Port Mobkoi: New Adapter

src/main/java/org/prebid/server/bidder/mobkoi/MobkoiBidder.java

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+package org.prebid.server.bidder.mobkoi;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.iab.openrtb.request.BidRequest;
+import com.iab.openrtb.request.Imp;
+import com.iab.openrtb.request.User;
+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.ExtUser;
+import org.prebid.server.proto.openrtb.ext.request.mobkoi.ExtImpMobkoi;
+import org.prebid.server.proto.openrtb.ext.response.BidType;
+import org.prebid.server.util.BidderUtil;
+import org.prebid.server.util.HttpUtil;
+
+import java.net.URI;
+import java.net.URISyntaxException;
+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 MobkoiBidder implements Bidder<BidRequest> {
+
+    private static final TypeReference<ExtPrebid<?, ExtImpMobkoi>> MOBKOI_EXT_TYPE_REFERENCE =
+            new TypeReference<>() {
+            };
+
+    private final String endpointUrl;
+    private final JacksonMapper mapper;
+
+    public MobkoiBidder(String endpointUrl, JacksonMapper mapper) {
+        this.endpointUrl = HttpUtil.validateUrl(Objects.requireNonNull(endpointUrl));
+        this.mapper = Objects.requireNonNull(mapper);
+    }
+
+    @Override
+    public Result<List<HttpRequest<BidRequest>>> makeHttpRequests(BidRequest bidRequest) {
+        final Imp firstImp = bidRequest.getImp().getFirst();
+
+        final ExtImpMobkoi extImpMobkoi;
+        final Imp modifiedFirstImp;
+        try {
+            extImpMobkoi = parseExtImp(firstImp);
+            modifiedFirstImp = modifyImp(firstImp, extImpMobkoi);
+        } catch (PreBidException e) {
+            return Result.withError(BidderError.badInput(e.getMessage()));
+        }
+
+        final String selectedEndpointUrl = resolveEndpoint(extImpMobkoi.getAdServerBaseUrl());
+
+        return Result.withValue(BidderUtil.defaultRequest(
+                modifyBidRequest(bidRequest, modifiedFirstImp),
+                selectedEndpointUrl,
+                mapper));
+    }
+
+    private ExtImpMobkoi parseExtImp(Imp imp) {
+        try {
+            return mapper.mapper().convertValue(imp.getExt(), MOBKOI_EXT_TYPE_REFERENCE).getBidder();
+        } catch (IllegalArgumentException e) {
+            throw new PreBidException(
+                    "Invalid imp.ext for impression id %s. Error Information: %s"
+                            .formatted(imp.getId(), e.getMessage()));
+        }
+    }
+
+    private Imp modifyImp(Imp firstImp, ExtImpMobkoi extImpMobkoi) {
+        if (StringUtils.isNotBlank(firstImp.getTagid())) {
+            return firstImp;
+        }
+
+        if (StringUtils.isNotBlank(extImpMobkoi.getPlacementId())) {
+            return firstImp.toBuilder().tagid(extImpMobkoi.getPlacementId()).build();
+        }
+
+        throw new PreBidException("invalid because it comes with neither request.imp[0].tagId nor "
+                    + "req.imp[0].ext.Bidder.placementId");
+    }
+
+    // url is already validated with `bidder-params` json schema
+    private String resolveEndpoint(String customUri) {
+        if (customUri == null) {
+            return endpointUrl;
+        }
+        try {
+            final URI uri = new URI(customUri);
+            return uri.resolve("/bid").toString();
+        } catch (IllegalArgumentException | URISyntaxException e) {
+            return endpointUrl;
+        }
+    }
+
+    private static BidRequest modifyBidRequest(BidRequest bidRequest, Imp modifiedFirstImp) {
+        final User user = modifyUser(bidRequest.getUser());
+        final List<Imp> imps = updateFirstImpWith(bidRequest.getImp(), modifiedFirstImp);
+        return bidRequest.toBuilder().user(user).imp(imps).build();
+    }
+
+    private static User modifyUser(User user) {
+        return Optional.ofNullable(user)
+                .map(User::getConsent)
+                .map(consent -> ExtUser.builder().consent(consent).build())
+                .map(ext -> user.toBuilder().ext(ext).build())
+                .orElse(user);
+    }
+
+    private static List<Imp> updateFirstImpWith(List<Imp> imps, Imp imp) {
+        final List<Imp> modifiedImps = new ArrayList<>(imps);
+        modifiedImps.set(0, imp);
+        return Collections.unmodifiableList(modifiedImps);
+    }
+
+    @Override
+    public final Result<List<BidderBid>> makeBids(BidderCall<BidRequest> httpCall, BidRequest bidRequest) {
+        try {
+            final BidResponse bidResponse = mapper.decodeValue(httpCall.getResponse().getBody(), BidResponse.class);
+            return Result.withValues(extractBids(bidResponse));
+        } catch (DecodeException | PreBidException e) {
+            return Result.withError(BidderError.badServerResponse(e.getMessage()));
+        }
+    }
+
+    private static List<BidderBid> extractBids(BidResponse bidResponse) {
+        if (bidResponse == null || CollectionUtils.isEmpty(bidResponse.getSeatbid())) {
+            return Collections.emptyList();
+        }
+        return bidsFromResponse(bidResponse);
+    }
+
+    private static List<BidderBid> bidsFromResponse(BidResponse bidResponse) {
+        return bidResponse.getSeatbid()
+                .stream()
+                .filter(Objects::nonNull)
+                .map(SeatBid::getBid)
+                .filter(Objects::nonNull)
+                .flatMap(Collection::stream)
+                .map(bid -> BidderBid.of(bid, BidType.banner, "mobkoi", bidResponse.getCur()))
+                .toList();
+    }
+}

