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amp-ad-network-doubleclick-impl.js
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amp-ad-network-doubleclick-impl.js
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/**
* Copyright 2016 The AMP HTML Authors. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS-IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Because AdSense and DoubleClick are both operated by Google and their A4A
// implementations share some behavior in common, part of the logic for this
// implementation is located in the ads/google/a4a directory rather than here.
// Most other ad networks will want to put their A4A code entirely in the
// extensions/amp-ad-network-${NETWORK_NAME}-impl directory.
import '../../amp-a4a/0.1/real-time-config-manager';
import {
AmpA4A,
ConsentTupleDef,
DEFAULT_SAFEFRAME_VERSION,
NO_SIGNING_EXP,
XORIGIN_MODE,
assignAdUrlToError,
} from '../../amp-a4a/0.1/amp-a4a';
import {
AmpAnalyticsConfigDef,
QQID_HEADER,
SANDBOX_HEADER,
STICKY_AD_PADDING_BOTTOM_EXP,
ValidAdContainerTypes,
addCsiSignalsToAmpAnalyticsConfig,
extractAmpAnalyticsConfig,
getCsiAmpAnalyticsConfig,
getCsiAmpAnalyticsVariables,
getEnclosingContainerTypes,
getIdentityToken,
googleAdUrl,
googleBlockParameters,
googlePageParameters,
groupAmpAdsByType,
isCdnProxy,
isReportingEnabled,
maybeAppendErrorParameter,
truncAndTimeUrl,
} from '../../../ads/google/a4a/utils';
import {CONSENT_POLICY_STATE} from '../../../src/consent-state';
import {Deferred} from '../../../src/utils/promise';
import {
FlexibleAdSlotDataTypeDef,
getFlexibleAdSlotData,
} from './flexible-ad-slot-utils';
import {Layout, isLayoutSizeDefined} from '../../../src/layout';
import {Navigation} from '../../../src/service/navigation';
import {RTC_VENDORS} from '../../amp-a4a/0.1/callout-vendors';
import {
RefreshManager, // eslint-disable-line no-unused-vars
getRefreshManager,
} from '../../amp-a4a/0.1/refresh-manager';
import {SafeframeHostApi} from './safeframe-host';
import {Services} from '../../../src/services';
import {
TFCD,
constructSRABlockParameters,
serializeTargeting,
sraBlockCallbackHandler,
} from './sra-utils';
import {WindowInterface} from '../../../src/window-interface';
import {
assertDoesNotContainDisplay,
setImportantStyles,
setStyles,
} from '../../../src/style';
import {
createElementWithAttributes,
isRTL,
removeElement,
} from '../../../src/dom';
import {deepMerge, dict} from '../../../src/utils/object';
import {dev, devAssert, user} from '../../../src/log';
import {domFingerprintPlain} from '../../../src/utils/dom-fingerprint';
import {escapeCssSelectorIdent} from '../../../src/css';
import {
extractUrlExperimentId,
isInManualExperiment,
} from '../../../ads/google/a4a/traffic-experiments';
import {
getAmpAdRenderOutsideViewport,
incrementLoadingAds,
is3pThrottled,
waitFor3pThrottle,
} from '../../amp-ad/0.1/concurrent-load';
import {getCryptoRandomBytesArray, utf8Decode} from '../../../src/utils/bytes';
import {getMode} from '../../../src/mode';
import {getMultiSizeDimensions} from '../../../ads/google/utils';
import {getOrCreateAdCid} from '../../../src/ad-cid';
import {
isExperimentOn,
randomlySelectUnsetExperiments,
} from '../../../src/experiments';
import {insertAnalyticsElement} from '../../../src/extension-analytics';
import {isArray} from '../../../src/types';
import {isCancellation} from '../../../src/error';
import {
lineDelimitedStreamer,
metaJsonCreativeGrouper,
} from '../../../ads/google/a4a/line-delimited-response-handler';
import {parseQueryString} from '../../../src/url';
import {stringHash32} from '../../../src/string';
import {tryParseJson} from '../../../src/json';
/** @type {string} */
const TAG = 'amp-ad-network-doubleclick-impl';
/** @const {string} */
const DOUBLECLICK_BASE_URL =
'https://securepubads.g.doubleclick.net/gampad/ads';
/** @const {string} */
const RTC_SUCCESS = '2';
/** @const {string} */
const DOUBLECLICK_SRA_EXP = 'doubleclickSraExp';
/** @const @enum{string} */
const DOUBLECLICK_SRA_EXP_BRANCHES = {
SRA_CONTROL: '117152666',
SRA: '117152667',
SRA_NO_RECOVER: '21062235',
};
/** @const {string} */
const ZINDEX_EXP = 'zIndexExp';
/**@const @enum{string} */
const ZINDEX_EXP_BRANCHES = {
NO_ZINDEX: '21065356',
HOLDBACK: '21065357',
};
/**
* Required size to be sent with fluid requests.
