pages are loaded into tabs.
*
* It handles the *in-content:sap* keys of the SEARCH_COUNTS histogram.
*/
class TelemetryHandler {
// Whether or not this class is initialised.
_initialized = false;
// An instance of ContentHandler.
_contentHandler;
// The original provider information, mainly used for tests.
_originalProviderInfo = null;
// The current search provider info.
_searchProviderInfo = null;
// An instance of remote settings that is used to access the provider info.
_telemetrySettings;
// Callback used when syncing telemetry settings.
#telemetrySettingsSync;
// _browserInfoByURL is a map of tracked search urls to objects containing:
// * {object} info
// the search provider information associated with the url.
// * {WeakMap} browserTelemetryStateMap
// a weak map of browsers that have the url loaded, their ad report state,
// and their impression id.
// * {integer} count
// a manual count of browsers logged.
// We keep a weak map of browsers, in case we miss something on our counts
// and cause a memory leak - worst case our map is slightly bigger than it
// needs to be.
// The manual count is because WeakMap doesn't give us size/length
// information, but we want to know when we can clean up our associated
// entry.
_browserInfoByURL = new Map();
// Browser objects mapped to the info in _browserInfoByURL.
#browserToItemMap = new WeakMap();
// _browserSourceMap is a map of the latest search source for a particular
// browser - one of the KNOWN_SEARCH_SOURCES in BrowserSearchTelemetry.
_browserSourceMap = new WeakMap();
/**
* A WeakMap whose key is a browser with value of a source type found in
* INCONTENT_SOURCES. Kept separate to avoid overlapping with legacy
* search sources. These sources are specific to the content of a search
* provider page rather than something from within the browser itself.
*/
#browserContentSourceMap = new WeakMap();
/**
* Sets the source of a SERP visit from something that occured in content
* rather than from the browser.
*
* @param {browser} browser
* The browser object associated with the page that should be a SERP.
* @param {string} source
* The source that started the load. One of
* SearchSERPTelemetryUtils.COMPONENTS.INCONTENT_SEARCHBOX,
* SearchSERPTelemetryUtils.INCONTENT_SOURCES.OPENED_IN_NEW_TAB or
* SearchSERPTelemetryUtils.INCONTENT_SOURCES.REFINE_ON_SERP.
*/
setBrowserContentSource(browser, source) {
this.#browserContentSourceMap.set(browser, source);
}
// _browserNewtabSessionMap is a map of the newtab session id for particular
// browsers.
_browserNewtabSessionMap = new WeakMap();
constructor() {
this._contentHandler = new ContentHandler({
browserInfoByURL: this._browserInfoByURL,
findBrowserItemForURL: (...args) => this._findBrowserItemForURL(...args),
checkURLForSerpMatch: (...args) => this._checkURLForSerpMatch(...args),
findItemForBrowser: (...args) => this.findItemForBrowser(...args),
});
}
/**
* Initializes the TelemetryHandler and its ContentHandler. It will add
* appropriate listeners to the window so that window opening and closing
* can be tracked.
*/
async init() {
if (this._initialized) {
return;
}
this._telemetrySettings = lazy.RemoteSettings(TELEMETRY_SETTINGS_KEY);
let rawProviderInfo = [];
try {
rawProviderInfo = await this._telemetrySettings.get();
} catch (ex) {
lazy.logConsole.error("Could not get settings:", ex);
}
this.#telemetrySettingsSync = event => this.#onSettingsSync(event);
this._telemetrySettings.on("sync", this.#telemetrySettingsSync);
// Send the provider info to the child handler.
this._contentHandler.init(rawProviderInfo);
this._originalProviderInfo = rawProviderInfo;
// Now convert the regexps into
this._setSearchProviderInfo(rawProviderInfo);
for (let win of Services.wm.getEnumerator("navigator:browser")) {
this._registerWindow(win);
}
Services.wm.addListener(this);
this._initialized = true;
}
async #onSettingsSync(event) {
let current = event.data?.current;
if (current) {
lazy.logConsole.debug(
"Update provider info due to Remote Settings sync."
);
this._originalProviderInfo = current;
this._setSearchProviderInfo(current);
Services.ppmm.sharedData.set(
SEARCH_TELEMETRY_SHARED.PROVIDER_INFO,
current
);
Services.ppmm.sharedData.flush();
} else {
lazy.logConsole.debug(
"Ignoring Remote Settings sync data due to missing records."
);
}
Services.obs.notifyObservers(null, "search-telemetry-v2-synced");
}
/**
* Uninitializes the TelemetryHandler and its ContentHandler.
*/
uninit() {
if (!this._initialized) {
return;
}
this._contentHandler.uninit();
for (let win of Services.wm.getEnumerator("navigator:browser")) {
this._unregisterWindow(win);
}
Services.wm.removeListener(this);
try {
this._telemetrySettings.off("sync", this.#telemetrySettingsSync);
} catch (ex) {
lazy.logConsole.error(
"Failed to shutdown SearchSERPTelemetry Remote Settings.",
ex
);
}
this._telemetrySettings = null;
this.#telemetrySettingsSync = null;
this._initialized = false;
}
/**
* Records the search source for particular browsers, in case it needs
* to be associated with a SERP.
*
* @param {browser} browser
* The browser where the search originated.
* @param {string} source
* Where the search originated from.
*/
recordBrowserSource(browser, source) {
this._browserSourceMap.set(browser, source);
}
/**
* Records the newtab source for particular browsers, in case it needs
* to be associated with a SERP.
*
* @param {browser} browser
* The browser where the search originated.
* @param {string} newtabSessionId
* The sessionId of the newtab session the search originated from.
*/
recordBrowserNewtabSession(browser, newtabSessionId) {
this._browserNewtabSessionMap.set(browser, newtabSessionId);
}
/**
* Helper function for recording the reason for a Glean abandonment event.
*
* @param {string} impressionId
* The impression id for the abandonment event about to be recorded.
* @param {string} reason
* The reason the SERP is deemed abandoned.
* One of SearchSERPTelemetryUtils.ABANDONMENTS.
*/
recordAbandonmentTelemetry(impressionId, reason) {
impressionIdsWithoutEngagementsSet.delete(impressionId);
lazy.logConsole.debug(
`Recording an abandonment event for impression id ${impressionId} with reason: ${reason}`
);
Glean.serp.abandonment.record({
impression_id: impressionId,
reason,
});
}
/**
* Handles the TabClose event received from the listeners.
*
* @param {object} event
* The event object provided by the listener.
*/
handleEvent(event) {
if (event.type != "TabClose") {
console.error("Received unexpected event type", event.type);
return;
}
this._browserNewtabSessionMap.delete(event.target.linkedBrowser);
this.stopTrackingBrowser(
event.target.linkedBrowser,
SearchSERPTelemetryUtils.ABANDONMENTS.TAB_CLOSE
);
}
/**
* Test-only function, used to override the provider information, so that
* unit tests can set it to easy to test values.
*
* @param {Array} providerInfo
* See {@link
https://searchfox.org/mozilla-central/search?q=search-telemetry-v2-schema.json}
* for type information.
*/
overrideSearchTelemetryForTests(providerInfo) {
let info = providerInfo ? providerInfo : this._originalProviderInfo;
this._contentHandler.overrideSearchTelemetryForTests(info);
this._setSearchProviderInfo(info);
}
/**
* Used to set the local version of the search provider information.
* This automatically maps the regexps to RegExp objects so that
* we don't have to create a new instance each time.
*
* @param {Array} providerInfo
* A raw array of provider information to set.
*/
_setSearchProviderInfo(providerInfo) {
this._searchProviderInfo = providerInfo.map(provider => {
let newProvider = {
...provider,
searchPageRegexp: new RegExp(provider.searchPageRegexp),
};
if (provider.extraAdServersRegexps) {
newProvider.extraAdServersRegexps = provider.extraAdServersRegexps.map(
r => new RegExp(r)
);
}
newProvider.ignoreLinkRegexps = provider.ignoreLinkRegexps?.length
? provider.ignoreLinkRegexps.map(r => new RegExp(r))
: [];
newProvider.nonAdsLinkRegexps = provider.nonAdsLinkRegexps?.length
? provider.nonAdsLinkRegexps.map(r => new RegExp(r))
: [];
if (provider.shoppingTab?.regexp) {
newProvider.shoppingTab = {
selector: provider.shoppingTab.selector,
regexp: new RegExp(provider.shoppingTab.regexp),
};
}
newProvider.nonAdsLinkQueryParamNames =
provider.nonAdsLinkQueryParamNames ?? [];
return newProvider;
});
this._contentHandler._searchProviderInfo = this._searchProviderInfo;
}
reportPageAction(info, browser) {
this._contentHandler._reportPageAction(info, browser);
}
reportPageWithAds(info, browser) {
this._contentHandler._reportPageWithAds(info, browser);
}
reportPageWithAdImpressions(info, browser) {
this._contentHandler._reportPageWithAdImpressions(info, browser);
}
async reportPageDomains(info, browser) {
await this._contentHandler._reportPageDomains(info, browser);
}
reportPageImpression(info, browser) {
this._contentHandler._reportPageImpression(info, browser);
}
/**
* This may start tracking a tab based on the URL. If the URL matches a search
* partner, and it has a code, then we'll start tracking it. This will aid
* determining if it is a page we should be tracking for adverts.
*
* @param {object} browser
* The browser associated with the page.
* @param {string} url
* The url that was loaded in the browser.
* @param {nsIDocShell.LoadCommand} loadType
* The load type associated with the page load.
*/
updateTrackingStatus(browser, url, loadType) {
if (
!lazy.BrowserSearchTelemetry.shouldRecordSearchCount(
browser.getTabBrowser()
)
) {
return;
}
let info = this._checkURLForSerpMatch(url);
if (!info) {
this._browserNewtabSessionMap.delete(browser);
this.stopTrackingBrowser(browser);
return;
}
let source = "unknown";
if (loadType & Ci.nsIDocShell.LOAD_CMD_RELOAD) {
source = "reload";
} else if (loadType & Ci.nsIDocShell.LOAD_CMD_HISTORY) {
source = "tabhistory";
} else if (this._browserSourceMap.has(browser)) {
source = this._browserSourceMap.get(browser);
this._browserSourceMap.delete(browser);
}
let newtabSessionId;
if (this._browserNewtabSessionMap.has(browser)) {
newtabSessionId = this._browserNewtabSessionMap.get(browser);
// We leave the newtabSessionId in the map for this browser
// until we stop loading SERP pages or the tab is closed.
}
// Generate metadata for the SERP impression.
let { impressionId, impressionInfo } = this._generateImpressionInfo(
browser,
url,
info,
source
);
this._reportSerpPage(info, source, url);
// For single page apps, we store the page by its original URI so the
// network observers can recover the browser in a context when they only
// have access to the originURL.
let urlKey =
info.isSPA && browser.originalURI?.spec ? browser.originalURI.spec : url;
let item = this._browserInfoByURL.get(urlKey);
if (item) {
item.browserTelemetryStateMap.set(browser, {
adsReported: false,
adImpressionsReported: false,
impressionId,
urlToComponentMap: null,
impressionInfo,
searchBoxSubmitted: false,
categorizationInfo: null,
adsClicked: 0,
adsHidden: 0,
adsLoaded: 0,
adsVisible: 0,
searchQuery: info.searchQuery,
});
item.count++;
item.source = source;
item.newtabSessionId = newtabSessionId;
} else {
item = {
browserTelemetryStateMap: new WeakMap().set(browser, {
adsReported: false,
adImpressionsReported: false,
impressionId,
urlToComponentMap: null,
impressionInfo,
searchBoxSubmitted: false,
categorizationInfo: null,
adsClicked: 0,
adsHidden: 0,
adsLoaded: 0,
adsVisible: 0,
searchQuery: info.searchQuery,
}),
info,
count: 1,
source,
newtabSessionId,
majorVersion: parseInt(Services.appinfo.version),
channel: lazy.SearchUtils.MODIFIED_APP_CHANNEL,
region: lazy.Region.home,
isSPA: info.isSPA,
};
// For single page apps, we store the page by its original URI so that
// network observers can recover the browser in a context when they only
// have the originURL to work with.
this._browserInfoByURL.set(urlKey, item);
}
this.#browserToItemMap.set(browser, item);
}
/**
* Determines whether or not a browser should be untracked or tracked for
* SERPs who have single page app behaviour.
