Add Zero Non Deal Bids Warning Only in Debug

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

@@ -273,7 +273,8 @@ private Future<AuctionContext> runAuction(AuctionContext receivedContext) {
                                 storedAuctionResponses,
                                 bidRequest.getImp(),
                                 context.getBidRejectionTrackers()))
-                        .map(auctionParticipations -> dropZeroNonDealBids(auctionParticipations, debugWarnings))
+                        .map(auctionParticipations -> dropZeroNonDealBids(
+                                auctionParticipations, debugWarnings, context.getDebugContext().isDebugEnabled()))
                         .map(auctionParticipations ->
                                 bidsAdjuster.validateAndAdjustBids(auctionParticipations, context, aliases))
                         .map(auctionParticipations -> updateResponsesMetrics(auctionParticipations, account, aliases))
@@ -1269,15 +1270,18 @@ private BidderResponse rejectBidderResponseOrProceed(HookStageExecutionResult<Bi
     }
 
     private List<AuctionParticipation> dropZeroNonDealBids(List<AuctionParticipation> auctionParticipations,
-                                                           List<String> debugWarnings) {
+                                                           List<String> debugWarnings,
+                                                           boolean isDebugEnabled) {
 
         return auctionParticipations.stream()
-                .map(auctionParticipation -> dropZeroNonDealBids(auctionParticipation, debugWarnings))
+                .map(auctionParticipation -> dropZeroNonDealBids(auctionParticipation, debugWarnings, isDebugEnabled))
                 .toList();
     }
 
     private AuctionParticipation dropZeroNonDealBids(AuctionParticipation auctionParticipation,
-                                                     List<String> debugWarnings) {
+                                                     List<String> debugWarnings,
+                                                     boolean isDebugEnabled) {
+
         final BidderResponse bidderResponse = auctionParticipation.getBidderResponse();
         final BidderSeatBid seatBid = bidderResponse.getSeatBid();
         final List<BidderBid> bidderBids = seatBid.getBids();
@@ -1287,8 +1291,11 @@ private AuctionParticipation dropZeroNonDealBids(AuctionParticipation auctionPar
             final Bid bid = bidderBid.getBid();
             if (isZeroNonDealBids(bid.getPrice(), bid.getDealid())) {
                 metrics.updateAdapterRequestErrorMetric(bidderResponse.getBidder(), MetricName.unknown_error);
-                debugWarnings.add("Dropped bid '%s'. Does not contain a positive (or zero if there is a deal) 'price'"
-                        .formatted(bid.getId()));
+                if (isDebugEnabled) {
+                    debugWarnings.add(
+                            "Dropped bid '%s'. Does not contain a positive (or zero if there is a deal) 'price'"
+                            .formatted(bid.getId()));
+                }
             } else {
                 validBids.add(bidderBid);
             }

src/test/groovy/org/prebid/server/functional/model/request/auction/BidRequest.groovy

@@ -5,6 +5,7 @@ import groovy.transform.EqualsAndHashCode
 import groovy.transform.ToString
 import org.prebid.server.functional.model.Currency
 
+import static org.prebid.server.functional.model.request.auction.DebugCondition.ENABLED
 import static org.prebid.server.functional.model.request.auction.DistributionChannel.APP
 import static org.prebid.server.functional.model.request.auction.DistributionChannel.DOOH
 import static org.prebid.server.functional.model.request.auction.DistributionChannel.SITE
@@ -22,7 +23,7 @@ class BidRequest {
     Dooh dooh
     Device device
     User user
-    Integer test
+    DebugCondition test
     Integer at
     Long tmax
     List<String> wseat
@@ -63,7 +64,7 @@ class BidRequest {
             regs = Regs.defaultRegs
             id = UUID.randomUUID()
             tmax = 2500
-            ext = new BidRequestExt(prebid: new Prebid(debug: 1))
+            ext = new BidRequestExt(prebid: new Prebid(debug: ENABLED))
             if (channel == SITE) {
                 site = Site.defaultSite
             }

src/test/groovy/org/prebid/server/functional/model/request/auction/DebugCondition.groovy

@@ -0,0 +1,15 @@
+package org.prebid.server.functional.model.request.auction
+
+import com.fasterxml.jackson.annotation.JsonValue
+
+enum DebugCondition {
+
+    DISABLED(0), ENABLED(1)
+
+    @JsonValue
+    final int value
+
+    private DebugCondition(int value) {
+        this.value = value
+    }
+}

src/test/groovy/org/prebid/server/functional/model/request/auction/Prebid.groovy

@@ -10,7 +10,7 @@ import org.prebid.server.functional.model.bidder.BidderName
 @ToString(includeNames = true, ignoreNulls = true)
 class Prebid {
 
