Port Viant: New Adapter

src/main/java/org/prebid/server/bidder/viant/ViantBidder.java

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+package org.prebid.server.bidder.viant;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.iab.openrtb.request.App;
+import com.iab.openrtb.request.BidRequest;
+import com.iab.openrtb.request.Imp;
+import com.iab.openrtb.request.Publisher;
+import com.iab.openrtb.request.Site;
+import com.iab.openrtb.response.Bid;
+import com.iab.openrtb.response.BidResponse;
+import com.iab.openrtb.response.SeatBid;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.prebid.server.bidder.Bidder;
+import org.prebid.server.bidder.model.BidderBid;
+import org.prebid.server.bidder.model.BidderCall;
+import org.prebid.server.bidder.model.BidderError;
+import org.prebid.server.bidder.model.HttpRequest;
+import org.prebid.server.bidder.model.Result;
+import org.prebid.server.exception.PreBidException;
+import org.prebid.server.json.DecodeException;
+import org.prebid.server.json.JacksonMapper;
+import org.prebid.server.proto.openrtb.ext.ExtPrebid;
+import org.prebid.server.proto.openrtb.ext.request.viant.ExtImpViant;
+import org.prebid.server.proto.openrtb.ext.response.BidType;
+import org.prebid.server.util.BidderUtil;
+import org.prebid.server.util.HttpUtil;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+import java.util.Optional;
+
+public class ViantBidder implements Bidder<BidRequest> {
+
+    private static final TypeReference<ExtPrebid<?, ExtImpViant>> TYPE_REFERENCE = new TypeReference<>() {
+    };
+
+    private final String endpointUrl;
+    private final JacksonMapper mapper;
+
+    public ViantBidder(String endpointUrl, JacksonMapper mapper) {
+        this.endpointUrl = HttpUtil.validateUrl(Objects.requireNonNull(endpointUrl));
+        this.mapper = Objects.requireNonNull(mapper);
+    }
+
+    @Override
+    public Result<List<HttpRequest<BidRequest>>> makeHttpRequests(BidRequest request) {
+        String publisherId = null;
+
+        for (Imp imp : request.getImp()) {
+            try {
+                final ExtImpViant extImp = parseImpExt(imp);
+                publisherId = StringUtils.isEmpty(publisherId) ? extImp.getPublisherId() : publisherId;
+            } catch (PreBidException e) {
+                return Result.withError(BidderError.badInput(e.getMessage()));
+            }
+        }
+
+        final BidRequest outgoingRequest = modifyRequest(request, publisherId);
+        return Result.withValue(BidderUtil.defaultRequest(outgoingRequest, endpointUrl, mapper));
+    }
+
+    private ExtImpViant parseImpExt(Imp imp) {
+        try {
+            return mapper.mapper().convertValue(imp.getExt(), TYPE_REFERENCE).getBidder();
+        } catch (IllegalArgumentException e) {
+            throw new PreBidException("Invalid imp.ext for impression %s. Error Information: %s"
+                    .formatted(imp.getId(), e.getMessage()));
+        }
+    }
+
+    private BidRequest modifyRequest(BidRequest request, String publisherId) {
+        final Site site = request.getSite();
+        final App app = request.getApp();
+
+        return request.toBuilder()
+                .site(site != null ? modifySite(site, publisherId) : null)
+                .app(app != null ? modifyApp(app, publisherId) : null)
+                .build();
+    }
+
+    private static Site modifySite(Site site, String publisherId) {
+        return site.toBuilder().publisher(modifyPublisher(site.getPublisher(), publisherId)).build();
+    }
+
+    private static App modifyApp(App app, String publisherId) {
+        return app.toBuilder().publisher(modifyPublisher(app.getPublisher(), publisherId)).build();
+    }
+
+    private static Publisher modifyPublisher(Publisher publisher, String publisherId) {
+        return Optional.ofNullable(publisher)
+                .map(Publisher::toBuilder)
+                .orElseGet(Publisher::builder)
+                .id(publisherId)
+                .build();
+    }
+
+    @Override
+    public Result<List<BidderBid>> makeBids(BidderCall<BidRequest> httpCall, BidRequest bidRequest) {
+        try {
+            final BidResponse bidResponse = mapper.decodeValue(httpCall.getResponse().getBody(), BidResponse.class);
+            final List<BidderError> errors = new ArrayList<>();
+            return Result.of(extractBids(bidResponse, errors), errors);
+        } catch (DecodeException | PreBidException e) {
+            return Result.withError(BidderError.badServerResponse(e.getMessage()));
+        }
+    }
+
+    private List<BidderBid> extractBids(BidResponse bidResponse, List<BidderError> errors) {
+        if (bidResponse == null || CollectionUtils.isEmpty(bidResponse.getSeatbid())) {
+            return Collections.emptyList();
+        }
+        return bidsFromResponse(bidResponse, errors);
+    }
+
+    private static List<BidderBid> bidsFromResponse(BidResponse bidResponse, List<BidderError> errors) {
+        return bidResponse.getSeatbid().stream()
+                .filter(Objects::nonNull)
+                .map(SeatBid::getBid)
+                .filter(Objects::nonNull)
+                .flatMap(Collection::stream)
+                .filter(Objects::nonNull)
+                .map(bid -> makeBidderBid(bid, bidResponse.getCur(), errors))
+                .filter(Objects::nonNull)
+                .toList();
+    }
+
+    private static BidderBid makeBidderBid(Bid bid, String currency, List<BidderError> errors) {
+        final BidType bidType = getBidMediaType(bid, errors);
+        return bidType != null
+                ? BidderBid.of(bid, bidType, currency)
+                : null;
+    }
+
+    private static BidType getBidMediaType(Bid bid, List<BidderError> errors) {
+        final Integer mType = bid.getMtype();
+        return switch (mType) {
+            case 1 -> BidType.banner;
+            case 2 -> BidType.video;
+            case 3 -> BidType.audio;
+            case 4 -> BidType.xNative;
+            case null, default -> {
+                errors.add(BidderError.badServerResponse(
+                        String.format("Unsupported MType %d for bid %s", mType, bid.getId())));
+                yield null;
+            }
+        };
+    }
+}

