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| 1 | +package org.prebid.server.bidder.nativery; |
| 2 | + |
| 3 | +import com.fasterxml.jackson.core.type.TypeReference; |
| 4 | +import com.fasterxml.jackson.databind.JsonNode; |
| 5 | +import com.fasterxml.jackson.databind.node.ObjectNode; |
| 6 | +import com.iab.openrtb.request.BidRequest; |
| 7 | +import com.iab.openrtb.request.Imp; |
| 8 | +import com.iab.openrtb.response.Bid; |
| 9 | +import com.iab.openrtb.response.BidResponse; |
| 10 | +import com.iab.openrtb.response.SeatBid; |
| 11 | +import org.apache.commons.collections4.CollectionUtils; |
| 12 | +import org.apache.commons.collections4.ListUtils; |
| 13 | +import org.apache.commons.lang3.StringUtils; |
| 14 | +import org.prebid.server.auction.model.Endpoint; |
| 15 | +import org.prebid.server.bidder.Bidder; |
| 16 | +import org.prebid.server.bidder.model.BidderBid; |
| 17 | +import org.prebid.server.bidder.model.BidderCall; |
| 18 | +import org.prebid.server.bidder.model.BidderError; |
| 19 | +import org.prebid.server.bidder.model.HttpRequest; |
| 20 | +import org.prebid.server.bidder.model.HttpResponse; |
| 21 | +import org.prebid.server.bidder.model.Result; |
| 22 | +import org.prebid.server.exception.PreBidException; |
| 23 | +import org.prebid.server.json.DecodeException; |
| 24 | +import org.prebid.server.json.JacksonMapper; |
| 25 | +import org.prebid.server.proto.openrtb.ext.ExtPrebid; |
| 26 | +import org.prebid.server.proto.openrtb.ext.request.ExtRequest; |
| 27 | +import org.prebid.server.proto.openrtb.ext.request.ExtRequestPrebid; |
| 28 | +import org.prebid.server.proto.openrtb.ext.request.ExtRequestPrebidServer; |
| 29 | +import org.prebid.server.proto.openrtb.ext.request.nativery.BidExtNativery; |
| 30 | +import org.prebid.server.proto.openrtb.ext.request.nativery.ExtImpNativery; |
| 31 | +import org.prebid.server.proto.openrtb.ext.response.BidType; |
| 32 | +import org.prebid.server.proto.openrtb.ext.response.ExtBidPrebid; |
| 33 | +import org.prebid.server.proto.openrtb.ext.response.ExtBidPrebidMeta; |
| 34 | +import org.prebid.server.util.BidderUtil; |
| 35 | +import org.prebid.server.util.HttpUtil; |
| 36 | + |
| 37 | +import java.util.ArrayList; |
| 38 | +import java.util.Collection; |
| 39 | +import java.util.Collections; |
| 40 | +import java.util.List; |
| 41 | +import java.util.Objects; |
| 42 | +import java.util.Optional; |
| 43 | + |
| 44 | +public class NativeryBidder implements Bidder<BidRequest> { |
| 45 | + |
| 46 | + private static final TypeReference<ExtPrebid<?, ExtImpNativery>> NATIVERY_EXT_TYPE_REFERENCE = |
| 47 | + new TypeReference<>() { |
| 48 | + }; |
| 49 | + |
| 50 | + private static final TypeReference<ExtPrebid<ExtBidPrebid, ?>> EXT_PREBID_TYPE_REFERENCE = |
| 51 | + new TypeReference<>() { |
| 52 | + }; |
| 53 | + |
| 54 | + private static final String DEFAULT_CURRENCY = "EUR"; |
| 55 | + |
| 56 | + private final String endpointUrl; |
| 57 | + private final JacksonMapper mapper; |
| 58 | + |
| 59 | + public NativeryBidder(String endpointUrl, JacksonMapper mapper) { |
| 60 | + this.endpointUrl = HttpUtil.validateUrl(Objects.requireNonNull(endpointUrl)); |
| 61 | + this.mapper = Objects.requireNonNull(mapper); |
| 62 | + } |
| 63 | + |
| 64 | + @Override |
| 65 | + public Result<List<HttpRequest<BidRequest>>> makeHttpRequests(BidRequest request) { |
| 66 | + final List<HttpRequest<BidRequest>> httpRequests = new ArrayList<>(); |
| 67 | + final List<BidderError> errors = new ArrayList<>(); |
| 68 | + |
| 69 | + final String requestEndpointName = extractEndpointName(request); |
| 70 | + final boolean isAmp = StringUtils.equals(requestEndpointName, Endpoint.openrtb2_amp.value()); |
| 71 | + |
