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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.config.server;
import com.google.inject.Inject;
import com.yahoo.cloud.config.ConfigserverConfig;
import com.yahoo.config.ConfigInstance;
import com.yahoo.config.model.api.ConfigDefinitionRepo;
import com.yahoo.component.Version;
import com.yahoo.log.LogLevel;
import com.yahoo.vespa.config.ConfigKey;
import com.yahoo.vespa.config.GetConfigRequest;
import com.yahoo.vespa.config.protocol.ConfigResponse;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.vespa.config.server.application.ApplicationSet;
import com.yahoo.vespa.config.server.rpc.ConfigResponseFactory;
import java.io.IOException;
import java.util.Optional;
import java.util.Set;
/**
* Handles request for supermodel config.
*
* @author Ulf Lilleengen
*/
public class SuperModelRequestHandler implements RequestHandler {
private static final java.util.logging.Logger log = java.util.logging.Logger.getLogger(SuperModelRequestHandler.class.getName());
private volatile SuperModelController handler;
private final ConfigDefinitionRepo configDefinitionRepo;
private final ConfigResponseFactory responseFactory;
private final SuperModelManager superModelManager;
private volatile boolean enabled = false;
/**
* Creates a supermodel controller
*/
@Inject
public SuperModelRequestHandler(ConfigDefinitionRepo configDefinitionRepo,
ConfigserverConfig configserverConfig,
SuperModelManager superModelManager) {
this.configDefinitionRepo = configDefinitionRepo;
this.responseFactory = ConfigResponseFactory.create(configserverConfig);
this.superModelManager = superModelManager;
updateHandler();
}
/**
* Signals that config has been reloaded for an {@link com.yahoo.vespa.config.server.application.Application}
* belonging to a tenant.
*
* @param applicationSet The reloaded set of {@link com.yahoo.vespa.config.server.application.Application}.
*/
public synchronized void reloadConfig(ApplicationSet applicationSet) {
superModelManager.configActivated(applicationSet);
updateHandler();
}
public synchronized void removeApplication(ApplicationId applicationId) {
superModelManager.applicationRemoved(applicationId);
updateHandler();
}
private void updateHandler() {
handler = new SuperModelController(
superModelManager.getSuperModelConfigProvider(),
configDefinitionRepo,
superModelManager.getGeneration(),
responseFactory);
}
public SuperModelController getHandler() { return handler; }
@Override
public ConfigResponse resolveConfig(ApplicationId appId, GetConfigRequest req, Optional<Version> vespaVersion) {
log.log(LogLevel.DEBUG, () -> "SuperModelRequestHandler resolving " + req + " for app id '" + appId + "'");
if (handler != null) {
ConfigResponse configResponse = handler.resolveConfig(req);
log.log(LogLevel.DEBUG, () -> "SuperModelRequestHandler returning response for config " + req +
" with generation " + configResponse.getGeneration());
return configResponse;
}
return null;
}
public <CONFIGTYPE extends ConfigInstance> CONFIGTYPE getConfig(Class<CONFIGTYPE> configClass, ApplicationId applicationId, String configId) throws IOException {
return handler.getConfig(configClass, applicationId, configId);
}
@Override
public Set<ConfigKey<?>> listConfigs(ApplicationId appId, Optional<Version> vespaVersion, boolean recursive) {
throw new UnsupportedOperationException();
}
@Override
public Set<ConfigKey<?>> listNamedConfigs(ApplicationId appId, Optional<Version> vespaVersion, ConfigKey<?> key, boolean recursive) {
throw new UnsupportedOperationException();
}
@Override
public Set<ConfigKey<?>> allConfigsProduced(ApplicationId appId, Optional<Version> vespaVersion) {
throw new UnsupportedOperationException();
}
@Override
public Set<String> allConfigIds(ApplicationId appID, Optional<Version> vespaVersion) {
throw new UnsupportedOperationException();
}
@Override
public boolean hasApplication(ApplicationId appId, Optional<Version> vespaVersion) {
return enabled && appId.equals(ApplicationId.global());
}
@Override
public ApplicationId resolveApplicationId(String hostName) {
return ApplicationId.global();
}
public void enable() {
enabled = true;
}
}
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