[Spring cloud 一步步实现广告系统] 17. 根据流量类型查询广告

广告检索服务

功能介绍

媒体方（手机APP打开的展示广告，走在路上看到的大屏幕广告等等）

请求数据对象实现

从上图我们可以看出，在媒体方向我们的广告检索系统发起请求的时候，请求中会有很多的请求参数信息，他们分为了三个部分，我们来编码封装这几个参数对象信息以及我们请求本身的信息。Let's code.

• 创建广告检索请求接口

 /** * ISearch for 请求接口, * 根据广告请求对象，获取广告响应信息 * * @author <a href="mailto:magicianisaac@gmail.com">Isaac.Zhang | 若初</a> */ @FunctionalInterface public interface ISearch { /** * 根据请求返回广告结果 */ SearchResponse fetchAds(SearchRequest request); }

• 创建SearchRequest,包含三部分：mediaId,RequestInfo,FeatureInfo

@Data @NoArgsConstructor @AllArgsConstructor public class SearchRequest { //媒体方请求标示 private String mediaId; //请求基本信息 private RequestInfo requestInfo; //匹配信息 private FeatureInfo featureInfo; @Data @NoArgsConstructor @AllArgsConstructor public static class RequestInfo { private String requestId; private List<AdSlot> adSlots; private App app; private Geo geo; private Device device; } @Data @NoArgsConstructor @AllArgsConstructor public static class FeatureInfo { private KeywordFeature keywordFeature; private DistrictFeature districtFeature; private HobbyFeatrue hobbyFeatrue; private FeatureRelation relation = FeatureRelation.AND; } }

其他的对象大家可以去github传送门 & gitee传送门 下载源码。

检索响应对象定义

/** * SearchResponse for 检索API响应对象 * * @author <a href="mailto:magicianisaac@gmail.com">Isaac.Zhang | 若初</a> */ @Data @Builder @NoArgsConstructor @AllArgsConstructor public class SearchResponse { //一个广告位，可以展示多个广告 //Map key为广告位 AdSlot#adSlotCode public Map<String, List<Creative>> adSlotRelationAds = new HashMap<>(); @Data @Builder @NoArgsConstructor @AllArgsConstructor public static class Creative { private Long adId; private String adUrl; private Integer width; private Integer height; private Integer type; private Integer materialType; //展示监控url private List<String> showMonitorUrl = Arrays.asList("www.life-runner.com", "www.babydy.cn"); //点击监控url private List<String> clickMonitorUrl = Arrays.asList("www.life-runner.com", "www.babydy.cn"); } /** * 我们的检索服务针对的是内存中的索引检索，那么我们就需要一个转换方法 */ public static Creative convert(CreativeIndexObject object) { return Creative.builder() .adId(object.getAdId()) .adUrl(object.getAdUrl()) .width(object.getWidth()) .height(object.getHeight()) .type(object.getType()) .materialType(object.getMaterialType()) .build(); } }

根据流量类型广告过滤

流量类型本身属于推广单元下的类目，有很多种类贴片广告,开屏广告等等，这些类型需要同步到媒体方，媒体方会根据不同的流量类型发起不同的广告请求，我们需要先定义一个流量类型的信息类。

public class AdUnitConstants { public static class PositionType{ //App启动时展示的、展示时间短暂的全屏化广告形式。 private static final int KAIPING = 1; //电影开始之前的广告 private static final int TIEPIAN = 2; //电影播放中途广告 private static final int TIEPIAN_MIDDLE = 4; //暂停视频时候播放的广告 private static final int TIEPIAN_PAUSE = 8; //视频播放完 private static final int TIEPIAN_POST = 16; } }