* @const {string}
*/
const DUMMY_FLUID_SIZE = '320x50';
/** @const @private {string} attribute indicating if lazy fetch is enabled.*/
const LAZY_FETCH_ATTRIBUTE = 'data-lazy-fetch';
/**
* Macros that can be expanded in json targeting attribute.
*/
const TARGETING_MACRO_ALLOWLIST = {
'CLIENT_ID': true,
};
/**
* Map of pageview tokens to the instances they belong to.
* @private {!Object<string, !AmpAdNetworkDoubleclickImpl>}
*/
let tokensToInstances = {};
/** @private {?Promise} */
let sraRequests = null;
/**
* The random subdomain to load SafeFrame from, if SafeFrame is
* being loaded from a random subdomain and if the subdomain
* has been generated.
* @private {?string}
*/
let safeFrameRandomSubdomain = null;
/** @typedef {{
adUrl: !Promise<string>,
lineItemId: string,
creativeId: string,
slotId: string,
slotIndex: string,
}} */
let TroubleshootDataDef;
/** @private {?JsonObject} */
let windowLocationQueryParameters;
/** @typedef {{width: number, height: number}} */
let SizeDef;
/** @typedef {(SizeDef|../../../src/layout-rect.LayoutRectDef)} */
let LayoutRectOrDimsDef;
/** @final */
export class AmpAdNetworkDoubleclickImpl extends AmpA4A {
/**
* @param {!Element} element
*/
constructor(element) {
super(element);
/**
* Config to generate amp-analytics element for active view reporting.
* @type {?JsonObject}
* @private
*/
this.ampAnalyticsConfig_ = null;
/** @private {!../../../src/service/extensions-impl.Extensions} */
this.extensions_ = Services.extensionsFor(this.win);
/** @private {?string} */
this.qqid_ = null;
/** @private {?LayoutRectOrDimsDef} */
this.initialSize_ = null;
/** @type {?string} */
this.parameterSize = null;
/** @private {?{width: number, height: number}} */
this.returnedSize_ = null;
/** @private {?Element} */
this.ampAnalyticsElement_ = null;
/** @type {?JsonObject|Object} */
this.jsonTargeting = null;
/** @type {string} */
this.adKey = '0';
/** @type {!Array<string>} */
this.experimentIds = [];
/** @protected {boolean} */
this.useSra = false;
/** @protected {?Deferred<?Response>} */
this.sraDeferred = null;
/** @private {?RefreshManager} */
this.refreshManager_ = null;
/** @private {number} */
this.refreshCount_ = 0;
/** @private {number} */
this.ifi_ = 0;
/** @private {boolean} */
this.isFluidRequest_ = false;
/**
* @private {boolean}
* Indicates that the primary size of the slot is fluid.
*/
this.isFluidPrimaryRequest_ = false;
/** @private {?string} */
this.fluidImpressionUrl_ = null;
/** @private {?Promise<!../../../ads/google/a4a/utils.IdentityToken>} */
this.identityTokenPromise_ = null;
/** @type {?../../../ads/google/a4a/utils.IdentityToken} */
this.identityToken = null;
/** @private {!TroubleshootDataDef} */
this.troubleshootData_ = /** @type {!TroubleshootDataDef} */ ({});
/**
* @private {?boolean} whether preferential rendered AMP creative, null
* indicates no creative render.
