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+package com.tzld.piaoquan.recommend.server.service.recall.strategy;
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+
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+import com.tzld.piaoquan.recommend.server.model.Video;
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+import com.tzld.piaoquan.recommend.server.service.filter.FilterParam;
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+import com.tzld.piaoquan.recommend.server.service.filter.FilterResult;
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+import com.tzld.piaoquan.recommend.server.service.flowpool.FlowPoolConfigService;
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+import com.tzld.piaoquan.recommend.server.service.flowpool.FlowPoolConstants;
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+import com.tzld.piaoquan.recommend.server.service.recall.FilterParamFactory;
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+import com.tzld.piaoquan.recommend.server.service.recall.RecallParam;
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+import com.tzld.piaoquan.recommend.server.service.score.ScorerUtils;
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+import com.tzld.piaoquan.recommend.server.service.score4recall.ScorerPipeline4Recall;
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+import lombok.Data;
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+import lombok.extern.slf4j.Slf4j;
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+import org.apache.commons.collections4.CollectionUtils;
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+import org.apache.commons.lang3.RandomUtils;
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+import org.apache.commons.lang3.math.NumberUtils;
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+import org.apache.commons.lang3.tuple.Pair;
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+import org.springframework.beans.factory.annotation.Autowired;
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+import org.springframework.stereotype.Service;
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+
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+import java.math.BigDecimal;
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+import java.math.RoundingMode;
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+import java.util.*;
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+import java.util.stream.Collectors;
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+
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+import static com.tzld.piaoquan.recommend.server.service.flowpool.FlowPoolConstants.KEY_WITH_LEVEL_FORMAT;
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+
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+/**
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+ * @author zhangbo
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+ */
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+@Service
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+@Slf4j
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+public class FlowPoolWithLevelRecallStrategyTomsonFilterDigit extends AbstractFlowPoolWithLevelRecallStrategy {
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+
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+ @Autowired
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+ private FlowPoolConfigService flowPoolConfigService;
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+
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+ @Override
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+ Pair<String, String> flowPoolKeyAndLevel(RecallParam param) {
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+ //# 1. 获取流量池各层级分发概率权重
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+ Map<String, Double> levelWeightMap = flowPoolConfigService.getLevelWeight();
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+
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+ // 2. 判断各层级是否有视频需分发
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+ List<LevelWeight> availableLevels = new ArrayList<>();
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+ for (Map.Entry<String, Double> entry : levelWeightMap.entrySet()) {
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+ String levelKey = String.format(KEY_WITH_LEVEL_FORMAT, param.getAppType(), entry.getKey());
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+ if (Boolean.TRUE.equals(redisTemplate.hasKey(levelKey))) {
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+ LevelWeight lw = new LevelWeight();
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+ lw.setLevel(entry.getKey());
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+ lw.setLevelKey(levelKey);
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+ lw.setWeight(entry.getValue());
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+ availableLevels.add(lw);
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+ }
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+ }
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+ if (CollectionUtils.isEmpty(availableLevels)) {
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+ return Pair.of("", "");
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+ }
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+
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+ // 3. 根据可分发层级权重设置分发概率
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+ availableLevels.sort(Comparator.comparingDouble(LevelWeight::getWeight));
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+
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+ double weightSum = availableLevels.stream().mapToDouble(o -> o.getWeight()).sum();
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+ BigDecimal weightSumBD = new BigDecimal(weightSum);
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+ double level_p_low = 0;
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+ double weight_temp = 0;
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+ double level_p_up = 0;
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+ Map<String, LevelP> level_p_mapping = new HashMap<>();
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+ for (LevelWeight lw : availableLevels) {
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+ BigDecimal bd = new BigDecimal(weight_temp + lw.getWeight());
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+ level_p_up = bd.divide(weightSumBD, 2, RoundingMode.HALF_UP).doubleValue();
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+ LevelP levelP = new LevelP();
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+ levelP.setMin(level_p_low);
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+ levelP.setMax(level_p_up);
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+ levelP.setLevelKey(lw.getLevelKey());
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+ level_p_mapping.put(lw.level, levelP);
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+ level_p_low = level_p_up;
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+
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+ weight_temp += lw.getWeight();
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+ }
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+
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+ // 4. 随机生成[0,1)之间数，返回相应概率区间的key
