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bidderFactory.js
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bidderFactory.js
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import Adapter from '../adapter.js';
import adapterManager from '../adapterManager.js';
import { config } from '../config.js';
import { createBid } from '../bidfactory.js';
import { userSync } from '../userSync.js';
import { nativeBidIsValid } from '../native.js';
import { isValidVideoBid } from '../video.js';
import CONSTANTS from '../constants.json';
import * as events from '../events.js';
import {includes} from '../polyfill.js';
import { ajax } from '../ajax.js';
import { logWarn, logInfo, logError, parseQueryStringParameters, delayExecution, parseSizesInput, flatten, uniques, timestamp, deepAccess, isArray, isPlainObject } from '../utils.js';
import { ADPOD } from '../mediaTypes.js';
import { getHook, hook } from '../hook.js';
import { getCoreStorageManager } from '../storageManager.js';
import {auctionManager} from '../auctionManager.js';
import { bidderSettings } from '../bidderSettings.js';
import {useMetrics} from '../utils/perfMetrics.js';
export const storage = getCoreStorageManager('bidderFactory');
/**
* This file aims to support Adapters during the Prebid 0.x -> 1.x transition.
*
* Prebid 1.x and Prebid 0.x will be in separate branches--perhaps for a long time.
* This function defines an API for adapter construction which is compatible with both versions.
* Adapters which use it can maintain their code in master, and only this file will need to change
* in the 1.x branch.
*
* Typical usage looks something like:
*
* const adapter = registerBidder({
* code: 'myBidderCode',
* aliases: ['alias1', 'alias2'],
* supportedMediaTypes: ['video', 'native'],
* isBidRequestValid: function(paramsObject) { return true/false },
* buildRequests: function(bidRequests, bidderRequest) { return some ServerRequest(s) },
* interpretResponse: function(oneServerResponse) { return some Bids, or throw an error. }
* });
*
* @see BidderSpec for the full API and more thorough descriptions.
*
*/
/**
* @typedef {object} BidderSpec An object containing the adapter-specific functions needed to
* make a Bidder.
*
* @property {string} code A code which will be used to uniquely identify this bidder. This should be the same
* one as is used in the call to registerBidAdapter
* @property {string[]} [aliases] A list of aliases which should also resolve to this bidder.
* @property {MediaType[]} [supportedMediaTypes]: A list of Media Types which the adapter supports.
* @property {function(object): boolean} isBidRequestValid Determines whether or not the given bid has all the params
* needed to make a valid request.
* @property {function(BidRequest[], bidderRequest): ServerRequest|ServerRequest[]} buildRequests Build the request to the Server
* which requests Bids for the given array of Requests. Each BidRequest in the argument array is guaranteed to have
* passed the isBidRequestValid() test.
* @property {function(ServerResponse, BidRequest): Bid[]} interpretResponse Given a successful response from the Server,
* interpret it and return the Bid objects. This function will be run inside a try/catch.
* If it throws any errors, your bids will be discarded.
* @property {function(SyncOptions, ServerResponse[]): UserSync[]} [getUserSyncs] Given an array of all the responses
* from the server, determine which user syncs should occur. The argument array will contain every element
* which has been sent through to interpretResponse. The order of syncs in this array matters. The most
* important ones should come first, since publishers may limit how many are dropped on their page.
* @property {function(object): object} transformBidParams Updates bid params before creating bid request
}}
*/
/**
* @typedef {object} BidRequest
*
* @property {string} bidId A string which uniquely identifies this BidRequest in the current Auction.
* @property {object} params Any bidder-specific params which the publisher used in their bid request.
*/
/**
* @typedef {object} BidderAuctionResponse An object encapsulating an adapter response for current Auction
*
* @property {Array<Bid>} bids Contextual bids returned by this adapter, if any
* @property {object|null} fledgeAuctionConfigs Optional FLEDGE response, as a map of impid -> auction_config
*/
/**
* @typedef {object} ServerRequest
*
* @property {('GET'|'POST')} method The type of request which this is.
