| /* |
| * 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.camel.blueprint; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.apache.camel.TypeConverter; |
| import org.apache.camel.blueprint.handler.CamelNamespaceHandler; |
| import org.apache.camel.core.osgi.OsgiBeanRepository; |
| import org.apache.camel.core.osgi.OsgiCamelContextHelper; |
| import org.apache.camel.core.osgi.OsgiCamelContextPublisher; |
| import org.apache.camel.core.osgi.OsgiFactoryFinderResolver; |
| import org.apache.camel.core.osgi.OsgiTypeConverter; |
| import org.apache.camel.core.osgi.utils.BundleContextUtils; |
| import org.apache.camel.core.osgi.utils.BundleDelegatingClassLoader; |
| import org.apache.camel.impl.DefaultCamelContext; |
| import org.apache.camel.spi.BeanRepository; |
| import org.apache.camel.spi.EventNotifier; |
| import org.apache.camel.spi.FactoryFinder; |
| import org.apache.camel.spi.ModelJAXBContextFactory; |
| import org.apache.camel.support.DefaultRegistry; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.ServiceEvent; |
| import org.osgi.framework.ServiceListener; |
| import org.osgi.framework.ServiceRegistration; |
| import org.osgi.service.blueprint.container.BlueprintContainer; |
| import org.osgi.service.blueprint.container.BlueprintEvent; |
| import org.osgi.service.blueprint.container.BlueprintListener; |
| |
| /** |
| * OSGi Blueprint based {@link org.apache.camel.CamelContext}. |
| */ |
| public class BlueprintCamelContext extends DefaultCamelContext implements ServiceListener, BlueprintListener { |
| |
| protected final AtomicBoolean routeDefinitionValid = new AtomicBoolean(true); |
| |
| private BundleContext bundleContext; |
| private BlueprintContainer blueprintContainer; |
| private ServiceRegistration<?> registration; |
| private BlueprintCamelStateService bundleStateService; |
| |
| public BlueprintCamelContext(BundleContext bundleContext, BlueprintContainer blueprintContainer) { |
| super(false); |
| this.bundleContext = bundleContext; |
| this.blueprintContainer = blueprintContainer; |
| |
| // inject common osgi |
| OsgiCamelContextHelper.osgiUpdate(this, bundleContext); |
| |
| // and these are blueprint specific |
| BeanRepository repo1 = new BlueprintContainerBeanRepository(getBlueprintContainer()); |
| OsgiBeanRepository repo2 = new OsgiBeanRepository(bundleContext); |
| setRegistry(new DefaultRegistry(repo1, repo2)); |
| // Need to clean up the OSGi service when camel context is closed. |
| addLifecycleStrategy(repo2); |
| |
| setComponentResolver(new BlueprintComponentResolver(bundleContext)); |
| setLanguageResolver(new BlueprintLanguageResolver(bundleContext)); |
| setDataFormatResolver(new BlueprintDataFormatResolver(bundleContext)); |
| setApplicationContextClassLoader(new BundleDelegatingClassLoader(bundleContext.getBundle())); |
| init(); |
| } |
| |
| @Override |
| protected ModelJAXBContextFactory createModelJAXBContextFactory() { |
| // must use classloader of the namespace handler |
| return new BlueprintModelJAXBContextFactory(CamelNamespaceHandler.class.getClassLoader()); |
| } |
| |
| public BundleContext getBundleContext() { |
| return bundleContext; |
| } |
| |
| public void setBundleContext(BundleContext bundleContext) { |
| this.bundleContext = bundleContext; |
| } |
| |
| public BlueprintContainer getBlueprintContainer() { |
| return blueprintContainer; |
| } |
| |
| public void setBlueprintContainer(BlueprintContainer blueprintContainer) { |
| this.blueprintContainer = blueprintContainer; |
| } |
| |
| public BlueprintCamelStateService getBundleStateService() { |
| return bundleStateService; |
| } |
| |
| public void setBundleStateService(BlueprintCamelStateService bundleStateService) { |
| this.bundleStateService = bundleStateService; |
| } |
| |
| @Override |
| public void doInit() throws Exception { |
| log.trace("init {}", this); |
| // add service listener so we can be notified when blueprint container is done |
| // and we would be ready to start CamelContext |
| bundleContext.addServiceListener(this); |
| // add blueprint listener as service, as we need this for the blueprint container |
| // to support change events when it changes states |
| registration = bundleContext.registerService(BlueprintListener.class, this, null); |
| // call super |
| super.doInit(); |
| } |
| |
| public void destroy() throws Exception { |
| log.trace("destroy {}", this); |
| |
| // remove listener and stop this CamelContext |
| try { |
| bundleContext.removeServiceListener(this); |
| } catch (Exception e) { |
| log.warn("Error removing ServiceListener: " + this + ". This exception is ignored.", e); |
| } |
| if (registration != null) { |
| try { |
| registration.unregister(); |
| } catch (Exception e) { |
| log.warn("Error unregistering service registration: " + registration + ". This exception is ignored.", e); |
| } |
| registration = null; |
| } |
| bundleStateService.setBundleState(bundleContext.getBundle(), this.getName(), null); |
| |
| // must stop Camel |
| stop(); |
| } |
| |
| @Override |
