比例分成算法--java_派单根据比例算法代码实现

关于业绩分配，常常会出现几家公司或者几个人合作的情况，那么合作之后创造出来的业绩价值如何分配的呢？有可能是1:1或者3:7.或者是3:3:4等等。那么我们针对这种情况就设计出来了一套比例分成系统。

代码如下所示：

主代码：

package com.handler.mark.cardperformance;
 
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.dataplatform.dto.base.IBaseOrgDTO;
import com.dataplatform.enums.DimensionChannelGroupEnum;
import com.dataplatform.model.ApplyDetailInfo;
import com.dataplatform.util.MarkByProportionUtil;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import redis.clients.jedis.ShardedJedis;
import redis.clients.jedis.ShardedJedisPool;
 
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.List;
 
/**
 * Created by on 2018/7/20.
 */
 
/**
 * 比例分成算法
 * @author 
 * @date 2018-07-26
 * @version 1.0
 *
 */
public class WeightRoundRobinBo {
 
    private static final int DEF_CURRENT_INDEX = -1;
    private static final int DEF_CURRENT_WEIGHT = 0;
 
    private static final String KEY_CURRENT_INDEX = "currentIndex";
    private static final String KEY_CURRENT_WEIGHT = "currentWeight";
 
    private Logger LOG = LoggerFactory.getLogger(WeightRoundRobinBo.class);
 
    private ShardedJedisPool shardedJedisPool;
 
    @SuppressWarnings("unused")
	private WeightRoundRobinBo() {
    }
 
    /**
     * 自定义构造方法
     * @param orgListOfChannel 渠道所对应机构列表
     * @param currentEnum
     * @param applyDetailInfo    当前进件信息
     * @param shardedJedisPool
     */
    public WeightRoundRobinBo(List<? extends IBaseOrgDTO> orgListOfChannel, DimensionChannelGroupEnum currentEnum, ApplyDetailInfo applyDetailInfo, ShardedJedisPool shardedJedisPool) {
        this.orgListOfChannel = orgListOfChannel;
        this.shardedJedisPool = shardedJedisPool;
        try(ShardedJedis jedis = shardedJedisPool.getResource()){
 
 
            /** 持卡用户进件与新用户进件分开打标*/
            this.redisKey = MarkByProportionUtil.getRedisKeyOfCurrentWight(
                    currentEnum.getDimensionCode(),
                    currentEnum.getChannelGroupCode(),
                    applyDetailInfo.getSource(),
                    applyDetailInfo.getIsCardHolder()
            );
 
            if(StringUtils.isBlank(redisKey)){
                throw new RuntimeException("illegal parameters: redisKey is null");
            }
 
            JSONObject json = JSON.parseObject(jedis.get(this.redisKey));
 
            String currentIndexStr = json == null ? null : json.getString(KEY_CURRENT_INDEX);
            String currentWeightStr = json == null ? null : json.getString(KEY_CURRENT_WEIGHT);
 
            this.currentIndex = StringUtils.isNumeric(currentIndexStr) ? Integer.parseInt(currentIndexStr) : DEF_CURRENT_INDEX;
            this.currentWeight = StringUtils.isNumeric(currentWeightStr) ? Integer.parseInt(currentWeightStr) : DEF_CURRENT_WEIGHT;
            this.orgCount = orgListOfChannel.size();
            this.maxWeight = greatestWeight();
            this.gcdWeight = greatestCommonDivisor();
 
 
            this.initStatus = true;
 
        }catch (Exception e){
            LOG.error("WeightRoundRobin init error: ", e);
        }
    }
 
    /**
     * 上次选择机构
     */
    private int currentIndex = DEF_CURRENT_INDEX;
    /**
     * 当前调度的权值
     */
    private int currentWeight = DEF_CURRENT_WEIGHT;
    /**
     * 最大权重
     */
    private int maxWeight;
    /**
     * 权重的最大公约数
     */
    private int gcdWeight;
    /**
     * 机构数量
     */
    private int orgCount;
 
    private List<? extends IBaseOrgDTO> orgListOfChannel = new ArrayList<>();
 
    /**
     * redis上保存当前index和weight的key
     */
    private String redisKey;
 
    /**
     * 是否初始化
     */
    private boolean initStatus = false;
 
    /**
     * 获取两个数的最大公约数
     */
    private int greaterCommonDivisor(int a, int b) {
        BigInteger aBig = new BigInteger(String.valueOf(a));
        BigInteger bBig = new BigInteger(String.valueOf(b));
        return aBig.gcd(bBig).intValue();
    }
 
    /**
     * 遍历获取所有机构比例的最大公约数
     */
    private int greatestCommonDivisor() {
        int divisor = 0;
        for (int index = 0, len = orgListOfChannel.size(); index < len - 1; index++) {
            if (index == 0) {
                divisor = greaterCommonDivisor(
                        orgListOfChannel.get(index).getProportion(), orgListOfChannel.get(index + 1).getProportion());
            } else {
                divisor = greaterCommonDivisor(divisor, orgListOfChannel.get(index).getProportion());
            }
        }
        return divisor;
    }
 
