Examples with TAG_SCHEDULER_ID reactor.core.scheduler.SchedulerMetricDecorator.TAG_SCHEDULER_ID used on opensource projects

Example 1 with TAG_SCHEDULER_ID

use of reactor.core.scheduler.SchedulerMetricDecorator.TAG_SCHEDULER_ID in project reactor-core by reactor.

the class SchedulersMetricsTest method shouldReportExecutionTimes.

@ParameterizedTestWithName
@MethodSource("metricsSchedulers")
@Timeout(10)
void shouldReportExecutionTimes(Supplier<Scheduler> schedulerType) {
    Scheduler scheduler = afterTest.autoDispose(schedulerType.get());
    final int taskCount = 3;
    Phaser phaser = new Phaser(1);
    for (int i = 1; i <= taskCount; i++) {
        phaser.register();
        // bumped delay from 20ms to make actual scheduling times more precise
        int delay = i * 200;
        scheduler.schedule(() -> {
            try {
                Thread.sleep(delay);
                phaser.arriveAndDeregister();
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        });
    }
    phaser.arriveAndAwaitAdvance();
    Collection<Timer> timers = registry.find("executor").tag(TAG_SCHEDULER_ID, scheduler.toString()).timers();
    // Use Awaitility because "count" is reported "eventually"
    await().atMost(5, TimeUnit.SECONDS).untilAsserted(() -> {
        assertThat(timers.stream().reduce(0d, (time, timer) -> time + timer.totalTime(TimeUnit.MILLISECONDS), Double::sum)).as("total durations").isEqualTo(600 + 400 + 200, offset(50d));
        assertThat(timers.stream().mapToLong(Timer::count).sum()).as("count").isEqualTo(taskCount);
    });
}