001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.camel.blueprint; 018 019 import org.apache.camel.CamelContext; 020 import org.apache.camel.Component; 021 import org.apache.camel.core.osgi.OsgiComponentResolver; 022 import org.apache.camel.spi.ComponentResolver; 023 import org.apache.camel.util.CamelContextHelper; 024 import org.osgi.framework.BundleContext; 025 import org.slf4j.Logger; 026 import org.slf4j.LoggerFactory; 027 028 public class BlueprintComponentResolver extends OsgiComponentResolver { 029 030 private static final transient Logger LOG = LoggerFactory.getLogger(BlueprintComponentResolver.class); 031 032 public BlueprintComponentResolver(BundleContext bundleContext) { 033 super(bundleContext); 034 } 035 036 @Override 037 public Component resolveComponent(String name, CamelContext context) throws Exception { 038 try { 039 Object bean = context.getRegistry().lookup(name); 040 if (bean instanceof Component) { 041 LOG.debug("Found component: {} in registry: {}", name, bean); 042 return (Component) bean; 043 } else { 044 // let's use Camel's type conversion mechanism to convert things like CamelContext 045 // and other types into a valid Component 046 Component component = CamelContextHelper.convertTo(context, Component.class, bean); 047 if (component != null) { 048 return component; 049 } 050 } 051 } catch (Exception e) { 052 LOG.debug("Ignored error looking up bean: " + name + ". Error: " + e); 053 } 054 try { 055 Object bean = context.getRegistry().lookup(".camelBlueprint.componentResolver." + name); 056 if (bean instanceof ComponentResolver) { 057 LOG.debug("Found component resolver: {} in registry: {}", name, bean); 058 return ((ComponentResolver) bean).resolveComponent(name, context); 059 } 060 } catch (Exception e) { 061 LOG.debug("Ignored error looking up bean: " + name + ". Error: " + e); 062 } 063 return getComponent(name, context); 064 } 065 066 }