| /** |
| * 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.cdi.container.internal.container; |
| |
| import java.util.AbstractMap.SimpleImmutableEntry; |
| |
| import org.apache.aries.cdi.container.internal.model.CollectionType; |
| import org.apache.aries.cdi.container.internal.model.ExtendedComponentInstanceDTO; |
| import org.apache.aries.cdi.container.internal.model.ExtendedReferenceDTO; |
| import org.apache.aries.cdi.container.internal.model.ExtendedReferenceTemplateDTO; |
| import org.apache.aries.cdi.container.internal.model.InstanceActivator; |
| import org.apache.aries.cdi.container.internal.util.Conversions; |
| import org.apache.aries.cdi.container.internal.util.Maps; |
| import org.apache.aries.cdi.container.internal.util.Perms; |
| import org.apache.aries.cdi.container.internal.util.SRs; |
| import org.apache.aries.cdi.container.internal.util.Syncro; |
| import org.osgi.framework.ServiceReference; |
| import org.osgi.service.cdi.ReferencePolicy; |
| import org.osgi.service.cdi.ReferencePolicyOption; |
| import org.osgi.service.cdi.runtime.dto.template.ReferenceTemplateDTO; |
| import org.osgi.service.log.Logger; |
| import org.osgi.util.tracker.ServiceTrackerCustomizer; |
| |
| public class ReferenceSync implements ServiceTrackerCustomizer<Object, Object> { |
| |
| public ReferenceSync( |
| ContainerState containerState, |
| ExtendedReferenceDTO referenceDTO, |
| ExtendedComponentInstanceDTO componentInstanceDTO, |
| InstanceActivator.Builder<?> builder) { |
| |
| _containerState = containerState; |
| _referenceDTO = referenceDTO; |
| _componentInstanceDTO = componentInstanceDTO; |
| _builder = builder; |
| _templateDTO = (ExtendedReferenceTemplateDTO)_referenceDTO.template; |
| _log = _containerState.containerLogs().getLogger(getClass()); |
| } |
| |
| @Override |
| public Object addingService(final ServiceReference<Object> reference) { |
| if (!Perms.hasGetServicePermission(_templateDTO.serviceType, _containerState.bundleContext())) { |
| return null; |
| } |
| |
| boolean active = _componentInstanceDTO.active; |
| boolean resolved = (_referenceDTO.matches.size() >= _templateDTO.minimumCardinality); |
| boolean dynamic = (_templateDTO.policy == ReferencePolicy.DYNAMIC); |
| boolean reluctant = (_templateDTO.policyOption == ReferencePolicyOption.RELUCTANT); |
| CollectionType collectionType = _templateDTO.collectionType; |
| boolean requiresUpdate = true; |
| |
| if (resolved && reluctant && active && !dynamic) { |
| requiresUpdate = false; |
| } |
| |
| try (Syncro open = _syncro.open()) { |
| _referenceDTO.matches = SRs.from(_referenceDTO.serviceTracker.getServiceReferences(), reference); |
| |
| if (collectionType == CollectionType.BINDER_SERVICE || |
| collectionType == CollectionType.BINDER_REFERENCE || |
| collectionType == CollectionType.BINDER_BEAN_SERVICE_OBJECTS) { |
| |
| requiresUpdate = false; |
| |
| return _referenceDTO.binder.addingService(reference); |
| } |
| else if (collectionType == CollectionType.PROPERTIES) { |
| return Maps.of(reference.getProperties()); |
| } |
| else if (collectionType == CollectionType.REFERENCE) { |
| return reference; |
| } |
| else if (collectionType == CollectionType.SERVICEOBJECTS) { |
| return new BeanServiceObjectsImpl<>( |
| _containerState.bundleContext().getServiceObjects(reference)); |
| } |
| else if (collectionType == CollectionType.TUPLE) { |
| return new SimpleImmutableEntry<>( |
| Maps.of(reference.getProperties()), |
| _containerState.bundleContext().getService(reference)); |
| } |
| |
| return _containerState.bundleContext().getService(reference); |
| } |
| finally { |
| if (requiresUpdate) { |
