Relay Bid Adapter : Initial Release (#10197)

* Add Relay Bid Adapter.

* Fix imports and lint violations.

* Implement PR feedback.

modules/relayBidAdapter.js

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+import { isNumber, logMessage } from '../src/utils.js';
+import { registerBidder } from '../src/adapters/bidderFactory.js';
+import { config } from '../src/config.js';
+import { BANNER, VIDEO, NATIVE } from '../src/mediaTypes.js';
+import { ortbConverter } from '../libraries/ortbConverter/converter.js'
+
+const BIDDER_CODE = 'relay';
+const METHOD = 'POST';
+const ENDPOINT_URL = 'https://e.relay.bid/p/openrtb2';
+
+// The default impl from the prebid docs.
+const CONVERTER =
+  ortbConverter({
+    context: {
+      netRevenue: true,
+      ttl: 30
+    }
+  });
+
+function buildRequests(bidRequests, bidderRequest) {
+  const prebidVersion = config.getConfig('prebid_version') || 'v8.1.0';
+  // Group bids by accountId param
+  const groupedByAccountId = bidRequests.reduce((accu, item) => {
+    const accountId = ((item || {}).params || {}).accountId;
+    if (!accu[accountId]) { accu[accountId] = []; };
+    accu[accountId].push(item);
+    return accu;
+  }, {});
+  // Send one overall request with all grouped bids per accountId
+  let reqs = [];
+  for (const [accountId, accountBidRequests] of Object.entries(groupedByAccountId)) {
+    const url = `${ENDPOINT_URL}?a=${accountId}&pb=1&pbv=${prebidVersion}`;
+    const data = CONVERTER.toORTB({ bidRequests: accountBidRequests, bidderRequest })
+    const req = {
+      method: METHOD,
+      url,
+      data
+    };
+    reqs.push(req);
+  }
+  return reqs;
+};
+
+function interpretResponse(response, request) {
+  return CONVERTER.fromORTB({ response: response.body, request: request.data }).bids;
+};
+
+function isBidRequestValid(bid) {
+  return isNumber((bid.params || {}).accountId);
+};
+
+function getUserSyncs(syncOptions, serverResponses, gdprConsent, uspConsent) {
+  let syncs = []
+  for (const response of serverResponses) {
+    const responseSyncs = ((((response || {}).body || {}).ext || {}).user_syncs || [])
+    // Relay returns user_syncs in the format expected by prebid. If for any
+    // reason the request/response failed to properly capture the GDPR settings
+    // -- fallback to those identified by Prebid.
+    for (const sync of responseSyncs) {
+      const syncUrl = new URL(sync.url);
+      const missingGdpr = !syncUrl.searchParams.has('gdpr');
+      const missingGdprConsent = !syncUrl.searchParams.has('gdpr_consent');
+      if (missingGdpr) {
+        syncUrl.searchParams.set('gdpr', Number(gdprConsent.gdprApplies))
+        sync.url = syncUrl.toString();
+      }
+      if (missingGdprConsent) {
+        syncUrl.searchParams.set('gdpr_consent', gdprConsent.consentString);
+        sync.url = syncUrl.toString();
+      }
+      if (syncOptions.iframeEnabled && sync.type === 'iframe') {
+        syncs.push(sync);
+      } else if (syncOptions.pixelEnabled && sync.type === 'image') {
+        syncs.push(sync);
+      }
+    }
+  }
+
+  return syncs;
+}
+
+export const spec = {
+  code: BIDDER_CODE,
+  isBidRequestValid,
+  buildRequests,
+  interpretResponse,
+  getUserSyncs,
+  onTimeout: function (timeoutData) {
+    logMessage('Timeout: ', timeoutData);
+  },
+  onBidWon: function (bid) {
+    logMessage('Bid won: ', bid);
+  },
+  onBidderError: function ({ error, bidderRequest }) {
+    logMessage('Error: ', error, bidderRequest);
+  },
+  supportedMediaTypes: [BANNER, VIDEO, NATIVE]
+}
+registerBidder(spec);

modules/relayBidAdapter.md

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+# Overview
+
+```
+Module Name: Relay Bid Adapter
+Module Type: Bid Adapter
+Maintainer: [email protected]
+```
+
+# Description
+
+Connects to Relay exchange API for bids.
+Supports Banner, Video and Native.
+
+# Test Parameters
+
+```
+var adUnits = [
+  // Banner with minimal bid configuration
+  {
+    code: 'minimal',
+    mediaTypes: {
+      banner: {
+        sizes: [[300, 250]]
+      }
+    },
+    bids: [
+      {
+        bidder: 'relay',
+        params: {
+          accountId: 1234
+        },
+        ortb2imp: {
+          ext: {
+            relay: {
+              bidders: {
+                bidderA: {
+                  param: 1234
+                }
+              }
+            }
+          }
+        }
+      }
+    ]
+  },
+  // Minimal video
+  {
+    code: 'video-minimal',
+    mediaTypes: {
+      video: {
+        maxduration: 30,
+        api: [1, 3],
+        mimes: ['video/mp4'],
+        placement: 3,
+        protocols: [2,3,5,6]
+      }
+    },
+    bids: [
+      {
+        bidder: 'relay',
+        params: {
+          accountId: 1234
+        },
+        ortb2imp: {
+          ext: {
+            relay: {
+              bidders: {
+                bidderA: {
+                  param: 'example'
+                }
+              }
+            }
+          }
+        }
+      }
+    ]
+  }
+];
+```