*/
this.isAmpCreative_ = null;
/** @private {boolean} */
this.isIdleRender_ = false;
/** @private {?./safeframe-host.SafeframeHostApi} */
this.safeframeApi_ = null;
/** @type {boolean} whether safeframe forced via tag */
this.forceSafeframe = false;
if ('forceSafeframe' in this.element.dataset) {
if (!/^(1|(true))$/i.test(this.element.dataset['forceSafeframe'])) {
user().warn(
TAG,
'Ignoring invalid data-force-safeframe attribute: ' +
this.element.dataset['forceSafeframe']
);
} else {
this.forceSafeframe = true;
}
}
/** @protected {ConsentTupleDef} */
this.consentTuple = {};
/** @protected {!Deferred<string>} */
this.getAdUrlDeferred = new Deferred();
/**
* @private {boolean}
* Set to true when initial expansion effort fails. If true, the slot will
* attempt to expand again when outside of the viewport.
*/
this.reattemptToExpandFluidCreative_ = false;
/**
* Whether or not the iframe containing the ad should be sandboxed via the
* "sandbox" attribute.
* @private {boolean}
*/
this.shouldSandbox_ = false;
/**
* Set after the ad request is built.
* @private {?FlexibleAdSlotDataTypeDef}
*/
this.flexibleAdSlotData_ = null;
/**
* If true, will add a z-index to flex ad slots upon expansion.
* @private {boolean}
*/
this.inZIndexHoldBack_ = false;
}
/**
* @return {number|boolean} render on idle configuration with false
* indicating disabled.
* @private
*/
getIdleRenderEnabled_() {
if (this.isIdleRender_) {
return this.isIdleRender_;
}
// Disable if publisher has indicated a non-default loading strategy.
if (this.element.getAttribute('data-loading-strategy')) {
return false;
}
const expVal = this.postAdResponseExperimentFeatures['render-idle-vp'];
const vpRange = parseInt(expVal, 10);
if (expVal && isNaN(vpRange)) {
// holdback branch sends non-numeric value.
return false;
}
return vpRange || 12;
}
/** @override */
idleRenderOutsideViewport() {
const vpRange = this.getIdleRenderEnabled_();
if (vpRange === false) {
return vpRange;
}
const renderOutsideViewport = this.renderOutsideViewport();
// False will occur when throttle in effect.
if (typeof renderOutsideViewport === 'boolean') {
return renderOutsideViewport;
}
this.isIdleRender_ = true;
// NOTE(keithwrightbos): handle race condition where previous
// idleRenderOutsideViewport marked slot as idle render despite never
// being schedule due to being beyond viewport max offset. If slot
// comes within standard outside viewport range, then ensure throttling
// will not be applied.
this.getResource()
.whenWithinViewport(renderOutsideViewport)
.then(() => (this.isIdleRender_ = false));
return vpRange;
}
/** @override */
isLayoutSupported(layout) {
this.isFluidPrimaryRequest_ = layout == Layout.FLUID;
this.isFluidRequest_ = this.isFluidRequest_ || this.isFluidPrimaryRequest_;
return this.isFluidPrimaryRequest_ || isLayoutSizeDefined(layout);
}
/** @override */
isValidElement() {
return this.isAmpAdElement();
}
/**
* Executes page level experiment diversion and pushes any experiment IDs
* onto this.experimentIds.
