[Bidder Adapter] Add AdPlayx adapter

src/main/java/org/prebid/server/bidder/adplayx/AdplayxBidder.java

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+package org.prebid.server.bidder.adplayx;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.iab.openrtb.request.BidRequest;
+import com.iab.openrtb.request.Imp;
+import com.iab.openrtb.response.Bid;
+import com.iab.openrtb.response.BidResponse;
+import com.iab.openrtb.response.SeatBid;
+import io.vertx.core.http.HttpMethod;
+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.JacksonMapper;
+import org.prebid.server.proto.openrtb.ext.ExtPrebid;
+import org.prebid.server.proto.openrtb.ext.request.adplayx.ExtImpAdplayx;
+import org.prebid.server.proto.openrtb.ext.response.BidType;
+import org.prebid.server.util.HttpUtil;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+public class AdplayxBidder implements Bidder<BidRequest> {
+
+    private static final TypeReference<ExtPrebid<?, ExtImpAdplayx>> ADPLAYX_EXT_TYPE_REFERENCE =
+            new TypeReference<>() { };
+
+    private final String endpointUrl;
+    private final JacksonMapper mapper;
+
+    public AdplayxBidder(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 List<BidderError> errors = new ArrayList<>();
+        final List<HttpRequest<BidRequest>> httpRequests = new ArrayList<>();
+
+        for (Imp imp : request.getImp()) {
+            try {
+                final ExtImpAdplayx extImp = parseImpExt(imp);
+
+                if (StringUtils.isBlank(extImp.getApptoken())) {
+                    errors.add(BidderError.badInput("apptoken is required"));
+                    continue;
+                }
+
+                final String uri = buildEndpointUrl(extImp);
+
+                // Clone bid request for this impression
+                final BidRequest outgoingRequest = request.toBuilder()
+                        .imp(Collections.singletonList(imp))
+                        .build();
+
+                httpRequests.add(HttpRequest.<BidRequest>builder()
+                        .method(HttpMethod.POST)
+                        .uri(uri)
+                        .headers(HttpUtil.headers())
+                        .body(mapper.encodeToBytes(outgoingRequest))
+                        .payload(outgoingRequest)
+                        .build());
+            } catch (PreBidException e) {
+                errors.add(BidderError.badInput(e.getMessage()));
+            }
+        }
+
+        return Result.of(httpRequests, errors);
+    }
+
+    private ExtImpAdplayx parseImpExt(Imp imp) {
+        try {
+            return mapper.mapper().convertValue(imp.getExt(), ADPLAYX_EXT_TYPE_REFERENCE).getBidder();
+        } catch (IllegalArgumentException e) {
+            throw new PreBidException("Error parsing imp.ext: " + e.getMessage());
+        }
+    }
+
+    private String buildEndpointUrl(ExtImpAdplayx extImp) {
+        String uri = endpointUrl.replace("{{apptoken}}", HttpUtil.encodeUrl(extImp.getApptoken()));
+        if (StringUtils.isNotBlank(extImp.getPlacementid())) {
+            uri += "&placementid=" + HttpUtil.encodeUrl(extImp.getPlacementid());
+        }
+        return uri;
+    }
+
+    @Override
+    public Result<List<BidderBid>> makeBids(BidderCall<BidRequest> httpCall, BidRequest bidRequest) {
+        final String responseBody = httpCall.getResponse().getBody();
+        if (StringUtils.isBlank(responseBody)) {
+            return Result.empty();
+        }
+
+        try {
+            final BidResponse bidResponse = mapper.decodeValue(responseBody, BidResponse.class);
+            if (bidResponse == null || bidResponse.getSeatbid() == null) {
+                return Result.empty();
+            }
+
+            final List<BidderError> errors = new ArrayList<>();
+            final List<BidderBid> bidderBids = new ArrayList<>();
+
+            for (final SeatBid seatBid : bidResponse.getSeatbid()) {
+                for (final Bid bid : seatBid.getBid()) {
+                    try {
+                        final BidType bidType = getBidType(bid.getImpid(), bidRequest.getImp());
+                        bidderBids.add(BidderBid.of(bid, bidType, bidResponse.getCur()));
+                    } catch (final PreBidException e) {
+                        errors.add(BidderError.badServerResponse(e.getMessage()));
+                    }
+                }
+            }
+
+            return Result.of(bidderBids, errors);
+        } catch (final Exception e) {
+            return Result.withError(BidderError.badServerResponse("Failed to decode response: " + e.getMessage()));
+        }
+    }
+
+    private BidType getBidType(String impId, List<Imp> imps) {
+        for (Imp imp : imps) {
+            if (imp.getId().equals(impId)) {
+                if (imp.getBanner() != null) {
+                    return BidType.banner;
+                }
+                if (imp.getVideo() != null) {
+                    return BidType.video;
+                }
+                if (imp.getAudio() != null) {
+                    return BidType.audio;
+                }
+                if (imp.getXNative() != null) {
+                    return BidType.xNative;
+                }
+            }
+        }
+        throw new PreBidException("Failed to find impression with id: " + impId);
+    }
+}

src/main/java/org/prebid/server/proto/openrtb/ext/request/adplayx/ExtImpAdplayx.java

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+package org.prebid.server.proto.openrtb.ext.request.adplayx;
+
+import lombok.Value;
+
+@Value(staticConstructor = "of")
+public class ExtImpAdplayx {
+
+    String apptoken;
+
+    String placementid;
+}

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

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+package org.prebid.server.spring.config.bidder;
+
+import org.prebid.server.bidder.BidderDeps;
+import org.prebid.server.bidder.adplayx.AdplayxBidder;
+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/adplayx.yaml", factory = YamlPropertySourceFactory.class)
+public class AdplayxConfiguration {
+
+    private static final String BIDDER_NAME = "adplayx";
+
+    @Bean("adplayxConfigurationProperties")
+    @ConfigurationProperties("adapters.adplayx")
+    BidderConfigurationProperties configurationProperties() {
+        return new BidderConfigurationProperties();
+    }
+
+    @Bean
+    BidderDeps adplayxBidderDeps(BidderConfigurationProperties adplayxConfigurationProperties,
+                                 JacksonMapper mapper) {
+
+        return BidderDepsAssembler.forBidder(BIDDER_NAME)
+                .withConfig(adplayxConfigurationProperties)
+                .bidderCreator(config -> new AdplayxBidder(config.getEndpoint(), mapper))
+                .assemble();
+    }
+}

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

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+adapters:
+  adplayx:
+    enabled: true
+    endpoint: "https://api.adplayx.net/v1.0/ortb?apptoken={{apptoken}}"
+    pbs-enforces-ccpa: true
+    modifying-vast-xml-allowed: true
+    meta-info:
+      maintainer-email: "support@adplayx.com"
+      app-media-types:
+        - banner
+        - video
+      site-media-types:
+        - banner
+        - video
+      supported-vendors: []
+      vendor-id: 0

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

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+{
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "title": "AdPlayx Adapter Params",
+  "type": "object",
+  "properties": {
+    "apptoken": {
+      "type": "string",
+      "description": "Publisher app token"
+    },
+    "placementid": {
+      "type": "string",
+      "description": "Placement ID (optional)"
+    }
+  },
+  "required": ["apptoken"]
+}