-    Integer debug
+    DebugCondition debug
     Boolean returnAllBidStatus
     Map<String, BidderName> aliases
     Map<String, Integer> aliasgvlids

src/test/groovy/org/prebid/server/functional/tests/BidValidationSpec.groovy

@@ -18,6 +18,8 @@ import spock.lang.PendingFeature
 import java.time.Instant
 
 import static org.prebid.server.functional.model.bidder.BidderName.GENERIC
+import static org.prebid.server.functional.model.request.auction.DebugCondition.DISABLED
+import static org.prebid.server.functional.model.request.auction.DebugCondition.ENABLED
 import static org.prebid.server.functional.model.request.auction.DistributionChannel.DOOH
 import static org.prebid.server.functional.util.HttpUtil.REFERER_HEADER
 
@@ -133,7 +135,7 @@ class BidValidationSpec extends BaseSpec {
             dooh.id = null
             dooh.venueType = null
         }
-        bidDoohRequest.ext.prebid.debug = 1
+        bidDoohRequest.ext.prebid.debug = ENABLED
 
         when: "PBS processes auction request"
         defaultPbsService.sendAuctionRequest(bidDoohRequest)
@@ -148,7 +150,7 @@ class BidValidationSpec extends BaseSpec {
         given: "Default basic BidRequest"
         def bidRequest = BidRequest.defaultBidRequest
         bidRequest.site = new Site(id: null, name: PBSUtils.randomString, page: null)
-        bidRequest.ext.prebid.debug = 1
+        bidRequest.ext.prebid.debug = ENABLED
 
         when: "PBS processes auction request"
         defaultPbsService.sendAuctionRequest(bidRequest)
@@ -159,9 +161,9 @@ class BidValidationSpec extends BaseSpec {
     }
 
     def "PBS should treat bids with 0 price as valid when deal id is present"() {
-        given: "Default basic BidRequest with generic bidder"
+        given: "Default basic BidRequest with generic bidder and enabled debug"
         def bidRequest = BidRequest.defaultBidRequest
-        bidRequest.ext.prebid.debug = 1
+        bidRequest.ext.prebid.debug = ENABLED
 
         and: "Bid response with 0 price bid"
         def bidResponse = BidResponse.getDefaultBidResponse(bidRequest)
@@ -183,16 +185,21 @@ class BidValidationSpec extends BaseSpec {
     }
 
     def "PBS should drop invalid bid and emit debug error when bid price is #bidPrice and deal id is #dealId"() {
-        given: "Default basic BidRequest with generic bidder"
-        def bidRequest = BidRequest.defaultBidRequest
-        bidRequest.ext.prebid.debug = 1
+        given: "Default basic BidRequest with generic bidder and enabled debug"
+        def bidRequest = BidRequest.defaultBidRequest.tap {
+            it.ext.prebid.debug = debug
+            it.test = test
+        }
 
         and: "Bid response"
-        def bidResponse = BidResponse.getDefaultBidResponse(bidRequest)
-        def bid = bidResponse.seatbid.first().bid.first()
-        bid.dealid = dealId
-        bid.price = bidPrice
-        def bidId = bid.id
+        def bidId = PBSUtils.randomString
+        def bidResponse = BidResponse.getDefaultBidResponse(bidRequest).tap {
+            it.seatbid.first.bid.first.tap {
+                id = bidId
+                dealid = dealId
+                price = bidPrice
+            }
+        }
 
         and: "Set bidder response"
         bidder.setResponse(bidRequest.id, bidResponse)
@@ -201,13 +208,61 @@ class BidValidationSpec extends BaseSpec {
         def response = defaultPbsService.sendAuctionRequest(bidRequest)
 
         then: "Invalid bid should be deleted"
-        assert response.seatbid.size() == 0
+        assert !response.seatbid
+        assert !response.ext.seatnonbid
 
         and: "PBS should emit an error"
         assert response.ext?.warnings[ErrorType.PREBID]*.code == [999]
         assert response.ext?.warnings[ErrorType.PREBID]*.message ==
                 ["Dropped bid '$bidId'. Does not contain a positive (or zero if there is a deal) 'price'" as String]
 
