package com.lin.flink.stream.customPartition;

import org.apache.flink.api.common.functions.MapFunction;

import org.apache.flink.api.java.tuple.Tuple2;

import org.apache.flink.streaming.api.datastream.DataStream;

import org.apache.flink.streaming.api.datastream.DataStreamSource;

import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;

import org.apache.flink.streaming.connectors.redis.RedisSink;

import org.apache.flink.streaming.connectors.redis.common.config.FlinkJedisPoolConfig;

import org.apache.flink.streaming.connectors.redis.common.mapper.RedisCommand;

import org.apache.flink.streaming.connectors.redis.common.mapper.RedisCommandDescription;

import org.apache.flink.streaming.connectors.redis.common.mapper.RedisMapper;

public class StreamingDemoToRedis {

    public static void main(String[] args) throws Exception{

        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

        DataStreamSource<String> text = env.socketTextStream("node1", 9000, "\n");

        //lpsuh l_words word

        //对数据进行组装,把string转化为tuple2<String,String>

        DataStream<Tuple2<String, String>> l_wordsData = text.map(new MapFunction<String, Tuple2<String, String>>() {

            @Override

            public Tuple2<String, String> map(String value) throws Exception {

                return new Tuple2<String, String>("l_words", value);

            }

        });

        //创建redis的配置

        FlinkJedisPoolConfig conf = new FlinkJedisPoolConfig.Builder().setHost("node1").setPort(6379).build();

        //创建redissink

        RedisSink<Tuple2<String, String>> redisSink = new RedisSink<Tuple2<String, String>>(conf, new MyRedisMapper());

        l_wordsData.addSink(redisSink);

        env.execute("StreamingDemoToRedis");

    }

    public static class MyRedisMapper implements RedisMapper<Tuple2<String, String>> {

        //表示从接收的数据中获取需要操作的redis key

        @Override

        public String getKeyFromData(Tuple2<String, String> data) {

            return data.f0;

        }

        //表示从接收的数据中获取需要操作的redis value

        @Override

        public String getValueFromData(Tuple2<String, String> data) {

            return data.f1;

        }

        @Override

        public RedisCommandDescription getCommandDescription() {

            return new RedisCommandDescription(RedisCommand.LPUSH);

        }

    }

}