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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.controller.maintenance;
import ai.vespa.metrics.ControllerMetrics;
import com.yahoo.concurrent.DaemonThreadFactory;
import com.yahoo.jdisc.Metric;
import com.yahoo.vespa.hosted.controller.Controller;
import com.yahoo.vespa.hosted.controller.api.integration.deployment.RunId;
import com.yahoo.vespa.hosted.controller.deployment.InternalStepRunner;
import com.yahoo.vespa.hosted.controller.deployment.JobController;
import com.yahoo.vespa.hosted.controller.deployment.Run;
import com.yahoo.vespa.hosted.controller.deployment.Step;
import com.yahoo.vespa.hosted.controller.deployment.StepRunner;
import java.time.Duration;
import java.util.Map;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Advances the set of {@link Run}s for a {@link JobController}.
*
* @author jonmv
*/
public class JobRunner extends ControllerMaintainer {
public static final Duration jobTimeout = Duration.ofDays(1).plusHours(1);
private static final Logger log = Logger.getLogger(JobRunner.class.getName());
private final JobController jobs;
private final ExecutorService executors;
private final StepRunner runner;
private final Metrics metrics;
public JobRunner(Controller controller, Duration duration) {
this(controller, duration, Executors.newFixedThreadPool(32, new DaemonThreadFactory("job-runner-")),
new InternalStepRunner(controller));
}
public JobRunner(Controller controller, Duration duration, ExecutorService executors, StepRunner runner) {
this(controller, duration, executors, runner, new Metrics(controller.metric(), Duration.ofMillis(100)));
}
JobRunner(Controller controller, Duration duration, ExecutorService executors, StepRunner runner, Metrics metrics) {
super(controller, duration);
this.jobs = controller.jobController();
this.jobs.setRunner(this::advance);
this.executors = executors;
this.runner = runner;
this.metrics = metrics;
}
@Override
protected double maintain() {
execute(() -> jobs.active().forEach(this::advance));
jobs.collectGarbage();
return 1.0;
}
@Override
public void shutdown() {
super.shutdown();
metrics.shutdown();
executors.shutdown();
}
@Override
public void awaitShutdown() {
super.awaitShutdown();
try {
if ( ! executors.awaitTermination(40, TimeUnit.SECONDS)) {
executors.shutdownNow();
if ( ! executors.awaitTermination(10, TimeUnit.SECONDS))
throw new IllegalStateException("Failed shutting down " + JobRunner.class.getName());
}
}
catch (InterruptedException e) {
log.log(Level.WARNING, "Interrupted during shutdown of " + JobRunner.class.getName(), e);
Thread.currentThread().interrupt();
}
}
public void advance(Run run) {
if ( ! jobs.isDisabled(run.id().job())) advance(run.id());
}
/** Advances each of the ready steps for the given run, or marks it as finished, and stashes it. Public for testing. */
public void advance(RunId id) {
jobs.locked(id, run -> {
if ( ! run.hasFailed()
&& controller().clock().instant().isAfter(run.sleepUntil().orElse(run.start()).plus(jobTimeout)))
execute(() -> {
jobs.abort(run.id(), "job timeout of " + jobTimeout + " reached", false);
advance(run.id());
});
else if (run.readySteps().isEmpty())
execute(() -> finish(run.id()));
else if (run.hasFailed() || run.sleepUntil().map(sleepUntil -> ! sleepUntil.isAfter(controller().clock().instant())).orElse(true))
run.readySteps().forEach(step -> execute(() -> advance(run.id(), step)));
return null;
});
}
private void finish(RunId id) {
try {
jobs.finish(id);
if ( ! id.type().environment().isManuallyDeployed())
controller().applications().deploymentTrigger().notifyOfCompletion(id.application());
}
catch (TimeoutException e) {
// One of the steps are still being run — that's ok, we'll try to finish the run again later.
}
catch (Exception e) {
log.log(Level.WARNING, "Exception finishing " + id, e);
}
}
/** Attempts to advance the status of the given step, for the given run. */
private void advance(RunId id, Step step) {
try {
AtomicBoolean changed = new AtomicBoolean(false);
jobs.locked(id.application(), id.type(), step, lockedStep -> {
jobs.locked(id, run -> {
if ( ! run.readySteps().contains(step)) {
changed.set(true);
return run; // Someone may have updated the run status, making this step obsolete, so we bail out.
}
if (run.stepInfo(lockedStep.get()).orElseThrow().startTime().isEmpty())
run = run.with(controller().clock().instant(), lockedStep);
return run;
});
if ( ! changed.get()) {
runner.run(lockedStep, id).ifPresent(status -> {
jobs.update(id, status, lockedStep);
changed.set(true);
});
}
});
if (changed.get())
jobs.active(id).ifPresent(this::advance);
}
catch (TimeoutException e) {
// Something else is already advancing this step, or a prerequisite -- try again later!
}
catch (RuntimeException e) {
log.log(Level.WARNING, "Exception attempting to advance " + step + " of " + id, e);
}
}
private void execute(Runnable task) {
metrics.queued.incrementAndGet();
executors.execute(() -> {
metrics.queued.decrementAndGet();
metrics.active.incrementAndGet();
try { task.run(); }
finally { metrics.active.decrementAndGet(); }
});
}
static class Metrics {
private final AtomicInteger queued = new AtomicInteger();
private final AtomicInteger active = new AtomicInteger();
private final ScheduledExecutorService reporter = Executors.newSingleThreadScheduledExecutor(new DaemonThreadFactory("job-runner-metrics-"));
private final Metric metric;
private final Metric.Context context;
Metrics(Metric metric, Duration interval) {
this.metric = metric;
this.context = metric.createContext(Map.of());
reporter.scheduleAtFixedRate(this::report, interval.toMillis(), interval.toMillis(), TimeUnit.MILLISECONDS);
}
void report() {
metric.set(ControllerMetrics.DEPLOYMENT_JOBS_QUEUED.baseName(), queued.get(), context);
metric.set(ControllerMetrics.DEPLOYMENT_JOBS_ACTIVE.baseName(), active.get(), context);
}
void shutdown() {
reporter.shutdown();
}
}
}
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