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.TypeConverter;
020 import org.apache.camel.core.osgi.OsgiCamelContextHelper;
021 import org.apache.camel.core.osgi.OsgiCamelContextNameStrategy;
022 import org.apache.camel.core.osgi.OsgiClassResolver;
023 import org.apache.camel.core.osgi.OsgiFactoryFinderResolver;
024 import org.apache.camel.core.osgi.OsgiPackageScanClassResolver;
025 import org.apache.camel.core.osgi.OsgiTypeConverter;
026 import org.apache.camel.core.osgi.utils.BundleContextUtils;
027 import org.apache.camel.core.osgi.utils.BundleDelegatingClassLoader;
028 import org.apache.camel.impl.DefaultCamelContext;
029 import org.apache.camel.spi.FactoryFinder;
030 import org.apache.camel.spi.Registry;
031 import org.osgi.framework.BundleContext;
032 import org.osgi.service.blueprint.container.BlueprintContainer;
033 import org.slf4j.Logger;
034 import org.slf4j.LoggerFactory;
035
036 public class BlueprintCamelContext extends DefaultCamelContext {
037
038 private static final transient Logger LOG = LoggerFactory.getLogger(BlueprintCamelContext.class);
039
040 private BundleContext bundleContext;
041 private BlueprintContainer blueprintContainer;
042
043 public BlueprintCamelContext() {
044 }
045
046 public BlueprintCamelContext(BundleContext bundleContext, BlueprintContainer blueprintContainer) {
047 this.bundleContext = bundleContext;
048 this.blueprintContainer = blueprintContainer;
049 setNameStrategy(new OsgiCamelContextNameStrategy(bundleContext));
050 setClassResolver(new OsgiClassResolver(bundleContext));
051 setFactoryFinderResolver(new OsgiFactoryFinderResolver(bundleContext));
052 setPackageScanClassResolver(new OsgiPackageScanClassResolver(bundleContext));
053 setComponentResolver(new BlueprintComponentResolver(bundleContext));
054 setLanguageResolver(new BlueprintLanguageResolver(bundleContext));
055 setDataFormatResolver(new BlueprintDataFormatResolver(bundleContext));
056 setApplicationContextClassLoader(new BundleDelegatingClassLoader(bundleContext.getBundle()));
057 }
058
059 public BundleContext getBundleContext() {
060 return bundleContext;
061 }
062
063 public void setBundleContext(BundleContext bundleContext) {
064 this.bundleContext = bundleContext;
065 }
066
067 public BlueprintContainer getBlueprintContainer() {
068 return blueprintContainer;
069 }
070
071 public void setBlueprintContainer(BlueprintContainer blueprintContainer) {
072 this.blueprintContainer = blueprintContainer;
073 }
074
075 public void init() throws Exception {
076 final ClassLoader original = Thread.currentThread().getContextClassLoader();
077 try {
078 // let's set a more suitable TCCL while starting the context
079 Thread.currentThread().setContextClassLoader(getApplicationContextClassLoader());
080 maybeStart();
081 } finally {
082 Thread.currentThread().setContextClassLoader(original);
083 }
084 }
085
086 private void maybeStart() throws Exception {
087 if (!isStarted() && !isStarting()) {
088 start();
089 } else {
090 // ignore as Camel is already started
091 LOG.trace("Ignoring maybeStart() as Apache Camel is already started");
092 }
093 }
094
095 public void destroy() throws Exception {
096 stop();
097 }
098
099 @Override
100 protected TypeConverter createTypeConverter() {
101 // CAMEL-3614: make sure we use a bundle context which imports org.apache.camel.impl.converter package
102 BundleContext ctx = BundleContextUtils.getBundleContext(getClass());
103 if (ctx == null) {
104 ctx = bundleContext;
105 }
106 FactoryFinder finder = new OsgiFactoryFinderResolver(bundleContext).resolveDefaultFactoryFinder(getClassResolver());
107 return new OsgiTypeConverter(ctx, getInjector(), finder);
108 }
109
110 @Override
111 protected Registry createRegistry() {
112 Registry reg = new BlueprintContainerRegistry(getBlueprintContainer());
113 return OsgiCamelContextHelper.wrapRegistry(this, reg, bundleContext);
114 }
115
116 }