/**
* 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.osgi;
import java.util.List;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.impl.converter.AnnotationTypeConverterLoader;
import org.apache.camel.impl.converter.DefaultTypeConverter;
import org.apache.camel.impl.converter.TypeConverterLoader;
import org.apache.camel.util.ObjectHelper;
import org.apache.camel.util.ResolverUtil;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.osgi.framework.BundleContext;
import org.springframework.osgi.context.BundleContextAware;
/**
* This factory just create a DefaultContext in OSGi without
* any spring application context involved.
*/
public class CamelContextFactory implements BundleContextAware {
protected static final transient Log LOG = LogFactory.getLog(CamelContextFactory.class);
private BundleContext bundleContext;
public BundleContext getBundleContext() {
return bundleContext;
}
public void setBundleContext(BundleContext bundleContext) {
if (LOG.isDebugEnabled()) {
LOG.debug("Using BundleContext: " + bundleContext);
}
this.bundleContext = bundleContext;
}
public DefaultCamelContext createContext() {
LOG.debug("Creating DefaultCamelContext");
DefaultCamelContext context = new DefaultCamelContext();
if (bundleContext != null) {
if (LOG.isDebugEnabled()) {
LOG.debug("Using OSGI resolvers");
}
updateRegistry(context);
LOG.debug("Using OsgiFactoryFinder");
context.setFactoryFinderClass(OsgiFactoryFinder.class);
LOG.debug("Using OsgiComponentResolver");
context.setComponentResolver(new OsgiComponentResolver());
LOG.debug("Using OsgiLanguageResolver");
context.setLanguageResolver(new OsgiLanguageResolver());
addOsgiAnnotationTypeConverterLoader(context, bundleContext);
} else {
// TODO: should we not thrown an excpetion to not allow it to startup
LOG.warn("BundleContext not set, cannot run in OSGI container");
}
return context;
}
protected void updateRegistry(DefaultCamelContext context) {
ObjectHelper.notNull(bundleContext, "BundleContext");
LOG.debug("Setting the OSGi ServiceRegistry");
OsgiServiceRegistry osgiServiceRegistry = new OsgiServiceRegistry(bundleContext);
CompositeRegistry compositeRegistry = new CompositeRegistry();
compositeRegistry.addRegistry(osgiServiceRegistry);
compositeRegistry.addRegistry(context.getRegistry());
context.setRegistry(compositeRegistry);
}
/**
* The factory method for create the ResolverUtil
* @return a new instance of ResolverUtil
*/
protected ResolverUtil createResolverUtil() {
if (bundleContext != null) {
return new OsgiResolverUtil(bundleContext);
} else {
return new ResolverUtil();
}
}
protected void addOsgiAnnotationTypeConverterLoader(DefaultCamelContext context, BundleContext bundleContext) {
LOG.debug("Using OsgiAnnotationTypeConverterLoader");
DefaultTypeConverter typeConverter = (DefaultTypeConverter) context.getTypeConverter();
List<TypeConverterLoader> typeConverterLoaders = typeConverter.getTypeConverterLoaders();
// Remove the AnnotationTypeConverterLoader
TypeConverterLoader atLoader = null;
for (TypeConverterLoader loader : typeConverterLoaders) {
if (loader instanceof AnnotationTypeConverterLoader) {
atLoader = loader;
break;
}
}
if (atLoader != null) {
typeConverterLoaders.remove(atLoader);
}
typeConverterLoaders.add(new OsgiAnnotationTypeConverterLoader(bundleContext));
}
}