test/spec/modules/relayBidAdapter_spec.js

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+import { expect } from 'chai';
+import { spec } from '../../../modules/relayBidAdapter.js';
+import { BANNER, VIDEO, NATIVE } from '../../../src/mediaTypes.js';
+import { getUniqueIdentifierStr } from '../../../src/utils.js';
+
+const bidder = 'relay'
+const endpoint = 'https://e.relay.bid/p/openrtb2';
+
+describe('RelayBidAdapter', function () {
+  const bids = [
+    {
+      bidId: getUniqueIdentifierStr(),
+      bidder,
+      mediaTypes: { [BANNER]: { sizes: [[300, 250]] } },
+      params: {
+        accountId: 15000,
+      },
+      ortb2Imp: {
+        ext: {
+          relay: {
+            bidders: {
+              bidderA: {
+                theId: 'abc123'
+              },
+              bidderB: {
+                theId: 'xyz789'
+              }
+            }
+          }
+        }
+      }
+    },
+    {
+      bidId: getUniqueIdentifierStr(),
+      bidder,
+      mediaTypes: { [BANNER]: { sizes: [[300, 250]] } },
+      params: {
+        accountId: 30000,
+      },
+      ortb2Imp: {
+        ext: {
+          relay: {
+            bidders: {
+              bidderA: {
+                theId: 'def456'
+              },
+              bidderB: {
+                theId: 'uvw101112'
+              }
+            }
+          }
+        }
+      }
+    }
+  ];
+
+  const invalidBid = {
+    bidId: getUniqueIdentifierStr(),
+    bidder: bidder,
+    mediaTypes: {
+      [BANNER]: {
+        sizes: [[300, 250]]
+      }
+    },
+    params: {}
+  }
+
+  const bidderRequest = {};
+
+  describe('isBidRequestValid', function () {
+    it('Valid bids have a params.accountId.', function () {
+      expect(spec.isBidRequestValid(bids[0])).to.be.true;
+    });
+    it('Invalid bids do not have a params.accountId.', function () {
+      expect(spec.isBidRequestValid(invalidBid)).to.be.false;
+    });
+  });
+
+  describe('buildRequests', function () {
+    const requests = spec.buildRequests(bids, bidderRequest);
+    const firstRequest = requests[0];
+    const secondRequest = requests[1];
+
+    it('Creates two requests', function () {
+      expect(firstRequest).to.exist;
+      expect(firstRequest.data).to.exist;
+      expect(firstRequest.method).to.exist;
+      expect(firstRequest.method).to.equal('POST');
+      expect(firstRequest.url).to.exist;
+      expect(firstRequest.url).to.equal(`${endpoint}?a=15000&pb=1&pbv=v8.1.0`);
+
+      expect(secondRequest).to.exist;
+      expect(secondRequest.data).to.exist;
+      expect(secondRequest.method).to.exist;
+      expect(secondRequest.method).to.equal('POST');
+      expect(secondRequest.url).to.exist;
+      expect(secondRequest.url).to.equal(`${endpoint}?a=30000&pb=1&pbv=v8.1.0`);
+    });
+
+    it('Does not generate requests when there are no bids', function () {
+      const request = spec.buildRequests([], bidderRequest);
+      expect(request).to.be.an('array').that.is.empty;
+    });
+  });
+
+  describe('getUserSyncs', function () {
+    it('Uses Prebid consent values if incoming sync URLs lack consent.', function () {
+      const syncOpts = {
+        iframeEnabled: true,
+        pixelEnabled: true
+      };
+      const test_gdpr_applies = true;
+      const test_gdpr_consent_str = 'TEST_GDPR_CONSENT_STRING';
+      const responses = [{
+        body: {
+          ext: {
+            user_syncs: [
+              { type: 'image', url: 'https://image-example.com' },
+              { type: 'iframe', url: 'https://iframe-example.com' }
+            ]
+          }
+        }
+      }];
+
+      const sync_urls = spec.getUserSyncs(syncOpts, responses, { gdprApplies: test_gdpr_applies, consentString: test_gdpr_consent_str });
+      expect(sync_urls).to.be.an('array');
+      expect(sync_urls[0].url).to.equal('https://image-example.com/?gdpr=1&gdpr_consent=TEST_GDPR_CONSENT_STRING');
+      expect(sync_urls[1].url).to.equal('https://iframe-example.com/?gdpr=1&gdpr_consent=TEST_GDPR_CONSENT_STRING');
+    });
+  });
+});