* @param {?string} urlExperimentId
* @visibleForTesting
*/
setPageLevelExperiments(urlExperimentId) {
let forcedExperimentId;
if (urlExperimentId) {
forcedExperimentId = {
// SRA
'7': DOUBLECLICK_SRA_EXP_BRANCHES.SRA_CONTROL,
'8': DOUBLECLICK_SRA_EXP_BRANCHES.SRA,
'9': DOUBLECLICK_SRA_EXP_BRANCHES.SRA_NO_RECOVER,
}[urlExperimentId];
if (forcedExperimentId) {
this.experimentIds.push(forcedExperimentId);
}
}
const experimentInfoList = /** @type {!Array<!../../../src/experiments.ExperimentInfo>} */ ([
{
experimentId: DOUBLECLICK_SRA_EXP,
isTrafficEligible: () =>
!forcedExperimentId &&
!this.win.document./*OK*/ querySelector(
'meta[name=amp-ad-enable-refresh], ' +
'amp-ad[type=doubleclick][data-enable-refresh], ' +
'meta[name=amp-ad-doubleclick-sra]'
),
branches: Object.keys(DOUBLECLICK_SRA_EXP_BRANCHES).map(
(key) => DOUBLECLICK_SRA_EXP_BRANCHES[key]
),
},
{
experimentId: ZINDEX_EXP,
isTrafficEligible: () => true,
branches: Object.values(ZINDEX_EXP_BRANCHES),
},
{
experimentId: NO_SIGNING_EXP.id,
isTrafficEligible: () => true,
branches: [NO_SIGNING_EXP.control, NO_SIGNING_EXP.experiment],
},
{
experimentId: STICKY_AD_PADDING_BOTTOM_EXP.id,
isTrafficEligible: () => true,
branches: [
STICKY_AD_PADDING_BOTTOM_EXP.control,
STICKY_AD_PADDING_BOTTOM_EXP.experiment,
],
},
]);
const setExps = this.randomlySelectUnsetExperiments_(experimentInfoList);
Object.keys(setExps).forEach(
(expName) => setExps[expName] && this.experimentIds.push(setExps[expName])
);
const moduleNomoduleExpId = this.getModuleNomoduleExpIds_();
if (moduleNomoduleExpId) {
this.experimentIds.push(moduleNomoduleExpId);
}
if (setExps[ZINDEX_EXP] == ZINDEX_EXP_BRANCHES.HOLDBACK) {
this.inZIndexHoldBack_ = true;
}
}
/**
* For easier unit testing.
* @param {!Array<!../../../src/experiments.ExperimentInfo>} experimentInfoList
* @return {!Object<string, string>}
*/
randomlySelectUnsetExperiments_(experimentInfoList) {
return randomlySelectUnsetExperiments(this.win, experimentInfoList);
}
/**
* For easier unit testing.
* @return {?string}
*/
extractUrlExperimentId_() {
return extractUrlExperimentId(this.win, this.element);
}
/** @private */
maybeDeprecationWarn_() {
const warnDeprecation = (feature) =>
user().warn(
TAG,
`${feature} is no longer supported for DoubleClick.` +
'Please refer to ' +
'https://github.com/ampproject/amphtml/issues/11834 ' +
'for more information'
);
const usdrd = 'useSameDomainRenderingUntilDeprecated';
const hasUSDRD =
usdrd in this.element.dataset ||
(tryParseJson(this.element.getAttribute('json')) || {})[usdrd];
if (hasUSDRD) {
warnDeprecation(usdrd);
}
const useRemoteHtml =
this.getAmpDoc().getMetaByName('amp-3p-iframe-src') !== null;
if (useRemoteHtml) {
warnDeprecation('remote.html');
}
}
/** @override */
delayAdRequestEnabled() {
if (this.element.getAttribute(LAZY_FETCH_ATTRIBUTE) !== 'true') {
return false;
}
return getAmpAdRenderOutsideViewport(this.element) || 3;
}
/** @override */
buildCallback() {
super.buildCallback();
this.maybeDeprecationWarn_();
this.setPageLevelExperiments(this.extractUrlExperimentId_());
const pubEnabledSra = !!this.win.document.querySelector(
'meta[name=amp-ad-doubleclick-sra]'
);
const delayFetchEnabled = !!this.win.document.querySelector(
`amp-ad[type=doubleclick][${escapeCssSelectorIdent(
LAZY_FETCH_ATTRIBUTE
)}=true]`
);
if (pubEnabledSra && delayFetchEnabled) {
user().warn(
TAG,
'SRA is not compatible with lazy fetching, disabling SRA'
);
}
this.useSra =
!delayFetchEnabled &&
((getMode().localDev &&
/(\?|&)force_sra=true(&|$)/.test(this.win.location.search)) ||
