package resa.evaluation.tools;
import redis.clients.jedis.Jedis;
import resa.util.ConfigUtil;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Map;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
/**
* Created by ding on 14-6-17.
*/
public class TweetsSimulator {
private static final String END = new String("end");
private String host;
private int port;
private String queueName;
private double speedRatio;
private long counter = 0;
private BlockingQueue<String> dataQueue = new ArrayBlockingQueue<>(10000);
public TweetsSimulator(Map<String, Object> conf, double speedRatio) {
this.host = (String) conf.get("redis.host");
this.port = ((Number) conf.get("redis.port")).intValue();
this.queueName = (String) conf.get("redis.queue");
this.speedRatio = speedRatio;
}
public TweetsSimulator(Map<String, Object> conf) {
this(conf, 1);
}
public void setSpeedRatio(double speedRatio) {
this.speedRatio = speedRatio;
}
private class PushThread extends Thread {
private Jedis jedis = new Jedis(host, port);
@Override
public void run() {
String line = null;
try {
while ((line = dataQueue.take()) != END) {
jedis.rpush(queueName, line);
}
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
dataQueue.offer(END);
}
}
}
public void start(Path input) {
for (int i = 0; i < 3; i++) {
new PushThread().start();
}
if (Files.isDirectory(input)) {
try {
Files.list(input).forEach(f -> start0(f));
} catch (IOException e) {
}
} else {
start0(input);
}
try {
dataQueue.put(END);
} catch (InterruptedException e) {
}
}
private static long currTimeSecs() {
return System.currentTimeMillis() / 1000;
}
private long parseTimeSecs(String time) {
try {
return (long) (Long.parseLong(time) / speedRatio);
} catch (Exception e) {
return -1;
}
}
private void start0(Path inputFile) {
long start = currTimeSecs();
long firstSec = 0;
String line = null;
try (BufferedReader reader = Files.newBufferedReader(inputFile)) {
while ((line = reader.readLine()) != null) {
int split = line.indexOf('@');
long sec;
String data;
if (split < 0 || (sec = parseTimeSecs(line.substring(0, split))) < 0) {
data = line;
} else {
if (firstSec == 0) {
firstSec = sec;
} else {
while (sec - firstSec > currTimeSecs() - start) {
Thread.sleep(5);
}
}
data = line.substring(split + 1);
}
dataQueue.put(data);
counter++;
if (counter % 10000 == 0) {
System.out.println("Finished " + counter + " lines");
}
}
} catch (Exception e) {
System.out.println(line);
e.printStackTrace();
}
}
public static void main(String[] args) throws IOException {
if (args.length < 2) {
System.out.println("usage: DataSender <confFile> <inputFile> [speedRatio]");
return;
}
TweetsSimulator simulator = new TweetsSimulator(ConfigUtil.readConfig(new File(args[0])));
if (args.length == 3) {
simulator.setSpeedRatio(Double.parseDouble(args[2]));
}
System.out.println("start simulator");
Path dataFile = Paths.get(args[1]);
simulator.start(dataFile);
System.out.println("end simulator");
}
}