src/main/java/org/prebid/server/proto/openrtb/ext/request/viant/ExtImpViant.java

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+package org.prebid.server.proto.openrtb.ext.request.viant;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.Value;
+
+@Value(staticConstructor = "of")
+public class ExtImpViant {
+
+    @JsonProperty("publisherId")
+    String publisherId;
+}

src/main/java/org/prebid/server/spring/config/bidder/ViantConfiguration.java

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+package org.prebid.server.spring.config.bidder;
+
+import org.prebid.server.bidder.BidderDeps;
+import org.prebid.server.bidder.viant.ViantBidder;
+import org.prebid.server.json.JacksonMapper;
+import org.prebid.server.spring.config.bidder.model.BidderConfigurationProperties;
+import org.prebid.server.spring.config.bidder.util.BidderDepsAssembler;
+import org.prebid.server.spring.env.YamlPropertySourceFactory;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+
+@Configuration
+@PropertySource(value = "classpath:/bidder-config/viant.yaml", factory = YamlPropertySourceFactory.class)
+public class ViantConfiguration {
+
+    private static final String BIDDER_NAME = "viant";
+
+    @Bean("viantConfigurationProperties")
+    @ConfigurationProperties("adapters.viant")
+    BidderConfigurationProperties configurationProperties() {
+        return new BidderConfigurationProperties();
+    }
+
+    @Bean
+    BidderDeps viantBidderDeps(BidderConfigurationProperties viantConfigurationProperties,
+                               JacksonMapper mapper) {
+
+        return BidderDepsAssembler.forBidder(BIDDER_NAME)
+                .withConfig(viantConfigurationProperties)
+                .bidderCreator(config -> new ViantBidder(config.getEndpoint(), mapper))
+                .assemble();
+    }
+}

src/main/resources/bidder-config/viant.yaml

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+adapters:
+  viant:
+    endpoint: https://bidders-us.adelphic.net/rtb/v25/viant-prebid-server/bidder
+    modifying-vast-xml-allowed: true
+    geoscope:
+      - global
+    endpoint-compression: gzip
+    meta-info:
+      maintainer-email: dist-vps@viantinc.com
+      app-media-types:
+        - banner
+        - video
+        - native
+        - audio
+      site-media-types:
+        - banner
+        - video
+        - native
+        - audio
+      supported-vendors:
+      vendor-id: 1542

src/main/resources/static/bidder-params/viant.json

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+{
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "title": "Viant Adapter Params",
+  "description": "A schema which validates params accepted by the Viant adapter.",
+  "type": "object",
+  "properties": {
+    "publisherId": {
+      "type": "string",
+      "description": "Viant-assigned publisher ID.",
+      "minLength": 1
+    }
+  },
+  "required": [
+    "publisherId"
+  ]
+}