*
* The over-arching logic:
* 1. Only inspect the browser if the url matches a SERP that is a SPA.
* 2. Recording an engagement if we're tracking the browser and we're going
* to another page.
* 3. Untrack the browser if we're tracking it and switching pages.
* 4. Track the browser if we're now on a default search page.
*
* @param {BrowserElement} browser
* The browser element related to the request.
* @param {string} url
* The url of the request.
* @param {number} loadType
* The loadtype of a the request.
*/
async updateTrackingSinglePageApp(browser, url, loadType) {
let providerInfo = this._getProviderInfoForURL(url);
if (!providerInfo?.isSPA) {
return;
}
let item = this.findItemForBrowser(browser);
let telemetryState = item?.browserTelemetryStateMap.get(browser);
let previousSearchTerm = telemetryState?.searchQuery ?? "";
let searchTerm = this.urlSearchTerms(url, providerInfo);
let searchTermChanged = previousSearchTerm !== searchTerm;
let isSerp = !!this._checkURLForSerpMatch(url, providerInfo);
let browserIsTracked = !!telemetryState;
let isTabHistory = loadType & Ci.nsIDocShell.LOAD_CMD_HISTORY;
// Step 2: Maybe record engagement.
if (browserIsTracked && !isTabHistory && (searchTermChanged || !isSerp)) {
// If we've established we've changed to another SERP, the cause could be
// from a submission event inside the content process. The event is
// sent to the parent and stored as `telemetryState.searchBoxSubmitted`
// but if we check now, it may be too early. Instead, we check with the
// content process directly to see if it recorded a submit event.
let actor = browser.browsingContext.currentWindowGlobal.getActor(
"SearchSERPTelemetry"
);
let didSubmit = await actor.sendQuery("SearchSERPTelemetry:DidSubmit");
if (telemetryState && !telemetryState.searchBoxSubmitted && !didSubmit) {
impressionIdsWithoutEngagementsSet.delete(telemetryState.impressionId);
Glean.serp.engagement.record({
impression_id: telemetryState.impressionId,
action: SearchSERPTelemetryUtils.ACTIONS.CLICKED,
target: SearchSERPTelemetryUtils.COMPONENTS.NON_ADS_LINK,
});
lazy.logConsole.debug("Counting click:", {
impressionId: telemetryState.impressionId,
type: SearchSERPTelemetryUtils.COMPONENTS.NON_ADS_LINK,
URL: url,
});
}
}
// Step 3: Maybe untrack the browser.
if (browserIsTracked && (searchTermChanged || !isSerp)) {
let reason = "";
// If we have to untrack it, it might be due to the user using the
// back/forward button.
if (isTabHistory) {
reason = SearchSERPTelemetryUtils.ABANDONMENTS.NAVIGATION;
}
let actor = browser.browsingContext.currentWindowGlobal.getActor(
"SearchSERPTelemetry"
);
actor.sendAsyncMessage("SearchSERPTelemetry:StopTrackingDocument");
this.stopTrackingBrowser(browser, reason);
browserIsTracked = false;
}
// Step 4: Maybe track the browser.
if (isSerp && !browserIsTracked) {
this.updateTrackingStatus(browser, url, loadType);
let actor = browser.browsingContext.currentWindowGlobal.getActor(
"SearchSERPTelemetry"
);
actor.sendAsyncMessage("SearchSERPTelemetry:WaitForSPAPageLoad");
}
}
/**
* Stops tracking of a tab, for example the tab has loaded a different URL.
* Also records a Glean abandonment event if appropriate.
*
* @param {object} browser The browser associated with the tab to stop being
* tracked.
* @param {string} abandonmentReason
* An optional parameter that specifies why the browser is deemed abandoned.
* The reason will be recorded as part of Glean abandonment telemetry.
* One of SearchSERPTelemetryUtils.ABANDONMENTS.
*/
stopTrackingBrowser(browser, abandonmentReason) {
for (let [url, item] of this._browserInfoByURL) {
if (item.browserTelemetryStateMap.has(browser)) {
let telemetryState = item.browserTelemetryStateMap.get(browser);
let impressionId = telemetryState.impressionId;
if (impressionIdsWithoutEngagementsSet.has(impressionId)) {
this.recordAbandonmentTelemetry(impressionId, abandonmentReason);
}
if (
lazy.serpEventTelemetryCategorization &&
telemetryState.categorizationInfo
) {
SearchSERPCategorizationEventScheduler.sendCallback(browser);
}
item.browserTelemetryStateMap.delete(browser);
item.count--;
}
if (!item.count) {
this._browserInfoByURL.delete(url);
}
}
this.#browserToItemMap.delete(browser);
}
/**
* Calculate how close two urls are in equality.
*
* The scoring system:
* - If the URLs look exactly the same, including the ordering of query
* parameters, the score is Infinity.
* - If the origin is the same, the score is increased by 1. Otherwise the
* score is 0.
* - If the path is the same, the score is increased by 1.
* - For each query parameter, if the key exists the score is increased by 1.
* Likewise if the query parameter values match.
* - If the hash is the same, the score is increased by 1. This includes if
* the hash is missing in both URLs.
*
* @param {URL} url1
* Url to compare.
* @param {URL} url2
* Other url to compare. Ordering shouldn't matter.
* @param {object} [matchOptions]
* Options for checking equality.
* @param {boolean} [matchOptions.path]
* Whether the path must match. Default to false.
* @param {boolean} [matchOptions.paramValues]
* Whether the values of the query parameters must match if the query
* parameter key exists in the other. Defaults to false.
* @returns {number}
* A score of how closely the two URLs match. Returns 0 if there is no
* match or the equality check failed for an enabled match option.
*/
compareUrls(url1, url2, matchOptions = {}) {
// In case of an exact match, well, that's an obvious winner.
if (url1.href == url2.href) {
return Infinity;
}
// Each step we get closer to the two URLs being the same, we increase the
// score. The consumer of this method will use these scores to see which
// of the URLs is the best match.
let score = 0;
if (url1.origin == url2.origin) {
++score;
if (url1.pathname == url2.pathname) {
++score;
for (let [key1, value1] of url1.searchParams) {
// Let's not fuss about the ordering of search params, since the
// score effect will solve that.
if (url2.searchParams.has(key1)) {
++score;
if (url2.searchParams.get(key1) == value1) {
++score;
} else if (matchOptions.paramValues) {
return 0;
}
}
}
if (url1.hash == url2.hash) {
++score;
}
} else if (matchOptions.path) {
return 0;
}
}
return score;
}
/**
* Extracts the search terms from the URL based on the provider info.
*
* @param {string} url
* The URL to inspect.
* @param {object} providerInfo
* The providerInfo associated with the URL.
* @returns {string}
* The search term or if none is found, a blank string.
*/
urlSearchTerms(url, providerInfo) {
if (providerInfo?.queryParamNames?.length) {
let { searchParams } = new URL(url);
for (let queryParamName of providerInfo.queryParamNames) {
let value = searchParams.get(queryParamName);
if (value) {
return value;
}
}
}
return "";
}
findItemForBrowser(browser) {
return this.#browserToItemMap.get(browser);
}
/**
* Parts of the URL, like search params and hashes, may be mutated by scripts
* on a page we're tracking. Since we don't want to keep track of that
* ourselves in order to keep the list of browser objects a weak-referenced
* set, we do optional fuzzy matching of URLs to fetch the most relevant item
* that contains tracking information.
*
* @param {string} url URL to fetch the tracking data for.
* @returns {object} Map containing the following members:
* - {WeakMap} browsers
* Map of browser elements that belong to `url` and their ad report state.
* - {object} info
* Info dictionary as returned by `_checkURLForSerpMatch`.
* - {number} count
* The number of browser element we can most accurately tell we're
* tracking, since they're inside a WeakMap.
*/
_findBrowserItemForURL(url) {
try {
url = new URL(url);
} catch (ex) {
return null;
}
let item;
let currentBestMatch = 0;
for (let [trackingURL, candidateItem] of this._browserInfoByURL) {
if (currentBestMatch === Infinity) {
break;
}
try {
// Make sure to cache the parsed URL object, since there's no reason to
// do it twice.
trackingURL =
candidateItem._trackingURL ||
(candidateItem._trackingURL = new URL(trackingURL));
} catch (ex) {
continue;
}
let score = this.compareUrls(url, trackingURL);
if (score > currentBestMatch) {
item = candidateItem;
currentBestMatch = score;
}
}
return item;
}
// nsIWindowMediatorListener
/**
* This is called when a new window is opened, and handles registration of
* that window if it is a browser window.
*
* @param {nsIAppWindow} appWin The xul window that was opened.
*/
onOpenWindow(appWin) {
let win = appWin.docShell.domWindow;
win.addEventListener(
"load",
() => {
if (
win.document.documentElement.getAttribute("windowtype") !=
"navigator:browser"
) {
return;
}
this._registerWindow(win);
},
{ once: true }
);
}
/**
* Listener that is called when a window is closed, and handles deregistration of
* that window if it is a browser window.
*
* @param {nsIAppWindow} appWin The xul window that was closed.
*/
onCloseWindow(appWin) {
let win = appWin.docShell.domWindow;
if (
win.document.documentElement.getAttribute("windowtype") !=
"navigator:browser"
) {
return;
}
this._unregisterWindow(win);
}
/**
* Adds event listeners for the window and registers it with the content handler.
*
* @param {object} win The window to register.
*/
_registerWindow(win) {
win.gBrowser.tabContainer.addEventListener("TabClose", this);
}
/**
* Removes event listeners for the window and unregisters it with the content
* handler.
*
* @param {object} win The window to unregister.
*/
_unregisterWindow(win) {
for (let tab of win.gBrowser.tabs) {
this.stopTrackingBrowser(
tab.linkedBrowser,
SearchSERPTelemetryUtils.ABANDONMENTS.WINDOW_CLOSE
);
}
win.gBrowser.tabContainer.removeEventListener("TabClose", this);
}
/**
* Searches for provider information for a given url.
*
* @param {string} url The url to match for a provider.
* @returns {Array | null} Returns an array of provider name and the provider information.
*/
_getProviderInfoForURL(url) {
return this._searchProviderInfo.find(info =>
info.searchPageRegexp.test(url)
);
}
/**
* Checks to see if a url is a search partner location, and determines the
* provider and codes used.
*
* @param {string} url The url to match.
* @returns {null|object} Returns null if there is no match found. Otherwise,
* returns an object of strings for provider, code, type, whether it's a
* single page app, and the search query used.
