Core: Transition PAAPI parameters

src/main/java/org/prebid/server/auction/ExchangeService.java

@@ -273,7 +273,7 @@ private Future<AuctionContext> runAuction(AuctionContext receivedContext) {
                         .map(auctionParticipations -> updateResponsesMetrics(auctionParticipations, account, aliases))
                         .map(context::with))
                 // produce response from bidder results
-                .compose(context -> bidResponseCreator.create(context, cacheInfo, bidderToMultiBid)
+                .compose(context -> bidResponseCreator.create(context, cacheInfo, aliases, bidderToMultiBid)
                         .map(bidResponse -> criteriaLogManager.traceResponse(
                                 logger,
                                 bidResponse,

src/main/java/org/prebid/server/auction/ImpAdjuster.java

@@ -1,10 +1,13 @@
 package org.prebid.server.auction;
 
 import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.IntNode;
 import com.fasterxml.jackson.databind.node.ObjectNode;
 import com.iab.openrtb.request.Imp;
 import org.prebid.server.json.JacksonMapper;
 import org.prebid.server.json.JsonMerger;
+import org.prebid.server.util.StreamUtil;
 import org.prebid.server.validation.ImpValidator;
 
 import java.util.Iterator;
@@ -15,6 +18,8 @@
 public class ImpAdjuster {
 
     private static final String IMP_EXT = "ext";
+    private static final String EXT_AE = "ae";
+    private static final String EXT_IGS = "igs";
     private static final String EXT_PREBID = "prebid";
     private static final String EXT_PREBID_BIDDER = "bidder";
     private static final String EXT_PREBID_IMP = "imp";
@@ -33,6 +38,8 @@ public ImpAdjuster(JacksonMapper jacksonMapper,
     }
 
     public Imp adjust(Imp originalImp, String bidder, BidderAliases bidderAliases, List<String> debugMessages) {
+        setAeParams(originalImp.getExt());
+
         final JsonNode impExtPrebidImp = bidderParamsFromImpExtPrebidImp(originalImp.getExt());
         if (impExtPrebidImp == null) {
             return originalImp;
@@ -65,6 +72,28 @@ public Imp adjust(Imp originalImp, String bidder, BidderAliases bidderAliases, L
         }
     }
 
+    private void setAeParams(ObjectNode ext) {
+        final int extAe = Optional.ofNullable(ext)
+                .map(extNode -> extNode.get(EXT_AE))
+                .filter(JsonNode::isInt)
+                .map(JsonNode::asInt)
+                .orElse(-1);
+
+        final boolean extIgsAePresent = Optional.ofNullable(ext)
+                .map(extNode -> extNode.get(EXT_IGS))
+                .filter(JsonNode::isArray)
+                .stream()
+                .flatMap(extNode -> StreamUtil.asStream(extNode.spliterator()))
+                .filter(Objects::nonNull)
+                .anyMatch(igsElementNode -> igsElementNode.has(EXT_AE));
+
+        if (!extIgsAePresent && (extAe == 0 || extAe == 1)) {
+            final ArrayNode extIgs = jacksonMapper.mapper().createArrayNode();
+            extIgs.add(jacksonMapper.mapper().createObjectNode().set(EXT_AE, IntNode.valueOf(extAe)));
+            ext.set(EXT_IGS, extIgs);
+        }
+    }
+
     private static JsonNode bidderParamsFromImpExtPrebidImp(ObjectNode ext) {
         return Optional.ofNullable(ext)
                 .map(extNode -> extNode.get(EXT_PREBID))

src/main/java/org/prebid/server/auction/model/BidRejectionTracker.java

@@ -47,10 +47,6 @@ public BidRejectionTracker(String bidder, Set<String> involvedImpIds, double log
         rejectedBids = new HashMap<>();
     }
 