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+ double random_p = RandomUtils.nextDouble(0, 1);
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+ for (Map.Entry<String, LevelP> entry : level_p_mapping.entrySet()) {
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+ if (random_p >= entry.getValue().getMin()
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+ && random_p <= entry.getValue().getMax()) {
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+ return Pair.of(entry.getValue().getLevelKey(), entry.getKey());
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+ }
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+ }
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+ return Pair.of("", "");
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+ }
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+
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+ @Data
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+ static class LevelWeight {
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+ private String level;
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+ private String levelKey;
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+ private Double weight;
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+ }
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+
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+ @Data
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+ static class LevelP {
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+ private String levelKey;
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+ private double min;
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+ private double max;
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+ }
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+
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+ @Override
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+ public String pushFrom() {
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+ return FlowPoolConstants.PUSH_FORM;
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+ }
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+
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+ @Override
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+ public List<Video> recall(RecallParam param) {
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+ Pair<String, String> flowPoolKeyAndLevel = flowPoolKeyAndLevel(param);
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+ String flowPoolKey = flowPoolKeyAndLevel.getLeft();
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+ String level = flowPoolKeyAndLevel.getRight();
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+ List<String> data = Objects.requireNonNull(redisTemplate.opsForSet().members(flowPoolKey)).stream().filter(o ->
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+ NumberUtils.toLong(o.split("-")[0], 0) % 10 == param.getLastDigit()).distinct().collect(Collectors.toList());
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+
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+ if (CollectionUtils.isEmpty(data)) {
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+ return null;
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+ }
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+ Map<String, String> videoFlowPoolMap = new LinkedHashMap<>();
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+ Map<Long, String> videoFlowPoolMap_ = new LinkedHashMap<>();
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+ for (String value : data) {
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+ String[] values = value.split("-");
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+ videoFlowPoolMap.put(values[0], values[1]);
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+ videoFlowPoolMap_.put(NumberUtils.toLong(values[0], 0), values[1]);
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+ }
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+ ScorerPipeline4Recall pipeline = ScorerUtils.getScorerPipeline4Recall("feeds_recall_config_tomson.conf");
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+ List<List<Pair<Long, Double>>> results = pipeline.recall(videoFlowPoolMap);
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+ List<Pair<Long, Double>> result = results.get(0);
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+ Map<Long, Double> resultmap = result.stream()
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+ .collect(Collectors.toMap(
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+ Pair::getLeft, // 键是Pair的left值
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+ Pair::getRight, // 值是Pair的right值
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+ (existingValue, newValue) -> existingValue, // 如果键冲突，选择保留现有的值（或者你可以根据需要定义其他合并策略）
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+ LinkedHashMap::new // 使用LinkedHashMap来保持插入顺序（如果需要的话）
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+ ));
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+ // 3 召回内部过滤
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+ FilterParam filterParam = FilterParamFactory.create(param, result.stream()
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+ .map(Pair::getLeft)
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+ .collect(Collectors.toList()));
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+ filterParam.setForceTruncation(10000);
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+ filterParam.setConcurrent(true);
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+ filterParam.setNotUsePreView(false);
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+ FilterResult filterResult = filterService.filter(filterParam);
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+ List<Video> videosResult = new ArrayList<>();
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+ if (filterResult != null && CollectionUtils.isNotEmpty(filterResult.getVideoIds())) {
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+ filterResult.getVideoIds().forEach(vid -> {
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+ Video recallData = new Video();
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+ recallData.setVideoId(vid);
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+ recallData.setAbCode(param.getAbCode());
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+ recallData.setRovScore(resultmap.getOrDefault(vid, 0.0));
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+ recallData.setPushFrom(pushFrom());
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+ recallData.setFlowPool(videoFlowPoolMap_.get(vid));
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+ recallData.setFlowPoolAbtestGroup(param.getFlowPoolAbtestGroup());
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+ recallData.setLevel(level);
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+ videosResult.add(recallData);
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+ });
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+ }
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+ videosResult.sort(Comparator.comparingDouble(o -> -o.getRovScore()));
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+ return videosResult;
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+ }
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+}
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zhangbo