| 72 | + final List<Imp> validImps = new ArrayList<>(); |
| 73 | + String widgetId = null; |
| 74 | + |
| 75 | + for (Imp imp : request.getImp()) { |
| 76 | + try { |
| 77 | + final ExtImpNativery extImp = parseImpExt(imp); |
| 78 | + if (widgetId == null && StringUtils.isNotBlank(extImp.getWidgetId())) { |
| 79 | + widgetId = extImp.getWidgetId(); |
| 80 | + } |
| 81 | + validImps.add(imp); |
| 82 | + } catch (PreBidException e) { |
| 83 | + errors.add(BidderError.badInput(e.getMessage())); |
| 84 | + } |
| 85 | + } |
| 86 | + |
| 87 | + if (validImps.isEmpty()) { |
| 88 | + return Result.withErrors(errors); |
| 89 | + } |
| 90 | + |
| 91 | + final ExtRequest updatedExt = buildRequestExtWithNativery(request.getExt(), isAmp, widgetId); |
| 92 | + |
| 93 | + for (Imp imp : validImps) { |
| 94 | + final BidRequest singleImpRequest = request.toBuilder() |
| 95 | + .imp(Collections.singletonList(imp)) |
| 96 | + .ext(updatedExt) |
| 97 | + .build(); |
| 98 | + |
| 99 | + httpRequests.add(BidderUtil.defaultRequest(singleImpRequest, endpointUrl, mapper)); |
| 100 | + } |
| 101 | + |
| 102 | + return Result.of(httpRequests, errors); |
| 103 | + } |
| 104 | + |
| 105 | + private static String extractEndpointName(BidRequest bidRequest) { |
| 106 | + return Optional.ofNullable(bidRequest) |
| 107 | + .map(BidRequest::getExt) |
| 108 | + .map(ExtRequest::getPrebid) |
| 109 | + .map(ExtRequestPrebid::getServer) |
| 110 | + .map(ExtRequestPrebidServer::getEndpoint) |
| 111 | + .orElse(null); |
| 112 | + } |
| 113 | + |
| 114 | + private ExtImpNativery parseImpExt(Imp imp) { |
| 115 | + try { |
| 116 | + return mapper.mapper().convertValue(imp.getExt(), NATIVERY_EXT_TYPE_REFERENCE).getBidder(); |
| 117 | + } catch (IllegalArgumentException e) { |
| 118 | + throw new PreBidException("Failed to deserialize Nativery extension: " + e.getMessage()); |
| 119 | + } |
| 120 | + } |
| 121 | + |
| 122 | + private ExtRequest buildRequestExtWithNativery(ExtRequest originalExt, boolean isAmp, String widgetId) { |
| 123 | + final ExtRequest ext = originalExt != null ? originalExt : ExtRequest.empty(); |
| 124 | + |
| 125 | + final JsonNode existing = ext.getProperty("nativery"); |
| 126 | + final ObjectNode nativeryNode = existing != null && existing.isObject() |
| 127 | + ? (ObjectNode) existing |
| 128 | + : mapper.mapper().createObjectNode(); |
| 129 | + |
| 130 | + nativeryNode.put("isAmp", isAmp); |
| 131 | + if (StringUtils.isNotBlank(widgetId)) { |
| 132 | + nativeryNode.put("widgetId", widgetId); |
| 133 | + } |
| 134 | + |
| 135 | + ext.addProperty("nativery", nativeryNode); |
| 136 | + return ext; |
| 137 | + } |
| 138 | + |
| 139 | + @Override |
| 140 | + public Result<List<BidderBid>> makeBids(BidderCall<BidRequest> httpCall, BidRequest bidRequest) { |
| 141 | + final List<BidderError> errors = new ArrayList<>(); |
| 142 | + |
| 143 | + final HttpResponse response = httpCall.getResponse(); |
| 144 | + |
| 145 | + try { |
| 146 | + final BidResponse bidResponse = mapper.decodeValue(response.getBody(), BidResponse.class); |
| 147 | + final List<BidderBid> bidderBids = extractBids(bidResponse, errors); |
| 148 | + return Result.of(bidderBids, errors); |
| 149 | + } catch (DecodeException e) { |
| 150 | + return Result.withError(BidderError.badServerResponse(e.getMessage())); |
| 151 | + } |
| 152 | + } |
| 153 | + |
| 154 | + private List<BidderBid> extractBids(BidResponse bidResponse, List<BidderError> errors) { |
| 155 | + if (bidResponse == null || CollectionUtils.isEmpty(bidResponse.getSeatbid())) { |
| 156 | + return Collections.emptyList(); |
| 157 | + } |
| 158 | + |
| 159 | + final String currency = StringUtils.defaultIfBlank(bidResponse.getCur(), DEFAULT_CURRENCY); |