-    /**
-     * Restores ONLY imps from rejection, rejected bids are preserved for analytics.
-     * A bid can be rejected only once.
-     */
     public void succeed(Collection<BidderBid> bids) {
         bids.stream()
                 .map(BidderBid::getBid)
@@ -124,10 +120,6 @@ public void rejectAllImps(BidRejectionReason reason) {
         involvedImpIds.forEach(impId -> rejectImp(impId, reason));
     }
 
-    /**
-     * If an impression has at least one valid bid, it's not considered rejected.
-     * If no valid bids are returned for the impression, only the first one rejected reason will be returned
-     */
     public Map<String, BidRejectionReason> getRejectedImps() {
         final Map<String, BidRejectionReason> rejectedImpIds = new HashMap<>();
         for (String impId : involvedImpIds) {
@@ -144,9 +136,6 @@ public Map<String, BidRejectionReason> getRejectedImps() {
         return rejectedImpIds;
     }
 
-    /**
-     * Bid is absent for the non-bid code from 0 to 299
-     */
     public Map<String, List<Pair<BidderBid, BidRejectionReason>>> getRejectedBids() {
         final Map<String, List<Pair<BidderBid, BidRejectionReason>>> missingImpIds = new HashMap<>();
         for (String impId : involvedImpIds) {

src/main/java/org/prebid/server/auction/model/PaaFormat.java

@@ -0,0 +1,12 @@
+package org.prebid.server.auction.model;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public enum PaaFormat {
+
+    @JsonProperty("original")
+    ORIGINAL,
+
+    @JsonProperty("iab")
+    IAB
+}

src/main/java/org/prebid/server/bidder/HttpBidderRequester.java

@@ -31,6 +31,7 @@
 import org.prebid.server.log.LoggerFactory;
 import org.prebid.server.model.CaseInsensitiveMultiMap;
 import org.prebid.server.proto.openrtb.ext.response.ExtHttpCall;
+import org.prebid.server.proto.openrtb.ext.response.ExtIgi;
 import org.prebid.server.proto.openrtb.ext.response.FledgeAuctionConfig;
 import org.prebid.server.util.HttpUtil;
 import org.prebid.server.vertx.httpclient.HttpClient;
@@ -248,7 +249,7 @@ private static byte[] gzip(byte[] value) {
      */
     private <T> Future<BidderCall<T>> failResponse(Throwable exception, HttpRequest<T> httpRequest) {
         conditionalLogger.warn("Error occurred while sending HTTP request to a bidder url: %s with message: %s"
-                        .formatted(httpRequest.getUri(), exception.getMessage()), logSamplingRate);
+                .formatted(httpRequest.getUri(), exception.getMessage()), logSamplingRate);
         logger.debug("Error occurred while sending HTTP request to a bidder url: {}",
                 exception, httpRequest.getUri());
 
@@ -346,6 +347,7 @@ private static class ResultBuilder<T> {
         private final Map<HttpRequest<T>, BidderCall<T>> bidderCallsRecorded = new HashMap<>();
         private final List<BidderBid> bidsRecorded = new ArrayList<>();
         private final List<BidderError> errorsRecorded = new ArrayList<>();
+        private final List<ExtIgi> igiRecorded = new ArrayList<>();
         private final List<FledgeAuctionConfig> fledgeRecorded = new ArrayList<>();
 
         ResultBuilder(List<HttpRequest<T>> httpRequests,
@@ -366,6 +368,7 @@ void addHttpCall(BidderCall<T> bidderCall, CompositeBidderResponse bidderRespons
             handleBids(bidderResponse);
             handleBidderErrors(bidderResponse);
             handleBidderCallError(bidderCall);
+            handleIgis(bidderResponse);
             handleFledgeAuctionConfigs(bidderResponse);
         }
 
@@ -429,6 +432,12 @@ private void handleFledgeAuctionConfigs(CompositeBidderResponse bidderResponse)
                     .ifPresent(fledgeRecorded::addAll);
         }
 
