| /* |
| * 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.felix.scr.impl.manager; |
| |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Dictionary; |
| import java.util.IdentityHashMap; |
| |
| import org.apache.felix.scr.impl.inject.ComponentMethods; |
| import org.apache.felix.scr.impl.inject.LifecycleMethod; |
| import org.apache.felix.scr.impl.inject.MethodResult; |
| import org.apache.felix.scr.impl.inject.RefPair; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.ServiceRegistration; |
| import org.osgi.service.component.ComponentConstants; |
| import org.osgi.service.component.ComponentInstance; |
| import org.osgi.service.log.LogService; |
| |
| |
| /** |
| * The <code>ServiceFactoryComponentManager</code> for components specified with <service serviceFactory='true'/> |
| * in the xml metadata. The component must be delayed, not immediate or factory. |
| */ |
| public class ServiceFactoryComponentManager<S> extends SingleComponentManager<S> |
| { |
| |
| @Override |
| public void setServiceProperties(Dictionary<String, ?> serviceProperties) |
| { |
| throw new IllegalStateException( "Bundle or instance scoped service properties are immutable" ); |
| } |
| |
| |
| @Override |
| void postRegister() |
| { |
| // do nothing |
| } |
| |
| // maintain the map of ComponentContext objects created for the |
| // service instances |
| private IdentityHashMap<S, ComponentContextImpl<S>> serviceContexts = new IdentityHashMap<>(); |
| |
| /** |
| * @param container ComponentHolder for configuration management |
| * @param componentMethods |
| */ |
| public ServiceFactoryComponentManager( ComponentContainer<S> container, ComponentMethods<S> componentMethods ) |
| { |
| super( container, componentMethods ); |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see org.apache.felix.scr.AbstractComponentManager#deleteComponent() |
| */ |
| @Override |
| protected void deleteComponent( int reason ) |
| { |
| if ( !isStateLocked() ) |
| { |
| throw new IllegalStateException( "need write lock (deleteComponent)" ); |
| } |
| for (ComponentContextImpl<S> componentContext: getComponentContexts() ) |
| { |
| disposeImplementationObject( componentContext, reason ); |
| getLogger().log( LogService.LOG_DEBUG, "Unset implementation object for component in deleteComponent for reason {0}", |
| null, REASONS[ reason ] ); |
| } |
| serviceContexts.clear(); |
| clearServiceProperties(); |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see org.osgi.framework.ServiceFactory#getService(org.osgi.framework.Bundle, org.osgi.framework.ServiceRegistration) |
| */ |
| @Override |
| public S getService( Bundle bundle, ServiceRegistration<S> serviceRegistration ) |
| { |
| getLogger().log( LogService.LOG_DEBUG, "ServiceFactory.getService()", null ); |
| |
| // When the getServiceMethod is called, the implementation object must be created |
| |
| ComponentContextImpl<S> componentContext = new ComponentContextImpl<>(this, bundle, serviceRegistration); |
| if (collectDependencies(componentContext) ) |
| { |
| getLogger().log( LogService.LOG_DEBUG, |
| "getService (ServiceFactory) dependencies collected.", |
| null ); |
| |
| } |
| else |
| { |
| //cannot obtain service from a required reference |
| return null; |
| } |
| State previousState = getState(); |
| // private ComponentContext and implementation instances |
| S service = createImplementationObject( bundle, new SetImplementationObject<S>() |
| { |
| @Override |
| public void presetComponentContext( ComponentContextImpl<S> componentContext ) |
| { |
| synchronized ( serviceContexts ) |
| { |
| serviceContexts.put( componentContext.getImplementationObject( false ), componentContext ); |
| } |
| } |
| |
| @Override |
| public void resetImplementationObject( S implementationObject ) |
| { |
| synchronized ( serviceContexts ) |
| { |
| serviceContexts.remove( implementationObject ); |
| } |
| } |