*/
_checkURLForSerpMatch(url) {
let searchProviderInfo = this._getProviderInfoForURL(url);
if (!searchProviderInfo) {
return null;
}
let queries = new URLSearchParams(url.split("#")[0].split("?")[1]);
queries.forEach((v, k) => {
queries.set(k.toLowerCase(), v);
});
let isSPA = !!searchProviderInfo.isSPA;
if (isSPA) {
// A URL may have a specific query parameter denoting a search page.
// If the key was expected but doesn't currently exist, it could be due to
// the initial url containing it until after a page load.
// In that case, ignore this check since most SERPs missing the query
// param will go to the default search page.
let { key, value } = searchProviderInfo.defaultPageQueryParam;
if (key && queries.has(key) && queries.get(key) != value) {
return null;
}
}
// Some URLs can match provider info but also be the provider's homepage
// instead of a SERP.
// e.g.
https://example.com/ vs. https://example.com/?foo=bar
// Look for the presence of the query parameter that contains a search term.
let hasQuery = false;
let searchQuery = "";
for (let queryParamName of searchProviderInfo.queryParamNames) {
searchQuery = queries.get(queryParamName);
if (searchQuery) {
hasQuery = true;
break;
}
}
if (!hasQuery) {
return null;
}
// Default to organic to simplify things.
// We override type in the sap cases.
let type = "organic";
let code;
if (searchProviderInfo.codeParamName) {
code = queries.get(searchProviderInfo.codeParamName.toLowerCase());
if (code) {
// The code is only included if it matches one of the specific ones.
if (searchProviderInfo.taggedCodes.includes(code)) {
type = "tagged";
if (
searchProviderInfo.followOnParamNames &&
searchProviderInfo.followOnParamNames.some(p => queries.has(p))
) {
type += "-follow-on";
}
} else if (searchProviderInfo.organicCodes.includes(code)) {
type = "organic";
} else if (searchProviderInfo.expectedOrganicCodes?.includes(code)) {
code = "none";
} else {
code = "other";
}
} else if (searchProviderInfo.followOnCookies) {
// Especially Bing requires lots of extra work related to cookies.
for (let followOnCookie of searchProviderInfo.followOnCookies) {
if (followOnCookie.extraCodeParamName) {
let eCode = queries.get(
followOnCookie.extraCodeParamName.toLowerCase()
);
if (
!eCode ||
!followOnCookie.extraCodePrefixes.some(p => eCode.startsWith(p))
) {
continue;
}
}
// If this cookie is present, it's probably an SAP follow-on.
// This might be an organic follow-on in the same session, but there
// is no way to tell the difference.
for (let cookie of Services.cookies.getCookiesFromHost(
followOnCookie.host,
{}
)) {
if (cookie.name != followOnCookie.name) {
continue;
}
// Cookie values may take the form of "foo=bar&baz=1".
let [cookieParam, cookieValue] = cookie.value
.split("&")[0]
.split("=")
.map(p => p.trim());
if (
cookieParam == followOnCookie.codeParamName &&
searchProviderInfo.taggedCodes.includes(cookieValue)
) {
type = "tagged-follow-on";
code = cookieValue;
break;
}
}
}
}
}
return {
provider: searchProviderInfo.telemetryId,
type,
code,
searchQuery,
isSPA,
};
}
/**
* Logs telemetry for a search provider visit.
*
* @param {object} info The search provider information.
* @param {string} info.provider The name of the provider.
* @param {string} info.type The type of search.
* @param {string} [info.code] The code for the provider.
* @param {string} source Where the search originated from.
* @param {string} url The url that was matched (for debug logging only).
*/
_reportSerpPage(info, source, url) {
let payload = `${info.provider}:${info.type}:${info.code || "none"}`;
let name = source.replace(/_([a-z])/g, (m, p) => p.toUpperCase());
Glean.browserSearchContent[name][payload].add(1);
lazy.logConsole.debug("Impression:", payload, url);
}
/**
* @typedef {object} ImpressionInfo
* @property {string} provider The name of the provider for the impression.
* @property {boolean} tagged Whether the search has partner tags.
* @property {string} source The search access point.
* @property {boolean} isShoppingPage Whether the page is shopping.
* @property {boolean} isPrivate Whether the SERP is in a private tab.
* @property {boolean} isSignedIn Whether the user is signed on to the SERP.
*/
/**
* @typedef {object} ImpressionInfoResult
* @property {string | null} impressionId The unique id of the impression.
* @property {ImpressionInfo | null} impressionInfo General impresison info.
*/
/**
* If applicable for a tracked SERP provider, generates a unique id and
* caches information that shouldn't be changed during the lifetime of the
* impression.
*
* @param {browser} browser
* The browser associated with the SERP.
* @param {string} url
* The URL of the SERP.
* @param {object} info
* General information about the tracked SERP.
* @param {string} source
* The originator of the SERP load.
* @returns {ImpressionInfoResult} The result when attempting to generate
* impression info.
*/
_generateImpressionInfo(browser, url, info, source) {
let searchProviderInfo = this._getProviderInfoForURL(url);
let data = {
impressionId: null,
impressionInfo: null,
};
if (!searchProviderInfo?.components?.length) {
return data;
}
// The UUID generated by Services.uuid contains leading and trailing braces.
// Need to trim them first.
data.impressionId = Services.uuid.generateUUID().toString().slice(1, -1);
impressionIdsWithoutEngagementsSet.add(data.impressionId);
// If it's a SERP but doesn't have a browser source, the source might be
// from something that happened in content.
if (this.#browserContentSourceMap.has(browser)) {
source = this.#browserContentSourceMap.get(browser);
this.#browserContentSourceMap.delete(browser);
}
let partnerCode = "";
if (info.code != "none" && info.code != null) {
partnerCode = info.code;
}
let isShoppingPage = false;
if (searchProviderInfo.shoppingTab?.regexp) {
isShoppingPage = searchProviderInfo.shoppingTab.regexp.test(url);
}
let isPrivate =
browser.contentPrincipal.originAttributes.privateBrowsingId > 0;
let isSignedIn = false;
// Signed-in status should not be recorded when the client is in a private
// window.
if (!isPrivate && searchProviderInfo.signedInCookies) {
isSignedIn = searchProviderInfo.signedInCookies.some(cookieObj => {
return Services.cookies
.getCookiesFromHost(
cookieObj.host,
browser.contentPrincipal.originAttributes
)
.some(c => c.name == cookieObj.name);
});
}
data.impressionInfo = {
provider: info.provider,
tagged: info.type.startsWith("tagged"),
partnerCode,
source,
isShoppingPage,
isPrivate,
isSignedIn,
};
return data;
}
}
/**
* ContentHandler deals with handling telemetry of the content within a tab -
* when ads detected and when they are selected.
*/
class ContentHandler {
/**
* Constructor.
*
* @param {object} options
* The options for the handler.
* @param {Map} options.browserInfoByURL
* The map of urls from TelemetryHandler.
* @param {Function} options.getProviderInfoForURL
* A function that obtains the provider information for a url.
*/
constructor(options) {
this._browserInfoByURL = options.browserInfoByURL;
this._findBrowserItemForURL = options.findBrowserItemForURL;
this._checkURLForSerpMatch = options.checkURLForSerpMatch;
this._findItemForBrowser = options.findItemForBrowser;
}
/**
* Initializes the content handler. This will also set up the shared data that is
* shared with the SearchTelemetryChild actor.
*
* @param {Array} providerInfo
* The provider information for the search telemetry to record.
*/
init(providerInfo) {
Services.ppmm.sharedData.set(
SEARCH_TELEMETRY_SHARED.PROVIDER_INFO,
providerInfo
);
Services.ppmm.sharedData.set(
SEARCH_TELEMETRY_SHARED.LOAD_TIMEOUT,
ADLINK_CHECK_TIMEOUT_MS
);
Services.ppmm.sharedData.set(
SEARCH_TELEMETRY_SHARED.SPA_LOAD_TIMEOUT,
SPA_ADLINK_CHECK_TIMEOUT_MS
);
Services.obs.addObserver(this, "http-on-examine-response");
Services.obs.addObserver(this, "http-on-examine-cached-response");
}
/**
* Uninitializes the content handler.
*/
uninit() {
Services.obs.removeObserver(this, "http-on-examine-response");
Services.obs.removeObserver(this, "http-on-examine-cached-response");
}
/**
* Test-only function to override the search provider information for use
* with tests. Passes it to the SearchTelemetryChild actor.
*
* @param {object} providerInfo @see SEARCH_PROVIDER_INFO for type information.
*/
overrideSearchTelemetryForTests(providerInfo) {
Services.ppmm.sharedData.set("SearchTelemetry:ProviderInfo", providerInfo);
}
observe(aSubject, aTopic) {
switch (aTopic) {
case "http-on-examine-response":
case "http-on-examine-cached-response":
this.observeActivity(aSubject);
break;
}
}
/**
* Listener that observes network activity, so that we can determine if a link
* from a search provider page was followed, and if then if that link was an
* ad click or not.
*
* @param {nsIChannel} channel The channel that generated the activity.
*/
observeActivity(channel) {
if (!(channel instanceof Ci.nsIChannel)) {
return;
}
let wrappedChannel = ChannelWrapper.get(channel);
// The channel we're observing might be a redirect of a channel we've
// observed before.
if (wrappedChannel._adClickRecorded) {
lazy.logConsole.debug("Ad click already recorded");
return;
}
Services.tm.dispatchToMainThread(() => {
// We suspect that No Content (204) responses are used to transfer or
// update beacons. They used to lead to double-counting ad-clicks, so let's
// ignore them.
if (wrappedChannel.statusCode == 204) {
lazy.logConsole.debug("Ignoring activity from ambiguous responses");
return;
}
// The wrapper is consistent across redirects, so we can use it to track state.
let originURL = wrappedChannel.originURI && wrappedChannel.originURI.spec;
let item = this._findBrowserItemForURL(originURL);
if (!originURL || !item) {
return;
}
let url = wrappedChannel.finalURL;
let providerInfo = item.info.provider;
let info = this._searchProviderInfo.find(provider => {
return provider.telemetryId == providerInfo;
});
// If an error occurs with Glean SERP telemetry logic, avoid
// disrupting legacy telemetry.
try {
this.#maybeRecordSERPTelemetry(wrappedChannel, item, info);
} catch (ex) {
lazy.logConsole.error(ex);
}
if (!info.extraAdServersRegexps?.some(regex => regex.test(url))) {
return;
}
try {
let name = item.source.replace(/_([a-z])/g, (m, p) => p.toUpperCase());
Glean.browserSearchAdclicks[name][
`${info.telemetryId}:${item.info.type}`
].add(1);
wrappedChannel._adClickRecorded = true;
if (item.newtabSessionId) {
Glean.newtabSearchAd.click.record({
newtab_visit_id: item.newtabSessionId,
search_access_point: item.source,
is_follow_on: item.info.type.endsWith("follow-on"),
is_tagged: item.info.type.startsWith("tagged"),
telemetry_id: item.info.provider,
});
}
lazy.logConsole.debug("Counting ad click in page for:", {
source: item.source,
originURL,
URL: url,
});
} catch (e) {
console.error(e);
}
});
}
/**
* Checks if a request should record an ad click if it can be traced to a
* browser containing an observed SERP.
*
* @param {ChannelWrapper} wrappedChannel
* The wrapped channel.
* @param {object} item
* The browser item associated with the origin URL of the request.
* @param {object} info
* The search provider info associated with the item.