+        private void handleIgis(CompositeBidderResponse bidderResponse) {
+            Optional.ofNullable(bidderResponse)
+                    .map(CompositeBidderResponse::getIgi)
+                    .ifPresent(igiRecorded::addAll);
+        }
+
         BidderSeatBid toBidderSeatBid(boolean debugEnabled) {
             final List<BidderCall<T>> httpCalls = new ArrayList<>(bidderCallsRecorded.values());
             httpRequests.stream()
@@ -446,6 +455,7 @@ BidderSeatBid toBidderSeatBid(boolean debugEnabled) {
                     .bids(bidsRecorded)
                     .httpCalls(extHttpCalls)
                     .errors(errors)
+                    .igi(igiRecorded)
                     .fledgeAuctionConfigs(fledgeRecorded)
                     .build();
         }

src/main/java/org/prebid/server/bidder/consumable/ConsumableBidder.java

@@ -121,9 +121,12 @@ public Result<List<BidderBid>> makeBids(BidderCall<BidRequest> httpCall, BidRequ
     public CompositeBidderResponse makeBidderResponse(BidderCall<BidRequest> httpCall, BidRequest bidRequest) {
         try {
             final BidResponse bidResponse = mapper.decodeValue(httpCall.getResponse().getBody(), BidResponse.class);
-            final List<BidderError> bidderErrors = new ArrayList<>();
-            return CompositeBidderResponse.builder().bids(extractConsumableBids(bidRequest, bidResponse, bidderErrors))
-                    .errors(bidderErrors).build();
+            final List<BidderError> errors = new ArrayList<>();
+
+            return CompositeBidderResponse.builder()
+                    .bids(extractConsumableBids(bidRequest, bidResponse, errors))
+                    .errors(errors)
+                    .build();
         } catch (DecodeException e) {
             return CompositeBidderResponse.withError(BidderError.badServerResponse(e.getMessage()));
         }

src/main/java/org/prebid/server/bidder/criteo/CriteoBidder.java

@@ -19,7 +19,7 @@
 import org.prebid.server.proto.openrtb.ext.response.BidType;
 import org.prebid.server.proto.openrtb.ext.response.ExtBidPrebid;
 import org.prebid.server.proto.openrtb.ext.response.ExtBidPrebidMeta;
-import org.prebid.server.proto.openrtb.ext.response.FledgeAuctionConfig;
+import org.prebid.server.proto.openrtb.ext.response.ExtIgi;
 import org.prebid.server.util.BidderUtil;
 import org.prebid.server.util.HttpUtil;
 
@@ -31,7 +31,6 @@
 
 public class CriteoBidder implements Bidder<BidRequest> {
 
-    private static final String BIDDER_NAME = "criteo";
     private final String endpointUrl;
     private final JacksonMapper mapper;
 
@@ -55,9 +54,12 @@ public Result<List<BidderBid>> makeBids(BidderCall<BidRequest> httpCall, BidRequ
     public CompositeBidderResponse makeBidderResponse(BidderCall<BidRequest> httpCall, BidRequest bidRequest) {
         try {
             final CriteoBidResponse bidResponse = mapper.decodeValue(
-                    httpCall.getResponse().getBody(),
-                    CriteoBidResponse.class);
-            return CompositeBidderResponse.withBids(extractBids(bidResponse), extractFledge(bidResponse));
+                    httpCall.getResponse().getBody(), CriteoBidResponse.class);
+
+            return CompositeBidderResponse.builder()
+                    .bids(extractBids(bidResponse))
+                    .igi(extractIgi(bidResponse))
+                    .build();
         } catch (DecodeException | PreBidException e) {
             return CompositeBidderResponse.withError(BidderError.badServerResponse(e.getMessage()));
         }
@@ -105,21 +107,11 @@ private ObjectNode makeExt(String networkName) {
                 .build());
     }
 
