package cn.edu.tju.demo;

import org.apache.flink.api.common.functions.*;
import org.apache.flink.api.common.serialization.SimpleStringSchema;
import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.collector.selector.OutputSelector;
import org.apache.flink.streaming.api.datastream.*;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.co.CoMapFunction;
import org.apache.flink.streaming.api.functions.source.SourceFunction;
import org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer;
import org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer;
import org.apache.flink.util.Collector;
import org.apache.kafka.clients.consumer.ConsumerConfig;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.common.serialization.StringDeserializer;
import org.apache.kafka.common.serialization.StringSerializer;

import java.util.*;

public class Test13 {
    public static void main(String[] args) throws Exception {
        StreamExecutionEnvironment environment = StreamExecutionEnvironment
                .getExecutionEnvironment();
/*        Properties properties  = new Properties();
        properties.setProperty(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());
        properties.setProperty(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());
        properties.setProperty(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,"xx.xx.xx.xx:9092");*/


        DataStreamSource<String> mySource = environment.addSource(new MySourceFunction());

        mySource.addSink(new FlinkKafkaProducer<String>(
                "xx.xx.xx.xx:9092","myTopic",new SimpleStringSchema( )));

        environment.execute("my job");

    }





    public static class MySourceFunction implements SourceFunction<String> {
        private boolean runningFlag = true;
        @Override
        public void run(SourceContext<String> ctx) throws Exception {
            while (runningFlag){
                ctx.collect("hi world");
                ctx.collect("hello world");
                Thread.sleep(30000);
            }
        }

        @Override
        public void cancel() {
            runningFlag = false;
        }
    }
}