Add Smartadserver bidder

src/main/java/org/prebid/server/bidder/smartadserver/SmartadserverBidder.java

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+package org.prebid.server.bidder.smartadserver;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+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 io.netty.handler.codec.http.HttpResponseStatus;
+import io.vertx.core.http.HttpMethod;
+import org.apache.http.client.utils.URIBuilder;
+import org.prebid.server.bidder.Bidder;
+import org.prebid.server.bidder.model.BidderBid;
+import org.prebid.server.bidder.model.BidderError;
+import org.prebid.server.bidder.model.HttpCall;
+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.smartadserver.ExtImpSmartadserver;
+import org.prebid.server.proto.openrtb.ext.response.BidType;
+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.Map;
+import java.util.Objects;
+import java.util.stream.Collectors;
+
+/**
+ * Smartadserver {@link Bidder} implementation.
+ */
+public class SmartadserverBidder implements Bidder<BidRequest> {
+
+    private static final TypeReference<ExtPrebid<?, ExtImpSmartadserver>> SMARTADSERVER_EXT_TYPE_REFERENCE =
+            new TypeReference<ExtPrebid<?, ExtImpSmartadserver>>() {
+            };
+
+    private final String endpointUrl;
+    private final JacksonMapper mapper;
+
+    public SmartadserverBidder(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<HttpRequest<BidRequest>> result = new ArrayList<>();
+
+        for (Imp imp : request.getImp()) {
+            try {
+                final ExtImpSmartadserver extImpSmartadserver = parseImpExt(imp);
+                final BidRequest updateRequest = request.toBuilder()
+                        .imp(Collections.singletonList(imp))
+                        .site(Site.builder()
+                                .publisher(Publisher.builder()
+                                        .id(String.valueOf(extImpSmartadserver.getNetworkId()))
+                                        .build())
+                                .build())
+                        .build();
+                result.add(createSingleRequest(updateRequest, getUri()));
+            } catch (PreBidException e) {
+                return Result.emptyWithError(BidderError.badInput(e.getMessage()));
+            }
+        }
+        return Result.of(result, Collections.emptyList());
+    }
+
+    private ExtImpSmartadserver parseImpExt(Imp imp) {
+        try {
+            return mapper.mapper().convertValue(imp.getExt(), SMARTADSERVER_EXT_TYPE_REFERENCE).getBidder();
+        } catch (IllegalArgumentException e) {
+            throw new PreBidException(e.getMessage(), e);
+        }
+    }
+
+    private String getUri() {
+        final URIBuilder uriBuilder = new URIBuilder()
+                .setPath(String.join("api/bid", endpointUrl))
+                .addParameter("callerId", "5");
+
+        return uriBuilder.toString();
+    }
+
+    private HttpRequest<BidRequest> createSingleRequest(BidRequest request, String url) {
+        final BidRequest outgoingRequest = request.toBuilder().build();
+        final String body = mapper.encode(outgoingRequest);
+        return HttpRequest.<BidRequest>builder()
+                .method(HttpMethod.POST)
+                .uri(url)
+                .headers(HttpUtil.headers())
+                .body(body)
+                .payload(outgoingRequest)
+                .build();
+    }
+
+    @Override
+    public Result<List<BidderBid>> makeBids(HttpCall<BidRequest> httpCall, BidRequest bidRequest) {
+        if (httpCall.getResponse().getStatusCode() == HttpResponseStatus.NO_CONTENT.code()) {
+            return Result.of(Collections.emptyList(), Collections.emptyList());
+        }
+
+        try {
+            final BidResponse bidResponse = mapper.decodeValue(httpCall.getResponse().getBody(), BidResponse.class);
+            return extractBids(httpCall.getRequest().getPayload(), bidResponse);
+        } catch (DecodeException | PreBidException e) {
+            return Result.emptyWithError(BidderError.badServerResponse(e.getMessage()));
+        }
+    }
+
+    private Result<List<BidderBid>> extractBids(BidRequest bidRequest, BidResponse bidResponse) {
+        if (bidResponse == null || bidResponse.getSeatbid() == null) {
+            return Result.of(Collections.emptyList(), Collections.emptyList());
+        }
+        final List<BidderError> errors = new ArrayList<>();
+        final List<BidderBid> bidderBids = bidResponse.getSeatbid().stream()
+                .filter(Objects::nonNull)
+                .map(SeatBid::getBid)
+                .filter(Objects::nonNull)
+                .flatMap(Collection::stream)
+                .map(bid -> toBidderBid(bidRequest, bid, bidResponse.getCur(), errors))
+                .filter(Objects::nonNull)
+                .collect(Collectors.toList());
+        return Result.of(bidderBids, errors);
+    }
+
+    private BidderBid toBidderBid(BidRequest bidRequest, Bid bid, String currency, List<BidderError> errors) {
+        try {
+            final BidType bidType = getBidType(bid.getImpid(), bidRequest.getImp());
+            return BidderBid.of(bid, bidType, currency);
+        } catch (PreBidException e) {
+            errors.add(BidderError.badInput(e.getMessage()));
+            return null;
+        }
+    }
+
+    private static BidType getBidType(String impId, List<Imp> imps) {
+        for (Imp imp : imps) {
+            if (imp.getId().equals(impId)) {
+                return imp.getVideo() != null ? BidType.video : BidType.banner;
+            }
+        }
+        return BidType.banner;
+    }
+
+    @Override
+    public Map<String, String> extractTargeting(ObjectNode ext) {
+        return Collections.emptyMap();
+    }
+}

src/main/java/org/prebid/server/proto/openrtb/ext/request/smartadserver/ExtImpSmartadserver.java