| |
| }, componentContext ); |
| |
| // register the components component context if successful |
| if ( service == null ) |
| { |
| // log that the service factory component cannot be created (we don't |
| // know why at this moment; this should already have been logged) |
| getLogger().log( LogService.LOG_DEBUG, "Failed creating the component instance; see log for reason", null ); |
| } |
| else |
| { |
| setState(previousState, State.active); |
| } |
| |
| return service; |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see org.osgi.framework.ServiceFactory#ungetService(org.osgi.framework.Bundle, org.osgi.framework.ServiceRegistration, java.lang.Object) |
| */ |
| @Override |
| public void ungetService( Bundle bundle, ServiceRegistration<S> registration, S service ) |
| { |
| getLogger().log( LogService.LOG_DEBUG, "ServiceFactory.ungetService()", null ); |
| |
| // When the ungetServiceMethod is called, the implementation object must be deactivated |
| // private ComponentContext and implementation instances |
| final ComponentContextImpl<S> serviceContext; |
| synchronized ( serviceContexts ) |
| { |
| serviceContext = serviceContexts.get( service ); |
| } |
| disposeImplementationObject( serviceContext, ComponentConstants.DEACTIVATION_REASON_DISPOSED ); |
| synchronized ( serviceContexts ) |
| { |
| serviceContexts.remove( service ); |
| // if this was the last use of the component, go back to REGISTERED state |
| State previousState; |
| if ( serviceContexts.isEmpty() && (previousState = getState()) == State.active ) |
| { |
| setState(previousState, State.satisfied); |
| } |
| } |
| } |
| |
| private Collection<ComponentContextImpl<S>> getComponentContexts() |
| { |
| synchronized ( serviceContexts ) |
| { |
| return new ArrayList<>( serviceContexts.values() ); |
| } |
| } |
| |
| @Override |
| <T> void invokeBindMethod( DependencyManager<S, T> dependencyManager, RefPair<S, T> refPair, int trackingCount ) |
| { |
| for ( ComponentContextImpl<S> cc : getComponentContexts() ) |
| { |
| dependencyManager.invokeBindMethod( cc, refPair, trackingCount, cc.getEdgeInfo( dependencyManager ) ); |
| } |
| } |
| |
| @Override |
| <T> boolean invokeUpdatedMethod( DependencyManager<S, T> dependencyManager, RefPair<S, T> refPair, int trackingCount ) |
| { |
| // as all instances are treated the same == have the same updated signatures for methods/fields |
| // we just need one result |
| boolean reactivate = false; |
| for ( ComponentContextImpl<S> cc : getComponentContexts() ) |
| { |
| if ( dependencyManager.invokeUpdatedMethod( cc, refPair, trackingCount, cc.getEdgeInfo( dependencyManager ) ) ) |
| { |
| reactivate = true; |
| } |
| } |
| return reactivate; |
| } |
| |
| @Override |
| <T> void invokeUnbindMethod( DependencyManager<S, T> dependencyManager, RefPair<S, T> oldRefPair, int trackingCount ) |
| { |
| for ( ComponentContextImpl<S> cc : getComponentContexts() ) |
| { |
| dependencyManager.invokeUnbindMethod( cc, oldRefPair, trackingCount, cc.getEdgeInfo( dependencyManager ) ); |
| } |
| } |
| |
| @Override |
| protected MethodResult invokeModifiedMethod() |
| { |
| LifecycleMethod modifiedMethod = getComponentMethods().getModifiedMethod(); |
| MethodResult result = MethodResult.VOID; |
| for ( ComponentContextImpl<S> componentContext : getComponentContexts() ) |
| { |
| S instance = componentContext.getImplementationObject(true); |
| result = modifiedMethod.invoke( instance, |
| componentContext, -1, MethodResult.VOID ); |
| |
| } |
| return result; |
| } |
| |
| @Override |
| boolean hasInstance() |
| { |
| return !serviceContexts.isEmpty(); |
| } |
| |
| //---------- Component interface |
| |
| @Override |
| public ComponentInstance getComponentInstance() |
| { |
| // TODO: should return the component instance corresponding to the |
| // bundle owning ScrService |
| return super.getComponentInstance(); |
| } |
| |
| } |