| public void blueprintEvent(BlueprintEvent event) { |
| if (log.isDebugEnabled()) { |
| String eventTypeString; |
| |
| switch (event.getType()) { |
| case BlueprintEvent.CREATING: |
| eventTypeString = "CREATING"; |
| break; |
| case BlueprintEvent.CREATED: |
| eventTypeString = "CREATED"; |
| break; |
| case BlueprintEvent.DESTROYING: |
| eventTypeString = "DESTROYING"; |
| break; |
| case BlueprintEvent.DESTROYED: |
| eventTypeString = "DESTROYED"; |
| break; |
| case BlueprintEvent.GRACE_PERIOD: |
| eventTypeString = "GRACE_PERIOD"; |
| break; |
| case BlueprintEvent.WAITING: |
| eventTypeString = "WAITING"; |
| break; |
| case BlueprintEvent.FAILURE: |
| eventTypeString = "FAILURE"; |
| break; |
| default: |
| eventTypeString = "UNKNOWN"; |
| break; |
| } |
| |
| log.debug("Received BlueprintEvent[replay={} type={} bundle={}] %s", event.isReplay(), eventTypeString, event.getBundle().getSymbolicName(), event); |
| } |
| |
| if (!event.isReplay() && this.getBundleContext().getBundle().getBundleId() == event.getBundle().getBundleId()) { |
| if (event.getType() == BlueprintEvent.CREATED) { |
| try { |
| log.info("Attempting to start CamelContext: {}", this.getName()); |
| this.maybeStart(); |
| } catch (Exception startEx) { |
| log.error("Error occurred during starting CamelContext: {}", this.getName(), startEx); |
| } |
| } else if (event.getType() == BlueprintEvent.DESTROYING) { |
| try { |
| log.info("Stopping CamelContext: {}", this.getName()); |
| this.stop(); |
| } catch (Exception stopEx) { |
| log.error("Error occurred during stopping CamelContext: {}", this.getName(), stopEx); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void serviceChanged(ServiceEvent event) { |
| if (log.isTraceEnabled()) { |
| String eventTypeString; |
| |
| switch (event.getType()) { |
| case ServiceEvent.REGISTERED: |
| eventTypeString = "REGISTERED"; |
| break; |
| case ServiceEvent.MODIFIED: |
| eventTypeString = "MODIFIED"; |
| break; |
| case ServiceEvent.UNREGISTERING: |
| eventTypeString = "UNREGISTERING"; |
| break; |
| case ServiceEvent.MODIFIED_ENDMATCH: |
| eventTypeString = "MODIFIED_ENDMATCH"; |
| break; |
| default: |
| eventTypeString = "UNKNOWN"; |
| break; |
| } |
| |
| // use trace logging as this is very noisy |
| log.trace("Service: {} changed to: {}", event, eventTypeString); |
| } |
| } |
| |
| @Override |
| protected TypeConverter createTypeConverter() { |
| // CAMEL-3614: make sure we use a bundle context which imports org.apache.camel.impl.converter package |
| BundleContext ctx = BundleContextUtils.getBundleContext(getClass()); |
| if (ctx == null) { |
| ctx = bundleContext; |
| } |
| FactoryFinder finder = new OsgiFactoryFinderResolver(bundleContext).resolveDefaultFactoryFinder(getClassResolver()); |
| return new OsgiTypeConverter(ctx, this, getInjector(), finder); |
| } |
| |
| @Override |
| public void start() { |
| final ClassLoader original = Thread.currentThread().getContextClassLoader(); |
| try { |
| // let's set a more suitable TCCL while starting the context |
| Thread.currentThread().setContextClassLoader(getApplicationContextClassLoader()); |
| bundleStateService.setBundleState(bundleContext.getBundle(), this.getName(), BlueprintCamelStateService.State.Starting); |
| super.start(); |
| bundleStateService.setBundleState(bundleContext.getBundle(), this.getName(), BlueprintCamelStateService.State.Active); |
| } catch (Exception e) { |
| bundleStateService.setBundleState(bundleContext.getBundle(), this.getName(), BlueprintCamelStateService.State.Failure, e); |
| routeDefinitionValid.set(false); |
| throw e; |
| } finally { |
| Thread.currentThread().setContextClassLoader(original); |
| } |
| } |
| |
| private void maybeStart() throws Exception { |
| log.trace("maybeStart: {}", this); |
| |
| if (!routeDefinitionValid.get()) { |
| log.trace("maybeStart: {} is skipping since CamelRoute definition is not correct.", this); |
| return; |
| } |
| |
| // allow to register the BluerintCamelContext eager in the OSGi Service Registry, which ex is needed |
| // for unit testing with camel-test-blueprint |
| boolean eager = "true".equalsIgnoreCase(System.getProperty("registerBlueprintCamelContextEager")); |
| if (eager) { |
| for (EventNotifier notifier : getManagementStrategy().getEventNotifiers()) { |
| if (notifier instanceof OsgiCamelContextPublisher) { |
| OsgiCamelContextPublisher publisher = (OsgiCamelContextPublisher) notifier; |
| publisher.registerCamelContext(this); |
| break; |
| } |
| } |
| } |
| |
| // for example from unit testing we want to start Camel later and not |
| // when blueprint loading the bundle |
| boolean skip = "true".equalsIgnoreCase(System.getProperty("skipStartingCamelContext")); |
| if (skip) { |
| log.trace("maybeStart: {} is skipping as System property skipStartingCamelContext is set", this); |
| return; |
| } |
| |
| if (!isStarted() && !isStarting()) { |
| log.debug("Starting {}", this); |
| start(); |
| } else { |
| // ignore as Camel is already started |
| log.trace("Ignoring maybeStart() as {} is already started", this); |
| } |
| } |
| |
| } |