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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.service.model;
import ai.vespa.http.DomainName;
import com.yahoo.component.annotation.Inject;
import com.yahoo.config.model.api.ApplicationInfo;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.Zone;
import com.yahoo.jdisc.Metric;
import com.yahoo.jdisc.Timer;
import com.yahoo.vespa.applicationmodel.ApplicationInstance;
import com.yahoo.vespa.applicationmodel.ApplicationInstanceReference;
import com.yahoo.vespa.applicationmodel.HostName;
import com.yahoo.vespa.service.duper.DuperModelManager;
import com.yahoo.vespa.service.manager.MonitorManager;
import com.yahoo.vespa.service.manager.UnionMonitorManager;
import com.yahoo.vespa.service.monitor.AntiServiceMonitor;
import com.yahoo.vespa.service.monitor.CriticalRegion;
import com.yahoo.vespa.service.monitor.ServiceHostListener;
import com.yahoo.vespa.service.monitor.ServiceModel;
import com.yahoo.vespa.service.monitor.ServiceMonitor;
import com.yahoo.vespa.service.monitor.ServiceStatusProvider;
import java.util.Optional;
import java.util.Set;
public class ServiceMonitorImpl implements ServiceMonitor, AntiServiceMonitor {
private final ServiceMonitorMetrics metrics;
private final DuperModelManager duperModelManager;
private final ModelGenerator modelGenerator;
private final ServiceStatusProvider serviceStatusProvider;
@Inject
public ServiceMonitorImpl(DuperModelManager duperModelManager,
UnionMonitorManager monitorManager,
Metric metric,
Timer timer,
Zone zone) {
this(monitorManager,
new ServiceMonitorMetrics(metric, timer),
duperModelManager,
new ModelGenerator(zone)
);
}
ServiceMonitorImpl(MonitorManager monitorManager,
ServiceMonitorMetrics metrics,
DuperModelManager duperModelManager,
ModelGenerator modelGenerator) {
this.serviceStatusProvider = monitorManager;
this.metrics = metrics;
this.duperModelManager = duperModelManager;
this.modelGenerator = modelGenerator;
duperModelManager.registerListener(monitorManager);
}
@Override
public ServiceModel getServiceModelSnapshot() {
try (LatencyMeasurement measurement = metrics.startServiceModelSnapshotLatencyMeasurement()) {
return modelGenerator.toServiceModel(duperModelManager.getApplicationInfos(), serviceStatusProvider);
}
}
@Override
public Set<ApplicationInstanceReference> getAllApplicationInstanceReferences() {
return modelGenerator.toApplicationInstanceReferenceSet(duperModelManager.getApplicationInfos());
}
@Override
public Optional<ApplicationInstanceReference> getApplicationInstanceReference(HostName hostname) {
return duperModelManager.getApplicationInfo(DomainName.of(hostname.s()))
.map(ApplicationInfo::getApplicationId)
.map(modelGenerator::toApplicationInstanceReference);
}
@Override
public Optional<ApplicationInstance> getApplication(HostName hostname) {
return getApplicationInfo(hostname)
.map(applicationInfo -> modelGenerator.toApplicationInstance(applicationInfo, serviceStatusProvider));
}
@Override
public Optional<ApplicationInstance> getApplication(ApplicationInstanceReference reference) {
return getApplicationInfo(reference)
.map(applicationInfo -> modelGenerator.toApplicationInstance(applicationInfo, serviceStatusProvider));
}
@Override
public Optional<ApplicationInstance> getApplicationNarrowedTo(HostName hostname) {
Optional<ApplicationInfo> applicationInfo = getApplicationInfo(hostname);
if (applicationInfo.isEmpty()) {
return Optional.empty();
}
return Optional.of(modelGenerator.toApplicationNarrowedToHost(
applicationInfo.get(), hostname, serviceStatusProvider));
}
@Override
public void registerListener(ServiceHostListener listener) {
var duperModelListener = ServiceHostListenerAdapter.asDuperModelListener(listener, modelGenerator);
duperModelManager.registerListener(duperModelListener);
}
@Override
public CriticalRegion disallowDuperModelLockAcquisition(String regionDescription) {
return duperModelManager.disallowDuperModelLockAcquisition(regionDescription);
}
private Optional<ApplicationInfo> getApplicationInfo(ApplicationInstanceReference reference) {
ApplicationId applicationId = ApplicationInstanceGenerator.toApplicationId(reference);
return duperModelManager.getApplicationInfo(applicationId);
}
private Optional<ApplicationInfo> getApplicationInfo(HostName hostname) {
return duperModelManager.getApplicationInfo(DomainName.of(hostname.s()));
}
}
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