io.nats.examples.benchmark.JsPublishInRoundsBench Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of jnats Show documentation
Client library for working with the NATS messaging system.
There is a newer version: 2.20.5
// Copyright 2015-2018 The NATS Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package io.nats.examples.benchmark;

import io.nats.client.*;
import io.nats.client.api.PublishAck;
import io.nats.client.api.StorageType;
import io.nats.client.api.StreamConfiguration;
import io.nats.client.impl.NatsMessage;
import io.nats.examples.ExampleUtils;

import java.time.Duration;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CompletableFuture;

import static io.nats.examples.ExampleUtils.uniqueEnough;

public class JsPublishInRoundsBench {
    static final String usageString =
            "\nUsage: java JsPublishInRoundsBench [serverURL] [help] " +
                    "[-m totalMessages] [-p payloadSize] [-r roundSize] [-o file|memory] [-c replicas] [-t stream] [-u subject]"
                    + "\n\nUse tls:// or opentls:// to require tls, via the Default SSLContext";

    public static void main(String[] args) {

        // TO RUN WITH ARGS FROM IDE, ADD A LINE LIKE THESE
        // args = "-r 100 -p 128".split(" ");
        // args = "-r 250 -p 100".split(" ");
        // args = "myhost:4222 -r 1000 -p 64".split(" ");
        // args = "-r 500 -p 64 -o file -c 2".split(" ");
        // args = "help".split(" ");

        Arguments a = readArgs(args);

        try (Connection nc = Nats.connect(ExampleUtils.createExampleOptions(a.server, true))) {
            JetStreamManagement jsm = nc.jetStreamManagement();
            StreamConfiguration.Builder builder = StreamConfiguration.builder()
                    .name(a.stream)
                    .storageType(a.file ? StorageType.File : StorageType.Memory)
                    .subjects(a.subject);

            if (a.replicas > 0) {
                builder.replicas(a.replicas);
            }

            StreamConfiguration sc = builder.build();

            try {
                jsm.addStream(sc);
                nc.flush(Duration.ofSeconds(5));
            }
            catch (Exception e) {
                System.out.println(e);
            }

            JetStream js = nc.jetStream();

            final Message m = NatsMessage.builder().subject(a.subject).data(new byte[a.payloadSize]).build();

            int sent = 0;
            int failed = 0;
            long totalElapsed = 0;
            while ((sent+failed) < a.totalMsgs) {
                long start = System.currentTimeMillis();
                List> futures = new ArrayList<>();
                for (int x = 0; x < a.roundSize; x++) {
                    futures.add(js.publishAsync(m));
                }
                while (futures.size() > 0) {
                    List> notDone = new ArrayList<>();
                    for (CompletableFuture f : futures) {
                        if (f.isDone()) {
                            if (f.isCompletedExceptionally()) {
                                failed++;
                            } else {
                                sent++;
                            }
                        }
                        else {
                            notDone.add(f);
                        }
                    }
                    futures = notDone;
                }

                long roundElapsed = System.currentTimeMillis() - start;
                totalElapsed += roundElapsed;
                if ((sent+failed) % 10_000 == 0) {
                    long pubPerSec = totalElapsed == 0 ? 0 : (sent + failed) * 1000L / totalElapsed;
                    System.out.println("Sent " + sent + " | Failed " + failed + " | " + (sent + failed) + " | Round Elapsed " + roundElapsed + " | Total Elapsed " + totalElapsed + " | Pub/Sec " + pubPerSec);
                }
            }
            long pubPerSec = (sent+failed) * 1000L / totalElapsed;
            System.out.println("\nFINAL Sent " + sent + " | Failed " + failed + " | " + (sent+failed) + " | Total Elapsed " + totalElapsed + " | Pub/Sec " + pubPerSec);
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }

    static class Arguments {
        String server = Options.DEFAULT_URL;
        int totalMsgs = 1_000_000;
        int payloadSize = 128;
        int roundSize = 100;
        int replicas = 0;
        boolean file = false;
        String stream = "jspirb-strm-" + uniqueEnough();
        String subject = "jspirb-sub-" + uniqueEnough();
    }

    private static String defaultArgs() {
        Arguments a = new Arguments();
        return "\n\nDefault Arguments: " +
                "server='" + a.server + '\'' +
                ", totalMsgs=" + a.totalMsgs +
                ", payloadSize=" + a.payloadSize +
                ", roundSize=" + a.roundSize +
                ", replicas=" + a.replicas +
                ", storage=" + StorageType.Memory +
                ", stream='" + "jspirb-strm-" + '\'' +
                ", subject='" + "jspirb-sub-" + '\'';
    }

    private static Arguments readArgs(String[] args) {
        Arguments a = new Arguments();
        if (args.length > 0) {
            for (int x = 0; x < args.length; x++) {
                switch (args[x]) {
                    case "-m":
                        a.totalMsgs = Integer.parseInt(args[++x]);
                        break;
                    case "-p":
                        a.payloadSize = Integer.parseInt(args[++x]);
                        break;
                    case "-r":
                        a.roundSize = Integer.parseInt(args[++x]);
                        break;
                    case "-c":
                        a.replicas = Integer.parseInt(args[++x]);
                        break;
                    case "-o":
                        a.file = args[++x].equalsIgnoreCase("file");
                        break;
                    case "-t":
                        a.stream = args[++x];
                        break;
                    case "-u":
                        a.subject = args[++x];
                        break;
                    case "help":
                        System.err.println(usageString + defaultArgs());
                        System.exit(-1);
                    default:
                        a.server = args[x];
                        break;
                }
            }
        }
        return a;
    }
}