Example usage for java.util.concurrent ExecutorService awaitTermination

List of usage examples for java.util.concurrent ExecutorService awaitTermination

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Introduction

In this page you can find the example usage for java.util.concurrent ExecutorService awaitTermination.

Prototype

boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException;

Source Link

Document

Blocks until all tasks have completed execution after a shutdown request, or the timeout occurs, or the current thread is interrupted, whichever happens first.

Usage

From source file:com.mgmtp.perfload.core.daemon.LtDaemon.java

public static void main(final String... args) {
    JCommander jCmd = null;//  w  ww .  ja va2 s .c o m
    try {
        LtDaemonArgs cliArgs = new LtDaemonArgs();
        jCmd = new JCommander(cliArgs);
        jCmd.parse(args);

        log().info("Starting perfLoad Daemon...");
        log().info(cliArgs.toString());

        if (cliArgs.shutdown) {
            shutdownDaemon(cliArgs.port);
            System.exit(0);
        }

        // Client is expected next to the daemon
        File clientDir = new File(new File(System.getProperty("user.dir")).getParentFile(), "client");
        ExecutorService execService = Executors.newCachedThreadPool();
        StreamGobbler gobbler = new StreamGobbler(execService);
        Server server = new DefaultServer(cliArgs.port);
        LtDaemon daemon = new LtDaemon(clientDir, new ForkedProcessClientRunner(execService, gobbler), server);
        daemon.execute();
        execService.shutdown();
        execService.awaitTermination(10L, TimeUnit.SECONDS);
        System.exit(0);
    } catch (ParameterException ex) {
        jCmd.usage();
        System.exit(1);
    } catch (Exception ex) {
        log().error(ex.getMessage(), ex);
        System.exit(-1);
    }
}

From source file:async.nio2.Main.java

public static void main(String[] args) throws IOException, InterruptedException, ExecutionException {

    if (args.length == 3) {
        PORT = Integer.valueOf(args[0]);
        NO_CLIENTS = Integer.valueOf(args[1]);
        NO_SAMPLES = Integer.valueOf(args[2]);
    }/*from  w  w w . ja v a  2s  . c o  m*/

    if (PORT < 0) {
        System.err.println("Error: port < 0");
        System.exit(1);
    }

    if (NO_CLIENTS < 1) {
        System.err.println("Error: #clients < 1");
        System.exit(1);
    }

    if (NO_SAMPLES < 1) {
        System.err.println("Error: #samples < 1");
        System.exit(1);
    }

    AsynchronousChannelGroup groupServer = AsynchronousChannelGroup
            .withThreadPool(Executors.newFixedThreadPool(1));
    AsynchronousChannelGroup groupClient = AsynchronousChannelGroup
            .withThreadPool(Executors.newFixedThreadPool(1));

    Server server = Server.newInstance(new InetSocketAddress("localhost", PORT), groupServer);
    InetSocketAddress localAddress = server.getLocalAddress();
    String hostname = localAddress.getHostName();
    int port = localAddress.getPort();

    ExecutorService es = Executors.newFixedThreadPool(2);

    System.out.printf("%03d clients on %s:%d, %03d runs each. All times in s.%n", NO_CLIENTS, hostname, port,
            NO_SAMPLES);
    range(0, NO_CLIENTS).unordered().parallel()
            .mapToObj(i -> CompletableFuture.supplyAsync(newClient(localAddress, groupClient), es).join())
            .map(array -> Arrays.stream(array).reduce(new DescriptiveStatistics(), Main::accumulate,
                    Main::combine))
            .map(Main::toEvaluationString).forEach(System.out::println);

    es.shutdown();
    es.awaitTermination(5, TimeUnit.SECONDS);

    groupClient.shutdown();
    groupClient.awaitTermination(5, TimeUnit.SECONDS);

    server.close();
    groupServer.shutdown();
    groupServer.awaitTermination(5, TimeUnit.SECONDS);
}