+        where:
+        debug    | test     | bidPrice                      | dealId
+        DISABLED | ENABLED  | PBSUtils.randomNegativeNumber | null
+        DISABLED | ENABLED  | PBSUtils.randomNegativeNumber | PBSUtils.randomNumber
+        DISABLED | ENABLED  | 0                             | null
+        DISABLED | ENABLED  | null                          | PBSUtils.randomNumber
+        DISABLED | ENABLED  | null                          | null
+        ENABLED  | DISABLED | PBSUtils.randomNegativeNumber | null
+        ENABLED  | DISABLED | PBSUtils.randomNegativeNumber | PBSUtils.randomNumber
+        ENABLED  | DISABLED | 0                             | null
+        ENABLED  | DISABLED | null                          | PBSUtils.randomNumber
+        ENABLED  | DISABLED | null                          | null
+    }
+
+    def "PBS should drop invalid bid without debug error when request debug disabled and bid price is #bidPrice and deal id is #dealId"() {
+        given: "Default basic BidRequest with generic bidder"
+        def bidRequest = BidRequest.defaultBidRequest.tap {
+            test = DISABLED
+            ext.prebid.debug = DISABLED
+        }
+
+        and: "Bid response"
+        def bidResponse = BidResponse.getDefaultBidResponse(bidRequest).tap {
+            it.seatbid.first.bid.first.tap {
+                dealid = dealId
+                price = bidPrice
+            }
+        }
+
+        and: "Set bidder response"
+        bidder.setResponse(bidRequest.id, bidResponse)
+
+        when: "PBS processes auction request"
+        def response = defaultPbsService.sendAuctionRequest(bidRequest)
+
+        then: "Invalid bid should be deleted"
+        assert !response.seatbid
+        assert !response.ext.seatnonbid
+
+        and: "PBS shouldn't emit an error"
+        assert !response.ext?.warnings
+        assert !response.ext?.warnings
+
+        and: "PBS should call bidder"
+        def bidderRequests = bidder.getBidderRequests(bidResponse.id)
+        assert bidderRequests.size() == 1
+
         where:
         bidPrice                      | dealId
         PBSUtils.randomNegativeNumber | null
@@ -220,7 +275,7 @@ class BidValidationSpec extends BaseSpec {
     def "PBS should only drop invalid bid without discarding whole seat"() {
         given: "Default basic  BidRequest with generic bidder"
         def bidRequest = BidRequest.defaultBidRequest
-        bidRequest.ext.prebid.debug = 1
+        bidRequest.ext.prebid.debug = ENABLED
         bidRequest.ext.prebid.multibid = [new MultiBid(bidder: GENERIC, maxBids: 2)]
 
         and: "Bid response with 2 bids"
@@ -239,14 +294,61 @@ class BidValidationSpec extends BaseSpec {
         when: "PBS processes auction request"
         def response = defaultPbsService.sendAuctionRequest(bidRequest)
 
-        then: "Invalid bids should be deleted"
+        then: "Bid response contains only valid bid"
         assert response.seatbid?.first()?.bid*.id == [validBidId]
 
         and: "PBS should emit an error"
         assert response.ext?.warnings[ErrorType.PREBID]*.code == [999]
         assert response.ext?.warnings[ErrorType.PREBID]*.message ==
                 ["Dropped bid '$invalidBid.id'. Does not contain a positive (or zero if there is a deal) 'price'" as String]
 
+        where:
+        debug | test | bidPrice                      | dealId
+        0     | 1    | PBSUtils.randomNegativeNumber | null
+        0     | 1    | PBSUtils.randomNegativeNumber | PBSUtils.randomNumber
+        0     | 1    | 0                             | null
+        0     | 1    | null                          | PBSUtils.randomNumber
+        0     | 1    | null                          | null
+        1     | 0    | PBSUtils.randomNegativeNumber | null
+        1     | 0    | PBSUtils.randomNegativeNumber | PBSUtils.randomNumber
+        1     | 0    | 0                             | null
+        1     | 0    | null                          | PBSUtils.randomNumber
+        1     | 0    | null                          | null
+    }
+
+    def "PBS should only drop invalid bid without discarding whole seat without debug error when request debug disabled "() {
+        given: "Default basic  BidRequest with generic bidder"
+        def bidRequest = BidRequest.defaultBidRequest.tap {
+            test = DISABLED
+            ext.prebid.tap {
+                debug = DISABLED
+                multibid = [new MultiBid(bidder: GENERIC, maxBids: 2)]
+            }
+        }
+
+        and: "Bid response with 2 bids"
+        def bidResponse = BidResponse.getDefaultBidResponse(bidRequest)
+        bidResponse.seatbid[0].bid << Bid.getDefaultBid(bidRequest.imp.first())
+
+        and: "One of the bids is invalid"
+        def invalidBid = bidResponse.seatbid.first().bid.first()
+        invalidBid.dealid = dealId
+        invalidBid.price = bidPrice
+        def validBidId = bidResponse.seatbid.first().bid.last().id
+
+        and: "Set bidder response"
+        bidder.setResponse(bidRequest.id, bidResponse)
+
+        when: "PBS processes auction request"
+        def response = defaultPbsService.sendAuctionRequest(bidRequest)
+
+        then: "Bid response contains only valid bid"
+        assert response.seatbid?.first()?.bid*.id == [validBidId]
+
+        and: "PBS shouldn't emit an error"
+        assert !response.ext?.warnings
+        assert !response.ext?.warnings
+
         where:
         bidPrice                      | dealId
         PBSUtils.randomNegativeNumber | null
@@ -257,10 +359,7 @@ class BidValidationSpec extends BaseSpec {
     }
 
     def "PBS should update 'adapter.generic.requests.bid_validation' metric when bid validation error appears"() {
-        given: "Initial 'adapter.generic.requests.bid_validation' metric value"
-        def initialMetricValue = getCurrentMetricValue(defaultPbsService, "adapter.generic.requests.bid_validation")
-
-        and: "Bid request"
+        given: "Bid request"
         def bidRequest = BidRequest.defaultBidRequest
 
         and: "Set invalid bid response"