pubEnabledSra ||
[
DOUBLECLICK_SRA_EXP_BRANCHES.SRA,
DOUBLECLICK_SRA_EXP_BRANCHES.SRA_NO_RECOVER,
].some((eid) => this.experimentIds.indexOf(eid) >= 0));
this.identityTokenPromise_ = this.getAmpDoc()
.whenFirstVisible()
.then(() =>
getIdentityToken(this.win, this.getAmpDoc(), super.getConsentPolicy())
);
this.troubleshootData_.slotId = this.element.getAttribute('data-slot');
this.troubleshootData_.slotIndex = this.element.getAttribute(
'data-amp-slot-index'
);
if (!this.isFluidRequest_) {
const multiSizeStr = this.element.getAttribute('data-multi-size');
this.isFluidRequest_ =
!!multiSizeStr && multiSizeStr.indexOf('fluid') != -1;
}
}
/** @override */
shouldPreferentialRenderWithoutCrypto() {
devAssert(!isCdnProxy(this.win));
return true;
}
/**
* @param {?ConsentTupleDef} consentTuple
* @param {!Array<!AmpAdNetworkDoubleclickImpl>=} instances
* @return {!Object<string,string|boolean|number>}
* @visibleForTesting
*/
getPageParameters(consentTuple, instances) {
instances = instances || [this];
const tokens = getPageviewStateTokensForAdRequest(instances);
const {consentString, gdprApplies} = consentTuple;
return {
'npa':
consentTuple.consentState == CONSENT_POLICY_STATE.INSUFFICIENT ||
consentTuple.consentState == CONSENT_POLICY_STATE.UNKNOWN
? 1
: null,
'gdfp_req': '1',
'sfv': DEFAULT_SAFEFRAME_VERSION,
'u_sd': WindowInterface.getDevicePixelRatio(),
'gct': this.getLocationQueryParameterValue('google_preview') || null,
'psts': tokens.length ? tokens : null,
'gdpr': gdprApplies === true ? '1' : gdprApplies === false ? '0' : null,
'gdpr_consent': consentString,
};
}
/**
* Constructs block-level url parameters.
* @return {!Object<string,string|boolean|number>}
*/
getBlockParameters_() {
devAssert(this.initialSize_);
devAssert(this.jsonTargeting);
const tfcd = this.jsonTargeting && this.jsonTargeting[TFCD];
this.win['ampAdGoogleIfiCounter'] = this.win['ampAdGoogleIfiCounter'] || 1;
this.ifi_ =
(this.isRefreshing && this.ifi_) || this.win['ampAdGoogleIfiCounter']++;
const pageLayoutBox = this.isSinglePageStoryAd
? this.element.getPageLayoutBox()
: null;
let msz = null;
let psz = null;
let fws = null;
this.flexibleAdSlotData_ = getFlexibleAdSlotData(
this.win,
this.element.parentElement
);
const {fwSignal, slotWidth, parentWidth} = this.flexibleAdSlotData_;
// If slotWidth is -1, that means its width must be determined by its
// parent container, and so should have the same value as parentWidth.
msz = `${slotWidth == -1 ? parentWidth : slotWidth}x-1`;
psz = `${parentWidth}x-1`;
fws = fwSignal ? fwSignal : '0';
return {
'iu': this.element.getAttribute('data-slot'),
'co':
this.jsonTargeting && this.jsonTargeting['cookieOptOut'] ? '1' : null,
'adk': this.adKey,
'sz': this.isSinglePageStoryAd ? '1x1' : this.parameterSize,
'output': 'html',
'impl': 'ifr',
'tfcd': tfcd == undefined ? null : tfcd,
'adtest': isInManualExperiment(this.element) ? 'on' : null,
'ifi': this.ifi_,
'rc': this.refreshCount_ || null,
'frc': Number(this.fromResumeCallback) || null,
'fluid': this.isFluidRequest_ ? 'height' : null,
'fsf': this.forceSafeframe ? '1' : null,
'msz': msz,
'psz': psz,
'fws': fws,
'scp': serializeTargeting(
(this.jsonTargeting && this.jsonTargeting['targeting']) || null,
(this.jsonTargeting && this.jsonTargeting['categoryExclusions']) ||
null,
null
),
'spsa': this.isSinglePageStoryAd
? `${pageLayoutBox.width}x${pageLayoutBox.height}`
: null,
...googleBlockParameters(this),
};
}
/**
* Populate's block-level state for ad URL construction.
