| /** |
| * 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.CamelContextHelper; |
| import org.apache.camel.util.ObjectHelper; |
| 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 transient 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 { |
| Object bean = null; |
| try { |
| bean = context.getRegistry().lookup(name); |
| if (bean != null && LOG.isDebugEnabled()) { |
| LOG.debug("Found component: " + name + " in registry: " + bean); |
| } |
| } catch (Exception e) { |
| LOG.debug("Ignored error looking up bean: " + name + ". Error: " + e); |
| } |
| if (bean instanceof Component) { |
| return (Component)bean; |
| } else { |
| // lets use Camel's type conversion mechanism to convert things like CamelContext |
| // and other types into a valid Component |
| Component component = CamelContextHelper.convertTo(context, Component.class, bean); |
| if (component != null) { |
| return component; |
| } |
| } |
| |
| // Check in OSGi bundles |
| return getComponent(name, context); |
| } |
| |
| protected Component getComponent(String name, CamelContext context) throws Exception { |
| if (LOG.isTraceEnabled()) { |
| LOG.trace("Finding Component: " + name); |
| } |
| try { |
| ServiceReference[] refs = bundleContext.getServiceReferences(ComponentResolver.class.getName(), "(component=" + name + ")"); |
| if (refs != null && refs.length > 0) { |
| ComponentResolver resolver = (ComponentResolver) bundleContext.getService(refs[0]); |
| return resolver.resolveComponent(name, context); |
| } |
| return null; |
| } catch (InvalidSyntaxException e) { |
| throw ObjectHelper.wrapRuntimeCamelException(e); |
| } |
| } |
| |
| } |