From source file:fr.tpt.s3.mcdag.bench.MainBench.java

public static void main(String[] args) throws IOException, InterruptedException {

    // Command line options
    Options options = new Options();

    Option input = new Option("i", "input", true, "MC-DAG XML models");
    input.setRequired(true);//from w  ww . ja  v a 2 s.  co  m
    input.setArgs(Option.UNLIMITED_VALUES);
    options.addOption(input);

    Option output = new Option("o", "output", true, "Folder where results have to be written.");
    output.setRequired(true);
    options.addOption(output);

    Option uUti = new Option("u", "utilization", true, "Utilization.");
    uUti.setRequired(true);
    options.addOption(uUti);

    Option output2 = new Option("ot", "output-total", true, "File where total results are being written");
    output2.setRequired(true);
    options.addOption(output2);

    Option oCores = new Option("c", "cores", true, "Cores given to the test");
    oCores.setRequired(true);
    options.addOption(oCores);

    Option oLvls = new Option("l", "levels", true, "Levels tested for the system");
    oLvls.setRequired(true);
    options.addOption(oLvls);

    Option jobs = new Option("j", "jobs", true, "Number of threads to be launched.");
    jobs.setRequired(false);
    options.addOption(jobs);

    Option debug = new Option("d", "debug", false, "Debug logs.");
    debug.setRequired(false);
    options.addOption(debug);

    /*
     * Parsing of the command line
     */
    CommandLineParser parser = new DefaultParser();
    HelpFormatter formatter = new HelpFormatter();
    CommandLine cmd;

    try {
        cmd = parser.parse(options, args);
    } catch (ParseException e) {
        System.err.println(e.getMessage());
        formatter.printHelp("Benchmarks MultiDAG", options);
        System.exit(1);
        return;
    }

    String inputFilePath[] = cmd.getOptionValues("input");
    String outputFilePath = cmd.getOptionValue("output");
    String outputFilePathTotal = cmd.getOptionValue("output-total");
    double utilization = Double.parseDouble(cmd.getOptionValue("utilization"));
    boolean boolDebug = cmd.hasOption("debug");
    int nbLvls = Integer.parseInt(cmd.getOptionValue("levels"));
    int nbJobs = 1;
    int nbFiles = inputFilePath.length;

    if (cmd.hasOption("jobs"))
        nbJobs = Integer.parseInt(cmd.getOptionValue("jobs"));

    int nbCores = Integer.parseInt(cmd.getOptionValue("cores"));

    /*
     *  While files need to be allocated
     *  run the tests in the pool of threads
     */

    // For dual-criticality systems we call a specific thread
    if (nbLvls == 2) {

        System.out.println(">>>>>>>>>>>>>>>>>>>>> NB levels " + nbLvls);

        int i_files2 = 0;
        String outFile = outputFilePath.substring(0, outputFilePath.lastIndexOf('.'))
                .concat("-schedulability.csv");
        PrintWriter writer = new PrintWriter(outFile, "UTF-8");
        writer.println(
                "Thread; File; FSched (%); FPreempts; FAct; LSched (%); LPreempts; LAct; ESched (%); EPreempts; EAct; HSched(%); HPreempts; HAct; Utilization");
        writer.close();

        ExecutorService executor2 = Executors.newFixedThreadPool(nbJobs);
        while (i_files2 != nbFiles) {
            BenchThreadDualCriticality bt2 = new BenchThreadDualCriticality(inputFilePath[i_files2], outFile,
                    nbCores, boolDebug);

            executor2.execute(bt2);
            i_files2++;
        }

        executor2.shutdown();
        executor2.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);

        int fedTotal = 0;
        int laxTotal = 0;
        int edfTotal = 0;
        int hybridTotal = 0;
        int fedPreempts = 0;
        int laxPreempts = 0;
        int edfPreempts = 0;
        int hybridPreempts = 0;
        int fedActiv = 0;
        int laxActiv = 0;
        int edfActiv = 0;
        int hybridActiv = 0;
        // Read lines in file and do average
        int i = 0;
        File f = new File(outFile);
        @SuppressWarnings("resource")
        Scanner line = new Scanner(f);
        while (line.hasNextLine()) {
            String s = line.nextLine();
            if (i > 0) { // To skip the first line
                try (Scanner inLine = new Scanner(s).useDelimiter("; ")) {
                    int j = 0;