* Sets initialSize_ , jsonTargeting, and adKey member fields.
* @param {ConsentTupleDef} consentTuple
* @visibleForTesting
*/
populateAdUrlState(consentTuple) {
this.consentTuple = consentTuple;
// Allow for pub to override height/width via override attribute.
const width =
Number(this.element.getAttribute('data-override-width')) ||
Number(this.element.getAttribute('width'));
const height =
Number(this.element.getAttribute('data-override-height')) ||
Number(this.element.getAttribute('height'));
this.initialSize_ = this.isFluidPrimaryRequest_
? {width: 0, height: 0}
: width && height
? // width/height could be 'auto' in which case we fallback to measured.
{width, height}
: this.getIntersectionElementLayoutBox();
this.jsonTargeting = tryParseJson(this.element.getAttribute('json')) || {};
this.adKey = this.generateAdKey_(
`${this.initialSize_.width}x${this.initialSize_.height}`
);
this.parameterSize = this.getParameterSize_();
}
/** @override */
getConsentPolicy() {
// Ensure that build is not blocked by need for consent (delay will occur
// prior to RTC & ad URL construction).
return null;
}
/** @override */
getAdUrl(opt_consentTuple, opt_rtcResponsesPromise) {
if (this.useSra) {
this.sraDeferred = this.sraDeferred || new Deferred();
}
const consentTuple = opt_consentTuple || {};
if (
consentTuple.consentState == CONSENT_POLICY_STATE.UNKNOWN &&
this.element.getAttribute('data-npa-on-unknown-consent') != 'true'
) {
user().info(TAG, 'Ad request suppressed due to unknown consent');
this.getAdUrlDeferred.resolve('');
return Promise.resolve('');
}
if (this.iframe && !this.isRefreshing) {
dev().warn(TAG, `Frame already exists, sra: ${this.useSra}`);
this.getAdUrlDeferred.resolve('');
return Promise.resolve('');
}
opt_rtcResponsesPromise = opt_rtcResponsesPromise || Promise.resolve();
// TODO(keithwrightbos): SRA blocks currently unnecessarily generate full
// ad url. This could be optimized however non-SRA ad url is required to
// fallback to non-SRA if single block.
this.populateAdUrlState(consentTuple);
// TODO: Check for required and allowed parameters. Probably use
// validateData, from 3p/3p/js, after moving it someplace common.
const startTime = Date.now();
const timerService = Services.timerFor(this.win);
const identityPromise = timerService
.timeoutPromise(1000, this.identityTokenPromise_)
.catch(() => {
// On error/timeout, proceed.
return /**@type {!../../../ads/google/a4a/utils.IdentityToken}*/ ({});
});
const checkStillCurrent = this.verifyStillCurrent();
const rtcParamsPromise = opt_rtcResponsesPromise.then((results) => {
checkStillCurrent();
return this.mergeRtcResponses_(results);
});
// TODO(#28555): Delete extra logic when 'expand-json-targeting' exp launches.
