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/*
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*
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* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
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* See the License for the specific
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* file and include the License file at glassfish/legal/LICENSE.txt.
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package fish.payara.nucleus.microprofile.config.source.extension;
import java.beans.PropertyChangeEvent;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.logging.Logger;
import jakarta.annotation.PostConstruct;
import jakarta.annotation.PreDestroy;
import jakarta.inject.Inject;
import jakarta.inject.Named;
import com.sun.enterprise.config.serverbeans.Config;
import org.glassfish.api.admin.ServerEnvironment;
import org.glassfish.api.event.EventListener;
import org.glassfish.api.event.EventTypes;
import org.glassfish.api.event.Events;
import org.glassfish.hk2.api.ServiceHandle;
import org.glassfish.hk2.api.ServiceLocator;
import org.jvnet.hk2.annotations.Optional;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.config.Changed;
import org.jvnet.hk2.config.ConfigBeanProxy;
import org.jvnet.hk2.config.ConfigListener;
import org.jvnet.hk2.config.ConfigSupport;
import org.jvnet.hk2.config.NotProcessed;
import org.jvnet.hk2.config.Transactions;
import org.jvnet.hk2.config.UnprocessedChangeEvents;
import fish.payara.nucleus.microprofile.config.spi.ConfigSourceConfiguration;
import fish.payara.nucleus.microprofile.config.spi.MicroprofileConfigConfiguration;
@Service(name = "config-source-extension-handler")
public class ExtensionConfigSourceService implements EventListener, ConfigListener {
private static final Logger logger = Logger.getLogger(ExtensionConfigSourceService.class.getName());
@Inject
@Named(ServerEnvironment.DEFAULT_INSTANCE_NAME)
@Optional
private MicroprofileConfigConfiguration configuration;
@Inject
private ServiceLocator locator;
@Inject
private Events events;
@Inject
private Transactions transactions;
private final Set handlers;
private boolean isInstance;
public ExtensionConfigSourceService() {
this.handlers = new HashSet<>();
}
@PostConstruct
void initialize() {
// Get the config if it's not been injected
if (configuration == null) {
configuration = locator.getService(MicroprofileConfigConfiguration.class);
}
// Register an event listener
if (events != null) {
events.register(this);
}
// Is this service running on an instance?
final ServerEnvironment env = locator.getService(ServerEnvironment.class);
isInstance = env.isInstance();
// Populate the config sources list
List> configSourceHandles = locator.getAllServiceHandles(ExtensionConfigSource.class);
for (ServiceHandle configSourceHandle : configSourceHandles) {
Class extensionClass = configSourceHandle.getActiveDescriptor().getImplementationClass();
Class configClass = ConfigSourceExtensions.getConfigurationClass(extensionClass);
if (configClass != null) {
handlers.add(new ExtensionConfigSourceHandler(configSourceHandle, configClass, configuration.getConfigSourceConfigurationByType(configClass)));
} else {
handlers.add(new ExtensionConfigSourceHandler(configSourceHandle));
}
}
}
@PreDestroy
void destroy() {
handlers.clear();
if (events != null) {
events.unregister(this);
}
}
@Override
public void event(Event event) {
if (event.is(EventTypes.SERVER_READY)) {
bootstrapConfigSources();
}
if (event.is(EventTypes.SERVER_SHUTDOWN)) {
shutdownConfigSources();
}
transactions.addListenerForType(MicroprofileConfigConfiguration.class, this);
}
public Set getExtensionSources() {
Set sources = new HashSet<>();
for (ExtensionConfigSourceHandler handler : handlers) {
sources.add(handler.getProxyConfigSource());
}
return sources;
}
private void bootstrapConfigSources() {
handlers.forEach(ExtensionConfigSourceHandler::bootstrap);
}
private void shutdownConfigSources() {
handlers.forEach(ExtensionConfigSourceHandler::destroy);
}
@Override
public UnprocessedChangeEvents changed(PropertyChangeEvent[] events) {
boolean isCurrentInstanceMatchTarget = false;
if (isInstance) {
isCurrentInstanceMatchTarget = true;
} else {
for (PropertyChangeEvent pe : events) {
ConfigBeanProxy proxy = (ConfigBeanProxy) pe.getSource();
while (proxy != null && !(proxy instanceof Config)) {
proxy = proxy.getParent();
}
if (proxy != null && ((Config) proxy).isDas()) {
isCurrentInstanceMatchTarget = true;
break;
}
}
}
if (isCurrentInstanceMatchTarget) {
return ConfigSupport.sortAndDispatch(events, new Changed() {
@Override
public NotProcessed changed(TYPE type, Class changedType, T changedInstance) {
if (changedType.equals(MicroprofileConfigConfiguration.class)) {
configuration = (MicroprofileConfigConfiguration) changedInstance;
}
return null;
}
}, logger);
}
return null;
}
public void reconfigure(ConfigSourceConfiguration config) {
for (ExtensionConfigSourceHandler handler : handlers) {
Class configClass = handler.getConfigClass();
if (configClass != null && configClass.isAssignableFrom(config.getClass())) {
handler.reconfigure(config);
break;
}
}
}
}