/** * 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.core.osgi; import org.apache.camel.CamelContext; import org.apache.camel.Component; import org.apache.camel.spi.ComponentResolver; import org.apache.camel.util.ObjectHelper; import org.apache.camel.util.ResolverHelper; import org.osgi.framework.BundleContext; import org.osgi.framework.InvalidSyntaxException; import org.osgi.framework.ServiceReference; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class OsgiComponentResolver implements ComponentResolver { private static final Logger LOG = LoggerFactory.getLogger(OsgiComponentResolver.class); private final BundleContext bundleContext; public OsgiComponentResolver(BundleContext bundleContext) { this.bundleContext = bundleContext; } public Component resolveComponent(String name, CamelContext context) throws Exception { Component componentReg = ResolverHelper.lookupComponentInRegistryWithFallback(context, name); if (componentReg != null) { return componentReg; } // Check in OSGi bundles return getComponent(name, context); } protected Component getComponent(String name, CamelContext context) throws Exception { LOG.trace("Finding Component: {}", name); try { ServiceReference<?>[] refs = bundleContext.getServiceReferences(ComponentResolver.class.getName(), "(component=" + name + ")"); if (refs != null) { for (ServiceReference<?> ref : refs) { Object service = bundleContext.getService(ref); if (ComponentResolver.class.isAssignableFrom(service.getClass())) { ComponentResolver resolver = (ComponentResolver) service; return resolver.resolveComponent(name, context); } } } return null; } catch (InvalidSyntaxException e) { throw ObjectHelper.wrapRuntimeCamelException(e); } } }