const isJsonTargetingExpOn = isExperimentOn(
this.win,
'expand-json-targeting'
);
const targetingExpansionPromise = isJsonTargetingExpOn
? timerService
.timeoutPromise(1000, this.expandJsonTargeting_(rtcParamsPromise))
.catch(() => {
dev().warn(TAG, 'JSON Targeting expansion failed/timed out.');
})
: Promise.resolve();
Promise.all([
rtcParamsPromise,
identityPromise,
targetingExpansionPromise,
]).then((results) => {
checkStillCurrent();
const rtcParams = results[0];
this.identityToken = results[1];
googleAdUrl(
this,
DOUBLECLICK_BASE_URL,
startTime,
Object.assign(
this.getBlockParameters_(),
this.buildIdentityParams(),
this.getPageParameters(consentTuple, /* instances= */ undefined),
rtcParams
),
this.experimentIds
).then((adUrl) => this.getAdUrlDeferred.resolve(adUrl));
});
this.troubleshootData_.adUrl = this.getAdUrlDeferred.promise;
return this.getAdUrlDeferred.promise;
}
/**
* Waits for RTC to complete, then overwrites json attr targeting values
* with expanded vars.
* @param {!Promise} rtcMergedPromise
* @return {!Promise}
*/
expandJsonTargeting_(rtcMergedPromise) {
return rtcMergedPromise.then(() => {
const targeting = this.jsonTargeting['targeting'];
if (!targeting) {
return Promise.resolve();
}
const expansionPromises = Object.keys(targeting).map((key) =>
this.expandValue_(targeting[key]).then((expanded) => {
targeting[key] = expanded;
})
);
return Promise.all(expansionPromises);
});
}
/**
* Expands json targeting values.
* @param {string|Array<string>|null} value
* @return {!Promise<string>|!Promise<Array<string>>}
*/
expandValue_(value) {
if (!value) {
return Promise.resolve(value);
}
if (isArray(value)) {
return Promise.all(
value.map((arrVal) => this.expandString_(dev().assertString(arrVal)))
);
}
return this.expandString_(dev().assertString(value));
}
/**
* Expands macros in strings.
* @param {string} string
* @return {!Promise<string>}
*/
expandString_(string) {
return Services.urlReplacementsForDoc(
this.element
)./*OK*/ expandStringAsync(
string,
undefined /*opt_bindings*/,
TARGETING_MACRO_ALLOWLIST
);
}
/**
* Converts identity token response to ad request parameters.
* @return {!Object<string,string>}
*/
buildIdentityParams() {
return this.identityToken
? {
adsid: this.identityToken.token || null,
jar: this.identityToken.jar || null,
pucrd: this.identityToken.pucrd || null,
}
: {};
}
/**
* Merges all of the rtcResponses into the JSON targeting and
* category exclusions.
* @param {?Array<!rtcResponseDef>} rtcResponseArray
* @return {?Object|undefined}
* @private
*/
mergeRtcResponses_(rtcResponseArray) {
if (!rtcResponseArray) {
return null;
}
const artc = [];
const ati = [];
const ard = [];
let exclusions;
rtcResponseArray.forEach((rtcResponse) => {
if (!rtcResponse) {
return;
}
artc.push(rtcResponse.rtcTime);
ati.push(rtcResponse.error || RTC_SUCCESS);
ard.push(rtcResponse.callout);
if (rtcResponse.response) {
if (rtcResponse.response['targeting']) {
const rewrittenResponse = this.rewriteRtcKeys_(
rtcResponse.response['targeting'],
rtcResponse.callout
);
this.jsonTargeting['targeting'] = !!this.jsonTargeting['targeting']
? deepMerge(this.jsonTargeting['targeting'], rewrittenResponse)
: rewrittenResponse;
}
if (rtcResponse.response['categoryExclusions']) {
if (!exclusions) {
exclusions = {};
if (this.jsonTargeting['categoryExclusions']) {
/** @type {!Array} */ (this.jsonTargeting[
'categoryExclusions'
]).forEach((exclusion) => {
exclusions[exclusion] = true;
});
}
}
/** @type {!Array} */ (rtcResponse.response[
'categoryExclusions'
]).forEach((exclusion) => {
exclusions[exclusion] = true;
});
}
}
});
if (exclusions) {
this.jsonTargeting['categoryExclusions'] = Object.keys(exclusions);
}
return {'artc': artc.join() || null, 'ati': ati.join(), 'ard': ard.join()};
}
/** @override */
getCustomRealTimeConfigMacros_() {
/**
* This lists allowed attributes on the amp-ad element to be used as
* macros for constructing the RTC URL. Add attributes here, in lowercase,
* to make them available.