*/
#maybeRecordSERPTelemetry(wrappedChannel, item, info) {
if (wrappedChannel._recordedClick) {
lazy.logConsole.debug("Click already recorded.");
return;
}
let originURL = wrappedChannel.originURI?.spec;
let url = wrappedChannel.finalURL;
if (info.ignoreLinkRegexps.some(r => r.test(url))) {
lazy.logConsole.debug("Ignore url.");
return;
}
// Some channels re-direct by loading pages that return 200. The result
// is the channel will have an originURL that changes from the SERP to
// either a nonAdsRegexp or an extraAdServersRegexps. This is typical
// for loading a page in a new tab. The channel will have changed so any
// properties attached to them to record state (e.g. _recordedClick)
// won't be present.
if (
info.nonAdsLinkRegexps.some(r => r.test(originURL)) ||
info.extraAdServersRegexps.some(r => r.test(originURL))
) {
lazy.logConsole.debug("Expecting redirect.");
return;
}
// A click event is recorded if a user loads a resource from an
// originURL that is a SERP.
//
// Typically, we only want top level loads containing documents to avoid
// recording any event on an in-page resource a SERP might load
// (e.g. CSS files).
//
// The exception to this is if a subframe loads a resource that matches
// a non ad link. Some SERPs encode non ad search results with a URL
// that gets loaded into an iframe, which then tells the container of
// the iframe to change the location of the page.
if (
wrappedChannel.channel.isDocument &&
(wrappedChannel.channel.loadInfo.isTopLevelLoad ||
info.nonAdsLinkRegexps.some(r => r.test(url)))
) {
let browser = wrappedChannel.browserElement;
// If the load is from history, don't record an event.
if (
browser?.browsingContext.webProgress?.loadType &
Ci.nsIDocShell.LOAD_CMD_HISTORY
) {
lazy.logConsole.debug("Ignoring load from history");
return;
}
// Step 1: Check if the browser associated with the request was a
// tracked SERP.
let start = Cu.now();
let telemetryState;
let isFromNewtab = false;
if (item.browserTelemetryStateMap.has(browser)) {
// If the map contains the browser, then it means that the request is
// the SERP is going from one page to another. We know this because
// previous conditions prevent non-top level loads from occuring here.
telemetryState = item.browserTelemetryStateMap.get(browser);
} else if (browser) {
// Alternatively, it could be the case that the request is occuring in
// a new tab but was triggered by one of the browsers in the state map.
// If only one browser exists in the state map, it must be that one.
if (item.count === 1) {
let sourceBrowsers = ChromeUtils.nondeterministicGetWeakMapKeys(
item.browserTelemetryStateMap
);
if (sourceBrowsers?.length) {
telemetryState = item.browserTelemetryStateMap.get(
sourceBrowsers[0]
);
}
} else if (item.count > 1) {
// If the count is more than 1, then multiple open SERPs contain the
// same search term, so try to find the specific browser that opened
// the request.
let tabBrowser = browser.getTabBrowser();
let tab = tabBrowser.getTabForBrowser(browser).openerTab;
// A tab will not always have an openerTab, as first tabs in new
// windows don't have an openerTab.
// Bug 1867582: We should also handle the case where multiple tabs
// contain the same search term.
if (tab) {
telemetryState = item.browserTelemetryStateMap.get(
tab.linkedBrowser
);
}
}
if (telemetryState) {
isFromNewtab = true;
}
}
lazy.logConsole.debug("Telemetry state:", telemetryState);
// Step 2: If we have telemetryState, the browser object must be
// associated with another browser that is tracked. Try to find the
// component type on the SERP responsible for the request.
// Exceptions:
// - If a searchbox was used to initiate the load, don't record another
// engagement because the event was logged elsewhere.
// - If the ad impression hasn't been recorded yet, we have no way of
// knowing precisely what kind of component was selected.
let isSerp = false;
if (
telemetryState &&
telemetryState.adImpressionsReported &&
!telemetryState.searchBoxSubmitted
) {
if (info.searchPageRegexp?.test(originURL)) {
isSerp = true;
}
let startFindComponent = Cu.now();
let parsedUrl = new URL(url);
// Organic links may contain query param values mapped to links shown
// on the SERP at page load. If a stored component depends on that
// value, we need to be able to recover it or else we'll always consider
// it a non_ads_link.
if (
info.nonAdsLinkQueryParamNames.length &&
info.nonAdsLinkRegexps.some(r => r.test(url))
) {
let newParsedUrl;
for (let key of info.nonAdsLinkQueryParamNames) {
let paramValue = parsedUrl.searchParams.get(key);
if (paramValue) {
try {
newParsedUrl = /^https?:\/\//.test(paramValue)
? new URL(paramValue)
: new URL(paramValue, parsedUrl.origin);
break;
} catch (e) {}
}
}
parsedUrl = newParsedUrl ?? parsedUrl;
}
// Determine the component type of the link.
let type;
for (let [
storedUrl,
componentType,
] of telemetryState.urlToComponentMap.entries()) {
// The URL we're navigating to may have more query parameters if
// the provider adds query parameters when the user clicks on a link.
// On the other hand, the URL we are navigating to may have have
// fewer query parameters because of query param stripping.
// Thus, if a query parameter is missing, a match can still be made
// provided keys that exist in both URLs contain equal values.
let score = SearchSERPTelemetry.compareUrls(storedUrl, parsedUrl, {
paramValues: true,
path: true,
});
if (score) {
type = componentType;
break;
}
}
ChromeUtils.addProfilerMarker(
"SearchSERPTelemetry._observeActivity",
startFindComponent,
"Find component for URL"
);
// If no component was found, it's possible the link was added after
// components were categorized.
if (!type) {
let isAd = info.extraAdServersRegexps?.some(regex => regex.test(url));
type = isAd
? SearchSERPTelemetryUtils.COMPONENTS.AD_UNCATEGORIZED
: SearchSERPTelemetryUtils.COMPONENTS.NON_ADS_LINK;
}
if (
type == SearchSERPTelemetryUtils.COMPONENTS.REFINED_SEARCH_BUTTONS
) {
SearchSERPTelemetry.setBrowserContentSource(
browser,
SearchSERPTelemetryUtils.INCONTENT_SOURCES.REFINE_ON_SERP
);
} else if (isSerp && isFromNewtab) {
SearchSERPTelemetry.setBrowserContentSource(
browser,
SearchSERPTelemetryUtils.INCONTENT_SOURCES.OPENED_IN_NEW_TAB
);
}
// Step 3: Record the engagement.
impressionIdsWithoutEngagementsSet.delete(telemetryState.impressionId);
if (AD_COMPONENTS.includes(type)) {
telemetryState.adsClicked += 1;
}
Glean.serp.engagement.record({
impression_id: telemetryState.impressionId,
action: SearchSERPTelemetryUtils.ACTIONS.CLICKED,
target: type,
});
lazy.logConsole.debug("Counting click:", {
impressionId: telemetryState.impressionId,
type,
URL: url,
});
// Prevent re-directed channels from being examined more than once.
wrappedChannel._recordedClick = true;
}
ChromeUtils.addProfilerMarker(
"SearchSERPTelemetry._observeActivity",
start,
"Maybe record user engagement."
);
}
}
/**
* Logs telemetry for a page with adverts, if it is one of the partner search
* provider pages that we're tracking.
*
* @param {object} info
* The search provider information for the page.
* @param {boolean} info.hasAds
* Whether or not the page has adverts.
* @param {string} info.url
* The url of the page.
* @param {object} browser
* The browser associated with the page.
*/
_reportPageWithAds(info, browser) {
let item = this._findItemForBrowser(browser);
if (!item) {
lazy.logConsole.warn(
"Expected to report URI for",
info.url,
"with ads but couldn't find the information"
);
return;
}
let telemetryState = item.browserTelemetryStateMap.get(browser);
if (telemetryState.adsReported) {
lazy.logConsole.debug(
"Ad was previously reported for browser with URI",
info.url
);
return;
}
lazy.logConsole.debug(
"Counting ads in page for",
item.info.provider,
item.info.type,
item.source,
info.url
);
let name = item.source.replace(/_([a-z])/g, (m, p) => p.toUpperCase());
Glean.browserSearchWithads[name][
`${item.info.provider}:${item.info.type}`
].add(1);
Services.obs.notifyObservers(null, "reported-page-with-ads");
telemetryState.adsReported = true;
if (item.newtabSessionId) {
Glean.newtabSearchAd.impression.record({
newtab_visit_id: item.newtabSessionId,
search_access_point: item.source,
is_follow_on: item.info.type.endsWith("follow-on"),
is_tagged: item.info.type.startsWith("tagged"),
telemetry_id: item.info.provider,
});
}
}
/**
* Logs ad impression telemetry for a page with adverts, if it is
* one of the partner search provider pages that we're tracking.
*
* @param {object} info
* The search provider information for the page.
* @param {string} info.url
* The url of the page.
* @param {Map<string, object>} info.adImpressions
* A map of ad impressions found for the page, where the key
* is the type of ad component and the value is an object
* containing the number of ads that were loaded, visible,
* and hidden.
* @param {Map<string, string>} info.hrefToComponentMap
* A map of hrefs to their component type. Contains both ads
* and non-ads.
* @param {object} browser
* The browser associated with the page.
*/
_reportPageWithAdImpressions(info, browser) {
let item = this._findItemForBrowser(browser);
if (!item) {
return;
}
let telemetryState = item.browserTelemetryStateMap.get(browser);
if (
info.adImpressions &&
telemetryState &&
!telemetryState.adImpressionsReported
) {
for (let [componentType, data] of info.adImpressions.entries()) {
// Not all ad impressions are sponsored.
if (AD_COMPONENTS.includes(componentType)) {
telemetryState.adsHidden += data.adsHidden;
telemetryState.adsLoaded += data.adsLoaded;
telemetryState.adsVisible += data.adsVisible;
}
lazy.logConsole.debug("Counting ad:", { type: componentType, ...data });
Glean.serp.adImpression.record({
impression_id: telemetryState.impressionId,
component: componentType,
ads_loaded: data.adsLoaded,
ads_visible: data.adsVisible,
ads_hidden: data.adsHidden,
});
}
// Convert hrefToComponentMap to a urlToComponentMap in order to cache
// the query parameters of the href.
let urlToComponentMap = new Map();
for (let [href, adType] of info.hrefToComponentMap) {
urlToComponentMap.set(new URL(href), adType);
}
telemetryState.urlToComponentMap = urlToComponentMap;
telemetryState.adImpressionsReported = true;
Services.obs.notifyObservers(null, "reported-page-with-ad-impressions");
}
}
/**
* Records a page action from a SERP page. Normally, actions are tracked in
* parent process by observing network events but some actions are not
* possible to detect outside of subscribing to the child process.
*
* @param {object} info
* The search provider infomation for the page.
* @param {string} info.target
* The target component that was interacted with.
* @param {string} info.action
* The action taken on the page.
* @param {object} browser
* The browser associated with the page.
