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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.container.core.config;
import com.google.inject.AbstractModule;
import com.google.inject.Inject;
import com.google.inject.Injector;
import com.yahoo.component.AbstractComponent;
import com.yahoo.component.ComponentSpecification;
import com.yahoo.component.provider.ComponentRegistry;
import com.yahoo.concurrent.ThreadFactoryFactory;
import com.yahoo.config.FileReference;
import com.yahoo.container.core.DiagnosticsConfig;
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.di.osgi.BundleClasses;
import com.yahoo.container.di.osgi.OsgiUtil;
import com.yahoo.container.logging.AccessLog;
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.language.Linguistics;
import com.yahoo.language.simple.SimpleLinguistics;
import com.yahoo.log.LogLevel;
import com.yahoo.osgi.OsgiImpl;
import com.yahoo.statistics.Statistics;
import org.osgi.framework.Bundle;
import org.osgi.framework.wiring.BundleWiring;
import java.util.ArrayList;
import java.util.Collection;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.logging.Logger;
import java.util.Set;
import static com.yahoo.collections.CollectionUtil.first;
import static com.yahoo.container.util.Util.quote;
/**
* For internal use only.
*
* @author Tony Vaagenes
* @author gjoranv
*/
//TODO: rename
public class HandlersConfigurerDi {
private static final Logger log = Logger.getLogger(HandlersConfigurerDi.class.getName());
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(LogLevel.DEBUG, "RegistriesHack.init " + System.identityHashCode(this));
vespaContainer.setComponentRegistry(allComponents);
vespaContainer.setRequestHandlerRegistry(requestHandlerRegistry);
vespaContainer.setClientProviderRegistry(clientProviderRegistry);
vespaContainer.setServerProviderRegistry(serverProviderRegistry);
}
}
private final com.yahoo.container.Container vespaContainer;
private final OsgiWrapper osgiWrapper;
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.vespaContainer = vespaContainer;
osgiWrapper = new OsgiWrapper(osgiFramework, new BundleLoader(new OsgiImpl(osgiFramework)));
container = new Container(subscriberFactory, configId, deconstructor, osgiWrapper);
getNewComponentGraph(discInjector, false);
}
private static class OsgiWrapper extends OsgiImpl implements com.yahoo.container.di.Osgi {
private final OsgiFramework osgiFramework;
private final BundleLoader bundleLoader;
public OsgiWrapper(OsgiFramework osgiFramework, BundleLoader bundleLoader) {
super(osgiFramework);
this.osgiFramework = osgiFramework;
this.bundleLoader = bundleLoader;
}
@Override
public BundleClasses getBundleClasses(ComponentSpecification bundleSpec, Set<String> packagesToScan) {
//Temporary hack: Using class name since ClassLoaderOsgiFramework is not available at compile time in this bundle.
if (osgiFramework.getClass().getName().equals("com.yahoo.application.container.impl.ClassLoaderOsgiFramework")) {
Bundle syntheticClassPathBundle = first(osgiFramework.bundles());
ClassLoader classLoader = syntheticClassPathBundle.adapt(BundleWiring.class).getClassLoader();
return new BundleClasses(
syntheticClassPathBundle,
OsgiUtil.getClassEntriesForBundleUsingProjectClassPathMappings(classLoader, bundleSpec, packagesToScan));
} else {
Bundle bundle = getBundle(bundleSpec);
if (bundle == null)
throw new RuntimeException("No bundle matching " + quote(bundleSpec));
return new BundleClasses(bundle, OsgiUtil.getClassEntriesInBundleClassPath(bundle, packagesToScan));
}
}
@Override
public void useBundles(Collection<FileReference> bundles) {
log.info("Installing bundles from the latest application");
int bundlesRemovedOrInstalled = bundleLoader.use(new ArrayList<>(bundles));
if (bundlesRemovedOrInstalled > 0) {
refreshPackages();
}
}
}
/**
* Wait for new config to arrive and produce the new graph
*/
public void getNewComponentGraph(Injector discInjector, boolean restartOnRedeploy) {
currentGraph = container.getNewComponentGraph(currentGraph,
createFallbackInjector(vespaContainer, discInjector),
restartOnRedeploy);
}
@SuppressWarnings("deprecation")
private Injector createFallbackInjector(final com.yahoo.container.Container vespaContainer, Injector discInjector) {
return discInjector.createChildInjector(new AbstractModule() {
@Override
protected void configure() {
bind(com.yahoo.container.Container.class).toInstance(vespaContainer);
bind(com.yahoo.statistics.Statistics.class).toInstance(Statistics.nullImplementation);
bind(com.yahoo.container.protect.FreezeDetector.class).toInstance(
new com.yahoo.container.protect.FreezeDetector(
new DiagnosticsConfig(new DiagnosticsConfig.Builder().disabled(true))));
bind(AccessLog.class).toInstance(new AccessLog(new ComponentRegistry<>()));
bind(Executor.class).toInstance(Executors.newCachedThreadPool(ThreadFactoryFactory.getThreadFactory("HandlersConfigurerDI")));
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(ComponentDeconstructor deconstructor) {
container.shutdown(currentGraph, deconstructor);
}
}
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