                    while (inLine.hasNext()) {
                        String val = inLine.next();
                        if (j == 2) {
                            fedTotal += Integer.parseInt(val);
                        } else if (j == 3) {
                            fedPreempts += Integer.parseInt(val);
                        } else if (j == 4) {
                            fedActiv += Integer.parseInt(val);
                        } else if (j == 5) {
                            laxTotal += Integer.parseInt(val);
                        } else if (j == 6) {
                            laxPreempts += Integer.parseInt(val);
                        } else if (j == 7) {
                            laxActiv += Integer.parseInt(val);
                        } else if (j == 8) {
                            edfTotal += Integer.parseInt(val);
                        } else if (j == 9) {
                            edfPreempts += Integer.parseInt(val);
                        } else if (j == 10) {
                            edfActiv += Integer.parseInt(val);
                        } else if (j == 11) {
                            hybridTotal += Integer.parseInt(val);
                        } else if (j == 12) {
                            hybridPreempts += Integer.parseInt(val);
                        } else if (j == 13) {
                            hybridActiv += Integer.parseInt(val);
                        }
                        j++;
                    }
                }
            }
            i++;
        }

        // Write percentage
        double fedPerc = (double) fedTotal / nbFiles;
        double laxPerc = (double) laxTotal / nbFiles;
        double edfPerc = (double) edfTotal / nbFiles;
        double hybridPerc = (double) hybridTotal / nbFiles;

        double fedPercPreempts = (double) fedPreempts / fedActiv;
        double laxPercPreempts = (double) laxPreempts / laxActiv;
        double edfPercPreempts = (double) edfPreempts / edfActiv;
        double hybridPercPreempts = (double) hybridPreempts / hybridActiv;

        Writer wOutput = new BufferedWriter(new FileWriter(outputFilePathTotal, true));
        wOutput.write(Thread.currentThread().getName() + "; " + utilization + "; " + fedPerc + "; "
                + fedPreempts + "; " + fedActiv + "; " + fedPercPreempts + "; " + laxPerc + "; " + laxPreempts
                + "; " + laxActiv + "; " + laxPercPreempts + "; " + edfPerc + "; " + edfPreempts + "; "
                + edfActiv + "; " + edfPercPreempts + "; " + hybridPerc + "; " + hybridPreempts + "; "
                + hybridActiv + "; " + hybridPercPreempts + "\n");
        wOutput.close();

    } else if (nbLvls > 2) {
        int i_files2 = 0;
        String outFile = outputFilePath.substring(0, outputFilePath.lastIndexOf('.'))
                .concat("-schedulability.csv");
        PrintWriter writer = new PrintWriter(outFile, "UTF-8");
        writer.println(
                "Thread; File; LSched (%); LPreempts; LAct; ESched (%); EPreempts; EAct; HSched(%); HPreempts; HAct; Utilization");
        writer.close();

        ExecutorService executor2 = Executors.newFixedThreadPool(nbJobs);
        while (i_files2 != nbFiles) {
            BenchThreadNLevels bt2 = new BenchThreadNLevels(inputFilePath[i_files2], outFile, nbCores,
                    boolDebug);

            executor2.execute(bt2);
            i_files2++;
        }

        executor2.shutdown();
        executor2.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);

        int laxTotal = 0;
        int edfTotal = 0;
        int hybridTotal = 0;
        int laxPreempts = 0;
        int edfPreempts = 0;
        int hybridPreempts = 0;
        int laxActiv = 0;
        int edfActiv = 0;
        int hybridActiv = 0;
        // Read lines in file and do average
        int i = 0;
        File f = new File(outFile);
        @SuppressWarnings("resource")
        Scanner line = new Scanner(f);
        while (line.hasNextLine()) {
            String s = line.nextLine();
            if (i > 0) { // To skip the first line
                try (Scanner inLine = new Scanner(s).useDelimiter("; ")) {
                    int j = 0;

