| /* |
| * Licensed 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.aries.subsystem.core.internal; |
| |
| import java.io.InputStream; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.aries.util.io.IOUtils; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleException; |
| import org.osgi.framework.Version; |
| import org.osgi.framework.startlevel.BundleStartLevel; |
| import org.osgi.framework.wiring.BundleCapability; |
| import org.osgi.framework.wiring.BundleRequirement; |
| import org.osgi.framework.wiring.BundleRevision; |
| import org.osgi.framework.wiring.BundleWiring; |
| import org.osgi.namespace.service.ServiceNamespace; |
| import org.osgi.resource.Capability; |
| import org.osgi.resource.Requirement; |
| import org.osgi.resource.Resource; |
| import org.osgi.service.coordinator.Coordination; |
| import org.osgi.service.coordinator.Participant; |
| import org.osgi.service.repository.RepositoryContent; |
| import org.osgi.service.subsystem.SubsystemException; |
| |
| public class BundleResourceInstaller extends ResourceInstaller { |
| /* |
| * Maps a BundleResource to a BundleRevision for the purpose of tracking |
| * any service requirements or capabilities. The instance is given to the |
| * Subsystems data structure as the constituent object. |
| * |
| * The resource variable is allowed to be null so this class can be used |
| * when removing constituents from the data structure; however, note that |
| * service capabilities and requirements will not be available. |
| */ |
| static class BundleConstituent implements BundleRevision { |
| private final Resource resource; |
| private final BundleRevision revision; |
| |
| public BundleConstituent(Resource resource, BundleRevision revision) { |
| if (resource instanceof BundleRevision) { |
| try { |
| this.resource = new BundleRevisionResource((BundleRevision)resource); |
| } |
| catch (SubsystemException e) { |
| throw e; |
| } |
| catch (Exception e) { |
| throw new SubsystemException(e); |
| } |
| } |
| else |
| this.resource = resource; |
| this.revision = revision; |
| } |
| |
| @Override |
| public List<Capability> getCapabilities(String namespace) { |
| List<Capability> result = new ArrayList<Capability>(revision.getCapabilities(namespace)); |
| if (resource != null && (namespace == null || ServiceNamespace.SERVICE_NAMESPACE.equals(namespace))) |
| for (Capability capability : resource.getCapabilities(ServiceNamespace.SERVICE_NAMESPACE)) |
| result.add(new BasicCapability.Builder() |
| .namespace(capability.getNamespace()) |
| .attributes(capability.getAttributes()) |
| .directives(capability.getDirectives()) |
| // Use the BundleRevision as the resource so it can be identified as a |
| // runtime resource within the system repository. |
| .resource(revision) |
| .build()); |
| return Collections.unmodifiableList(result); |
| } |
| |
| @Override |
| public List<Requirement> getRequirements(String namespace) { |
| List<Requirement> result = new ArrayList<Requirement>(revision.getRequirements(namespace)); |
| if (resource != null && (namespace == null || ServiceNamespace.SERVICE_NAMESPACE.equals(namespace))) |
| for (Requirement requiremnet : resource.getRequirements(ServiceNamespace.SERVICE_NAMESPACE)) |
| result.add(new BasicRequirement.Builder() |
| .namespace(requiremnet.getNamespace()) |
| .attributes(requiremnet.getAttributes()) |
| .directives(requiremnet.getDirectives()) |
| // Use the BundleRevision as the resource so it can be identified as a |
| // runtime resource within the system repository. |
| .resource(revision) |
| .build()); |
| return Collections.unmodifiableList(result); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (o == this) |
| return true; |
| if (!(o instanceof BundleConstituent)) |
| return false; |
| BundleConstituent that = (BundleConstituent)o; |
| return revision.equals(that.revision); |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = 17; |
| result = 31 * result + revision.hashCode(); |
| return result; |
| } |
| |
| @Override |
| public Bundle getBundle() { |
| return revision.getBundle(); |
| } |
| |
| public Resource getResource() { |
| return resource; |
| } |
| |
| public BundleRevision getRevision() { |
| return revision; |
| } |
| |
| @Override |
| public String getSymbolicName() { |
| return revision.getSymbolicName(); |
| } |
| |
| @Override |
| public Version getVersion() { |
| return revision.getVersion(); |
| } |
| |
| @Override |
| public List<BundleCapability> getDeclaredCapabilities(String namespace) { |
| return revision.getDeclaredCapabilities(namespace); |
| } |
| |
| @Override |
| public List<BundleRequirement> getDeclaredRequirements(String namespace) { |
| return revision.getDeclaredRequirements(namespace); |
| } |
| |
| @Override |
| public int getTypes() { |
| return revision.getTypes(); |
| } |
| |
| @Override |
| public BundleWiring getWiring() { |
| return revision.getWiring(); |
| } |
| |
| @Override |
| public String toString() { |
| return revision.toString(); |
| } |
| } |
| |
| public BundleResourceInstaller(Coordination coordination, Resource resource, BasicSubsystem subsystem) { |
| super(coordination, resource, subsystem); |
| } |
| |
| public Resource install() { |
| BundleRevision revision; |
| if (resource instanceof BundleRevision) |
| revision = (BundleRevision)resource; |
| else { |
| ThreadLocalSubsystem.set(provisionTo); |
| revision = installBundle(); |
| } |
| addReference(revision); |
| addConstituent(new BundleConstituent(resource, revision)); |
| return revision; |
| } |
| |
| private BundleRevision installBundle() { |
| final Bundle bundle; |
| InputStream is = ((RepositoryContent)resource).getContent(); |
| try { |
| bundle = provisionTo.getRegion().installBundleAtLocation(getLocation(), is); |
| } |
| catch (BundleException e) { |
| throw new SubsystemException(e); |
| } |
| finally { |
| // Although Region.installBundle ultimately calls BundleContext.install, |
| // which closes the input stream, an exception may occur before this |
| // happens. Also, the Region API does not guarantee the stream will |
| // be closed. |
| IOUtils.close(is); |
| } |
| coordination.addParticipant(new Participant() { |
| public void ended(Coordination coordination) throws Exception { |
| // Nothing |
| } |
| |
| public void failed(Coordination coordination) throws Exception { |
| bundle.uninstall(); |
| } |
| }); |
| // Set the start level of all bundles managed (i.e. installed) by the |
| // subsystems implementation to 1 in case the framework's default bundle |
| // start level has been changed. Otherwise, start failures will occur |
| // if a subsystem is started at a lower start level than the default. |
| // Setting the start level does no harm since all managed bundles are |
| // started transiently anyway. |
| bundle.adapt(BundleStartLevel.class).setStartLevel(1); |
| return bundle.adapt(BundleRevision.class); |
| } |
| } |