* @property {string} url The endpoint for the request. For example, "//bids.example.com".
* @property {string|object} data Data to be sent in the request.
* @property {object} options Content-Type set in the header of the bid request, overrides default 'text/plain'.
* If this is a GET request, they'll become query params. If it's a POST request, they'll be added to the body.
* Strings will be added as-is. Objects will be unpacked into query params based on key/value mappings, or
* JSON-serialized into the Request body.
*/
/**
* @typedef {object} ServerResponse
*
* @property {*} body The response body. If this is legal JSON, then it will be parsed. Otherwise it'll be a
* string with the body's content.
* @property {{get: function(string): string} headers The response headers.
* Call this like `ServerResponse.headers.get("Content-Type")`
*/
/**
* @typedef {object} Bid
*
* @property {string} requestId The specific BidRequest which this bid is aimed at.
* This should match the BidRequest.bidId which this Bid targets.
* @property {string} ad A URL which can be used to load this ad, if it's chosen by the publisher.
* @property {string} currency The currency code for the cpm value
* @property {number} cpm The bid price, in US cents per thousand impressions.
* @property {number} ttl Time-to-live - how long (in seconds) Prebid can use this bid.
* @property {boolean} netRevenue Boolean defining whether the bid is Net or Gross. The default is true (Net).
* @property {number} height The height of the ad, in pixels.
* @property {number} width The width of the ad, in pixels.
*
* @property {object} [native] Object for storing native creative assets
* @property {object} [video] Object for storing video response data
* @property {object} [meta] Object for storing bid meta data
* @property {string} [meta.primaryCatId] The IAB primary category ID
* @property [Renderer] renderer A Renderer which can be used as a default for this bid,
* if the publisher doesn't override it. This is only relevant for Outstream Video bids.
*/
/**
* @typedef {Object} SyncOptions
*
* An object containing information about usersyncs which the adapter should obey.
*
* @property {boolean} iframeEnabled True if iframe usersyncs are allowed, and false otherwise
* @property {boolean} pixelEnabled True if image usersyncs are allowed, and false otherwise
*/
/**
* TODO: Move this to the UserSync module after that PR is merged.
*
* @typedef {object} UserSync
*
* @property {('image'|'iframe')} type The type of user sync to be done.
* @property {string} url The URL which makes the sync happen.
*/
// common params for all mediaTypes
const COMMON_BID_RESPONSE_KEYS = ['cpm', 'ttl', 'creativeId', 'netRevenue', 'currency'];
const DEFAULT_REFRESHIN_DAYS = 1;
/**
* Register a bidder with prebid, using the given spec.
*
* If possible, Adapter modules should use this function instead of adapterManager.registerBidAdapter().
*
* @param {BidderSpec} spec An object containing the bare-bones functions we need to make a Bidder.
*/
export function registerBidder(spec) {
const mediaTypes = Array.isArray(spec.supportedMediaTypes)
? { supportedMediaTypes: spec.supportedMediaTypes }
: undefined;
function putBidder(spec) {
const bidder = newBidder(spec);
adapterManager.registerBidAdapter(bidder, spec.code, mediaTypes);
}
putBidder(spec);
if (Array.isArray(spec.aliases)) {
spec.aliases.forEach(alias => {
let aliasCode = alias;
let gvlid;
let skipPbsAliasing;
if (isPlainObject(alias)) {
aliasCode = alias.code;
gvlid = alias.gvlid;
skipPbsAliasing = alias.skipPbsAliasing
}
adapterManager.aliasRegistry[aliasCode] = spec.code;
putBidder(Object.assign({}, spec, { code: aliasCode, gvlid, skipPbsAliasing }));
});
}
}
/**
* Make a new bidder from the given spec. This is exported mainly for testing.
* Adapters will probably find it more convenient to use registerBidder instead.