从上述类型的数字，我们可以看出是2的倍数，这是为了使用位运算提升性能。

在com.sxzhongf.ad.index.adunit.AdUnitIndexObject中，我们添加类型校验方法：

public static boolean isAdSlotType(int adSlotType, int positionType) { switch (adSlotType) { case AdUnitConstants.PositionType.KAIPING: return isKaiPing(positionType); case AdUnitConstants.PositionType.TIEPIAN: return isTiePian(positionType); case AdUnitConstants.PositionType.TIEPIAN_MIDDLE: return isTiePianMiddle(positionType); case AdUnitConstants.PositionType.TIEPIAN_PAUSE: return isTiePianPause(positionType); case AdUnitConstants.PositionType.TIEPIAN_POST: return isTiePianPost(positionType); default: return false; } } /** * 与运算，低位取等，高位补零。 * 如果 > 0，则为开屏 */ private static boolean isKaiPing(int positionType) { return (positionType & AdUnitConstants.PositionType.KAIPING) > 0; } private static boolean isTiePianMiddle(int positionType) { return (positionType & AdUnitConstants.PositionType.TIEPIAN_MIDDLE) > 0; } private static boolean isTiePianPause(int positionType) { return (positionType & AdUnitConstants.PositionType.TIEPIAN_PAUSE) > 0; } private static boolean isTiePianPost(int positionType) { return (positionType & AdUnitConstants.PositionType.TIEPIAN_POST) > 0; } private static boolean isTiePian(int positionType) { return (positionType & AdUnitConstants.PositionType.TIEPIAN) > 0; }

无所如何，我们都是需要根据positionType进行数据查询过滤，我们在之前的com.sxzhongf.ad.index.adunit.AdUnitIndexAwareImpl中添加2个方法来实现过滤:

/** * 过滤当前是否存在满足positionType的UnitIds */ public Set<Long> match(Integer positionType) { Set<Long> adUnitIds = new HashSet<>(); objectMap.forEach((k, v) -> { if (AdUnitIndexObject.isAdSlotType(positionType, v.getPositionType())) { adUnitIds.add(k); } }); return adUnitIds; } /** * 根据UnitIds查询AdUnit list */ public List<AdUnitIndexObject> fetch(Collection<Long> adUnitIds) { if (CollectionUtils.isEmpty(adUnitIds)) { return Collections.EMPTY_LIST; } List<AdUnitIndexObject> result = new ArrayList<>(); adUnitIds.forEach(id -> { AdUnitIndexObject object = get(id); if (null == object) { log.error("AdUnitIndexObject does not found:{}", id); return; } result.add(object); }); return result; }

• 实现Search服务接口

上述我们准备了一系列的查询方法，都是为了根据流量类型查询广告单元信息，我们现在开始实现我们的查询接口，查询接口中，我们可以获取到媒体方的请求对象信息，它带有一系列查询所需要的过滤参数：

/** * SearchImpl for 实现search 服务 * * @author <a href="mailto:magicianisaac@gmail.com">Isaac.Zhang | 若初</a> */ @Service @Slf4j public class SearchImpl implements ISearch { @Override public SearchResponse fetchAds(SearchRequest request) { //获取请求广告位信息 List<AdSlot> adSlotList = request.getRequestInfo().getAdSlots(); //获取三个Feature信息 KeywordFeature keywordFeature = request.getFeatureInfo().getKeywordFeature(); HobbyFeatrue hobbyFeatrue = request.getFeatureInfo().getHobbyFeatrue(); DistrictFeature districtFeature = request.getFeatureInfo().getDistrictFeature(); //Feature关系 FeatureRelation featureRelation = request.getFeatureInfo().getRelation(); //构造响应对象 SearchResponse response = new SearchResponse(); Map<String, List<SearchResponse.Creative>> adSlotRelationAds = response.getAdSlotRelationAds(); for (AdSlot adSlot : adSlotList) { Set<Long> targetUnitIdSet; //根据流量类型从缓存中获取 初始 广告信息 Set<Long> adUnitIdSet = IndexDataTableUtils.of( AdUnitIndexAwareImpl.class ).match(adSlot.getPositionType()); } return null; } }