New Afront Adapter

src/main/java/org/prebid/server/bidder/afront/AfrontBidder.java

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+package org.prebid.server.bidder.afront;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.iab.openrtb.request.BidRequest;
+import com.iab.openrtb.request.Device;
+import com.iab.openrtb.request.Imp;
+import com.iab.openrtb.response.BidResponse;
+import com.iab.openrtb.response.SeatBid;
+import io.vertx.core.MultiMap;
+import org.apache.commons.collections4.CollectionUtils;
+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.afront.ExtImpAfront;
+import org.prebid.server.proto.openrtb.ext.response.BidType;
+import org.prebid.server.util.BidderUtil;
+import org.prebid.server.util.HttpUtil;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+public class AfrontBidder implements Bidder<BidRequest> {
+
+    private static final TypeReference<ExtPrebid<?, ExtImpAfront>> TYPE_REFERENCE = new TypeReference<>() {
+    };
+
+    private static final String ACCOUNT_ID_MACRO = "{{AccountId}}";
+    private static final String SOURCE_ID_MACRO = "{{SourceId}}";
+
+    private final String endpointUrl;
+    private final JacksonMapper mapper;
+
+    public AfrontBidder(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) {
+        final ExtImpAfront extImp;
+        try {
+            extImp = parseImpExt(request.getImp().getFirst());
+        } catch (PreBidException e) {
+            return Result.withError(BidderError.badInput(e.getMessage()));
+        }
+
+        final String resolvedEndpoint = resolveEndpoint(extImp);
+        final BidRequest outgoingRequest = modifyRequest(request);
+        final HttpRequest<BidRequest> httpRequest =
+                BidderUtil.defaultRequest(outgoingRequest, makeHeaders(request.getDevice()), resolvedEndpoint, mapper);
+
+        return Result.withValue(httpRequest);
+    }
+
+    private ExtImpAfront parseImpExt(Imp imp) {
+        try {
+            return mapper.mapper().convertValue(imp.getExt(), TYPE_REFERENCE).getBidder();
+        } catch (IllegalArgumentException e) {
+            throw new PreBidException("ext.bidder not provided");
+        }
+    }
+
+    private String resolveEndpoint(ExtImpAfront extImp) {
+        return endpointUrl
+                .replace(ACCOUNT_ID_MACRO, HttpUtil.encodeUrl(extImp.getAccountId()))
+                .replace(SOURCE_ID_MACRO, HttpUtil.encodeUrl(extImp.getSourceId()));
+    }
+
+    private static BidRequest modifyRequest(BidRequest request) {
+        final List<Imp> modifiedImps = request.getImp().stream()
+                .map(imp -> imp.toBuilder().ext(null).build())
+                .toList();
+
+        return request.toBuilder()
+                .imp(modifiedImps)
+                .build();
+    }
+
+    private static MultiMap makeHeaders(Device device) {
+        final MultiMap headers = HttpUtil.headers()
+                .add(HttpUtil.X_OPENRTB_VERSION_HEADER, "2.5");
+
+        if (device != null) {
+            HttpUtil.addHeaderIfValueIsNotEmpty(headers, HttpUtil.X_FORWARDED_FOR_HEADER, device.getIpv6());
+            HttpUtil.addHeaderIfValueIsNotEmpty(headers, HttpUtil.X_FORWARDED_FOR_HEADER, device.getIp());
+            HttpUtil.addHeaderIfValueIsNotEmpty(headers, HttpUtil.USER_AGENT_HEADER, device.getUa());
+        }
+
+        return headers;
+    }
+
+    @Override
+    public Result<List<BidderBid>> makeBids(BidderCall<BidRequest> httpCall, BidRequest bidRequest) {
+        try {
+            final BidResponse bidResponse = mapper.decodeValue(httpCall.getResponse().getBody(), BidResponse.class);
+            return Result.withValues(extractBids(bidRequest, bidResponse));
+        } catch (DecodeException e) {
+            return Result.withError(BidderError.badServerResponse(e.getMessage()));
+        }
+    }
+
+    private static List<BidderBid> extractBids(BidRequest bidRequest, BidResponse bidResponse) {
+        if (bidResponse == null || CollectionUtils.isEmpty(bidResponse.getSeatbid())) {
+            return Collections.emptyList();
+        }
+        return bidsFromResponse(bidRequest, bidResponse);
+    }
+
+    private static List<BidderBid> bidsFromResponse(BidRequest bidRequest, BidResponse bidResponse) {
+        final Map<String, Imp> imps = bidRequest.getImp().stream()
+                .collect(Collectors.toMap(Imp::getId, Function.identity()));
+
+        return bidResponse.getSeatbid().stream()
+                .filter(Objects::nonNull)
+                .map(SeatBid::getBid)
+                .filter(Objects::nonNull)
+                .flatMap(Collection::stream)
+                .filter(Objects::nonNull)
+                .map(bid -> BidderBid.of(bid, getBidType(bid.getImpid(), imps), bidResponse.getCur()))
+                .collect(Collectors.toList());
+    }
+
+    private static BidType getBidType(String impId, Map<String, Imp> imps) {
+        final Imp imp = imps.get(impId);
+        if (imp != null) {
+            if (imp.getVideo() != null) {
+                return BidType.video;
+            } else if (imp.getXNative() != null) {
+                return BidType.xNative;
+            }
+        }
+        return BidType.banner;
+    }
+}