*/
_reportPageAction(info, browser) {
let item = this._findItemForBrowser(browser);
if (!item) {
return;
}
let telemetryState = item.browserTelemetryStateMap.get(browser);
let impressionId = telemetryState?.impressionId;
if (info.target && impressionId) {
lazy.logConsole.debug(`Recorded page action:`, {
impressionId: telemetryState.impressionId,
target: info.target,
action: info.action,
});
Glean.serp.engagement.record({
impression_id: impressionId,
action: info.action,
target: info.target,
});
impressionIdsWithoutEngagementsSet.delete(impressionId);
// In-content searches are not be categorized with a type, so they will
// not be picked up in the network processes.
if (
info.target ==
SearchSERPTelemetryUtils.COMPONENTS.INCONTENT_SEARCHBOX &&
info.action == SearchSERPTelemetryUtils.ACTIONS.SUBMITTED
) {
telemetryState.searchBoxSubmitted = true;
SearchSERPTelemetry.setBrowserContentSource(
browser,
SearchSERPTelemetryUtils.INCONTENT_SOURCES.SEARCHBOX
);
}
Services.obs.notifyObservers(null, "reported-page-with-action");
} else {
lazy.logConsole.warn(
"Expected to report a",
info.action,
"engagement for",
info.url,
"but couldn't find an impression id."
);
}
}
_reportPageImpression(info, browser) {
let item = this._findItemForBrowser(browser);
let telemetryState = item.browserTelemetryStateMap.get(browser);
if (!telemetryState?.impressionInfo) {
lazy.logConsole.debug(
"Could not find telemetry state or impression info."
);
return;
}
let impressionId = telemetryState.impressionId;
if (impressionId) {
let impressionInfo = telemetryState.impressionInfo;
Glean.serp.impression.record({
impression_id: impressionId,
provider: impressionInfo.provider,
tagged: impressionInfo.tagged,
partner_code: impressionInfo.partnerCode,
source: impressionInfo.source,
shopping_tab_displayed: info.shoppingTabDisplayed,
is_shopping_page: impressionInfo.isShoppingPage,
is_private: impressionInfo.isPrivate,
is_signed_in: impressionInfo.isSignedIn,
});
lazy.logConsole.debug(`Reported Impression:`, {
impressionId,
...impressionInfo,
shoppingTabDisplayed: info.shoppingTabDisplayed,
});
Services.obs.notifyObservers(null, "reported-page-with-impression");
} else {
lazy.logConsole.debug("Could not find an impression id.");
}
}
/**
* Initiates the categorization and reporting of domains extracted from
* SERPs.
*
* @param {object} info
* The search provider infomation for the page.
* @param {Set} info.nonAdDomains
The non-ad domains extracted from the page.
* @param {Set} info.adDomains
The ad domains extracted from the page.
* @param {object} browser
* The browser associated with the page.
*/
async _reportPageDomains(info, browser) {
let item = this._findItemForBrowser(browser);
let telemetryState = item?.browserTelemetryStateMap.get(browser);
if (lazy.serpEventTelemetryCategorization && telemetryState) {
lazy.logConsole.debug("Ad domains:", Array.from(info.adDomains));
lazy.logConsole.debug("Non ad domains:", Array.from(info.nonAdDomains));
let result = await SearchSERPCategorization.maybeCategorizeSERP(
info.nonAdDomains,
info.adDomains,
item.info.provider
);
if (result) {
telemetryState.categorizationInfo = result;
let callback = () => {
let impressionInfo = telemetryState.impressionInfo;
SERPCategorizationRecorder.recordCategorizationTelemetry({
...telemetryState.categorizationInfo,
app_version: item.majorVersion,
channel: item.channel,
region: item.region,
partner_code: impressionInfo.partnerCode,
provider: impressionInfo.provider,
tagged: impressionInfo.tagged,
is_shopping_page: impressionInfo.isShoppingPage,
num_ads_clicked: telemetryState.adsClicked,
num_ads_hidden: telemetryState.adsHidden,
num_ads_loaded: telemetryState.adsLoaded,
num_ads_visible: telemetryState.adsVisible,
});
};
SearchSERPCategorizationEventScheduler.addCallback(browser, callback);
}
}
Services.obs.notifyObservers(
null,
"reported-page-with-categorized-domains"
);
}
}
/**
* @typedef {object} CategorizationResult
* @property {string} organic_category
* The category for the organic result.
* @property {number} organic_num_domains
* The number of domains examined to determine the organic category result.
* @property {number} organic_num_inconclusive
* The number of inconclusive domains when determining the organic result.
* @property {number} organic_num_unknown
* The number of unknown domains when determining the organic result.
* @property {string} sponsored_category
* The category for the organic result.
* @property {number} sponsored_num_domains
* The number of domains examined to determine the sponsored category.
* @property {number} sponsored_num_inconclusive
* The number of inconclusive domains when determining the sponsored category.
* @property {number} sponsored_num_unknown
* The category for the sponsored result.
* @property {string} mappings_version
* The category mapping version used to determine the categories.
*/
/**
* @typedef {object} CategorizationExtraParams
* @property {number} num_ads_clicked
* The total number of ads clicked on a SERP.
* @property {number} num_ads_hidden
* The total number of ads hidden from the user when categorization occured.
* @property {number} num_ads_loaded
* The total number of ads loaded when categorization occured.
* @property {number} num_ads_visible
* The total number of ads visible to the user when categorization occured.
*/
/* eslint-disable jsdoc/valid-types */
/**
* @typedef {CategorizationResult & CategorizationExtraParams} RecordCategorizatio
nParameters
*/
/* eslint-enable jsdoc/valid-types */
/**
* Categorizes SERPs.
*/
class SERPCategorizer {
async init() {
if (lazy.serpEventTelemetryCategorization) {
lazy.logConsole.debug("Initialize SERP categorizer.");
await SearchSERPDomainToCategoriesMap.init();
SearchSERPCategorizationEventScheduler.init();
SERPCategorizationRecorder.init();
}
}
async uninit({ deleteMap = false } = {}) {
lazy.logConsole.debug("Uninit SERP categorizer.");
await SearchSERPDomainToCategoriesMap.uninit(deleteMap);
SearchSERPCategorizationEventScheduler.uninit();
SERPCategorizationRecorder.uninit();
}
/**
* Categorizes domains extracted from SERPs. Note that we don't process
* domains if the domain-to-categories map is empty (if the client couldn't
* download Remote Settings attachments, for example).
*
* @param {Set} nonAdDomains
* Domains from organic results extracted from the page.
* @param {Set} adDomains
* Domains from ad results extracted from the page.
* @returns {CategorizationResult | null}
* The final categorization result. Returns null if the map was empty.
*/
async maybeCategorizeSERP(nonAdDomains, adDomains) {
// Per DS, if the map was empty (e.g. because of a technical issue
// downloading the data), we shouldn't report telemetry.
// Thus, there is no point attempting to categorize the SERP.
if (SearchSERPDomainToCategoriesMap.empty) {
SERPCategorizationRecorder.recordMissingImpressionTelemetry();
return null;
}
let resultsToReport = {};
let results = await this.applyCategorizationLogic(nonAdDomains);
resultsToReport.organic_category = results.category;
resultsToReport.organic_num_domains = results.num_domains;
resultsToReport.organic_num_unknown = results.num_unknown;
resultsToReport.organic_num_inconclusive = results.num_inconclusive;
results = await this.applyCategorizationLogic(adDomains);
resultsToReport.sponsored_category = results.category;
resultsToReport.sponsored_num_domains = results.num_domains;
resultsToReport.sponsored_num_unknown = results.num_unknown;
resultsToReport.sponsored_num_inconclusive = results.num_inconclusive;
resultsToReport.mappings_version = SearchSERPDomainToCategoriesMap.version;
return resultsToReport;
}
/**
* Applies the logic for reducing extracted domains to a single category for
* the SERP.
*
* @param {Set} domains
* The domains extracted from the page.
* @returns {object} resultsToReport
* The final categorization results. Keys are: "category", "num_domains",
* "num_unknown" and "num_inconclusive".
*/
async applyCategorizationLogic(domains) {
let domainInfo = {};
let domainsCount = 0;
let unknownsCount = 0;
let inconclusivesCount = 0;
for (let domain of domains) {
domainsCount++;
let categoryCandidates =
await SearchSERPDomainToCategoriesMap.get(domain);
if (!categoryCandidates.length) {
unknownsCount++;
continue;
}
// Inconclusive domains do not have more than one category candidate.
if (
categoryCandidates[0].category ==
SearchSERPTelemetryUtils.CATEGORIZATION.INCONCLUSIVE
) {
inconclusivesCount++;
continue;
}
domainInfo[domain] = categoryCandidates;
}
let finalCategory;
let topCategories = [];
// Determine if all domains were unknown or inconclusive.
if (unknownsCount + inconclusivesCount == domainsCount) {
finalCategory = SearchSERPTelemetryUtils.CATEGORIZATION.INCONCLUSIVE;
} else {
let maxScore = CATEGORIZATION_SETTINGS.MINIMUM_SCORE;
let rank = CATEGORIZATION_SETTINGS.STARTING_RANK;
for (let categoryCandidates of Object.values(domainInfo)) {
for (let { category, score } of categoryCandidates) {
let adjustedScore = score / Math.log2(rank);
if (adjustedScore > maxScore) {
maxScore = adjustedScore;
topCategories = [category];
} else if (adjustedScore == maxScore) {
topCategories.push(Number(category));
}
rank++;
}
}
finalCategory =
topCategories.length > 1
? this.#chooseRandomlyFrom(topCategories)
: topCategories[0];
}
return {
category: finalCategory,
num_domains: domainsCount,
num_unknown: unknownsCount,
num_inconclusive: inconclusivesCount,
};
}
#chooseRandomlyFrom(categories) {
let randIdx = Math.floor(Math.random() * categories.length);
return categories[randIdx];
}
}
/**
* Contains outstanding categorizations of browser objects that have yet to be
* scheduled to be reported into a Glean event.
* They are kept here until one of the conditions are met:
* 1. The browser that was tracked is no longer being tracked.
* 2. A user has been idle for IDLE_TIMEOUT_SECONDS
* 3. The user has awoken their computer and the time elapsed from the last
* categorization event exceeds WAKE_TIMEOUT_MS.
*/
class CategorizationEventScheduler {
/**
* A WeakMap containing browser objects mapped to a callback.
*
* @type {WeakMap | null}
*/
#browserToCallbackMap = null;
/**
* An instance of user idle service. Cached for testing purposes.
*
* @type {nsIUserIdleService | null}
*/
#idleService = null;
/**
* Whether it has been initialized.
*
* @type {boolean}
*/
#init = false;
/**
* The last Date.now() of a callback insertion.
*
* @type {number | null}
*/
#mostRecentMs = null;
init() {
if (this.#init) {
return;
}
lazy.logConsole.debug("Initializing categorization event scheduler.");
this.#browserToCallbackMap = new WeakMap();
// In tests, we simulate idleness as it is more reliable and easier than
// trying to replicate idleness. The way to do is so it by creating
// an mock idle service and having the component subscribe to it. If we
// used a lazy instantiation of idle service, the test could only ever be
// subscribed to the real one.
this.#idleService = Cc["@mozilla.org/widget/useridleservice;1"].getService(
Ci.nsIUserIdleService
);
this.#idleService.addIdleObserver(
this,
CATEGORIZATION_SETTINGS.IDLE_TIMEOUT_SECONDS
);
Services.obs.addObserver(this, "quit-application");
Services.obs.addObserver(this, "wake_notification");
this.#init = true;
}
uninit() {
if (!this.#init) {
return;
}
this.#browserToCallbackMap = null;
lazy.logConsole.debug("Un-initializing categorization event scheduler.");
this.#idleService.removeIdleObserver(
this,
CATEGORIZATION_SETTINGS.IDLE_TIMEOUT_SECONDS
);
Services.obs.removeObserver(this, "quit-application");
Services.obs.removeObserver(this, "wake_notification");
this.#idleService = null;
this.#init = false;
}
observe(subject, topic) {
switch (topic) {
case "idle":
lazy.logConsole.debug("Triggering all callbacks due to idle.");
this.#sendAllCallbacks();
break;
case "quit-application":
this.uninit();
break;
case "wake_notification":
if (
this.#mostRecentMs &&
Date.now() - this.#mostRecentMs >=
CATEGORIZATION_SETTINGS.WAKE_TIMEOUT_MS
) {
lazy.logConsole.debug(
"Triggering all callbacks due to a wake notification."