                    while (inLine.hasNext()) {
                        String val = inLine.next();
                        if (j == 2) {
                            laxTotal += Integer.parseInt(val);
                        } else if (j == 3) {
                            laxPreempts += Integer.parseInt(val);
                        } else if (j == 4) {
                            laxActiv += Integer.parseInt(val);
                        } else if (j == 5) {
                            edfTotal += Integer.parseInt(val);
                        } else if (j == 6) {
                            edfPreempts += Integer.parseInt(val);
                        } else if (j == 7) {
                            edfActiv += Integer.parseInt(val);
                        } else if (j == 8) {
                            hybridTotal += Integer.parseInt(val);
                        } else if (j == 9) {
                            hybridPreempts += Integer.parseInt(val);
                        } else if (j == 10) {
                            hybridActiv += Integer.parseInt(val);
                        }
                        j++;
                    }
                }
            }
            i++;
        }

        // Write percentage
        double laxPerc = (double) laxTotal / nbFiles;
        double edfPerc = (double) edfTotal / nbFiles;
        double hybridPerc = (double) hybridTotal / nbFiles;

        double laxPercPreempts = (double) laxPreempts / laxActiv;
        double edfPercPreempts = (double) edfPreempts / edfActiv;
        double hybridPercPreempts = (double) hybridPreempts / hybridActiv;

        Writer wOutput = new BufferedWriter(new FileWriter(outputFilePathTotal, true));
        wOutput.write(Thread.currentThread().getName() + "; " + utilization + "; " + laxPerc + "; "
                + laxPreempts + "; " + laxActiv + "; " + laxPercPreempts + "; " + edfPerc + "; " + edfPreempts
                + "; " + edfActiv + "; " + edfPercPreempts + "; " + hybridPerc + "; " + hybridPreempts + "; "
                + hybridActiv + "; " + hybridPercPreempts + "\n");
        wOutput.close();

    } else {
        System.err.println("Wrong number of levels");
        System.exit(-1);
    }

    System.out.println("[BENCH Main] Done benchmarking U = " + utilization + " Levels " + nbLvls);
}

From source file:Test.java

public static void main(String args[]) throws Exception {
    ExecutorService pool = new ScheduledThreadPoolExecutor(3);
    AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(Paths.get("data.txt"),
            EnumSet.of(StandardOpenOption.READ), pool);
    CompletionHandler<Integer, ByteBuffer> handler = new CompletionHandler<Integer, ByteBuffer>() {
        public synchronized void completed(Integer result, ByteBuffer attachment) {
            for (int i = 0; i < attachment.limit(); i++) {
                System.out.print((char) attachment.get(i));
            }/*w w w. java2 s . co  m*/
        }

        public void failed(Throwable e, ByteBuffer attachment) {
        }
    };
    final int bufferCount = 5;
    ByteBuffer buffers[] = new ByteBuffer[bufferCount];
    for (int i = 0; i < bufferCount; i++) {
        buffers[i] = ByteBuffer.allocate(10);
        fileChannel.read(buffers[i], i * 10, buffers[i], handler);
    }
    pool.awaitTermination(1, TimeUnit.SECONDS);
    for (ByteBuffer byteBuffer : buffers) {
        for (int i = 0; i < byteBuffer.limit(); i++) {
            System.out.println((char) byteBuffer.get(i));
        }
    }
}

From source file:org.accelio.jxio.tests.benchmarks.jxioConnection.StreamClient.java