src/main/java/org/prebid/server/proto/openrtb/ext/request/mobkoi/ExtImpMobkoi.java

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

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

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+package org.prebid.server.spring.config.bidder;
+
+import org.prebid.server.bidder.BidderDeps;
+import org.prebid.server.bidder.mobkoi.MobkoiBidder;
+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.config.bidder.util.UsersyncerCreator;
+import org.prebid.server.spring.env.YamlPropertySourceFactory;
+import org.springframework.beans.factory.annotation.Value;
+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;
+
+import javax.validation.constraints.NotBlank;
+
+@Configuration
+@PropertySource(value = "classpath:/bidder-config/mobkoi.yaml", factory = YamlPropertySourceFactory.class)
+public class MobkoiConfiguration {
+
+    private static final String BIDDER_NAME = "mobkoi";
+
+    @Bean("mobkoiConfigurationProperties")
+    @ConfigurationProperties("adapters.mobkoi")
+    BidderConfigurationProperties configurationProperties() {
+        return new BidderConfigurationProperties();
+    }
+
+    @Bean
+    BidderDeps mobkoiBidderDeps(BidderConfigurationProperties mobkoiConfigurationProperties,
+                                @NotBlank @Value("${external-url}") String externalUrl,
+                                JacksonMapper mapper) {
+
+        return BidderDepsAssembler.forBidder(BIDDER_NAME)
+                .withConfig(mobkoiConfigurationProperties)
+                .usersyncerCreator(UsersyncerCreator.create(externalUrl))
+                .bidderCreator(config -> new MobkoiBidder(config.getEndpoint(), mapper))
+                .assemble();
+    }
+}

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

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+adapters:
+  mobkoi:
+    endpoint: "https://pbs.maximus.mobkoi.com/bid"
+    ortb-version: "2.6"
+    meta-info:
+      maintainer-email: platformteam@mobkoi.com
+      app-media-types:
+      site-media-types:
+        - banner
+      supported-vendors:
+      vendor-id: 898

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

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+{
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "title": "Mobkoi Adapter Params",
+  "description": "A schema which validates params accepted by the Mobkoi adapter",
+  "type": "object",
+  "properties": {
+    "placementId": {
+      "type": "string",
+      "description": "Placement ID"
+    },
+    "adServerBaseUrl": {
+      "type": "string",
+      "description": "Mobkoi's ad server url",
+      "pattern": "^https?://[^.]+\\.mobkoi\\.com$"
+    }
+  }
+}