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Core: Support Bidder Specific Imp Level Params (#3254)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| package org.prebid.server.auction; | ||
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| import com.fasterxml.jackson.databind.JsonNode; | ||
| import com.fasterxml.jackson.databind.node.ObjectNode; | ||
| import com.iab.openrtb.request.Imp; | ||
| import org.prebid.server.json.JacksonMapper; | ||
| import org.prebid.server.json.JsonMerger; | ||
| import org.prebid.server.validation.ImpValidator; | ||
|
|
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| import java.util.Iterator; | ||
| import java.util.List; | ||
| import java.util.Objects; | ||
| import java.util.Optional; | ||
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| public class ImpAdjuster { | ||
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| private static final String IMP_EXT = "ext"; | ||
| private static final String EXT_PREBID = "prebid"; | ||
| private static final String EXT_PREBID_BIDDER = "bidder"; | ||
| private static final String EXT_PREBID_IMP = "imp"; | ||
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| private final ImpValidator impValidator; | ||
| private final JacksonMapper jacksonMapper; | ||
| private final JsonMerger jsonMerger; | ||
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| public ImpAdjuster(JacksonMapper jacksonMapper, | ||
| JsonMerger jsonMerger, | ||
| ImpValidator impValidator) { | ||
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| this.impValidator = Objects.requireNonNull(impValidator); | ||
| this.jacksonMapper = Objects.requireNonNull(jacksonMapper); | ||
| this.jsonMerger = Objects.requireNonNull(jsonMerger); | ||
| } | ||
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| public Imp adjust(Imp originalImp, String bidder, BidderAliases bidderAliases, List<String> debugMessages) { | ||
| final JsonNode impExtPrebidImp = bidderParamsFromImpExtPrebidImp(originalImp.getExt()); | ||
| if (impExtPrebidImp == null) { | ||
| return originalImp; | ||
| } | ||
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| final JsonNode bidderNode = getBidderNode(bidder, bidderAliases, impExtPrebidImp); | ||
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| if (bidderNode == null || bidderNode.isEmpty()) { | ||
| return originalImp; | ||
| } | ||
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| // remove circular references according to the requirements | ||
| removeExtPrebidBidder(bidderNode); | ||
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| try { | ||
| final JsonNode originalImpNode = jacksonMapper.mapper().valueToTree(originalImp); | ||
| final JsonNode mergedImpNode = jsonMerger.merge(bidderNode, originalImpNode); | ||
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| // clean up merged imp.ext.prebid.imp | ||
| removeImpExtPrebidImp(mergedImpNode); | ||
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| final Imp resultImp = jacksonMapper.mapper().convertValue(mergedImpNode, Imp.class); | ||
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| impValidator.validateImp(resultImp); | ||
| return resultImp; | ||
| } catch (Exception e) { | ||
| debugMessages.add("imp.ext.prebid.imp.%s can not be merged into original imp [id=%s], reason: %s" | ||
| .formatted(bidder, originalImp.getId(), e.getMessage())); | ||
| return originalImp; | ||
| } | ||
| } | ||
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| private static JsonNode bidderParamsFromImpExtPrebidImp(ObjectNode ext) { | ||
| return Optional.ofNullable(ext) | ||
| .map(extNode -> extNode.get(EXT_PREBID)) | ||
| .map(prebidNode -> prebidNode.get(EXT_PREBID_IMP)) | ||
| .orElse(null); | ||
| } | ||
|
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| private static JsonNode getBidderNode(String bidderName, BidderAliases bidderAliases, JsonNode node) { | ||
| final Iterator<String> fieldNames = node.fieldNames(); | ||
| while (fieldNames.hasNext()) { | ||
| final String fieldName = fieldNames.next(); | ||
| if (bidderAliases.isSame(fieldName, bidderName)) { | ||
| return node.get(fieldName); | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
|
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| private static void removeExtPrebidBidder(JsonNode bidderNode) { | ||
| Optional.ofNullable(bidderNode.get(IMP_EXT)) | ||
| .map(extNode -> extNode.get(EXT_PREBID)) | ||
| .map(ObjectNode.class::cast) | ||
| .ifPresent(ext -> ext.remove(EXT_PREBID_BIDDER)); | ||
| } | ||
|
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| private static void removeImpExtPrebidImp(JsonNode mergedImpNode) { | ||
| Optional.ofNullable(mergedImpNode.get(IMP_EXT)) | ||
| .map(extNode -> extNode.get(EXT_PREBID)) | ||
| .map(ObjectNode.class::cast) | ||
| .ifPresent(prebid -> prebid.remove(EXT_PREBID_IMP)); | ||
| } | ||
| } |
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