*
* @param {BidderSpec} spec
*/
export function newBidder(spec) {
return Object.assign(new Adapter(spec.code), {
getSpec: function() {
return Object.freeze(spec);
},
registerSyncs,
callBids: function(bidderRequest, addBidResponse, done, ajax, onTimelyResponse, configEnabledCallback) {
if (!Array.isArray(bidderRequest.bids)) {
return;
}
const adUnitCodesHandled = {};
function addBidWithCode(adUnitCode, bid) {
const metrics = useMetrics(bid.metrics);
metrics.checkpoint('addBidResponse');
adUnitCodesHandled[adUnitCode] = true;
if (metrics.measureTime('addBidResponse.validate', () => isValid(adUnitCode, bid))) {
addBidResponse(adUnitCode, bid);
} else {
addBidResponse.reject(adUnitCode, bid, CONSTANTS.REJECTION_REASON.INVALID)
}
}
// After all the responses have come back, call done() and
// register any required usersync pixels.
const responses = [];
function afterAllResponses() {
done();
config.runWithBidder(spec.code, () => {
events.emit(CONSTANTS.EVENTS.BIDDER_DONE, bidderRequest);
registerSyncs(responses, bidderRequest.gdprConsent, bidderRequest.uspConsent, bidderRequest.gppConsent);
});
}
const validBidRequests = adapterMetrics(bidderRequest)
.measureTime('validate', () => bidderRequest.bids.filter(filterAndWarn));
if (validBidRequests.length === 0) {
afterAllResponses();
return;
}
const bidRequestMap = {};
validBidRequests.forEach(bid => {
bidRequestMap[bid.bidId] = bid;
// Delete this once we are 1.0
if (!bid.adUnitCode) {
bid.adUnitCode = bid.placementCode
}
});
processBidderRequests(spec, validBidRequests, bidderRequest, ajax, configEnabledCallback, {
onRequest: requestObject => events.emit(CONSTANTS.EVENTS.BEFORE_BIDDER_HTTP, bidderRequest, requestObject),
onResponse: (resp) => {
onTimelyResponse(spec.code);
responses.push(resp)
},
/** Process eventual BidderAuctionResponse.fledgeAuctionConfig field in response.
* @param {Array<FledgeAuctionConfig>} fledgeAuctionConfigs
*/
onFledgeAuctionConfigs: (fledgeAuctionConfigs) => {
fledgeAuctionConfigs.forEach((fledgeAuctionConfig) => {
const bidRequest = bidRequestMap[fledgeAuctionConfig.bidId];
if (bidRequest) {
addComponentAuction(bidRequest, fledgeAuctionConfig);
}
});
},
// If the server responds with an error, there's not much we can do beside logging.
onError: (errorMessage, error) => {
onTimelyResponse(spec.code);
adapterManager.callBidderError(spec.code, error, bidderRequest)
events.emit(CONSTANTS.EVENTS.BIDDER_ERROR, { error, bidderRequest });
logError(`Server call for ${spec.code} failed: ${errorMessage} ${error.status}. Continuing without bids.`);
},
onBid: (bid) => {
const bidRequest = bidRequestMap[bid.requestId];
if (bidRequest) {
bid.adapterCode = bidRequest.bidder;
if (isInvalidAlternateBidder(bid.bidderCode, bidRequest.bidder)) {
logWarn(`${bid.bidderCode} is not a registered partner or known bidder of ${bidRequest.bidder}, hence continuing without bid. If you wish to support this bidder, please mark allowAlternateBidderCodes as true in bidderSettings.`);
addBidResponse.reject(bidRequest.adUnitCode, bid, CONSTANTS.REJECTION_REASON.BIDDER_DISALLOWED)
return;
}
// creating a copy of original values as cpm and currency are modified later
bid.originalCpm = bid.cpm;
bid.originalCurrency = bid.currency;
bid.meta = bid.meta || Object.assign({}, bid[bidRequest.bidder]);
const prebidBid = Object.assign(createBid(CONSTANTS.STATUS.GOOD, bidRequest), bid);
addBidWithCode(bidRequest.adUnitCode, prebidBid);
} else {
logWarn(`Bidder ${spec.code} made bid for unknown request ID: ${bid.requestId}. Ignoring.`);
