flink sink to redis

不多bb!
先看RedisCommand设置数据结构类型时和redis结构对应关系。

Data Type	Redis Command [Sink]
HASH	HSET
LIST	RPUSH, LPUSH
SET	SADD
PUBSUB	PUBLISH
STRING	SET
HYPER_LOG_LOG	PFADD
SORTED_SET	ZADD
SORTED_SET	ZREM

具体的操作类：

    package sink;
    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.datastream.SingleOutputStreamOperator;
    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{
            String hostname="hadoop01";
            String delimiter="\n";
            StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
            DataStreamSource<String> text = env.socketTextStream(hostname, 9000, delimiter);
            DataStream<Tuple2<String, String>> list_wordData = text.map(new MapFunction<String, Tuple2<String, String>>() {
                public Tuple2<String, String> map(String value) throws Exception {
                    return new Tuple2<>("list_word", value);
                }
            });
    
            //创建redis的配置
            FlinkJedisPoolConfig conf = new FlinkJedisPoolConfig.Builder().setHost(hostname).setPort(6379).build();
            //
            RedisSink<Tuple2<String, String>> redisSink = new RedisSink<Tuple2<String, String>>(conf, new MyRedisMapper());
            list_wordData.addSink(redisSink);
            env.execute("sink redis");
        }
        public static class MyRedisMapper implements RedisMapper<Tuple2<String, String>>{
    		//操作redis时选择的数据类型
            public RedisCommandDescription getCommandDescription() {
                return new RedisCommandDescription(RedisCommand.LPUSH);
            }
            //表示接受的数据中获取需要操作的redis的key值
            public String getKeyFromData(Tuple2<String, String> data) {
                return data.f0;
            }
            //表示接受的数据中获取需要操作的redis的value值
            public String getValueFromData(Tuple2<String, String> data) {
                return data.f1;
            }
        }
    
        /**
         * 结果为：
         * 192.168.189.128:6379> flushall
         * OK
         * 192.168.189.128:6379> lrange list_word 0 -1
         * 1) "ss"
         * 2) "rr"
         * 3) "ww"
         * 192.168.189.128:6379>
         */
    }