);
this.#sendAllCallbacks();
}
break;
}
}
addCallback(browser, callback) {
lazy.logConsole.debug("Adding callback to queue.");
this.#mostRecentMs = Date.now();
this.#browserToCallbackMap?.set(browser, callback);
}
sendCallback(browser) {
let callback = this.#browserToCallbackMap?.get(browser);
if (callback) {
lazy.logConsole.debug("Triggering callback.");
callback();
Services.obs.notifyObservers(
null,
"recorded-single-categorization-event"
);
this.#browserToCallbackMap.delete(browser);
}
}
#sendAllCallbacks() {
let browsers = ChromeUtils.nondeterministicGetWeakMapKeys(
this.#browserToCallbackMap
);
if (browsers) {
lazy.logConsole.debug("Triggering all callbacks.");
for (let browser of browsers) {
this.sendCallback(browser);
}
}
this.#mostRecentMs = null;
Services.obs.notifyObservers(null, "recorded-all-categorization-events");
}
}
/**
* Handles reporting SERP categorization telemetry to Glean.
*/
class CategorizationRecorder {
#init = false;
// The number of SERP categorizations that have been recorded but not yet
// reported in a Glean ping.
#serpCategorizationsCount = 0;
// When the user started interacting with the SERP.
#userInteractionStartTime = null;
async init() {
if (this.#init) {
return;
}
Services.obs.addObserver(this, "user-interaction-active");
Services.obs.addObserver(this, "user-interaction-inactive");
this.#init = true;
this.#serpCategorizationsCount = Services.prefs.getIntPref(
"browser.search.serpMetricsRecordedCounter",
0
);
Services.prefs.setIntPref("browser.search.serpMetricsRecordedCounter", 0);
this.submitPing("startup");
Services.obs.notifyObservers(null, "categorization-recorder-init");
}
uninit() {
if (this.#init) {
Services.obs.removeObserver(this, "user-interaction-active");
Services.obs.removeObserver(this, "user-interaction-inactive");
Services.prefs.setIntPref(
"browser.search.serpMetricsRecordedCounter",
this.#serpCategorizationsCount
);
this.#resetCategorizationRecorderData();
this.#init = false;
}
}
observe(subject, topic, _data) {
switch (topic) {
case "user-interaction-active": {
// If the user is already active, we don't want to overwrite the start
// time.
if (this.#userInteractionStartTime == null) {
this.#userInteractionStartTime = Date.now();
}
break;
}
case "user-interaction-inactive": {
let currentTime = Date.now();
let activityLimitInMs = lazy.activityLimit * 1000;
if (
this.#userInteractionStartTime &&
currentTime - this.#userInteractionStartTime >= activityLimitInMs
) {
this.submitPing("inactivity");
}
this.#userInteractionStartTime = null;
break;
}
}
}
/**
* Helper function for recording the SERP categorization event.
*
* @param {RecordCategorizationParameters} resultToReport
* The object containing all the data required to report.
*/
recordCategorizationTelemetry(resultToReport) {
lazy.logConsole.debug(
"Reporting the following categorization result:",
resultToReport
);
Glean.serp.categorization.record(resultToReport);
this.#incrementCategorizationsCount();
}
/**
* Helper function for recording Glean telemetry when issues with the
* domain-to-categories map cause the categorization and impression not to be
* recorded.
*/
recordMissingImpressionTelemetry() {
lazy.logConsole.debug(
"Recording a missing impression due to an issue with the domain-to-categories map."
);
Glean.serp.categorizationNoMapFound.add();
this.#incrementCategorizationsCount();
}
/**
* Adds a Glean object metric to the custom SERP categorization ping if info
* about a single experiment has been requested via Nimbus config.
*/
maybeExtractAndRecordExperimentInfo() {
let targetExperiment =
lazy.NimbusFeatures.search.getVariable("targetExperiment");
if (!targetExperiment) {
lazy.logConsole.debug("No targetExperiment found.");
return;
}
lazy.logConsole.debug("Found targetExperiment:", targetExperiment);
// Try checking if an Experiment exists, otherwise check for a Rollout.
let metadata =
lazy.ExperimentAPI.getExperimentMetaData({
featureId: "search",
slug: targetExperiment,
}) ??
lazy.ExperimentAPI.getRolloutMetaData({
featureId: "search",
slug: targetExperiment,
});
if (!metadata) {
lazy.logConsole.debug(
"No experiment or rollout found that matches targetExperiment."
);
return;
}
let experimentToRecord = {
slug: metadata.slug,
branch: metadata.branch?.slug,
};
lazy.logConsole.debug("Experiment data:", experimentToRecord);
Glean.serp.experimentInfo.set(experimentToRecord);
}
submitPing(reason) {
if (!this.#serpCategorizationsCount) {
return;
}
// If experiment info has been requested via Nimbus config, we want to
// record it just before submitting the ping.
this.maybeExtractAndRecordExperimentInfo();
lazy.logConsole.debug("Submitting SERP categorization ping:", reason);
GleanPings.serpCategorization.submit(reason);
this.#serpCategorizationsCount = 0;
}
/**
* Tests are able to clear telemetry on demand. When that happens, we need to
* ensure we're doing to the same here or else the internal count in tests
* will be inaccurate.
*/
testReset() {
if (Cu.isInAutomation) {
this.#resetCategorizationRecorderData();
}
}
#incrementCategorizationsCount() {
this.#serpCategorizationsCount++;
if (
this.#serpCategorizationsCount >=
CATEGORIZATION_SETTINGS.PING_SUBMISSION_THRESHOLD
) {
this.submitPing("threshold_reached");
}
}
#resetCategorizationRecorderData() {
this.#serpCategorizationsCount = 0;
this.#userInteractionStartTime = null;
}
}
/**
* @typedef {object} DomainToCategoriesRecord
* @property {boolean} isDefault
* Whether the record is a default if the user's region does not contain a
* more specific set of mappings.
* @property {Array<string>} includeRegions
* The region codes to include. If left blank, it applies to all regions.
* @property {Array<string>} excludeRegions
* The region codes to exclude.
* @property {number} version
* The version of the record.
*/
/**
* @typedef {object} DomainCategoryScore
* @property {number} category
* The index of the category.
* @property {number} score
* The score associated with the category.
*/
/**
* Maps domain to categories. Data is downloaded from Remote Settings and
* stored inside DomainToCategoriesStore.
*/
class DomainToCategoriesMap {
/**
* Latest version number of the attachments.
*
* @type {number | null}
*/
#version = null;
/**
* The Remote Settings client.
*
* @type {object | null}
*/
#client = null;
/**
* Whether this is synced with Remote Settings.
*
* @type {boolean}
*/
#init = false;
/**
* Callback when Remote Settings syncs.
*
* @type {Function | null}
*/
#onSettingsSync = null;
/**
* When downloading an attachment from Remote Settings fails, this will
* contain a timer which will eventually attempt to retry downloading
* attachments.
*/
#downloadTimer = null;
/**
* Number of times this has attempted to try another download. Will reset
* if the categorization preference has been toggled, or a sync event has
* been detected.
*
* @type {number}
*/
#downloadRetries = 0;
/**
* A reference to the data store.
*
* @type {DomainToCategoriesStore | null}
*/
#store = null;
/**
* Runs at application startup with startup idle tasks. If the SERP
* categorization preference is enabled, it creates a Remote Settings
* client to listen to updates, and populates the store.
*/
async init() {
if (this.#init) {
return;
}
lazy.logConsole.debug("Initializing domain-to-categories map.");
// Set early to allow un-init from an initialization.
this.#init = true;
try {
await this.#setupClientAndStore();
} catch (ex) {
lazy.logConsole.error(ex);
await this.uninit();
return;
}
// If we don't have a client and store, it likely means an un-init process
// started during the initialization process.
if (this.#client && this.#store) {
lazy.logConsole.debug("Initialized domain-to-categories map.");
Services.obs.notifyObservers(null, "domain-to-categories-map-init");
}
}
async uninit(shouldDeleteStore) {
if (this.#init) {
lazy.logConsole.debug("Un-initializing domain-to-categories map.");
this.#clearClient();
this.#cancelAndNullifyTimer();
if (this.#store) {
if (shouldDeleteStore) {
try {
await this.#store.dropData();
} catch (ex) {
lazy.logConsole.error(ex);
}
}
await this.#store.uninit();
this.#store = null;
}
lazy.logConsole.debug("Un-initialized domain-to-categories map.");
this.#init = false;
Services.obs.notifyObservers(null, "domain-to-categories-map-uninit");
}
}
/**
* Given a domain, find categories and relevant scores.
*
* @param {string} domain Domain to lookup.
* @returns {Array<DomainCategoryScore>}
* An array containing categories and their respective score. If no record
* for the domain is available, return an empty array.
*/
async get(domain) {
if (!this.#store || this.#store.empty || !this.#store.ready) {
return [];
}
lazy.gCryptoHash.init(lazy.gCryptoHash.SHA256);
let bytes = new TextEncoder().encode(domain);
lazy.gCryptoHash.update(bytes, domain.length);
let hash = lazy.gCryptoHash.finish(true);
let rawValues = await this.#store.getCategories(hash);
if (rawValues?.length) {
let output = [];
// Transform data into a more readable format.
// [x, y] => { category: x, score: y }
for (let i = 0; i < rawValues.length; i += 2) {
output.push({ category: rawValues[i], score: rawValues[i + 1] });
}
return output;
}
return [];
}
/**
* If the map was initialized, returns the version number for the data.
* The version number is determined by the record with the highest version
* number. Even if the records have different versions, only records from the
* latest version should be available. Returns null if the map was not
* initialized.
*
* @returns {null | number} The version number.
*/
get version() {
return this.#version;
}
/**
* Whether the store is empty of data.
*
* @returns {boolean}
*/
get empty() {
if (!this.#store) {
return true;
}
return this.#store.empty;
}
/**
* Unit test-only function, used to override the domainToCategoriesMap so
* that tests can set it to easy to test values.
*
* @param {object} domainToCategoriesMap
* An object where the key is a hashed domain and the value is an array
* containing an arbitrary number of DomainCategoryScores.
* @param {number} version
* The version number for the store.
* @param {boolean} isDefault
* Whether the records should be considered default.
*/
async overrideMapForTests(
domainToCategoriesMap,
version = 1,
isDefault = false
) {
if (Cu.isInAutomation || Services.env.exists("XPCSHELL_TEST_PROFILE_DIR")) {
await this.#store.init();
await this.#store.dropData();
await this.#store.insertObject(domainToCategoriesMap, version, isDefault);
}
}
/**
* Given a list of records from Remote Settings, determine which ones should
* be matched based on the region.
*
* - If a set of records match the region, they should be derived from one
* source JSON file. The reason why it is split up is to make it less
* onerous to download and parse, though testing might find a single
* file to be sufficient.
* - If more than one set of records match the region, it would be from one
* set of records belonging to default mappings that apply to many regions.
* The more specific collection should override the default set.
