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// Copyright 2019 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.controller.maintenance;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.jdisc.Metric;
import com.yahoo.vespa.hosted.controller.Application;
import com.yahoo.vespa.hosted.controller.Controller;
import com.yahoo.vespa.hosted.controller.Instance;
import com.yahoo.vespa.hosted.controller.api.integration.deployment.ApplicationVersion;
import com.yahoo.vespa.hosted.controller.application.ApplicationList;
import com.yahoo.vespa.hosted.controller.application.Deployment;
import com.yahoo.vespa.hosted.controller.application.DeploymentMetrics;
import com.yahoo.vespa.hosted.controller.application.JobList;
import com.yahoo.vespa.hosted.controller.application.JobStatus;
import com.yahoo.vespa.hosted.controller.rotation.RotationLock;
import com.yahoo.vespa.hosted.controller.versions.NodeVersions;
import com.yahoo.vespa.hosted.controller.versions.VespaVersion;
import java.time.Clock;
import java.time.Duration;
import java.time.Instant;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;
/**
* This calculates and reports system-wide metrics based on data from a {@link Controller}.
*
* @author mortent
* @author mpolden
*/
public class MetricsReporter extends Maintainer {
public static final String DEPLOYMENT_FAIL_METRIC = "deployment.failurePercentage";
public static final String DEPLOYMENT_AVERAGE_DURATION = "deployment.averageDuration";
public static final String DEPLOYMENT_FAILING_UPGRADES = "deployment.failingUpgrades";
public static final String DEPLOYMENT_BUILD_AGE_SECONDS = "deployment.buildAgeSeconds";
public static final String DEPLOYMENT_WARNINGS = "deployment.warnings";
public static final String NODES_FAILING_SYSTEM_UPGRADE = "deployment.nodesFailingSystemUpgrade";
public static final String NODES_FAILING_OS_UPGRADE = "deployment.nodesFailingOsUpgrade";
public static final String REMAINING_ROTATIONS = "remaining_rotations";
public static final String NAME_SERVICE_REQUESTS_QUEUED = "dns.queuedRequests";
private static final Duration NODE_UPGRADE_TIMEOUT = Duration.ofHours(1);
private static final Duration OS_UPGRADE_TIME_ALLOWANCE_PER_NODE = Duration.ofMinutes(30);
private final Metric metric;
private final Clock clock;
public MetricsReporter(Controller controller, Metric metric, JobControl jobControl) {
super(controller, Duration.ofMinutes(1), jobControl); // use fixed rate for metrics
this.metric = metric;
this.clock = controller.clock();
}
@Override
public void maintain() {
reportDeploymentMetrics();
reportRemainingRotations();
reportQueuedNameServiceRequests();
reportNodesFailingUpgrade();
}
private void reportRemainingRotations() {
try (RotationLock lock = controller().applications().rotationRepository().lock()) {
int availableRotations = controller().applications().rotationRepository().availableRotations(lock).size();
metric.set(REMAINING_ROTATIONS, availableRotations, metric.createContext(Map.of()));
}
}
private void reportDeploymentMetrics() {
List<Application> applications = ApplicationList.from(controller().applications().asList())
.withProductionDeployment().asList().stream()
.collect(Collectors.toUnmodifiableList());
List<Instance> instances = applications.stream()
.flatMap(application -> application.instances().values().stream())
.collect(Collectors.toUnmodifiableList());
metric.set(DEPLOYMENT_FAIL_METRIC, deploymentFailRatio(instances) * 100, metric.createContext(Map.of()));
averageDeploymentDurations(instances, clock.instant()).forEach((application, duration) -> {
metric.set(DEPLOYMENT_AVERAGE_DURATION, duration.getSeconds(), metric.createContext(dimensions(application)));
});
deploymentsFailingUpgrade(instances).forEach((application, failingJobs) -> {
metric.set(DEPLOYMENT_FAILING_UPGRADES, failingJobs, metric.createContext(dimensions(application)));
});
deploymentWarnings(instances).forEach((application, warnings) -> {
metric.set(DEPLOYMENT_WARNINGS, warnings, metric.createContext(dimensions(application)));
});
for (Application application : applications)
application.latestVersion()
