流计算新年促销

import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.windowing.time.Time;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.api.common.functions.MapFunction;

public class StreamingJob {
    public static void main(String[] args) throws Exception {
        final StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

        DataStream<String> text = env.socketTextStream("localhost", 9999);

        DataStream<Integer> counts = text.map(new MapFunction<String, Integer>() {
            public Integer map(String value) {
                return Integer.parseInt(value);
            }
        }).timeWindowAll(Time.minutes(1)).sum(0);

        counts.print();

        env.execute("Streaming Job");
    }
}