*
* @param {Array<DomainToCategoriesRecord>} records
* The records from Remote Settings.
* @param {string|null} region
* The region to match.
* @returns {object|null}
*/
findRecordsForRegion(records, region) {
if (!region || !records?.length) {
return null;
}
let regionSpecificRecords = [];
let defaultRecords = [];
for (let record of records) {
if (this.recordMatchesRegion(record, region)) {
if (record.isDefault) {
defaultRecords.push(record);
} else {
regionSpecificRecords.push(record);
}
}
}
if (regionSpecificRecords.length) {
return { records: regionSpecificRecords, isDefault: false };
}
if (defaultRecords.length) {
return { records: defaultRecords, isDefault: true };
}
return null;
}
/**
* Checks the record matches the region.
*
* @param {DomainToCategoriesRecord} record
* The record to check.
* @param {string|null} region
* The region the record to be matched against.
* @returns {boolean}
*/
recordMatchesRegion(record, region) {
if (!region || !record) {
return false;
}
if (record.excludeRegions?.includes(region)) {
return false;
}
if (record.isDefault) {
return true;
}
if (!record.includeRegions?.includes(region)) {
return false;
}
return true;
}
async syncMayModifyStore(syncData, region) {
if (!syncData || !region) {
return false;
}
let currentResult = this.findRecordsForRegion(syncData?.current, region);
if (this.#store.empty && !currentResult) {
lazy.logConsole.debug("Store was empty and there were no results.");
return false;
}
if (!this.#store.empty && !currentResult) {
return true;
}
let storeHasDefault = await this.#store.isDefault();
if (storeHasDefault != currentResult.isDefault) {
return true;
}
const recordsDifferFromStore = records => {
let result = this.findRecordsForRegion(records, region);
return result?.records.length && storeHasDefault == result.isDefault;
};
if (
recordsDifferFromStore(syncData.created) ||
recordsDifferFromStore(syncData.deleted) ||
recordsDifferFromStore(syncData.updated.map(obj => obj.new))
) {
return true;
}
return false;
}
/**
* Connect with Remote Settings and retrieve the records associated with
* categorization. Then, check if the records match the store version. If
* no records exist, return early. If records exist but the version stored
* on the records differ from the store version, then attempt to
* empty the store and fill it with data from downloaded attachments. Only
* reuse the store if the version in each record matches the store.
*/
async #setupClientAndStore() {
if (this.#client && !this.empty) {
return;
}
lazy.logConsole.debug("Setting up domain-to-categories map.");
this.#client = lazy.RemoteSettings(TELEMETRY_CATEGORIZATION_KEY);
this.#onSettingsSync = event => this.#sync(event.data);
this.#client.on("sync", this.#onSettingsSync);
this.#store = new DomainToCategoriesStore();
await this.#store.init();
let records = await this.#client.get();
// Even though records don't exist, we still consider the store initialized
// since a sync event from Remote Settings could populate the store with
// records eligible for the client to download.
if (!records.length) {
lazy.logConsole.debug("No records found for domain-to-categories map.");
return;
}
// At least one of the records must be eligible for the region.
let result = this.findRecordsForRegion(records, lazy.Region.home);
let matchingRecords = result?.records;
let matchingRecordsAreDefault = result?.isDefault;
let hasMatchingRecords = !!matchingRecords?.length;
Services.prefs.setBoolPref(CATEGORIZATION_REGION_PREF, hasMatchingRecords);
if (!hasMatchingRecords) {
lazy.logConsole.debug(
"No domain-to-category records match the current region:",
lazy.Region.home
);
// If no matching record was found but the store is not empty,
// the user changed their home region.
if (!this.#store.empty) {
lazy.logConsole.debug(
"Drop store because it no longer matches the home region."
);
await this.#store.dropData();
}
return;
}
this.#version = this.#retrieveLatestVersion(matchingRecords);
let storeVersion = await this.#store.getVersion();
let storeIsDefault = await this.#store.isDefault();
if (
storeVersion == this.#version &&
!this.#store.empty &&
storeIsDefault == matchingRecordsAreDefault
) {
lazy.logConsole.debug("Reuse existing domain-to-categories map.");
Services.obs.notifyObservers(
null,
"domain-to-categories-map-update-complete"
);
return;
}
await this.#clearAndPopulateStore(records);
}
#clearClient() {
if (this.#client) {
lazy.logConsole.debug("Removing Remote Settings client.");
this.#client.off("sync", this.#onSettingsSync);
this.#client = null;
this.#onSettingsSync = null;
this.#downloadRetries = 0;
}
}
/**
* Inspects a list of records from the categorization domain bucket and finds
* the maximum version score from the set of records. Each record should have
* the same version number but if for any reason one entry has a lower
* version number, the latest version can be used to filter it out.
*
* @param {Array<DomainToCategoriesRecord>} records
* An array containing the records from a Remote Settings collection.
* @returns {number}
*/
#retrieveLatestVersion(records) {
return records.reduce((version, record) => {
if (record.version > version) {
return record.version;
}
return version;
}, 0);
}
/**
* Callback when Remote Settings has indicated the collection has been
* synced. Determine if the records changed should result in updating the map,
* as some of the records changed might not affect the user's region.
* Additionally, delete any attachment for records that no longer exist.
*
* @param {object} data
* Object containing records that are current, deleted, created, or updated.
*/
async #sync(data) {
lazy.logConsole.debug("Syncing domain-to-categories with Remote Settings.");
// Remove local files of deleted records.
let toDelete = data?.deleted.filter(d => d.attachment);
await Promise.all(
toDelete.map(record => this.#client.attachments.deleteDownloaded(record))
);
let couldModify = await this.syncMayModifyStore(data, lazy.Region.home);
if (!couldModify) {
lazy.logConsole.debug(
"Domain-to-category records had no changes that matched the region."
);
return;
}
this.#downloadRetries = 0;
try {
await this.#clearAndPopulateStore(data?.current);
} catch (ex) {
lazy.logConsole.error("Error populating map: ", ex);
await this.uninit();
}
}
/**
* Clear the existing store and populate it with attachments found in the
* records. If no attachments are found, or no record containing an
* attachment contained the latest version, then nothing will change.
*
* @param {Array<DomainToCategoriesRecord>} records
* The records containing attachments.
* @throws {Error}
* Will throw if it was not able to drop the store data, or it was unable
* to insert data into the store.
*/
async #clearAndPopulateStore(records) {
// If we don't have a handle to a store, it would mean that it was removed
// during an uninitialization process.
if (!this.#store) {
lazy.logConsole.debug(
"Could not populate store because no store was available."
);
return;
}
if (!this.#store.ready) {
lazy.logConsole.debug(
"Could not populate store because it was not ready."
);
return;
}
// Empty table so that if there are errors in the download process, callers
// querying the map won't use information we know is probably outdated.
await this.#store.dropData();
this.#version = null;
this.#cancelAndNullifyTimer();
let result = this.findRecordsForRegion(records, lazy.Region.home);
let recordsMatchingRegion = result?.records;
let isDefault = result?.isDefault;
let hasMatchingRecords = !!recordsMatchingRegion?.length;
Services.prefs.setBoolPref(CATEGORIZATION_REGION_PREF, hasMatchingRecords);
// A collection with no records is still a valid init state.
if (!records?.length) {
lazy.logConsole.debug("No records found for domain-to-categories map.");
return;
}
if (!hasMatchingRecords) {
lazy.logConsole.debug(
"No domain-to-category records match the current region:",
lazy.Region.home
);
return;
}
let fileContents = [];
let start = Cu.now();
for (let record of recordsMatchingRegion) {
let fetchedAttachment;
// Downloading attachments can fail.
try {
fetchedAttachment = await this.#client.attachments.download(record);
} catch (ex) {
lazy.logConsole.error("Could not download file:", ex);
this.#createTimerToPopulateMap();
return;
}
fileContents.push(fetchedAttachment.buffer);
}
ChromeUtils.addProfilerMarker(
"SearchSERPTelemetry.#clearAndPopulateStore",
start,
"Download attachments."
);
this.#version = this.#retrieveLatestVersion(recordsMatchingRegion);
if (!this.#version) {
lazy.logConsole.debug("Could not find a version number for any record.");
return;
}
await this.#store.insertFileContents(
fileContents,
this.#version,
isDefault
);
lazy.logConsole.debug("Finished updating domain-to-categories store.");
Services.obs.notifyObservers(
null,
"domain-to-categories-map-update-complete"
);
}
#cancelAndNullifyTimer() {
if (this.#downloadTimer) {
lazy.logConsole.debug("Cancel and nullify download timer.");
this.#downloadTimer.cancel();
this.#downloadTimer = null;
}
}
#createTimerToPopulateMap() {
if (
this.#downloadRetries >=
TELEMETRY_CATEGORIZATION_DOWNLOAD_SETTINGS.maxTriesPerSession ||
!this.#client
) {
return;
}
if (!this.#downloadTimer) {
this.#downloadTimer = Cc["@mozilla.org/timer;1"].createInstance(
Ci.nsITimer
);
}
lazy.logConsole.debug("Create timer to retry downloading attachments.");
let delay =
TELEMETRY_CATEGORIZATION_DOWNLOAD_SETTINGS.base +
randomInteger(
TELEMETRY_CATEGORIZATION_DOWNLOAD_SETTINGS.minAdjust,
TELEMETRY_CATEGORIZATION_DOWNLOAD_SETTINGS.maxAdjust
);
this.#downloadTimer.initWithCallback(
async () => {
this.#downloadRetries += 1;
let records = await this.#client.get();
try {
await this.#clearAndPopulateStore(records);
} catch (ex) {
lazy.logConsole.error("Error populating store: ", ex);
await this.uninit();
}
},
delay,
Ci.nsITimer.TYPE_ONE_SHOT
);
}
}
/**
* Handles the storage of data containing domains to categories.
*/
export class DomainToCategoriesStore {
#init = false;
/**
* The connection to the store.
*
* @type {object | null}
*/
#connection = null;
/**
* Reference for the shutdown blocker in case we need to remove it before
* shutdown.
*
* @type {Function | null}
*/
#asyncShutdownBlocker = null;
/**
* Whether the store is empty of data.
*
* @type {boolean}
*/
#empty = true;
/**
* For a particular subset of errors, we'll attempt to rebuild the database
* from scratch.
*/
#rebuildableErrors = ["NS_ERROR_FILE_CORRUPTED"];
/**
* Initializes the store. If the store is initialized it should have cached
* a connection to the store and ensured the store exists.
*/
async init() {
if (this.#init) {
return;
}
lazy.logConsole.debug("Initializing domain-to-categories store.");
// Attempts to cache a connection to the store.
// If a failure occured, try to re-build the store.
let rebuiltStore = false;
try {
await this.#initConnection();
} catch (ex1) {
lazy.logConsole.error(`Error initializing a connection: ${ex1}`);
if (this.#rebuildableErrors.includes(ex1.name)) {
try {
await this.#rebuildStore();
} catch (ex2) {
await this.#closeConnection();
lazy.logConsole.error(`Could not rebuild store: ${ex2}`);
return;
}
rebuiltStore = true;
}
}
// If we don't have a connection, bail because the browser could be
// shutting down ASAP, or re-creating the store is impossible.
if (!this.#connection) {
lazy.logConsole.debug(
"Bailing from DomainToCategoriesStore.init because connection doesn't exist."
);
return;
}
// If we weren't forced to re-build the store, we only have the connection.