/**
 * @param args//  ww  w.  ja  va  2s.c o m
 */
public static void main(String[] args) {
    String uriString;
    URI uri;
    try {
        LOG.info("arguments = " + args[0] + " " + args[1] + " " + args[2] + " " + args[3] + " " + args[4]);
        ExecutorService es = Executors
                .newFixedThreadPool(Integer.parseInt(args[3]) + Integer.parseInt(args[4]));
        // input
        for (int i = 0; i < Integer.parseInt(args[3]); i++) {
            uriString = String.format("rdma://%s:%s/data?size=%s", args[0], args[1], args[2]);
            uri = new URI(uriString);
            es.submit(new StreamClient(uri, "input", i, Integer.parseInt(args[4])));
        }
        // output
        for (int i = 0; i < Integer.parseInt(args[4]); i++) {
            uriString = String.format("rdma://%s:%s/data?size=%s", args[0], args[1], args[2]);
            uri = new URI(uriString);
            es.submit(new StreamClient(uri, "output", i, Integer.parseInt(args[4])));
        }
        es.shutdown();
        es.awaitTermination(5, TimeUnit.MINUTES);
    } catch (URISyntaxException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

From source file:com.amazonaws.services.kinesis.samples.datavis.HttpReferrerStreamWriter.java

/**
 * Start a number of threads and send randomly generated {@link HttpReferrerPair}s to a Kinesis Stream until the
 * program is terminated.//  w  ww . j  a v  a  2s .  c  o m
 *
 * @param args Expecting 3 arguments: A numeric value indicating the number of threads to use to send
 *        data to Kinesis and the name of the stream to send records to, and the AWS region in which these resources
 *        exist or should be created.
 * @throws InterruptedException If this application is interrupted while sending records to Kinesis.
 */
public static void main(String[] args) throws InterruptedException {
    if (args.length != 3) {
        System.err.println("Usage: " + HttpReferrerStreamWriter.class.getSimpleName()
                + " <number of threads> <stream name> <region>");
        System.exit(1);
    }

    int numberOfThreads = Integer.parseInt(args[0]);
    String streamName = args[1];
    Region region = SampleUtils.parseRegion(args[2]);

    AWSCredentialsProvider credentialsProvider = new DefaultAWSCredentialsProviderChain();
    ClientConfiguration clientConfig = SampleUtils.configureUserAgentForSample(new ClientConfiguration());
    AmazonKinesis kinesis = new AmazonKinesisClient(credentialsProvider, clientConfig);
    kinesis.setRegion(region);

    // The more resources we declare the higher write IOPS we need on our DynamoDB table.
    // We write a record for each resource every interval.
    // If interval = 500ms, resource count = 7 we need: (1000/500 * 7) = 14 write IOPS minimum.
    List<String> resources = new ArrayList<>();
    resources.add("/index.html");

    // These are the possible referrers to use when generating pairs
    List<String> referrers = new ArrayList<>();
    referrers.add("http://www.amazon.com");
    referrers.add("http://www.google.com");
    referrers.add("http://www.yahoo.com");
    referrers.add("http://www.bing.com");
    referrers.add("http://www.stackoverflow.com");
    referrers.add("http://www.reddit.com");

    HttpReferrerPairFactory pairFactory = new HttpReferrerPairFactory(resources, referrers);

    // Creates a stream to write to with 2 shards if it doesn't exist
    StreamUtils streamUtils = new StreamUtils(kinesis);
    streamUtils.createStreamIfNotExists(streamName, 2);
    LOG.info(String.format("%s stream is ready for use", streamName));

    final HttpReferrerKinesisPutter putter = new HttpReferrerKinesisPutter(pairFactory, kinesis, streamName);

    ExecutorService es = Executors.newCachedThreadPool();

