| /* |
| * 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.feature.apiregions.impl; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| import org.osgi.framework.Version; |
| import org.osgi.framework.hooks.resolver.ResolverHook; |
| import org.osgi.framework.wiring.BundleCapability; |
| import org.osgi.framework.wiring.BundleRequirement; |
| import org.osgi.framework.wiring.BundleRevision; |
| |
| public class PlatformIsolationHook implements ResolverHook { |
| |
| protected static final String OSGI_WIRING_PACKAGE_NAMESPACE = "osgi.wiring.package"; |
| |
| static final Logger LOG = Logger.getLogger(PlatformIsolationHook.class.getName()); |
| |
| private final Map<String, Version> bsnVerMap; |
| |
| PlatformIsolationHook(Map<String, Version> bsnVerMap) { |
| this.bsnVerMap = bsnVerMap; |
| } |
| |
| @Override |
| public void filterResolvable(Collection<BundleRevision> candidates) { |
| // not used in this version |
| } |
| |
| @Override |
| public void filterSingletonCollisions(BundleCapability singleton, Collection<BundleCapability> collisionCandidates) { |
| // not used in this version |
| } |
| |
| @Override |
| public void filterMatches(BundleRequirement requirement, Collection<BundleCapability> candidates) { |
| for (Iterator<BundleCapability> it = candidates.iterator(); it.hasNext();) { |
| BundleCapability candidate = it.next(); |
| |
| BundleRevision rev = candidate.getRevision(); |
| |
| // bundle is allowed to wire to itself |
| if (requirement.getRevision().getBundle().getBundleId() == rev.getBundle().getBundleId()) { |
| continue; |
| } |
| |
| LOG.log(Level.FINE, "Checking if " |
| + requirement |
| + " can resolve from " |
| + candidate |
| + "..."); |
| |
| // is it a restricted bundle? |
| if (filter(requirement, candidate)) { |
| it.remove(); |
| LOG.log(Level.INFO, "Prevented " |
| + requirement |
| + " from resolving to " |
| + candidate); |
| } else if (LOG.isLoggable(Level.FINE)) { |
| LOG.log(Level.FINE, "Check OK:" |
| + requirement |
| + " can resolve to " |
| + candidate |
| + "..."); |
| } |
| } |
| } |
| |
| boolean filter(BundleRequirement requirement, BundleCapability candidate) { |
| String requirementNamespace = requirement.getNamespace(); |
| String candidateNamespace = candidate.getNamespace(); |
| if (!OSGI_WIRING_PACKAGE_NAMESPACE.equals(requirementNamespace) |
| || !requirementNamespace.equals(candidateNamespace)) { |
| return false; // checking wiring packages only |
| } |
| |
| BundleRevision candidateRevision = candidate.getRevision(); |
| String candidateSymbolicName = candidateRevision.getSymbolicName(); |
| Version candidateVersion = candidateRevision.getVersion(); |
| |
| Version expectedVersion = bsnVerMap.get(candidateSymbolicName); |
| |
| return expectedVersion != null && !expectedVersion.equals(candidateVersion); |
| } |
| |
| @Override |
| public void end() { |
| // not used in this version |
| } |
| |
| } |