package org.hongxi.whatsmars.kafka.examples;

import org.apache.kafka.clients.producer.*;
import org.apache.kafka.common.serialization.IntegerSerializer;
import org.apache.kafka.common.serialization.StringSerializer;

import java.util.Properties;
import java.util.concurrent.ExecutionException;

public class Producer extends Thread {
    private final KafkaProducer<Integer, String> producer;
    private final String topic;
    private final Boolean isAsync;

    public Producer(String topic, Boolean isAsync) {
        Properties props = new Properties();
        props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, KafkaProperties.KAFKA_SERVER_URL + ":" + KafkaProperties.KAFKA_SERVER_PORT);
        props.put(ProducerConfig.CLIENT_ID_CONFIG, "DemoProducer");
        props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, IntegerSerializer.class.getName());
        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());
        producer = new KafkaProducer<>(props);
        this.topic = topic;
        this.isAsync = isAsync;
    }

    public void run() {
        int messageNo = 1;
        while (true) {
            String messageStr = "Message_" + messageNo;
            long startTime = System.currentTimeMillis();
            if (isAsync) { // Send asynchronously
                producer.send(new ProducerRecord<>(topic,
                    messageNo,
                    messageStr), new DemoCallBack(startTime, messageNo, messageStr));
            } else { // Send synchronously
                try {
                    producer.send(new ProducerRecord<>(topic,
                        messageNo,
                        messageStr)).get();
                    System.out.println("Sent message: (" + messageNo + ", " + messageStr + ")");
                } catch (InterruptedException | ExecutionException e) {
                    e.printStackTrace();
                }
            }
            ++messageNo;
        }
    }
}