    Runnable pairSender = new Runnable() {
        @Override
        public void run() {
            try {
                putter.sendPairsIndefinitely(DELAY_BETWEEN_RECORDS_IN_MILLIS, TimeUnit.MILLISECONDS);
            } catch (Exception ex) {
                LOG.warn(
                        "Thread encountered an error while sending records. Records will no longer be put by this thread.",
                        ex);
            }
        }
    };

    for (int i = 0; i < numberOfThreads; i++) {
        es.submit(pairSender);
    }

    LOG.info(String.format("Sending pairs with a %dms delay between records with %d thread(s).",
            DELAY_BETWEEN_RECORDS_IN_MILLIS, numberOfThreads));

    es.shutdown();
    es.awaitTermination(Long.MAX_VALUE, TimeUnit.DAYS);
}

From source file:com.alertlogic.aws.kinesis.test1.StreamWriter.java

/**
 * Start a number of threads and send randomly generated {@link HttpReferrerPair}s to a Kinesis Stream until the
 * program is terminated.// w ww. j a v  a  2s.c om
 *
 * @param args Expecting 3 arguments: A numeric value indicating the number of threads to use to send
 *        data to Kinesis and the name of the stream to send records to, and the AWS region in which these resources
 *        exist or should be created.
 * @throws InterruptedException If this application is interrupted while sending records to Kinesis.
 */
public static void main(String[] args) throws InterruptedException {
    if (args.length != 3) {
        System.err.println(
                "Usage: " + StreamWriter.class.getSimpleName() + " <number of threads> <stream name> <region>");
        System.exit(1);
    }

    int numberOfThreads = Integer.parseInt(args[0]);
    String streamName = args[1];
    Region region = SampleUtils.parseRegion(args[2]);

    AWSCredentialsProvider credentialsProvider = new DefaultAWSCredentialsProviderChain();
    ClientConfiguration clientConfig = SampleUtils.configureUserAgentForSample(new ClientConfiguration());
    AmazonKinesis kinesis = new AmazonKinesisClient(credentialsProvider, clientConfig);
    kinesis.setRegion(region);

    // The more resources we declare the higher write IOPS we need on our DynamoDB table.
    // We write a record for each resource every interval.
    // If interval = 500ms, resource count = 7 we need: (1000/500 * 7) = 14 write IOPS minimum.
    List<String> resources = new ArrayList<>();
    resources.add("/index.html");

    // These are the possible referrers to use when generating pairs
    List<String> referrers = new ArrayList<>();
    referrers.add("http://www.amazon.com");
    referrers.add("http://www.google.com");
    referrers.add("http://www.yahoo.com");
    referrers.add("http://www.bing.com");
    referrers.add("http://www.stackoverflow.com");
    referrers.add("http://www.reddit.com");

    HttpReferrerPairFactory pairFactory = new HttpReferrerPairFactory(resources, referrers);

    // Creates a stream to write to with 2 shards if it doesn't exist
    StreamUtils streamUtils = new StreamUtils(kinesis);
    streamUtils.createStreamIfNotExists(streamName, 2);
    LOG.info(String.format("%s stream is ready for use", streamName));

    final HttpReferrerKinesisPutter putter = new HttpReferrerKinesisPutter(pairFactory, kinesis, streamName);

    ExecutorService es = Executors.newCachedThreadPool();

    Runnable pairSender = new Runnable() {
        @Override
        public void run() {
            try {
                putter.sendPairsIndefinitely(DELAY_BETWEEN_RECORDS_IN_MILLIS, TimeUnit.MILLISECONDS);
            } catch (Exception ex) {
                LOG.warn(
                        "Thread encountered an error while sending records. Records will no longer be put by this thread.",
                        ex);
            }
        }
    };

    for (int i = 0; i < numberOfThreads; i++) {
        es.submit(pairSender);
    }

    LOG.info(String.format("Sending pairs with a %dms delay between records with %d thread(s).",
            DELAY_BETWEEN_RECORDS_IN_MILLIS, numberOfThreads));

    es.shutdown();
    es.awaitTermination(Long.MAX_VALUE, TimeUnit.DAYS);
}

From source file:Test.java

public static void main(String args[]) throws Exception {
    ExecutorService pool = new ScheduledThreadPoolExecutor(3);
    AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(Paths.get("data.txt"),
            EnumSet.of(StandardOpenOption.READ), pool);
    CompletionHandler<Integer, ByteBuffer> handler = new CompletionHandler<Integer, ByteBuffer>() {
        @Override/*from  w  ww.j ava  2  s  .  c  om*/
        public synchronized void completed(Integer result, ByteBuffer attachment) {
            for (int i = 0; i < attachment.limit(); i++) {
                System.out.println((char) attachment.get(i));
            }
        }