addBidResponse.reject(null, bid, CONSTANTS.REJECTION_REASON.INVALID_REQUEST_ID);
}
},
onCompletion: afterAllResponses,
});
}
});
function isInvalidAlternateBidder(responseBidder, requestBidder) {
let allowAlternateBidderCodes = bidderSettings.get(requestBidder, 'allowAlternateBidderCodes') || false;
let alternateBiddersList = bidderSettings.get(requestBidder, 'allowedAlternateBidderCodes');
if (!!responseBidder && !!requestBidder && requestBidder !== responseBidder) {
alternateBiddersList = isArray(alternateBiddersList) ? alternateBiddersList.map(val => val.trim().toLowerCase()).filter(val => !!val).filter(uniques) : alternateBiddersList;
if (!allowAlternateBidderCodes || (isArray(alternateBiddersList) && (alternateBiddersList[0] !== '*' && !alternateBiddersList.includes(responseBidder)))) {
return true;
}
}
return false;
}
function registerSyncs(responses, gdprConsent, uspConsent, gppConsent) {
registerSyncInner(spec, responses, gdprConsent, uspConsent, gppConsent);
}
function filterAndWarn(bid) {
if (!spec.isBidRequestValid(bid)) {
logWarn(`Invalid bid sent to bidder ${spec.code}: ${JSON.stringify(bid)}`);
return false;
}
return true;
}
}
/**
* Run a set of bid requests - that entails converting them to HTTP requests, sending
* them over the network, and parsing the responses.
*
* @param spec bid adapter spec
* @param bids bid requests to run
* @param bidderRequest the bid request object that `bids` is connected to
* @param ajax ajax method to use
* @param wrapCallback {function(callback)} a function used to wrap every callback (for the purpose of `config.currentBidder`)
* @param onRequest {function({})} invoked once for each HTTP request built by the adapter - with the raw request
* @param onResponse {function({})} invoked once on each successful HTTP response - with the raw response
* @param onError {function(String, {})} invoked once for each HTTP error - with status code and response
* @param onBid {function({})} invoked once for each bid in the response - with the bid as returned by interpretResponse
* @param onCompletion {function()} invoked once when all bid requests have been processed
*/
export const processBidderRequests = hook('sync', function (spec, bids, bidderRequest, ajax, wrapCallback, {onRequest, onResponse, onFledgeAuctionConfigs, onError, onBid, onCompletion}) {
const metrics = adapterMetrics(bidderRequest);
onCompletion = metrics.startTiming('total').stopBefore(onCompletion);
let requests = metrics.measureTime('buildRequests', () => spec.buildRequests(bids, bidderRequest));
if (!requests || requests.length === 0) {
onCompletion();
return;
}
if (!Array.isArray(requests)) {
requests = [requests];
}
const requestDone = delayExecution(onCompletion, requests.length);
requests.forEach((request) => {
const requestMetrics = metrics.fork();
function addBid(bid) {
if (bid != null) bid.metrics = requestMetrics.fork().renameWith();
onBid(bid);
}
// If the server responds successfully, use the adapter code to unpack the Bids from it.
// If the adapter code fails, no bids should be added. After all the bids have been added,
// make sure to call the `requestDone` function so that we're one step closer to calling onCompletion().
const onSuccess = wrapCallback(function(response, responseObj) {
networkDone();
try {
response = JSON.parse(response);
} catch (e) { /* response might not be JSON... that's ok. */ }
// Make response headers available for #1742. These are lazy-loaded because most adapters won't need them.