| 160 | + |
| 161 | + return bidResponse.getSeatbid().stream() |
| 162 | + .filter(Objects::nonNull) |
| 163 | + .map(SeatBid::getBid) |
| 164 | + .filter(Objects::nonNull) |
| 165 | + .flatMap(Collection::stream) |
| 166 | + .filter(Objects::nonNull) |
| 167 | + .map(bid -> resolveBidderBid(bid, currency, errors)) |
| 168 | + .filter(Objects::nonNull) |
| 169 | + .toList(); |
| 170 | + } |
| 171 | + |
| 172 | + private BidderBid resolveBidderBid(Bid bid, String currency, List<BidderError> errors) { |
| 173 | + try { |
| 174 | + final BidExtNativery nativeryExt = parseNativeryExt(bid.getExt()); |
| 175 | + |
| 176 | + final BidType bidType = mapMediaType(nativeryExt.getBidAdMediaType()); |
| 177 | + final List<String> advDomains = ListUtils.emptyIfNull( |
| 178 | + nativeryExt.getBidAdvDomains()); |
| 179 | + |
| 180 | + final Bid updatedBid = addBidMeta(bid, bidType.getName(), advDomains); |
| 181 | + return BidderBid.of(updatedBid, bidType, currency); |
| 182 | + } catch (PreBidException e) { |
| 183 | + errors.add(BidderError.badInput(e.getMessage())); |
| 184 | + return null; |
| 185 | + } |
| 186 | + } |
| 187 | + |
| 188 | + private BidExtNativery parseNativeryExt(ObjectNode bidExt) { |
| 189 | + return Optional.ofNullable(bidExt) |
| 190 | + .map(ext -> ext.get("nativery")) |
| 191 | + .filter(JsonNode::isObject) |
| 192 | + .map(this::toBidExtNativery) |
| 193 | + .orElseThrow(() -> new PreBidException("missing bid.ext.nativery")); |
| 194 | + } |
| 195 | + |
| 196 | + private BidExtNativery toBidExtNativery(JsonNode node) { |
| 197 | + try { |
| 198 | + return mapper.mapper().convertValue(node, BidExtNativery.class); |
| 199 | + } catch (IllegalArgumentException e) { |
| 200 | + throw new PreBidException("invalid bid.ext.nativery: " + e.getMessage()); |
| 201 | + } |
| 202 | + } |
| 203 | + |
| 204 | + private static BidType mapMediaType(String mediaType) { |
| 205 | + final String mt = StringUtils.defaultString(mediaType).toLowerCase(); |
| 206 | + return switch (mt) { |
| 207 | + case "native" -> BidType.xNative; |
| 208 | + case "display", "banner", "rich_media" -> BidType.banner; |
| 209 | + case "video" -> BidType.video; |
| 210 | + default -> throw new PreBidException( |
| 211 | + "unrecognized bid_ad_media_type in response from nativery: " + mediaType); |
| 212 | + }; |
| 213 | + } |
| 214 | + |
| 215 | + private Bid addBidMeta(Bid bid, String mediaType, List<String> advDomains) { |
| 216 | + final ExtBidPrebid prebid = parseExtBidPrebid(bid); |
| 217 | + |
| 218 | + final ExtBidPrebidMeta modifiedMeta = Optional.ofNullable(prebid) |
| 219 | + .map(ExtBidPrebid::getMeta) |
| 220 | + .map(ExtBidPrebidMeta::toBuilder) |
| 221 | + .orElseGet(ExtBidPrebidMeta::builder) |
| 222 | + .mediaType(mediaType) |
| 223 | + .advertiserDomains(advDomains) |
| 224 | + .build(); |
| 225 | + |
| 226 | + final ExtBidPrebid modifiedPrebid = Optional.ofNullable(prebid) |
| 227 | + .map(ExtBidPrebid::toBuilder) |
| 228 | + .orElseGet(ExtBidPrebid::builder) |
| 229 | + .meta(modifiedMeta) |
| 230 | + .build(); |
| 231 | + |
| 232 | + return bid.toBuilder() |
| 233 | + .ext(mapper.mapper().valueToTree(ExtPrebid.of(modifiedPrebid, null))) |
| 234 | + .build(); |
| 235 | + } |
| 236 | + |
| 237 | + private ExtBidPrebid parseExtBidPrebid(Bid bid) { |
| 238 | + try { |
| 239 | + return mapper.mapper() |
| 240 | + .convertValue(bid.getExt(), EXT_PREBID_TYPE_REFERENCE) |
| 241 | + .getPrebid(); |
| 242 | + } catch (IllegalArgumentException e) { |
| 243 | + throw new PreBidException("Failed to deserialize Prebid extension: " + e.getMessage()); |
| 244 | + } |
| 245 | + } |
| 246 | +} |
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