-    private static List<FledgeAuctionConfig> extractFledge(CriteoBidResponse bidResponse) {
-        final List<FledgeAuctionConfig> fledgeConfigs = Optional.ofNullable(bidResponse)
+    private static List<ExtIgi> extractIgi(CriteoBidResponse bidResponse) {
+        return Optional.ofNullable(bidResponse)
                 .map(CriteoBidResponse::getExt)
                 .map(CriteoExtBidResponse::getIgi)
                 .filter(CollectionUtils::isNotEmpty)
-                .orElse(Collections.emptyList())
-                .stream()
-                .filter(igi -> CollectionUtils.isNotEmpty(igi.getIgs()) && igi.getIgs().getFirst() != null)
-                .map(igi -> FledgeAuctionConfig.builder()
-                        .impId(igi.getImpId())
-                        .bidder(BIDDER_NAME)
-                        .config(igi.getIgs().getFirst().getConfig())
-                        .build())
-                .toList();
-
-        return CollectionUtils.isEmpty(fledgeConfigs) ? null : fledgeConfigs;
+                .orElse(Collections.emptyList());
     }
 }

src/main/java/org/prebid/server/bidder/criteo/CriteoExtBidResponse.java

@@ -1,11 +1,12 @@
 package org.prebid.server.bidder.criteo;
 
 import lombok.Value;
+import org.prebid.server.proto.openrtb.ext.response.ExtIgi;
 
 import java.util.List;
 
 @Value(staticConstructor = "of")
 public class CriteoExtBidResponse {
 
-    List<CriteoIgiExtBidResponse> igi;
+    List<ExtIgi> igi;
 }

src/main/java/org/prebid/server/bidder/ix/IxBidder.java

@@ -42,7 +42,8 @@
 import org.prebid.server.proto.openrtb.ext.request.ix.ExtImpIx;
 import org.prebid.server.proto.openrtb.ext.response.BidType;
 import org.prebid.server.proto.openrtb.ext.response.ExtBidPrebidVideo;
-import org.prebid.server.proto.openrtb.ext.response.FledgeAuctionConfig;
+import org.prebid.server.proto.openrtb.ext.response.ExtIgi;
+import org.prebid.server.proto.openrtb.ext.response.ExtIgiIgs;
 import org.prebid.server.util.BidderUtil;
 import org.prebid.server.util.HttpUtil;
 import org.prebid.server.util.ObjectUtil;
@@ -233,11 +234,12 @@ public Result<List<BidderBid>> makeBids(BidderCall<BidRequest> httpCall, BidRequ
     public CompositeBidderResponse makeBidderResponse(BidderCall<BidRequest> httpCall, BidRequest bidRequest) {
         try {
             final IxBidResponse bidResponse = mapper.decodeValue(httpCall.getResponse().getBody(), IxBidResponse.class);
-            final List<BidderError> bidderErrors = new ArrayList<>();
+            final List<BidderError> errors = new ArrayList<>();
+
             return CompositeBidderResponse.builder()
-                    .bids(extractBids(bidRequest, bidResponse, bidderErrors))
-                    .fledgeAuctionConfigs(extractFledge(bidResponse))
-                    .errors(bidderErrors)
+                    .bids(extractBids(bidRequest, bidResponse, errors))
+                    .igi(extractIgi(bidResponse))
+                    .errors(errors)
                     .build();
         } catch (DecodeException e) {
             return CompositeBidderResponse.withError(BidderError.badServerResponse(e.getMessage()));
@@ -406,17 +408,16 @@ private static ExtBidPrebidVideo videoInfo(ExtBidPrebidVideo extBidPrebidVideo)
                 : null;
     }
 
-    private List<FledgeAuctionConfig> extractFledge(IxBidResponse bidResponse) {
-        return Optional.ofNullable(bidResponse)
+    private List<ExtIgi> extractIgi(IxBidResponse bidResponse) {
+        final List<ExtIgiIgs> igs = Optional.ofNullable(bidResponse)
                 .map(IxBidResponse::getExt)
                 .map(IxExtBidResponse::getProtectedAudienceAuctionConfigs)
                 .orElse(Collections.emptyList())
                 .stream()
                 .filter(Objects::nonNull)
-                .map(ixAuctionConfig -> FledgeAuctionConfig.builder()
-                        .impId(ixAuctionConfig.getBidId())
-                        .config(ixAuctionConfig.getConfig())
-                        .build())
+                .map(config -> ExtIgiIgs.builder().impId(config.getBidId()).config(config.getConfig()).build())
                 .toList();
+
+        return igs.isEmpty() ? null : Collections.singletonList(ExtIgi.builder().igs(igs).build());
     }
 }

