Data Controller Module: initial release

modules/dataControllerModule/index.js

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+/**
+ * This module validates the configuration and filters data accordingly
+ * @module modules/dataController
+ */
+import {config} from '../../src/config.js';
+import {getHook, module} from '../../src/hook.js';
+import {deepAccess, deepSetValue, prefixLog} from '../../src/utils.js';
+import {startAuction} from '../../src/prebid.js';
+
+const LOG_PRE_FIX = 'Data_Controller : ';
+const ALL = '*';
+const MODULE_NAME = 'dataController';
+const GLOBAL = {};
+let _dataControllerConfig;
+
+const _logger = prefixLog(LOG_PRE_FIX);
+
+/**
+ * BidderRequests hook to intiate module and reset data object
+ */
+export function filterBidData(fn, req) {
+  if (_dataControllerConfig.filterEIDwhenSDA) {
+    filterEIDs(req.adUnits, req.ortb2Fragments);
+  }
+
+  if (_dataControllerConfig.filterSDAwhenEID) {
+    filterSDA(req.adUnits, req.ortb2Fragments);
+  }
+  fn.call(this, req);
+  return req;
+}
+
+function containsConfiguredEIDS(eidSourcesMap, bidderCode) {
+  if (_dataControllerConfig.filterSDAwhenEID.includes(ALL)) {
+    return true;
+  }
+  let bidderEIDs = eidSourcesMap.get(bidderCode);
+  if (bidderEIDs == undefined) {
+    return false;
+  }
+  let containsEIDs = false;
+  _dataControllerConfig.filterSDAwhenEID.some(source => {
+    if (bidderEIDs.has(source)) {
+      containsEIDs = true;
+    }
+  });
+  return containsEIDs;
+}
+
+function containsConfiguredSDA(segementMap, bidderCode) {
+  if (_dataControllerConfig.filterEIDwhenSDA.includes(ALL)) {
+    return true;
+  }
+  return hasValue(segementMap.get(bidderCode)) || hasValue(segementMap.get(GLOBAL))
+}
+
+function hasValue(bidderSegement) {
+  let containsSDA = false;
+  if (bidderSegement == undefined) {
+    return false;
+  }
+  _dataControllerConfig.filterEIDwhenSDA.some(segment => {
+    if (bidderSegement.has(segment)) {
+      containsSDA = true;
+    }
+  });
+  return containsSDA;
+}
+
+function getSegmentConfig(ortb2Fragments) {
+  let bidderSDAMap = new Map();
+  let globalObject = deepAccess(ortb2Fragments, 'global') || {};
+
+  collectSegments(bidderSDAMap, GLOBAL, globalObject);
+  if (ortb2Fragments.bidder) {
+    for (const [key, value] of Object.entries(ortb2Fragments.bidder)) {
+      collectSegments(bidderSDAMap, key, value);
+    }
+  }
+  return bidderSDAMap;
+}
+
+function collectSegments(bidderSDAMap, key, data) {
+  let segmentSet = constructSegment(deepAccess(data, 'user.data') || []);
+  if (segmentSet && segmentSet.size > 0) bidderSDAMap.set(key, segmentSet);
+}
+
+function constructSegment(userData) {
+  let segmentSet;
+  if (userData) {
+    segmentSet = new Set();
+    for (let i = 0; i < userData.length; i++) {
+      let segments = userData[i].segment;
+      let segmentPrefix = '';
+      if (userData[i].name) {
+        segmentPrefix = userData[i].name + ':';
+      }
+
+      if (userData[i].ext && userData[i].ext.segtax) {
+        segmentPrefix += userData[i].ext.segtax + ':';
+      }
+      for (let j = 0; j < segments.length; j++) {
+        segmentSet.add(segmentPrefix + segments[j].id);
+      }
+    }
+  }
+
+  return segmentSet;
+}
+
+function getEIDsSource(adUnits) {
+  let bidderEIDSMap = new Map();
+  adUnits.forEach(adUnit => {
+    adUnit.bids.forEach(bid => {
+      let userEIDs = deepAccess(bid, 'userIdAsEids') || [];
+
+      if (userEIDs) {
+        let sourceSet = new Set();
+        for (let i = 0; i < userEIDs.length; i++) {
+          let source = userEIDs[i].source;
+          sourceSet.add(source);
+        }
+        bidderEIDSMap.set(bid.bidder, sourceSet);
+      }
+    });
+  });
+
+  return bidderEIDSMap;
+}
+
+function filterSDA(adUnits, ortb2Fragments) {
+  let bidderEIDSMap = getEIDsSource(adUnits);
+  let resetGlobal = false;
+  for (const [key, value] of Object.entries(ortb2Fragments.bidder)) {
+    let resetSDA = containsConfiguredEIDS(bidderEIDSMap, key);
+    if (resetSDA) {
+      deepSetValue(value, 'user.data', []);
+      resetGlobal = true;
+    }
+  }
+  if (resetGlobal) {
+    deepSetValue(ortb2Fragments, 'global.user.data', [])
+  }
+}
+
+function filterEIDs(adUnits, ortb2Fragments) {
+  let segementMap = getSegmentConfig(ortb2Fragments);
+  let globalEidUpdate = false;
+  adUnits.forEach(adUnit => {
+    adUnit.bids.forEach(bid => {
+      let resetEID = containsConfiguredSDA(segementMap, bid.bidder);
+      if (resetEID) {
+        globalEidUpdate = true;
+        bid.userIdAsEids = [];
+        bid.userId = {};
+        if (ortb2Fragments.bidder) {
+          let bidderFragment = ortb2Fragments.bidder[bid.bidder];
+          let userExt = deepAccess(bidderFragment, 'user.ext.eids') || [];
+          if (userExt) {
+            deepSetValue(bidderFragment, 'user.ext.eids', [])
+          }
+        }
+      }
+    });
+  });
+
+  if (globalEidUpdate) {
+    deepSetValue(ortb2Fragments, 'global.user.ext.eids', [])
+  }
+  return adUnits;
+}
+
+export function init() {
+  const confListener = config.getConfig(MODULE_NAME, dataControllerConfig => {
+    const dataController = dataControllerConfig && dataControllerConfig.dataController;
+    if (!dataController) {
+      _logger.logInfo(`Data Controller is not configured`);
+      startAuction.getHooks({hook: filterBidData}).remove();
+      return;
+    }
+
+    if (dataController.filterEIDwhenSDA && dataController.filterSDAwhenEID) {
+      _logger.logInfo(`Data Controller can be configured with either filterEIDwhenSDA or filterSDAwhenEID`);
+      startAuction.getHooks({hook: filterBidData}).remove();
+      return;
+    }
+    confListener(); // unsubscribe config listener
+    _dataControllerConfig = dataController;
+
+    getHook('startAuction').before(filterBidData);
+  });
+}
+
+init();
+module(MODULE_NAME, init);

modules/dataControllerModule/index.md

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+# Overview
+
+```
+Module Name: Data Controller Module
+```
+
+# Description
+
+This module will filter EIDs and SDA based on the configurations.
+
+Sub module object with the following keys:
+
+|  param name | type  | Scope | Description | Params |
+| :------------ | :------------ | :------ | :------ | :------ |
+|  filterEIDwhenSDA  | function | optional | Filters user EIDs based on SDA | bidrequest |
+|  filterSDAwhenEID  | function | optional | Filters SDA based on configured EIDs | bidrequest  |
+
+# Module Control Configuration
+
+```
+
+pbjs.setConfig({
+    dataController: {
+       filterEIDwhenSDA: ['*']
+       filterSDAwhenEID: ['id5-sync.com'] 
+    }
+});
+
+```