        @Override
        public void failed(Throwable e, ByteBuffer attachment) {
        }
    };
    final int bufferCount = 5;
    ByteBuffer buffers[] = new ByteBuffer[bufferCount];
    for (int i = 0; i < bufferCount; i++) {
        buffers[i] = ByteBuffer.allocate(10);
        fileChannel.read(buffers[i], i * 10, buffers[i], handler);
    }
    pool.awaitTermination(1, TimeUnit.SECONDS);
    for (ByteBuffer byteBuffer : buffers) {
        for (int i = 0; i < byteBuffer.limit(); i++) {
            System.out.print((char) byteBuffer.get(i));
        }
    }
}

From source file:locking.LockingExample.java

public static void main(String[] args) throws Exception {
    // all of the useful sample code is in ExampleClientThatLocks.java

    // FakeLimitedResource simulates some external resource that can only be access by one process at a time
    final FakeLimitedResource resource = new FakeLimitedResource();

    ExecutorService service = Executors.newFixedThreadPool(QTY);
    final TestingServer server = new TestingServer();
    try {// w w w .ja  v a2  s .co m
        for (int i = 0; i < QTY; ++i) {
            final int index = i;
            Callable<Void> task = new Callable<Void>() {
                @Override
                public Void call() throws Exception {
                    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(),
                            new ExponentialBackoffRetry(1000, 3));
                    try {
                        client.start();

                        ExampleClientThatLocks example = new ExampleClientThatLocks(client, PATH, resource,
                                "Client " + index);
                        for (int j = 0; j < REPETITIONS; ++j) {
                            example.doWork(10, TimeUnit.SECONDS);
                        }
                    } catch (Throwable e) {
                        e.printStackTrace();
                    } finally {
                        IOUtils.closeQuietly(client);
                    }
                    return null;
                }
            };
            service.submit(task);
        }

        service.shutdown();
        service.awaitTermination(10, TimeUnit.MINUTES);
    } finally {
        IOUtils.closeQuietly(server);
    }
}

From source file:co.mitro.core.util.RPCLogReplayer.java

public static void main(String[] args) throws IOException, InterruptedException, KeyManagementException,
        UnrecoverableKeyException, NoSuchAlgorithmException, KeyStoreException {

    List<Request> requests = new ArrayList<>();
    ExecutorService executor = Executors.newFixedThreadPool(5);
    for (int i = 0; i < args.length; ++i) {
        String filename = args[i];
        System.err.println("Reading file: " + filename);
        JsonRecordReader rr = JsonRecordReader.MakeFromFilename(filename);
        JsonRecordReader.JsonLog log;/*from  w  w w.  j av  a  2 s  .c o  m*/
        try {
            while (null != (log = rr.readJson())) {
                if (Strings.isNullOrEmpty(log.payload.transactionId) && !log.payload.implicitBeginTransaction) {
                    // read only transaction
                    requests.add(new Request(log.metadata.endpoint, log.payload));
                }
            }
        } catch (EOFException e) {
            System.err.println("unexpected end of file; skipping");
        }
    }

    // run the simulation for a while.
    long scaling = 1000;
    double requestsPerMs = 353. / 9805199;
    long START_MS = 0;
    // run for 20 min
    long END_MS = 20 * 60 * 1000;
    long now = START_MS;
    int count = 0;
    while (now < END_MS) {
        double toSleep = nextExp(requestsPerMs * scaling);
        now += toSleep;
        ++count;
        Thread.sleep((long) toSleep);
        executor.execute(new SendQuery(requests.get(RNG.nextInt(requests.size()))));
        System.out.println("count: " + count + "\t time:" + now + "\t rate:" + (double) count / now);
    }
    executor.awaitTermination(1, TimeUnit.MINUTES);

}