Examples with EventStreamWriter io.pravega.client.stream.EventStreamWriter used on opensource projects

Example 6 with EventStreamWriter

use of io.pravega.client.stream.EventStreamWriter in project pravega by pravega.

the class EndToEndAutoScaleUpTest method main.

public static void main(String[] args) throws Exception {
    try {
        @Cleanup TestingServer zkTestServer = new TestingServerStarter().start();
        int port = Config.SERVICE_PORT;
        @Cleanup ControllerWrapper controllerWrapper = new ControllerWrapper(zkTestServer.getConnectString(), port, false);
        Controller controller = controllerWrapper.getController();
        ClientFactory internalCF = new ClientFactoryImpl(NameUtils.INTERNAL_SCOPE_NAME, controller, new ConnectionFactoryImpl(ClientConfig.builder().build()));
        ServiceBuilder serviceBuilder = ServiceBuilder.newInMemoryBuilder(ServiceBuilderConfig.getDefaultConfig());
        serviceBuilder.initialize();
        StreamSegmentStore store = serviceBuilder.createStreamSegmentService();
        @Cleanup SegmentStatsFactory segmentStatsFactory = new SegmentStatsFactory();
        SegmentStatsRecorder statsRecorder = segmentStatsFactory.createSegmentStatsRecorder(store, internalCF, AutoScalerConfig.builder().with(AutoScalerConfig.MUTE_IN_SECONDS, 0).with(AutoScalerConfig.COOLDOWN_IN_SECONDS, 0).build());
        @Cleanup PravegaConnectionListener server = new PravegaConnectionListener(false, "localhost", 12345, store, statsRecorder, null, null, null);
        server.startListening();
        controllerWrapper.awaitRunning();
        controllerWrapper.getControllerService().createScope("test").get();
        controller.createStream(CONFIG).get();
        @Cleanup MockClientFactory clientFactory = new MockClientFactory("test", controller);
        // Mocking pravega service by putting scale up and scale down requests for the stream
        EventStreamWriter<String> test = clientFactory.createEventWriter("test", new JavaSerializer<>(), EventWriterConfig.builder().build());
        // keep writing. Scale should happen
        long start = System.currentTimeMillis();
        char[] chars = new char[1];
        Arrays.fill(chars, 'a');
        String str = new String(chars);
        CompletableFuture.runAsync(() -> {
            while (System.currentTimeMillis() - start < Duration.ofMinutes(3).toMillis()) {
                try {
                    test.writeEvent("0", str).get();
                } catch (Throwable e) {
                    System.err.println("test exception writing events " + e.getMessage());
                    break;
                }
            }
        });
        Retry.withExpBackoff(10, 10, 100, 10000).retryingOn(NotDoneException.class).throwingOn(RuntimeException.class).runAsync(() -> controller.getCurrentSegments("test", "test").thenAccept(streamSegments -> {
            if (streamSegments.getSegments().size() > 3) {
                System.err.println("Success");
                log.info("Success");
                System.exit(0);
            } else {
                throw new NotDoneException();
            }
        }), Executors.newSingleThreadScheduledExecutor()).exceptionally(e -> {
            System.err.println("Failure");
            log.error("Failure");
            System.exit(1);
            return null;
        }).get();
    } catch (Throwable e) {
        System.err.print("Test failed with exception: " + e.getMessage());
        System.exit(-1);
    }
    System.exit(0);
}