*/
const allowlist = {
'height': true,
'width': true,
'data-slot': true,
'data-multi-size': true,
'data-multi-size-validation': true,
'data-override-width': true,
'data-override-height': true,
'data-amp-slot-index': true,
};
return {
PAGEVIEWID: () => Services.documentInfoForDoc(this.element).pageViewId,
PAGEVIEWID_64: () =>
Services.documentInfoForDoc(this.element).pageViewId64,
HREF: () => this.win.location.href,
REFERRER: (opt_timeout) => this.getReferrer_(opt_timeout),
TGT: () =>
JSON.stringify(
(tryParseJson(this.element.getAttribute('json')) || {})['targeting']
),
ADCID: (opt_timeout) =>
getOrCreateAdCid(
this.getAmpDoc(),
'AMP_ECID_GOOGLE',
'_ga',
parseInt(opt_timeout, 10)
),
ATTR: (name) => {
if (!allowlist[name.toLowerCase()]) {
dev().warn('TAG', `Invalid attribute ${name}`);
} else {
return this.element.getAttribute(name);
}
},
ELEMENT_POS: () => this.element.getPageLayoutBox().top,
SCROLL_TOP: () =>
Services.viewportForDoc(this.getAmpDoc()).getScrollTop(),
PAGE_HEIGHT: () =>
Services.viewportForDoc(this.getAmpDoc()).getScrollHeight(),
BKG_STATE: () => (this.getAmpDoc().isVisible() ? 'visible' : 'hidden'),
CANONICAL_URL: () =>
Services.documentInfoForDoc(this.element).canonicalUrl,
};
}
/**
* Returns the referrer or undefined if the referrer is not resolved
* before the given timeout
* @param {number=} opt_timeout
* @return {!(Promise<string>|Promise<undefined>)} A promise with a referrer or undefined
* if timed out
* @private
*/
getReferrer_(opt_timeout) {
const timeoutInt = parseInt(opt_timeout, 10);
const referrerPromise = Services.viewerForDoc(
this.getAmpDoc()
).getReferrerUrl();
if (isNaN(timeoutInt) || timeoutInt < 0) {
return referrerPromise;
}
return Services.timerFor(this.win)
.timeoutPromise(timeoutInt, referrerPromise)
.catch(() => undefined);
}
/**
* Appends the callout value to the keys of response to prevent a collision
* case caused by multiple vendors returning the same keys.
* @param {!Object<string, string>} response
* @param {string} callout
* @return {!Object<string, string>}
* @private
*/
rewriteRtcKeys_(response, callout) {
// Only perform this substitution for vendor-defined URLs.
if (!RTC_VENDORS[callout] || RTC_VENDORS[callout].disableKeyAppend) {
return response;
}
const newResponse = {};
Object.keys(response).forEach((key) => {
newResponse[`${key}_${callout}`] = response[key];
});
return newResponse;
}
/** @override */
onNetworkFailure(error, adUrl) {
dev().info(TAG, 'network error, attempt adding of error parameter', error);
return {adUrl: maybeAppendErrorParameter(adUrl, 'n')};
}
/** @override */
maybeValidateAmpCreative(bytes, headers) {
if (headers.get('AMP-Verification-Checksum-Algorithm') !== 'djb2a-32') {
return super.maybeValidateAmpCreative(bytes, headers);
}
const checksum = headers.get('AMP-Verification-Checksum');
return Promise.resolve(
checksum && stringHash32(utf8Decode(bytes)) == checksum ? bytes : null
);
}
/** @override */
extractSize(responseHeaders) {
this.ampAnalyticsConfig_ = extractAmpAnalyticsConfig(this, responseHeaders);
this.qqid_ = responseHeaders.get(QQID_HEADER);
this.shouldSandbox_ = responseHeaders.get(SANDBOX_HEADER) == 'true';
this.troubleshootData_.creativeId = dev().assertString(
responseHeaders.get('google-creative-id') || '-1'
);