| InstanceActivator activator = _builder.setInstance( |
| _componentInstanceDTO |
| ).build(); |
| |
| updateStatically(activator); |
| } |
| } |
| } |
| |
| @Override |
| public void modifiedService(ServiceReference<Object> reference, Object service) { |
| CollectionType collectionType = _templateDTO.collectionType; |
| |
| if (collectionType == CollectionType.BINDER_SERVICE || |
| collectionType == CollectionType.BINDER_REFERENCE || |
| collectionType == CollectionType.BINDER_BEAN_SERVICE_OBJECTS) { |
| |
| _referenceDTO.binder.modifiedService(reference); |
| } |
| else if (collectionType == CollectionType.PROPERTIES || |
| collectionType == CollectionType.REFERENCE || |
| collectionType == CollectionType.SERVICEOBJECTS || |
| collectionType == CollectionType.TUPLE) { |
| |
| removedService(reference, service); |
| addingService(reference); |
| } |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public void removedService(ServiceReference<Object> reference, Object service) { |
| boolean active = _componentInstanceDTO.active; |
| boolean resolved = (_referenceDTO.matches.size() >= _templateDTO.minimumCardinality); |
| boolean dynamic = (_templateDTO.policy == ReferencePolicy.DYNAMIC); |
| CollectionType collectionType = _templateDTO.collectionType; |
| boolean requiresUpdate = true; |
| |
| if (resolved && active && dynamic) { |
| requiresUpdate = false; |
| } |
| |
| try (Syncro open = _syncro.open()) { |
| _referenceDTO.matches.removeIf(d -> d.id == SRs.id(reference)); |
| |
| if (collectionType == CollectionType.BINDER_SERVICE || |
| collectionType == CollectionType.BINDER_REFERENCE || |
| collectionType == CollectionType.BINDER_BEAN_SERVICE_OBJECTS) { |
| |
| requiresUpdate = false; |
| |
| _referenceDTO.binder.removedService(reference); |
| |
| return; |
| } |
| else if (collectionType == CollectionType.PROPERTIES) { |
| return; |
| } |
| else if (collectionType == CollectionType.REFERENCE) { |
| return; |
| } |
| else if (collectionType == CollectionType.SERVICEOBJECTS) { |
| ((BeanServiceObjectsImpl<Object>)service).close(); |
| |
| return; |
| } |
| |
| _containerState.bundleContext().ungetService(reference); |
| } |
| finally { |
| if (requiresUpdate) { |
| InstanceActivator activator = _builder.setInstance( |
| _componentInstanceDTO |
| ).build(); |
| |
| updateStatically(activator); |
| } |
| } |
| } |
| |
| @Override |
| public String toString() { |
| if (_string == null) { |
| _string = Conversions.convert(_referenceDTO.template).to(ReferenceTemplateDTO.class).toString(); |
| } |
| return _string; |
| } |
| |
| private void updateStatically(InstanceActivator activator) { |
| _containerState.submit( |
| activator.closeOp(), activator::close |
| ).then( |
| s -> _containerState.submit( |
| activator.openOp(), activator::open |
| ).onFailure( |
| f -> { |
| _log.error(l -> l.error("CCR Error in OPEN for {} on {}", _componentInstanceDTO.ident(), _containerState.bundle(), f)); |
| |
| _containerState.error(f); |
| } |
| ), |
| f -> { |
| _log.error(l -> l.error("CCR Error in CLODE for {} on {}", _componentInstanceDTO.ident(), _containerState.bundle(), f.getFailure())); |
| |
| _containerState.error(f.getFailure()); |
| } |
| ); |
| } |
| |
| private final InstanceActivator.Builder<?> _builder; |
| private final ExtendedComponentInstanceDTO _componentInstanceDTO; |
| private final ContainerState _containerState; |
| private final Logger _log; |
| private final ExtendedReferenceDTO _referenceDTO; |
| private volatile String _string; |
| private final Syncro _syncro = new Syncro(true); |
| private final ExtendedReferenceTemplateDTO _templateDTO; |
| |
| } |