    /**
     * 遍历获取最大的机构占比（权重）
     */
    private int greatestWeight() {
        int weight = 0;
        for (IBaseOrgDTO orgObj : orgListOfChannel) {
            if (weight < orgObj.getProportion()) {
                weight = orgObj.getProportion();
            }
        }
        return weight;
    }
 
    /**
     * 根据权重轮询获取当前org
     *
     * @gcdWeight 权重的最大公约数
     * @currentIndex 用于记录当前轮询链表的位置
     * @currentWeight 用于记录当前权重值
     * @orgListOfChannel 用于当前进件的渠道所对应的分成机构列表
     *
     *
     * 初始从最大的权重（占比）进行分配 currentWeight = maxWeight
     *
     * 非初始情况，根据redis缓存中保存的位置currentIndex和currentWeight继续分配
     *
     * 遍历机构列表，每次遍历输出大于等于currentWeight的机构对象
     *
     * 每次遍历完，将currentWeight减去 所有机构权重值的最大公约数，再次遍历输出
     *
     * 直到currentWeight小于等于零，即完成了一遍权重轮询，每一个权重值都输出了对应比例的次数
     *
     *
     */
	private IBaseOrgDTO getOrgInfo() {
        while (true) {
            currentIndex = (currentIndex + 1) % orgCount;
            if (currentIndex == 0) {
                currentWeight = currentWeight - gcdWeight;
                if (currentWeight <= 0) {
                    currentWeight = maxWeight;
                    if (currentWeight == 0) {
                        return null;
                    }
                }
            }
            if (orgListOfChannel.get(currentIndex).getProportion() >= currentWeight) {
                return orgListOfChannel.get(currentIndex);
            }
        }
    }
 
    /**
     * 输出org后，将currentIndex和currentWeight更新到redis上
     */
    private void updateRedis(){
        JSONObject json = new JSONObject();
        json.put(KEY_CURRENT_INDEX, currentIndex);
        json.put(KEY_CURRENT_WEIGHT, currentWeight);
 
        try(ShardedJedis jedis = shardedJedisPool.getResource()){
            jedis.set(this.redisKey, json.toJSONString());
        }catch (Exception e){
            LOG.error("updateRedis error: ", e);
        }
 
    }
 
    public IBaseOrgDTO execute(){
        IBaseOrgDTO org = null;
        if(initStatus) {
        	org = getOrgInfo();
            updateRedis();
        }
        return org;
    }
 
}

package com.cmbc.util;
 
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
 
/**
 * Created by on 2018/8/13.
 */
public class MarkByProportionUtil {
 
    private static Logger LOG = LoggerFactory.getLogger(MarkByProportionUtil.class);
 
    /**
     * 比例打标redis key前缀
     */
    public static final String REDIS_KEY_PREFIX = "WSDP_index&weight";
 
    /**
     * 比例打标redis key分隔符
     */
    public static final String REDIS_KEY_SEPARATOR = ":";
 
    public static String getRedisKeyOfCurrentWight(String dimensionCode, String channelGroupCode, String channel, int isCardHolder) {
 
        if (StringUtils.isAnyBlank(dimensionCode, channelGroupCode, channel)) {
            LOG.error("illegal parameters:  dimensionCode:{},  channelGroupCode:{},  channel:{}", dimensionCode, channelGroupCode, channel);
        }
 
        /** 固定前缀 + 维度code + 渠道组code + 渠道代码 +　是否持卡人　*/
        String key = new StringBuffer()
                .append(REDIS_KEY_PREFIX)
                .append(REDIS_KEY_SEPARATOR)
                .append(dimensionCode)
                .append(REDIS_KEY_SEPARATOR)
                .append(channelGroupCode)
                .append(REDIS_KEY_SEPARATOR)
                .append(channel)
                .append("_")
                .append(isCardHolder)
                .toString();
 
        return key;
    }
}

package com.cmbc.dto.base;
 
/**
 * Created by on 2018/7/22.
 */
public interface  IBaseOrgDTO {
 
	/**
	 * 获取机构id
	 * @return
	 */
    public abstract Integer getOrgId();
 
    /**
     * 获取比例
     * @return
     */
    public abstract Integer getProportion();
 
    /**
     * 获取机构类型
     * @return
     */
    public abstract String getOrgType();
}

调用方法：

/** 按比例分成 */
WeightRoundRobinBo wrr = new WeightRoundRobinBo(orgList, rule, applyDetailInfo,
      cacheService.getShardedJedisPool());
 
org = wrr.execute();
if (null == org) {
 
   LOG.error(ErrorEnums.ERR_10013.getMsg());
   return ErrorEnums.ERR_10013.getMsg();
 
}