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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.container.core.config;
import com.google.inject.AbstractModule;
import com.google.inject.Injector;
import com.yahoo.component.AbstractComponent;
import com.yahoo.component.ComponentSpecification;
import com.yahoo.component.annotation.Inject;
import com.yahoo.component.provider.ComponentRegistry;
import com.yahoo.concurrent.ThreadFactoryFactory;
import com.yahoo.config.FileReference;
import com.yahoo.container.di.ComponentDeconstructor;
import com.yahoo.container.di.Container;
import com.yahoo.container.di.componentgraph.core.ComponentGraph;
import com.yahoo.container.di.config.SubscriberFactory;
import com.yahoo.container.logging.AccessLog;
import com.yahoo.filedistribution.fileacquirer.FileAcquirer;
import com.yahoo.jdisc.application.BsnVersion;
import com.yahoo.jdisc.application.OsgiFramework;
import com.yahoo.jdisc.handler.RequestHandler;
import com.yahoo.jdisc.service.ClientProvider;
import com.yahoo.jdisc.service.ServerProvider;
import com.yahoo.osgi.OsgiImpl;
import com.yahoo.osgi.OsgiWrapper;
import org.osgi.framework.Bundle;
import org.osgi.framework.Version;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Set;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.stream.Collectors;
/**
* For internal use only.
*
* @author Tony Vaagenes
* @author gjoranv
*/
//TODO: rename
public class HandlersConfigurerDi {
private static final Logger log = Logger.getLogger(HandlersConfigurerDi.class.getName());
private static final Executor fallbackExecutor = Executors.newCachedThreadPool(
ThreadFactoryFactory.getThreadFactory("HandlersConfigurerDI"));
private final com.yahoo.container.Container vespaContainer;
private final Container container;
private volatile ComponentGraph currentGraph = new ComponentGraph(0);
public HandlersConfigurerDi(SubscriberFactory subscriberFactory,
com.yahoo.container.Container vespaContainer,
String configId,
ComponentDeconstructor deconstructor,
Injector discInjector,
OsgiFramework osgiFramework) {
this(subscriberFactory, vespaContainer, configId, deconstructor, discInjector,
new ContainerAndDiOsgi(osgiFramework, vespaContainer.getFileAcquirer()));
}
// Only public for testing
public HandlersConfigurerDi(SubscriberFactory subscriberFactory,
com.yahoo.container.Container vespaContainer,
String configId,
ComponentDeconstructor deconstructor,
Injector discInjector,
OsgiWrapper osgiWrapper) {
this.vespaContainer = vespaContainer;
container = new Container(subscriberFactory, configId, deconstructor, osgiWrapper);
Runnable cleanupTask = waitForNextGraphGeneration(discInjector, true);
cleanupTask.run();
}
private static class ContainerAndDiOsgi extends OsgiImpl implements OsgiWrapper {
private final OsgiFramework osgiFramework;
private final ApplicationBundleLoader applicationBundleLoader;
private final PlatformBundleLoader platformBundleLoader;
public ContainerAndDiOsgi(OsgiFramework osgiFramework, FileAcquirer fileAcquirer) {
super(osgiFramework);
this.osgiFramework = osgiFramework;
applicationBundleLoader = new ApplicationBundleLoader(this, new FileAcquirerBundleInstaller(fileAcquirer));
platformBundleLoader = new PlatformBundleLoader(this);
}
@Override
public void installPlatformBundles(Collection<String> bundlePaths) {
// Don't install physical bundles for test frameworks, where all platform bundles are on the classpath.
