New Adapter: Sevio

src/main/java/org/prebid/server/bidder/sevio/SevioBidder.java

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+package org.prebid.server.bidder.sevio;
+
+import com.iab.openrtb.request.BidRequest;
+import com.iab.openrtb.response.Bid;
+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.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;
+
+public class SevioBidder implements Bidder<BidRequest> {
+
+    private final String endpointUrl;
+    private final JacksonMapper mapper;
+
+    public SevioBidder(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 MultiMap headers = HttpUtil.headers().add(HttpUtil.X_OPENRTB_VERSION_HEADER, "2.6");
+        return Result.withValue(BidderUtil.defaultRequest(bidRequest, headers, endpointUrl, mapper));
+    }
+
+    @Override
+    public final Result<List<BidderBid>> makeBids(BidderCall<BidRequest> httpCall, BidRequest bidRequest) {
+        try {
+            final var bidResponse = mapper.decodeValue(httpCall.getResponse().getBody(), BidResponse.class);
+            final var errors = new ArrayList<BidderError>();
+            return Result.of(extractBids(bidResponse, errors), errors);
+        } catch (DecodeException e) {
+            return Result.withError(BidderError.badServerResponse(e.getMessage()));
+        }
+    }
+
+    private static 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)
+                .map(bid -> makeBid(bid, bidResponse.getCur(), errors))
+                .filter(Objects::nonNull)
+                .toList();
+    }
+
+    private static BidderBid makeBid(Bid bid, String currency, List<BidderError> errors) {
+        try {
+            return BidderBid.of(bid, getBidType(bid), currency);
+        } catch (PreBidException e) {
+            errors.add(BidderError.badServerResponse(e.getMessage()));
+            return null;
+        }
+    }
+
+    private static BidType getBidType(Bid bid) {
+        final var mtype = bid.getMtype();
+        if (mtype == null) {
+            throw new PreBidException("Missing MType for bid: " + bid.getId());
+        }
+
+        return switch (mtype) {
+            case 1 -> BidType.banner;
+            case 4 -> BidType.xNative;
+            case 2 -> BidType.video;
+            default -> throw new PreBidException(
+                    "failed to parse bid mtype (%d) for impression id \"%s\"".formatted(mtype, bid.getImpid()));
+        };
+    }
+}

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

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+package org.prebid.server.spring.config.bidder;
+
+import org.prebid.server.bidder.BidderDeps;
+import org.prebid.server.bidder.sevio.SevioBidder;
+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/sevio.yaml", factory = YamlPropertySourceFactory.class)
+public class SevioConfiguration {
+
+    private static final String BIDDER_NAME = "sevio";
+
+    @Bean("sevioConfigurationProperties")
+    @ConfigurationProperties("adapters.sevio")
+    BidderConfigurationProperties configurationProperties() {
+        return new BidderConfigurationProperties();
+    }
+
+    @Bean
+    BidderDeps sevioBidderDeps(BidderConfigurationProperties sevioConfigurationProperties,
+                               @NotBlank @Value("${external-url}") String externalUrl,
+                               JacksonMapper mapper) {
+
+        return BidderDepsAssembler.forBidder(BIDDER_NAME)
+                .withConfig(sevioConfigurationProperties)
+                .usersyncerCreator(UsersyncerCreator.create(externalUrl))
+                .bidderCreator(config -> new SevioBidder(config.getEndpoint(), mapper))
+                .assemble();
+    }
+}

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

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+adapters:
+  sevio:
+    endpoint: https://req.adx.ws/rtb
+    meta-info:
+      maintainer-email: technical@sevio.com
+      app-media-types:
+        - banner
+        - native
+      site-media-types:
+        - banner
+        - native
+      supported-vendors:
+      vendor-id: 0

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

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+{
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "title": "Sevio Adapter Params",
+  "description": "A schema which validates params accepted by the Sevio adapter",
+  "type": "object",
+  "properties": {
+    "placementId": {
+      "type": "string",
+      "minLength": 1,
+      "description": "Ad placement identifier"
+    }
+  },
+  "required": [
+    "placementId"
+  ]
+}