src/main/java/org/prebid/server/proto/openrtb/ext/request/afront/ExtImpAfront.java

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

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

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+package org.prebid.server.spring.config.bidder;
+
+import org.prebid.server.bidder.BidderDeps;
+import org.prebid.server.bidder.afront.AfrontBidder;
+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 jakarta.validation.constraints.NotBlank;
+
+@Configuration
+@PropertySource(value = "classpath:/bidder-config/afront.yaml", factory = YamlPropertySourceFactory.class)
+public class AfrontConfiguration {
+
+    private static final String BIDDER_NAME = "afront";
+
+    @Bean("afrontConfigurationProperties")
+    @ConfigurationProperties("adapters.afront")
+    BidderConfigurationProperties configurationProperties() {
+        return new BidderConfigurationProperties();
+    }
+
+    @Bean
+    BidderDeps afrontBidderDeps(BidderConfigurationProperties afrontConfigurationProperties,
+                                @NotBlank @Value("${external-url}") String externalUrl,
+                                JacksonMapper mapper) {
+
+        return BidderDepsAssembler.forBidder(BIDDER_NAME)
+                .withConfig(afrontConfigurationProperties)
+                .usersyncerCreator(UsersyncerCreator.create(externalUrl))
+                .bidderCreator(config -> new AfrontBidder(config.getEndpoint(), mapper))
+                .assemble();
+    }
+}

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

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+# Contact support@afront.io to connect with Afront exchange.
+# We have the following regional endpoint sub-domains:
+# US East: snt1
+# APAC: snt2
+# EU: snt3
+# Please deploy this config in each of your datacenters with the appropriate regional subdomain
+adapters:
+  afront:
+    endpoint: https://snt1.afront.io/?rsd={{SourceId}}&sk={{AccountId}}
+    endpoint-compression: gzip
+    meta-info:
+      maintainer-email: support@afront.io
+      app-media-types:
+        - banner
+        - video
+        - native
+      site-media-types:
+        - banner
+        - video
+        - native
+      supported-vendors:
+      vendor-id: 0

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

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+{
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "title": "Afront Adapter Params",
+  "description": "A schema which validates params accepted by the Afront adapter",
+  "type": "object",
+  "properties": {
+    "accountId": {
+      "type": "string",
+      "description": "Client account id",
+      "minLength": 1
+    },
+    "sourceId": {
+      "type": "string",
+      "description": "Data source id",
+      "minLength": 1
+    }
+  },
+  "required": [
+    "accountId",
+    "sourceId"
+  ]
+}