| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| ~ Licensed to the Apache Software Foundation (ASF) under one |
| ~ or more contributor license agreements. See the NOTICE file |
| ~ distributed with this work for additional information |
| ~ regarding copyright ownership. The ASF licenses this file |
| ~ to you under the Apache License, Version 2.0 (the |
| ~ "License"); you may not use this file except in compliance |
| ~ with the License. You may obtain a copy of the License at |
| ~ |
| ~ http://www.apache.org/licenses/LICENSE-2.0 |
| ~ |
| ~ Unless required by applicable law or agreed to in writing, |
| ~ software distributed under the License is distributed on an |
| ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| ~ KIND, either express or implied. See the License for the |
| ~ specific language governing permissions and limitations |
| ~ under the License. |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ |
| package org.apache.sling.scripting.resolver.internal; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.sling.scripting.resolver.BundledScriptFinder; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.BundleEvent; |
| import org.osgi.framework.ServiceRegistration; |
| import org.osgi.framework.Version; |
| import org.osgi.framework.wiring.BundleCapability; |
| import org.osgi.framework.wiring.BundleWiring; |
| import org.osgi.service.component.annotations.Activate; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Deactivate; |
| import org.osgi.service.component.annotations.Reference; |
| import org.osgi.service.component.annotations.ReferencePolicy; |
| import org.osgi.util.tracker.BundleTracker; |
| import org.osgi.util.tracker.BundleTrackerCustomizer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.script.ScriptEngineManager; |
| import javax.servlet.Servlet; |
| |
| import java.util.Arrays; |
| import java.util.Hashtable; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| |
| @Component( |
| service = {} |
| ) |
| public class BundledScriptTracker implements BundleTrackerCustomizer<ServiceRegistration<Servlet>> { |
| |
| private static final Logger LOGGER = LoggerFactory.getLogger(BundledScriptTracker.class); |
| |
| @Reference |
| private BundledScriptFinder bundledScriptFinder; |
| |
| @Reference |
| private ScriptContextProvider scriptContextProvider; |
| |
| public static final String NS_JAVAX_SCRIPT_CAPABILITY = "javax.script"; |
| public static final String AT_SLING_RESOURCE_TYPE = "sling.resourceType"; |
| public static final String AT_SLING_RESOURCE_TYPE_VERSION = "sling.resourceType.version"; |
| |
| private volatile BundleContext m_context; |
| private volatile BundleTracker<ServiceRegistration<Servlet>> m_tracker; |
| |
| @Activate |
| private void activate(BundleContext context) { |
| m_context = context; |
| m_tracker = new BundleTracker<>(context, Bundle.ACTIVE, this); |
| m_tracker.open(); |
| } |
| |
| @Deactivate |
| private void deactivate() { |
| m_tracker.close(); |
| } |
| |
| @Override |
| public ServiceRegistration<Servlet> addingBundle(Bundle bundle, BundleEvent event) { |
| BundleWiring bundleWiring = bundle.adapt(BundleWiring.class); |
| List<BundleCapability> capabilities = bundleWiring.getCapabilities(NS_JAVAX_SCRIPT_CAPABILITY); |
| LOGGER.debug("Inspecting bundle {} for {} capability.", bundle.getSymbolicName(), NS_JAVAX_SCRIPT_CAPABILITY); |
| String[] resourceTypes = capabilities.stream().map(cap -> { |
| Map<String, Object> attributes = cap.getAttributes(); |
| String resourceType = (String) attributes.get(AT_SLING_RESOURCE_TYPE); |
| Version version = (Version) attributes.get(AT_SLING_RESOURCE_TYPE_VERSION); |
| if (StringUtils.isNotEmpty(resourceType) && version != null) { |
| return resourceType + "/" + version; |
| } else if (StringUtils.isNotEmpty(resourceType)) { |
| return resourceType; |
| } |
| return null; |
| }).filter(Objects::nonNull).toArray(String[]::new); |
| if (resourceTypes.length > 0) { |
| Hashtable<String, Object> properties = new Hashtable<>(); |
| properties.put("sling.servlet.resourceTypes", resourceTypes); |
| properties.put("sling.servlet.methods", new String[]{"TRACE", "OPTIONS", "GET", "HEAD", "POST", "PUT", "DELETE"}); |
| LOGGER.debug("Registering bundle {} for {} resourceTypes.", bundle.getSymbolicName(), Arrays.asList(resourceTypes)); |
| return m_context.registerService(Servlet.class, new BundledScriptServlet(bundledScriptFinder, bundle, scriptContextProvider), properties); |
| } else { |
| return null; |
| } |
| } |
| |
| @Override |
| public void modifiedBundle(Bundle bundle, BundleEvent event, ServiceRegistration<Servlet> reg) { |
| LOGGER.warn(String.format("Unexpected modified event: %s for bundle %s", event.toString(), bundle.toString())); |
| } |
| |
| @Override |
| public void removedBundle(Bundle bundle, BundleEvent event, ServiceRegistration<Servlet> reg) { |
| LOGGER.debug("Bundle {} removed", bundle.getSymbolicName()); |
| reg.unregister(); |
| } |
| } |