if (osgiFramework.isFelixFramework()) {
log.fine("Installing platform bundles.");
platformBundleLoader.useBundles(new ArrayList<>(bundlePaths));
}
}
@Override
public void useApplicationBundles(Collection<FileReference> bundles, long generation) {
if (! bundles.isEmpty()) log.info("Installing bundles for application generation " + generation);
applicationBundleLoader.useBundles(new ArrayList<>(bundles));
}
@Override
public Set<Bundle> completeBundleGeneration(GenerationStatus status) {
return applicationBundleLoader.completeGeneration(status);
}
@Override
protected String bundleResolutionErrorMessage(ComponentSpecification bundleSpec) {
List<BsnVersion> activeBundles = applicationBundleLoader.activeBundlesBsnVersion();
List<Version> activeVersions = activeVersionsOfBundle(bundleSpec, activeBundles);
String versionsMessage = "";
if (activeVersions.size() == 1) {
versionsMessage = "There is an installed bundle with the same name with version: " + activeVersions.get(0) + " ";
} else if (activeVersions.size() > 1) {
versionsMessage = "There are installed bundles with the same name with versions: " + activeVersions + " ";
}
if (qualifierIsUsed(bundleSpec, activeVersions)) {
versionsMessage += " Note that qualifier strings must be matched exactly. ";
}
return String.format("%sInstalled application bundles: [%s]",
versionsMessage,
activeBundles.stream()
.map(BsnVersion::toReadableString)
.collect(Collectors.joining(", ")));
}
private static boolean qualifierIsUsed(ComponentSpecification bundleSpec, List<Version> activeVersions) {
return ! bundleSpec.getVersionSpecification().getQualifier().isEmpty() ||
activeVersions.stream().anyMatch(version -> ! version.getQualifier().isEmpty());
}
private static List<Version> activeVersionsOfBundle(ComponentSpecification bundleSpec, List<BsnVersion> activeBundles) {
return activeBundles.stream()
.filter(bundle -> bundle.symbolicName().equals(bundleSpec.getName()))
.map(BsnVersion::version)
.toList();
}
}
/**
* Wait for new config to arrive and produce the new graph
* @return Task for deconstructing previous component graph and bundles
*/
public Runnable waitForNextGraphGeneration(Injector discInjector, boolean isInitializing) {
Container.ComponentGraphResult result = container.waitForNextGraphGeneration(
this.currentGraph,
createFallbackInjector(vespaContainer, discInjector),
isInitializing);
this.currentGraph = result.newGraph();
return result.oldComponentsCleanupTask();
}
private Injector createFallbackInjector(com.yahoo.container.Container vespaContainer, Injector discInjector) {
return discInjector.createChildInjector(new AbstractModule() {
@Override
protected void configure() {
// Provide a singleton instance for all component fallbacks,
// otherwise fallback injection may lead to a cascade of components requiring reconstruction.
bind(com.yahoo.container.Container.class).toInstance(vespaContainer);
bind(AccessLog.class).toInstance(AccessLog.NONE_INSTANCE);
bind(Executor.class).toInstance(fallbackExecutor);
if (vespaContainer.getFileAcquirer() != null)
bind(com.yahoo.filedistribution.fileacquirer.FileAcquirer.class).toInstance(vespaContainer.getFileAcquirer());
}
});
}
public void reloadConfig(long generation) {
container.reloadConfig(generation);
}
public <T> T getComponent(Class<T> componentClass) {
return currentGraph.getInstance(componentClass);
}
public void shutdown() { container.shutdown(currentGraph); }
public void shutdownConfigRetriever() { container.shutdownConfigRetriever(); }
/** Returns the currently active application configuration generation */
public long generation() { return currentGraph.generation(); }
public static class RegistriesHack {
@Inject
public RegistriesHack(com.yahoo.container.Container vespaContainer,
ComponentRegistry<AbstractComponent> allComponents,
ComponentRegistry<RequestHandler> requestHandlerRegistry,
ComponentRegistry<ClientProvider> clientProviderRegistry,
ComponentRegistry<ServerProvider> serverProviderRegistry) {
log.log(Level.FINE, () -> "RegistriesHack.init " + System.identityHashCode(this));
vespaContainer.setComponentRegistry(allComponents);
vespaContainer.setRequestHandlerRegistry(requestHandlerRegistry);
vespaContainer.setClientProviderRegistry(clientProviderRegistry);
vespaContainer.setServerProviderRegistry(serverProviderRegistry);
}
}
}
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