.flatMap(ApplicationVersion::buildTime)
.ifPresent(buildTime -> metric.set(DEPLOYMENT_BUILD_AGE_SECONDS,
controller().clock().instant().getEpochSecond() - buildTime.getEpochSecond(),
metric.createContext(dimensions(application.id().defaultInstance()))));
}
private void reportQueuedNameServiceRequests() {
metric.set(NAME_SERVICE_REQUESTS_QUEUED, controller().curator().readNameServiceQueue().requests().size(),
metric.createContext(Map.of()));
}
private void reportNodesFailingUpgrade() {
metric.set(NODES_FAILING_SYSTEM_UPGRADE, nodesFailingSystemUpgrade(), metric.createContext(Map.of()));
metric.set(NODES_FAILING_OS_UPGRADE, nodesFailingOsUpgrade(), metric.createContext(Map.of()));
}
private int nodesFailingSystemUpgrade() {
if (!controller().versionStatus().isUpgrading()) return 0;
return nodesFailingUpgrade(controller().versionStatus().versions(), (vespaVersion) -> {
if (vespaVersion.confidence() == VespaVersion.Confidence.broken) return NodeVersions.EMPTY;
return vespaVersion.nodeVersions();
}, NODE_UPGRADE_TIMEOUT);
}
private int nodesFailingOsUpgrade() {
var allNodeVersions = controller().osVersionStatus().versions().values();
var totalTimeout = 0L;
for (var nodeVersions : allNodeVersions) {
for (var nodeVersion : nodeVersions.asMap().values()) {
if (!nodeVersion.changing()) continue;
totalTimeout += OS_UPGRADE_TIME_ALLOWANCE_PER_NODE.toMillis();
}
}
return nodesFailingUpgrade(allNodeVersions, Function.identity(), Duration.ofMillis(totalTimeout));
}
private <V> int nodesFailingUpgrade(Collection<V> collection, Function<V, NodeVersions> nodeVersionsFunction, Duration timeout) {
var nodesFailingUpgrade = 0;
var acceptableInstant = clock.instant().minus(timeout);
for (var object : collection) {
for (var nodeVersion : nodeVersionsFunction.apply(object).asMap().values()) {
if (!nodeVersion.changing()) continue;
if (nodeVersion.changedAt().isBefore(acceptableInstant)) nodesFailingUpgrade++;
}
}
return nodesFailingUpgrade;
}
private static double deploymentFailRatio(List<Instance> instances) {
return instances.stream()
.mapToInt(instance -> instance.deploymentJobs().hasFailures() ? 1 : 0)
.average().orElse(0);
}
private static Map<ApplicationId, Duration> averageDeploymentDurations(List<Instance> instances, Instant now) {
return instances.stream()
.collect(Collectors.toMap(Instance::id,
instance -> averageDeploymentDuration(instance, now)));
}
private static Map<ApplicationId, Integer> deploymentsFailingUpgrade(List<Instance> instances) {
return instances.stream()
.collect(Collectors.toMap(Instance::id, MetricsReporter::deploymentsFailingUpgrade));
}
private static int deploymentsFailingUpgrade(Instance instance) {
return JobList.from(instance).upgrading().failing().size();
}
private static Duration averageDeploymentDuration(Instance instance, Instant now) {
List<Duration> jobDurations = instance.deploymentJobs().jobStatus().values().stream()
.filter(status -> status.lastTriggered().isPresent())
.map(status -> {
Instant triggeredAt = status.lastTriggered().get().at();
Instant runningUntil = status.lastCompleted()
.map(JobStatus.JobRun::at)
.filter(at -> at.isAfter(triggeredAt))
.orElse(now);
return Duration.between(triggeredAt, runningUntil);
})
.collect(Collectors.toList());
return jobDurations.stream()
.reduce(Duration::plus)
.map(totalDuration -> totalDuration.dividedBy(jobDurations.size()))
.orElse(Duration.ZERO);
}
private static Map<ApplicationId, Integer> deploymentWarnings(List<Instance> instances) {
return instances.stream()
.collect(Collectors.toMap(Instance::id, a -> maxWarningCountOf(a.deployments().values())));
}
private static int maxWarningCountOf(Collection<Deployment> deployments) {
return deployments.stream()
.map(Deployment::metrics)
.map(DeploymentMetrics::warnings)
.map(Map::values)
.flatMap(Collection::stream)
.max(Integer::compareTo)
.orElse(0);
}
private static Map<String, String> dimensions(ApplicationId application) {
return Map.of("tenant", application.tenant().value(),
"app",application.application().value() + "." + application.instance().value());
}
}
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