response = {
body: response,
headers: headerParser(responseObj)
};
onResponse(response);
try {
response = requestMetrics.measureTime('interpretResponse', () => spec.interpretResponse(response, request));
} catch (err) {
logError(`Bidder ${spec.code} failed to interpret the server's response. Continuing without bids`, null, err);
requestDone();
return;
}
let bids;
// Extract additional data from a structured {BidderAuctionResponse} response
if (response && isArray(response.fledgeAuctionConfigs)) {
onFledgeAuctionConfigs(response.fledgeAuctionConfigs);
bids = response.bids;
} else {
bids = response;
}
if (bids) {
if (isArray(bids)) {
bids.forEach(addBid);
} else {
addBid(bids);
}
}
requestDone();
function headerParser(xmlHttpResponse) {
return {
get: responseObj.getResponseHeader.bind(responseObj)
};
}
});
const onFailure = wrapCallback(function (errorMessage, error) {
networkDone();
onError(errorMessage, error);
requestDone();
});
onRequest(request);
const networkDone = requestMetrics.startTiming('net');
switch (request.method) {
case 'GET':
ajax(
`${request.url}${formatGetParameters(request.data)}`,
{
success: onSuccess,
error: onFailure
},
undefined,
Object.assign({
method: 'GET',
withCredentials: true
}, request.options)
);
break;
case 'POST':
ajax(
request.url,
{
success: onSuccess,
error: onFailure
},
typeof request.data === 'string' ? request.data : JSON.stringify(request.data),
Object.assign({
method: 'POST',
contentType: 'text/plain',
withCredentials: true
}, request.options)
);
break;
default:
logWarn(`Skipping invalid request from ${spec.code}. Request type ${request.type} must be GET or POST`);
requestDone();
}
function formatGetParameters(data) {
if (data) {
return `?${typeof data === 'object' ? parseQueryStringParameters(data) : data}`;
}
return '';
}
})
}, 'processBidderRequests')
export const registerSyncInner = hook('async', function(spec, responses, gdprConsent, uspConsent, gppConsent) {
const aliasSyncEnabled = config.getConfig('userSync.aliasSyncEnabled');
if (spec.getUserSyncs && (aliasSyncEnabled || !adapterManager.aliasRegistry[spec.code])) {
let filterConfig = config.getConfig('userSync.filterSettings');
let syncs = spec.getUserSyncs({
iframeEnabled: !!(filterConfig && (filterConfig.iframe || filterConfig.all)),
pixelEnabled: !!(filterConfig && (filterConfig.image || filterConfig.all)),
}, responses, gdprConsent, uspConsent, gppConsent);
if (syncs) {
if (!Array.isArray(syncs)) {
syncs = [syncs];
}
syncs.forEach((sync) => {
userSync.registerSync(sync.type, spec.code, sync.url)
});
}
}
}, 'registerSyncs')
export const addComponentAuction = hook('sync', (_bidRequest, fledgeAuctionConfig) => {
logInfo(`bidderFactory.addComponentAuction`, fledgeAuctionConfig);
}, 'addComponentAuction')
export function preloadBidderMappingFile(fn, adUnits) {
if (!config.getConfig('adpod.brandCategoryExclusion')) {
return fn.call(this, adUnits);
}
let adPodBidders = adUnits
.filter((adUnit) => deepAccess(adUnit, 'mediaTypes.video.context') === ADPOD)
.map((adUnit) => adUnit.bids.map((bid) => bid.bidder))
.reduce(flatten, [])
.filter(uniques);
adPodBidders.forEach(bidder => {
let bidderSpec = adapterManager.getBidAdapter(bidder);
if (bidderSpec.getSpec().getMappingFileInfo) {
let info = bidderSpec.getSpec().getMappingFileInfo();
let refreshInDays = (info.refreshInDays) ? info.refreshInDays : DEFAULT_REFRESHIN_DAYS;
let key = (info.localStorageKey) ? info.localStorageKey : bidderSpec.getSpec().code;
let mappingData = storage.getDataFromLocalStorage(key);
try {
mappingData = mappingData ? JSON.parse(mappingData) : undefined;
if (!mappingData || timestamp() > mappingData.lastUpdated + refreshInDays * 24 * 60 * 60 * 1000) {
ajax(info.url,
{
