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// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.service.monitor.application;
import com.google.inject.Inject;
import com.yahoo.cloud.config.ConfigserverConfig;
import com.yahoo.config.model.api.ApplicationInfo;
import com.yahoo.config.model.api.SuperModel;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.HostName;
import com.yahoo.vespa.flags.FeatureFlag;
import com.yahoo.vespa.flags.FlagSource;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;
/**
* The {@code DuperModel} unites the {@link com.yahoo.config.model.api.SuperModel SuperModel}
* with synthetic applications like the config server application.
*
* @author hakon
*/
public class DuperModel implements DuperModelInfraApi {
// Infrastructure applications
private static final ConfigServerApplication configServerApplication = new ConfigServerApplication();
private static final ConfigServerHostApplication configServerHostApplication = new ConfigServerHostApplication();
private static final ProxyHostApplication proxyHostApplication = new ProxyHostApplication();
private static final ControllerApplication controllerApplication = new ControllerApplication();
private static final ControllerHostApplication controllerHostApplication = new ControllerHostApplication();
private static final Map<ApplicationId, InfraApplication> supportedInfraApplications = Stream.of(
configServerApplication,
configServerHostApplication,
proxyHostApplication,
controllerApplication,
controllerHostApplication)
.collect(Collectors.toMap(InfraApplication::getApplicationId, Function.identity()));
private final FeatureFlag containsInfra;
private final FeatureFlag useConfigserverConfig;
private final boolean multitenant;
// Each of the above infrastructure applications may be active, in case their ApplicationInfo is present here
private final ConcurrentHashMap<ApplicationId, ApplicationInfo> infraInfos =
new ConcurrentHashMap<>(2 * supportedInfraApplications.size());
private final ApplicationInfo configServerApplicationFromConfig;
@Inject
public DuperModel(ConfigserverConfig configServerConfig, FlagSource flagSource) {
this(
// Whether to include activate infrastructure applications (except from controller/config apps - see below).
new FeatureFlag("dupermodel-contains-infra", true, flagSource),
// For historical reasons, the ApplicationInfo in the DuperModel for controllers and config servers
// is based on the ConfigserverConfig (this flag is true). We want to transition to use the
// infrastructure application activated by the InfrastructureProvisioner once that supports health.
new FeatureFlag("dupermodel-use-configserverconfig", true, flagSource),
configServerConfig.multitenant(),
configServerApplication.makeApplicationInfoFromConfig(configServerConfig));
}
/** For testing */
public DuperModel(FeatureFlag containsInfra,
FeatureFlag useConfigserverConfig,
boolean multitenant,
ApplicationInfo configServerApplicationInfo) {
this.containsInfra = containsInfra;
this.useConfigserverConfig = useConfigserverConfig;
this.multitenant = multitenant;
this.configServerApplicationFromConfig = configServerApplicationInfo;
}
public ConfigServerApplication getConfigServerApplication() {
return configServerApplication;
}
public ConfigServerHostApplication getConfigServerHostApplication() {
return configServerHostApplication;
}
public ProxyHostApplication getProxyHostApplication() {
return proxyHostApplication;
}
public ControllerApplication getControllerApplication() {
return controllerApplication;
}
public ControllerHostApplication getControllerHostApplication() {
return controllerHostApplication;
}
@Override
public List<InfraApplicationApi> getSupportedInfraApplications() {
return new ArrayList<>(supportedInfraApplications.values());
}
@Override
public boolean infraApplicationIsActive(ApplicationId applicationId) {
return infraInfos.containsKey(applicationId);
}
@Override
public void infraApplicationActivated(ApplicationId applicationId, List<HostName> hostnames) {
InfraApplication application = supportedInfraApplications.get(applicationId);
if (application == null) {
throw new IllegalArgumentException("There is no infrastructure application with ID '" + applicationId + "'");
}
infraInfos.put(application.getApplicationId(), application.makeApplicationInfo(hostnames));
}
@Override
public void infraApplicationRemoved(ApplicationId applicationId) {
infraInfos.remove(applicationId);
}
public List<ApplicationInfo> getApplicationInfos(SuperModel superModelSnapshot) {
List<ApplicationInfo> infos = new ArrayList<>();
// Single-tenant applications have the config server as part of the application model.
if (multitenant) {
if (useConfigserverConfig.value()) {
infos.add(configServerApplicationFromConfig);
} else {
ApplicationInfo info = infraInfos.get(controllerApplication.getApplicationId());
if (info == null) {
info = infraInfos.get(configServerApplication.getApplicationId());
}
if (info != null) {
infos.add(info);
}
}
}
if (containsInfra.value()) {
// All infra apps, excluding controller and config server which handled above.
infraInfos.values().stream()
.filter(info -> !info.getApplicationId().equals(controllerApplication.getApplicationId()) &&
!info.getApplicationId().equals(configServerApplication.getApplicationId()))
.forEach(infos::add);
}
infos.addAll(superModelSnapshot.getAllApplicationInfos());
return infos;
}
}
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