src/main/java/org/prebid/server/bidder/medianet/MedianetBidder.java

@@ -19,7 +19,8 @@
 import org.prebid.server.json.DecodeException;
 import org.prebid.server.json.JacksonMapper;
 import org.prebid.server.proto.openrtb.ext.response.BidType;
-import org.prebid.server.proto.openrtb.ext.response.FledgeAuctionConfig;
+import org.prebid.server.proto.openrtb.ext.response.ExtIgi;
+import org.prebid.server.proto.openrtb.ext.response.ExtIgiIgs;
 import org.prebid.server.util.BidderUtil;
 import org.prebid.server.util.HttpUtil;
 
@@ -64,12 +65,9 @@ public final CompositeBidderResponse makeBidderResponse(BidderCall<BidRequest> h
         }
 
         final List<BidderError> errors = new ArrayList<>();
-        final List<BidderBid> bids = extractBids(httpCall.getRequest().getPayload(), bidResponse, errors);
-        final List<FledgeAuctionConfig> fledgeAuctionConfigs = extractFledge(bidResponse);
-
         return CompositeBidderResponse.builder()
-                .bids(bids)
-                .fledgeAuctionConfigs(fledgeAuctionConfigs)
+                .bids(extractBids(httpCall.getRequest().getPayload(), bidResponse, errors))
+                .igi(extractIgi(bidResponse))
                 .errors(errors)
                 .build();
     }
@@ -138,15 +136,17 @@ private static BidType resolveBidTypeFromImpId(String impId, List<Imp> imps) {
         return BidType.banner;
     }
 
-    private static List<FledgeAuctionConfig> extractFledge(MedianetBidResponse bidResponse) {
-        return Optional.ofNullable(bidResponse)
+    private static List<ExtIgi> extractIgi(MedianetBidResponse bidResponse) {
+        final List<ExtIgiIgs> igs = Optional.ofNullable(bidResponse)
                 .map(MedianetBidResponse::getExt)
                 .map(MedianetBidResponseExt::getIgi)
                 .orElse(Collections.emptyList())
                 .stream()
                 .map(InterestGroupAuctionIntent::getIgs)
                 .flatMap(Collection::stream)
-                .map(e -> FledgeAuctionConfig.builder().impId(e.getImpId()).config(e.getConfig()).build())
+                .map(igiIgs -> ExtIgiIgs.builder().impId(igiIgs.getImpId()).config(igiIgs.getConfig()).build())
                 .toList();
+
+        return igs.isEmpty() ? null : Collections.singletonList(ExtIgi.builder().igs(igs).build());
     }
 }

src/main/java/org/prebid/server/bidder/model/BidderSeatBid.java

@@ -4,6 +4,7 @@
 import lombok.Value;
 import org.prebid.server.bidder.Bidder;
 import org.prebid.server.proto.openrtb.ext.response.ExtHttpCall;
+import org.prebid.server.proto.openrtb.ext.response.ExtIgi;
 import org.prebid.server.proto.openrtb.ext.response.FledgeAuctionConfig;
 
 import java.util.Collections;
@@ -53,9 +54,13 @@ public class BidderSeatBid {
     @Builder.Default
     List<BidderError> warnings = Collections.emptyList();
 
+    @Deprecated
     @Builder.Default
     List<FledgeAuctionConfig> fledgeAuctionConfigs = Collections.emptyList();
 
+    @Builder.Default
+    List<ExtIgi> igi = Collections.emptyList();
+
     public BidderSeatBid with(List<BidderBid> bids) {
         return toBuilder().bids(bids).build();
     }