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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.service.monitor.internal;
import com.yahoo.config.model.api.ApplicationInfo;
import com.yahoo.config.model.api.HostInfo;
import com.yahoo.config.model.api.ServiceInfo;
import com.yahoo.config.model.api.SuperModel;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.Zone;
import com.yahoo.vespa.applicationmodel.ApplicationInstance;
import com.yahoo.vespa.applicationmodel.ApplicationInstanceId;
import com.yahoo.vespa.applicationmodel.ApplicationInstanceReference;
import com.yahoo.vespa.applicationmodel.ClusterId;
import com.yahoo.vespa.applicationmodel.ConfigId;
import com.yahoo.vespa.applicationmodel.HostName;
import com.yahoo.vespa.applicationmodel.ServiceCluster;
import com.yahoo.vespa.applicationmodel.ServiceClusterKey;
import com.yahoo.vespa.applicationmodel.ServiceInstance;
import com.yahoo.vespa.applicationmodel.ServiceStatus;
import com.yahoo.vespa.applicationmodel.ServiceType;
import com.yahoo.vespa.applicationmodel.TenantId;
import com.yahoo.vespa.service.monitor.ServiceModel;
import com.yahoo.vespa.service.monitor.ServiceStatusProvider;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
/**
* Util to convert SuperModel to ServiceModel and application model classes
*/
public class ModelGenerator {
public static final String CLUSTER_ID_PROPERTY_NAME = "clustername";
/**
* Create service model based primarily on super model.
*
* If the configServerhosts is non-empty, a config server application is added.
*/
ServiceModel toServiceModel(
SuperModel superModel,
Zone zone,
List<String> configServerHosts,
ServiceStatusProvider serviceStatusProvider) {
Map<ApplicationInstanceReference, ApplicationInstance> applicationInstances = new HashMap<>();
for (ApplicationInfo applicationInfo : superModel.getAllApplicationInfos()) {
ApplicationInstance applicationInstance = toApplicationInstance(
applicationInfo,
zone,
serviceStatusProvider);
applicationInstances.put(applicationInstance.reference(), applicationInstance);
}
// The config server is part of the service model (but not super model)
if (!configServerHosts.isEmpty()) {
ConfigServerApplication configServerApplication = new ConfigServerApplication();
ApplicationInstance configServerApplicationInstance =
configServerApplication.toApplicationInstance(configServerHosts);
applicationInstances.put(configServerApplicationInstance.reference(), configServerApplicationInstance);
}
return new ServiceModel(applicationInstances);
}
ApplicationInstance toApplicationInstance(
ApplicationInfo applicationInfo,
Zone zone,
ServiceStatusProvider serviceStatusProvider) {
Map<ServiceClusterKey, Set<ServiceInstance>> groupedServiceInstances = new HashMap<>();
for (HostInfo host : applicationInfo.getModel().getHosts()) {
HostName hostName = new HostName(host.getHostname());
for (ServiceInfo serviceInfo : host.getServices()) {
ServiceClusterKey serviceClusterKey = toServiceClusterKey(serviceInfo);
ServiceInstance serviceInstance =
toServiceInstance(
applicationInfo.getApplicationId(),
serviceClusterKey.clusterId(),
serviceInfo,
hostName,
serviceStatusProvider);
if (!groupedServiceInstances.containsKey(serviceClusterKey)) {
groupedServiceInstances.put(serviceClusterKey, new HashSet<>());
}
groupedServiceInstances.get(serviceClusterKey).add(serviceInstance);
}
}
Set<ServiceCluster> serviceClusters = groupedServiceInstances.entrySet().stream()
.map(entry -> new ServiceCluster(
entry.getKey().clusterId(),
entry.getKey().serviceType(),
entry.getValue()))
.collect(Collectors.toSet());
ApplicationInstance applicationInstance = new ApplicationInstance(
new TenantId(applicationInfo.getApplicationId().tenant().toString()),
toApplicationInstanceId(applicationInfo, zone),
serviceClusters);
// Fill back-references
for (ServiceCluster serviceCluster : applicationInstance.serviceClusters()) {
serviceCluster.setApplicationInstance(applicationInstance);
for (ServiceInstance serviceInstance : serviceCluster.serviceInstances()) {
serviceInstance.setServiceCluster(serviceCluster);
}
}
return applicationInstance;
}
static ClusterId getClusterId(ServiceInfo serviceInfo) {
return new ClusterId(serviceInfo.getProperty(CLUSTER_ID_PROPERTY_NAME).orElse(""));
}
private ServiceClusterKey toServiceClusterKey(ServiceInfo serviceInfo) {
ClusterId clusterId = getClusterId(serviceInfo);
ServiceType serviceType = toServiceType(serviceInfo);
return new ServiceClusterKey(clusterId, serviceType);
}
private ServiceInstance toServiceInstance(
ApplicationId applicationId,
ClusterId clusterId,
ServiceInfo serviceInfo,
HostName hostName,
ServiceStatusProvider serviceStatusProvider) {
ConfigId configId = new ConfigId(serviceInfo.getConfigId());
ServiceStatus status = serviceStatusProvider.getStatus(
applicationId,
clusterId,
toServiceType(serviceInfo), configId);
return new ServiceInstance(configId, hostName, status);
}
private ApplicationInstanceId toApplicationInstanceId(ApplicationInfo applicationInfo, Zone zone) {
return new ApplicationInstanceId(String.format("%s:%s:%s:%s",
applicationInfo.getApplicationId().application().value(),
zone.environment().value(),
zone.region().value(),
applicationInfo.getApplicationId().instance().value()));
}
private ServiceType toServiceType(ServiceInfo serviceInfo) {
return new ServiceType(serviceInfo.getServiceType());
}
}
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