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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.deployment.DeploymentStatusList;
import com.yahoo.vespa.hosted.controller.deployment.JobList;
import com.yahoo.vespa.hosted.controller.rotation.RotationLock;
import com.yahoo.vespa.hosted.controller.versions.NodeVersion;
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.HashMap;
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 ControllerMaintainer {
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 OS_CHANGE_DURATION = "deployment.osChangeDuration";
public static final String PLATFORM_CHANGE_DURATION = "deployment.platformChangeDuration";
public static final String REMAINING_ROTATIONS = "remaining_rotations";
public static final String NAME_SERVICE_REQUESTS_QUEUED = "dns.queuedRequests";
private final Metric metric;
private final Clock clock;
public MetricsReporter(Controller controller, Metric metric) {
super(controller, Duration.ofMinutes(1)); // use fixed rate for metrics
this.metric = metric;
this.clock = controller.clock();
}
@Override
public void maintain() {
reportDeploymentMetrics();
reportRemainingRotations();
reportQueuedNameServiceRequests();
reportChangeDurations();
}
private void reportRemainingRotations() {
try (RotationLock lock = controller().routing().rotations().lock()) {
int availableRotations = controller().routing().rotations().availableRotations(lock).size();
metric.set(REMAINING_ROTATIONS, availableRotations, metric.createContext(Map.of()));
}
}
private void reportDeploymentMetrics() {
ApplicationList applications = ApplicationList.from(controller().applications().readable())
.withProductionDeployment();
DeploymentStatusList deployments = controller().jobController().deploymentStatuses(applications);
metric.set(DEPLOYMENT_FAIL_METRIC, deploymentFailRatio(deployments) * 100, metric.createContext(Map.of()));
averageDeploymentDurations(deployments, clock.instant()).forEach((instance, duration) -> {
metric.set(DEPLOYMENT_AVERAGE_DURATION, duration.getSeconds(), metric.createContext(dimensions(instance)));
});
deploymentsFailingUpgrade(deployments).forEach((instance, failingJobs) -> {
metric.set(DEPLOYMENT_FAILING_UPGRADES, failingJobs, metric.createContext(dimensions(instance)));
});
deploymentWarnings(deployments).forEach((application, warnings) -> {
metric.set(DEPLOYMENT_WARNINGS, warnings, metric.createContext(dimensions(application)));
});
for (Application application : applications.asList())
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 reportChangeDurations() {
Map<NodeVersion, Duration> platformChangeDurations = platformChangeDurations();
Map<NodeVersion, Duration> osChangeDurations = osChangeDurations();
platformChangeDurations.forEach((nodeVersion, duration) -> {
metric.set(PLATFORM_CHANGE_DURATION, duration.toSeconds(), metric.createContext(dimensions(nodeVersion)));
});
osChangeDurations.forEach((nodeVersion, duration) -> {
metric.set(OS_CHANGE_DURATION, duration.toSeconds(), metric.createContext(dimensions(nodeVersion)));
});
}
private Map<NodeVersion, Duration> platformChangeDurations() {
return changeDurations(controller().versionStatus().versions(), VespaVersion::nodeVersions);
}
private Map<NodeVersion, Duration> osChangeDurations() {
return changeDurations(controller().osVersionStatus().versions().values(), Function.identity());
}
private <V> Map<NodeVersion, Duration> changeDurations(Collection<V> versions, Function<V, NodeVersions> versionsGetter) {
var now = clock.instant();
var durations = new HashMap<NodeVersion, Duration>();
for (var version : versions) {
for (var nodeVersion : versionsGetter.apply(version).asMap().values()) {
durations.put(nodeVersion, nodeVersion.changeDuration(now));
}
}
return durations;
}
private static double deploymentFailRatio(DeploymentStatusList statuses) {
return statuses.asList().stream()
.mapToInt(status -> status.hasFailures() ? 1 : 0)
.average().orElse(0);
}
private static Map<ApplicationId, Duration> averageDeploymentDurations(DeploymentStatusList statuses, Instant now) {
return statuses.asList().stream()
.flatMap(status -> status.instanceJobs().entrySet().stream())
.collect(Collectors.toUnmodifiableMap(entry -> entry.getKey(),
entry -> averageDeploymentDuration(entry.getValue(), now)));
}
private static Map<ApplicationId, Integer> deploymentsFailingUpgrade(DeploymentStatusList statuses) {
return statuses.asList().stream()
.flatMap(status -> status.instanceJobs().entrySet().stream())
.collect(Collectors.toUnmodifiableMap(entry -> entry.getKey(),
entry -> deploymentsFailingUpgrade(entry.getValue())));
}
private static int deploymentsFailingUpgrade(JobList jobs) {
return jobs.failing().not().failingApplicationChange().size();
}
private static Duration averageDeploymentDuration(JobList jobs, Instant now) {
List<Duration> jobDurations = jobs.lastTriggered()
.mapToList(run -> Duration.between(run.start(), run.end().orElse(now)));
return jobDurations.stream()
.reduce(Duration::plus)
.map(totalDuration -> totalDuration.dividedBy(jobDurations.size()))
.orElse(Duration.ZERO);
}
private static Map<ApplicationId, Integer> deploymentWarnings(DeploymentStatusList statuses) {
return statuses.asList().stream()
.flatMap(status -> status.application().instances().values().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());
}
private static Map<String, String> dimensions(NodeVersion nodeVersion) {
return Map.of("host", nodeVersion.hostname().value(),
"zone", nodeVersion.zone().value(),
"currentVersion", nodeVersion.currentVersion().toFullString());
}
}
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