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+package org.prebid.server.proto.openrtb.ext.request.smartadserver;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.AllArgsConstructor;
+import lombok.Value;
+
+/**
+ * Defines the contract for bidrequest.imp[i].ext.smartadserver
+ */
+@AllArgsConstructor(staticName = "of")
+@Value
+public class ExtImpSmartadserver {
+
+    @JsonProperty("siteId")
+    Integer siteId;
+
+    @JsonProperty("pageId")
+    Integer pageId;
+
+    @JsonProperty("formatId")
+    Integer formatId;
+
+    @JsonProperty("networkId")
+    Integer networkId;
+}

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

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+package org.prebid.server.spring.config.bidder;
+
+import org.prebid.server.bidder.BidderDeps;
+import org.prebid.server.bidder.smartadserver.SmartadserverBidder;
+import org.prebid.server.json.JacksonMapper;
+import org.prebid.server.spring.config.bidder.model.BidderConfigurationProperties;
+import org.prebid.server.spring.config.bidder.model.UsersyncConfigurationProperties;
+import org.prebid.server.spring.config.bidder.util.BidderDepsAssembler;
+import org.prebid.server.spring.config.bidder.util.BidderInfoCreator;
+import org.prebid.server.spring.config.bidder.util.UsersyncerCreator;
+import org.prebid.server.spring.env.YamlPropertySourceFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+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/smartadserver.yaml", factory = YamlPropertySourceFactory.class)
+public class SmartadserverConfiguration {
+
+    private static final String BIDDER_NAME = "smartadserver";
+
+    @Value("${external-url}")
+    @NotBlank
+    private String externalUrl;
+
+    @Autowired
+    private JacksonMapper mapper;
+
+    @Autowired
+    @Qualifier("smartadserverConfigurationProperties")
+    private BidderConfigurationProperties configProperties;
+
+    @Bean("smartadserverConfigurationProperties")
+    @ConfigurationProperties("adapters.smartadserver")
+    BidderConfigurationProperties configurationProperties() {
+        return new BidderConfigurationProperties();
+    }
+
+    @Bean
+    BidderDeps smartadserverBidderDeps() {
+        final UsersyncConfigurationProperties usersync = configProperties.getUsersync();
+
+        return BidderDepsAssembler.forBidder(BIDDER_NAME)
+                .withConfig(configProperties)
+                .bidderInfo(BidderInfoCreator.create(configProperties))
+                .usersyncerCreator(UsersyncerCreator.create(usersync, externalUrl))
+                .bidderCreator(() -> new SmartadserverBidder(configProperties.getEndpoint(), mapper))
+                .assemble();
+    }
+}

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

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+adapters:
+  smartadserver:
+    enabled: false
+    endpoint: https://ssb.smartadserver.com
+    pbs-enforces-gdpr: true
+    pbs-enforces-ccpa: true
+    modifying-vast-xml-allowed: true
+    deprecated-names:
+    aliases:
+    meta-info:
+      maintainer-email: support@smartadserver.com
+      app-media-types:
+        - banner
+        - video
+      site-media-types:
+        - banner
+        - video
+      supported-vendors:
+      vendor-id: 328
+    usersync:
+      url: https://ssbsync.smartadserver.com/api/sync?callerId=5&gdpr={{gdpr}}&gdpr_consent={{gdpr_consent}}&us_privacy={{us_privacy}}&redirectUri=
+      redirect-url: /setuid?bidder=smartadserver&gdpr={{gdpr}}&gdpr_consent={{gdpr_consent}}&us_privacy={{us_privacy}}&uid=[ssb_sync_pid]
+      cookie-family-name: smartadserver
+      type: redirect
+      support-cors: false

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

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+{
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "title": "Smartadserver Adapter Params",
+  "description": "A schema which validates params accepted by the Smartadserver adapter",
+
+  "type": "object",
+  "properties": {
+    "siteId": {
+      "type": "integer",
+      "description": "The site id.",
+      "minimum": 1
+    },
+    "pageId": {
+      "type": "integer",
+      "description": "The page id.",
+      "minimum": 1
+    },
+    "formatId": {
+      "type": "integer",
+      "description": "The format id.",
+      "minimum": 1
+    },
+    "networkId": {
+      "type": "integer",
+      "description": "The network id.",
+      "minimum": 1
+    }
+  },
+  "dependencies": {
+    "siteId": { "required": ["pageId", "formatId"] },
+    "pageId": { "required": ["siteId", "formatId"] },
+    "formatId": { "required": ["siteId", "pageId"] }
+  },
+  "required": ["networkId"]
+}