// We want to ensure the store exists so calls to public methods can pass
// without throwing errors due to the absence of the store.
if (!rebuiltStore) {
try {
await this.#initSchema();
} catch (ex) {
lazy.logConsole.error(`Error trying to create store: ${ex}`);
await this.#closeConnection();
return;
}
}
lazy.logConsole.debug("Initialized domain-to-categories store.");
this.#init = true;
}
async uninit() {
if (this.#init) {
lazy.logConsole.debug("Un-initializing domain-to-categories store.");
await this.#closeConnection();
this.#asyncShutdownBlocker = null;
lazy.logConsole.debug("Un-initialized domain-to-categories store.");
}
}
/**
* Whether the store has an open connection to the physical store.
*
* @returns {boolean}
*/
get ready() {
return this.#init;
}
/**
* Whether the store is devoid of data.
*
* @returns {boolean}
*/
get empty() {
return this.#empty;
}
/**
* Clears information in the store. If dropping data encountered a failure,
* try to delete the file containing the store and re-create it.
*
* @throws {Error} Will throw if it was unable to clear information from the
* store.
*/
async dropData() {
if (!this.#connection) {
return;
}
let tableExists = await this.#connection.tableExists(
CATEGORIZATION_SETTINGS.STORE_NAME
);
if (tableExists) {
lazy.logConsole.debug("Drop domain_to_categories.");
// This can fail if the permissions of the store are read-only.
await this.#connection.executeTransaction(async () => {
await this.#connection.execute(`DROP TABLE domain_to_categories`);
const createDomainToCategoriesTable = `
CREATE TABLE IF NOT EXISTS
domain_to_categories (
string_id
TEXT PRIMARY KEY NOT NULL,
categories
TEXT
);
`;
await this.#connection.execute(createDomainToCategoriesTable);
await this.#connection.execute(`DELETE FROM moz_meta`);
await this.#connection.executeCached(
`
INSERT INTO
moz_meta (key, value)
VALUES
(:key, :value)
ON CONFLICT DO UPDATE SET
value = :value
`,
{ key: "version", value: 0 }
);
});
this.#empty = true;
}
}
/**
* Given file contents, try moving them into the store. If a failure occurs,
* it will attempt to drop existing data to ensure callers aren't accessing
* a partially filled store.
*
* @param {Array<ArrayBuffer>} fileContents
* Contents to convert.
* @param {number} version
* The version for the store.
* @param {boolean} isDefault
* Whether the file contents are from a default collection.
* @throws {Error}
* Will throw if the insertion failed and dropData was unable to run
* successfully.
*/
async insertFileContents(fileContents, version, isDefault = false) {
if (!this.#init || !fileContents?.length || !version) {
return;
}
try {
await this.#insert(fileContents, version, isDefault);
} catch (ex) {
lazy.logConsole.error(`Could not insert file contents: ${ex}`);
await this.dropData();
}
}
/**
* Convenience function to make it trivial to insert Javascript objects into
* the store. This avoids having to set up the collection in Remote Settings.
*
* @param {object} domainToCategoriesMap
* An object whose keys should be hashed domains with values containing
* an array of integers.
* @param {number} version
* The version for the store.
* @param {boolean} isDefault
* Whether the mappings are from a default record.
* @returns {boolean}
* Whether the operation was successful.
*/
async insertObject(domainToCategoriesMap, version, isDefault) {
if (!Cu.isInAutomation || !this.#init) {
return false;
}
let buffer = new TextEncoder().encode(
JSON.stringify(domainToCategoriesMap)
).buffer;
await this.insertFileContents([buffer], version, isDefault);
return true;
}
/**
* Retrieves domains mapped to the key.
*
* @param {string} key
* The value to lookup in the store.
* @returns {Array<number>}
* An array of numbers corresponding to the category and score. If the key
* does not exist in the store or the store is having issues retrieving the
* value, returns an empty array.
*/
async getCategories(key) {
if (!this.#init) {
return [];
}
let rows;
try {
rows = await this.#connection.executeCached(
`
SELECT
categories
FROM
domain_to_categories
WHERE
string_id = :key
`,
{
key,
}
);
} catch (ex) {
lazy.logConsole.error(`Could not retrieve from the store: ${ex}`);
return [];
}
if (!rows.length) {
return [];
}
return JSON.parse(rows[0].getResultByName("categories")) ?? [];
}
/**
* Retrieves the version number of the store.
*
* @returns {number}
* The version number. Returns 0 if the version was never set or if there
* was an issue accessing the version number.
*/
async getVersion() {
if (this.#connection) {
let rows;
try {
rows = await this.#connection.executeCached(
`
SELECT
value
FROM
moz_meta
WHERE
key = "version"
`
);
} catch (ex) {
lazy.logConsole.error(`Could not retrieve version of the store: ${ex}`);
return 0;
}
if (rows.length) {
return parseInt(rows[0].getResultByName("value")) ?? 0;
}
}
return 0;
}
/**
* Whether the data inside the store was derived from a default set of
* records.
*
* @returns {boolean}
*/
async isDefault() {
if (this.#connection) {
let rows;
try {
rows = await this.#connection.executeCached(
`
SELECT
value
FROM
moz_meta
WHERE
key = "is_default"
`
);
} catch (ex) {
lazy.logConsole.error(
`Could not retrieve if the store is using default records: ${ex}`
);
return false;
}
if (rows.length && parseInt(rows[0].getResultByName("value")) == 1) {
return true;
}
}
return false;
}
/**
* Test only function allowing tests to delete the store.
*/
async testDelete() {
if (Cu.isInAutomation) {
await this.#closeConnection();
await this.#delete();
}
}
/**
* If a connection is available, close it and remove shutdown blockers.
*/
async #closeConnection() {
this.#init = false;
this.#empty = true;
if (this.#asyncShutdownBlocker) {
lazy.Sqlite.shutdown.removeBlocker(this.#asyncShutdownBlocker);
this.#asyncShutdownBlocker = null;
}
if (this.#connection) {
lazy.logConsole.debug("Closing connection.");
// An error could occur while closing the connection. We suppress the
// error since it is not a critical part of the browser.
try {
await this.#connection.close();
} catch (ex) {
lazy.logConsole.error(ex);
}
this.#connection = null;
}
}
/**
* Initialize the schema for the store.
*
* @throws {Error}
* Will throw if a permissions error prevents creating the store.
*/
async #initSchema() {
if (!this.#connection) {
return;
}
lazy.logConsole.debug("Create store.");
// Creation can fail if the store is read only.
await this.#connection.executeTransaction(async () => {
// Let outer try block handle the exception.
const createDomainToCategoriesTable = `
CREATE TABLE IF NOT EXISTS
domain_to_categories (
string_id
TEXT PRIMARY KEY NOT NULL,
categories
TEXT
) WITHOUT ROWID;
`;
await this.#connection.execute(createDomainToCategoriesTable);
const createMetaTable = `
CREATE TABLE IF NOT EXISTS
moz_meta (
key
TEXT PRIMARY KEY NOT NULL,
value
INTEGER
) WITHOUT ROWID;
`;
await this.#connection.execute(createMetaTable);
await this.#connection.setSchemaVersion(
CATEGORIZATION_SETTINGS.STORE_SCHEMA
);
});
let rows = await this.#connection.executeCached(
"SELECT count(*) = 0 FROM domain_to_categories"
);
this.#empty = !!rows[0].getResultByIndex(0);
}
/**
* Attempt to delete the store.
*
* @throws {Error}
* Will throw if the permissions for the file prevent its deletion.
*/
async #delete() {
lazy.logConsole.debug("Attempt to delete the store.");
try {
await IOUtils.remove(
PathUtils.join(
PathUtils.profileDir,
CATEGORIZATION_SETTINGS.STORE_FILE
),
{ ignoreAbsent: true }
);
} catch (ex) {
lazy.logConsole.error(ex);
}
this.#empty = true;
lazy.logConsole.debug("Store was deleted.");
}
/**
* Tries to establish a connection to the store.
*
* @throws {Error}
* Will throw if there was an issue establishing a connection or adding
* adding a shutdown blocker.
*/
async #initConnection() {
if (this.#connection) {
return;
}
// This could fail if the store is corrupted.
this.#connection = await lazy.Sqlite.openConnection({
path: PathUtils.join(
PathUtils.profileDir,
CATEGORIZATION_SETTINGS.STORE_FILE
),
});
await this.#connection.execute("PRAGMA journal_mode = TRUNCATE");
this.#asyncShutdownBlocker = async () => {
await this.#connection.close();
this.#connection = null;
};
// This could fail if we're adding it during shutdown. In this case,
// don't throw but close the connection.
try {
lazy.Sqlite.shutdown.addBlocker(
"SearchSERPTelemetry:DomainToCategoriesSqlite closing",
this.#asyncShutdownBlocker
);
} catch (ex) {
lazy.logConsole.error(ex);
await this.#closeConnection();
}
}
/**
* Inserts into the store.
*
* @param {Array<ArrayBuffer>} fileContents
* The data that should be converted and inserted into the store.
* @param {number} version
* The version number that should be inserted into the store.
* @param {boolean} isDefault
* Whether the file contents are a default set of records.
* @throws {Error}
* Will throw if a connection is not present, if the store is not
* able to be updated (permissions error, corrupted file), or there is
* something wrong with the file contents.
*/
async #insert(fileContents, version, isDefault) {
let start = Cu.now();
await this.#connection.executeTransaction(async () => {
lazy.logConsole.debug("Insert into domain_to_categories table.");
for (let fileContent of fileContents) {
await this.#connection.executeCached(
`
INSERT INTO
domain_to_categories (string_id, categories)
SELECT
json_each.key AS string_id,
json_each.value AS categories
FROM
json_each(json(:obj))
`,
{
obj: new TextDecoder().decode(fileContent),
}
);
}
// Once the insertions have successfully completed, update the version.
await this.#connection.executeCached(
`
INSERT INTO
moz_meta (key, value)
VALUES
(:key, :value)
ON CONFLICT DO UPDATE SET
value = :value
`,
{ key: "version", value: version }
);
if (isDefault) {
await this.#connection.executeCached(
`
INSERT INTO
moz_meta (key, value)
VALUES
(:key, :value)
ON CONFLICT DO UPDATE SET
value = :value
`,
{ key: "is_default", value: 1 }
);
}
});
ChromeUtils.addProfilerMarker(
"DomainToCategoriesSqlite.#insert",
start,
"Move file contents into table."
);
if (fileContents?.length) {
this.#empty = false;
}
}
/**
* Deletes and re-build's the store. Used in cases where we encounter a
* failure and we want to try fixing the error by starting with an
* entirely fresh store.
*
* @throws {Error}
* Will throw if a connection could not be established, if it was
* unable to delete the store, or it was unable to build a new store.
*/
async #rebuildStore() {
lazy.logConsole.debug("Try rebuilding store.");
// Step 1. Close all connections.
await this.#closeConnection();
// Step 2. Delete the existing store.
await this.#delete();
// Step 3. Re-establish the connection.
await this.#initConnection();
// Step 4. If a connection exists, try creating the store.
await this.#initSchema();
}
}
function randomInteger(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
export var SearchSERPDomainToCategoriesMap = new DomainToCategoriesMap();
export var SearchSERPTelemetry = new TelemetryHandler();
export var SearchSERPCategorization = new SERPCategorizer();
export var SERPCategorizationRecorder = new CategorizationRecorder();
export var SearchSERPCategorizationEventScheduler =
new CategorizationEventScheduler();