success: (response) => {
try {
response = JSON.parse(response);
let mapping = {
lastUpdated: timestamp(),
mapping: response.mapping
}
storage.setDataInLocalStorage(key, JSON.stringify(mapping));
} catch (error) {
logError(`Failed to parse ${bidder} bidder translation mapping file`);
}
},
error: () => {
logError(`Failed to load ${bidder} bidder translation file`)
}
},
);
}
} catch (error) {
logError(`Failed to parse ${bidder} bidder translation mapping file`);
}
}
});
fn.call(this, adUnits);
}
getHook('checkAdUnitSetup').before(preloadBidderMappingFile);
/**
* Reads the data stored in localstorage and returns iab subcategory
* @param {string} bidderCode bidderCode
* @param {string} category bidders category
*/
export function getIabSubCategory(bidderCode, category) {
let bidderSpec = adapterManager.getBidAdapter(bidderCode);
if (bidderSpec.getSpec().getMappingFileInfo) {
let info = bidderSpec.getSpec().getMappingFileInfo();
let key = (info.localStorageKey) ? info.localStorageKey : bidderSpec.getBidderCode();
let data = storage.getDataFromLocalStorage(key);
if (data) {
try {
data = JSON.parse(data);
} catch (error) {
logError(`Failed to parse ${bidderCode} mapping data stored in local storage`);
}
return (data.mapping[category]) ? data.mapping[category] : null;
}
}
}
// check that the bid has a width and height set
function validBidSize(adUnitCode, bid, {index = auctionManager.index} = {}) {
if ((bid.width || parseInt(bid.width, 10) === 0) && (bid.height || parseInt(bid.height, 10) === 0)) {
bid.width = parseInt(bid.width, 10);
bid.height = parseInt(bid.height, 10);
return true;
}
const bidRequest = index.getBidRequest(bid);
const mediaTypes = index.getMediaTypes(bid);
const sizes = (bidRequest && bidRequest.sizes) || (mediaTypes && mediaTypes.banner && mediaTypes.banner.sizes);
const parsedSizes = parseSizesInput(sizes);
// if a banner impression has one valid size, we assign that size to any bid
// response that does not explicitly set width or height
if (parsedSizes.length === 1) {
const [ width, height ] = parsedSizes[0].split('x');
bid.width = parseInt(width, 10);
bid.height = parseInt(height, 10);
return true;
}
return false;
}
// Validate the arguments sent to us by the adapter. If this returns false, the bid should be totally ignored.
export function isValid(adUnitCode, bid, {index = auctionManager.index} = {}) {
function hasValidKeys() {
let bidKeys = Object.keys(bid);
return COMMON_BID_RESPONSE_KEYS.every(key => includes(bidKeys, key) && !includes([undefined, null], bid[key]));
}
function errorMessage(msg) {
return `Invalid bid from ${bid.bidderCode}. Ignoring bid: ${msg}`;
}
if (!adUnitCode) {
logWarn('No adUnitCode was supplied to addBidResponse.');
return false;
}
if (!bid) {
logWarn(`Some adapter tried to add an undefined bid for ${adUnitCode}.`);
return false;
}
if (!hasValidKeys()) {
logError(errorMessage(`Bidder ${bid.bidderCode} is missing required params. Check http://prebid.org/dev-docs/bidder-adapter-1.html for list of params.`));
return false;
}
if (FEATURES.NATIVE && bid.mediaType === 'native' && !nativeBidIsValid(bid, {index})) {
logError(errorMessage('Native bid missing some required properties.'));
return false;
}
if (bid.mediaType === 'video' && !isValidVideoBid(bid, {index})) {
logError(errorMessage(`Video bid does not have required vastUrl or renderer property`));
return false;
}
if (bid.mediaType === 'banner' && !validBidSize(adUnitCode, bid, {index})) {
logError(errorMessage(`Banner bids require a width and height`));
return false;
}
return true;
}
function adapterMetrics(bidderRequest) {
return useMetrics(bidderRequest.metrics).renameWith(n => [`adapter.client.${n}`, `adapters.client.${bidderRequest.bidderCode}.${n}`])
}