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.CompositeRegistry;
021    import org.apache.camel.core.osgi.OsgiCamelContextHelper;
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.OsgiServiceRegistry;
026    import org.apache.camel.core.osgi.OsgiTypeConverter;
027    import org.apache.camel.impl.DefaultCamelContext;
028    import org.apache.camel.spi.Registry;
029    import org.apache.commons.logging.Log;
030    import org.apache.commons.logging.LogFactory;
031    import org.osgi.framework.BundleContext;
032    import org.osgi.service.blueprint.container.BlueprintContainer;
033    
034    public class BlueprintCamelContext extends DefaultCamelContext {
035    
036        private static final transient Log LOG = LogFactory.getLog(BlueprintCamelContext.class);
037    
038        private BundleContext bundleContext;
039        private BlueprintContainer blueprintContainer;
040    
041        public BlueprintCamelContext() {
042        }
043    
044        public BlueprintCamelContext(BundleContext bundleContext, BlueprintContainer blueprintContainer) {
045            this.bundleContext = bundleContext;
046            this.blueprintContainer = blueprintContainer;
047            setClassResolver(new OsgiClassResolver(bundleContext));
048            setFactoryFinderResolver(new OsgiFactoryFinderResolver(bundleContext));
049            setPackageScanClassResolver(new OsgiPackageScanClassResolver(bundleContext));
050            setComponentResolver(new BlueprintComponentResolver(bundleContext));
051            setLanguageResolver(new BlueprintLanguageResolver(bundleContext));
052            setDataFormatResolver(new BlueprintDataFormatResolver(bundleContext));
053        }
054    
055        public BundleContext getBundleContext() {
056            return bundleContext;
057        }
058    
059        public void setBundleContext(BundleContext bundleContext) {
060            this.bundleContext = bundleContext;
061        }
062    
063        public BlueprintContainer getBlueprintContainer() {
064            return blueprintContainer;
065        }
066    
067        public void setBlueprintContainer(BlueprintContainer blueprintContainer) {
068            this.blueprintContainer = blueprintContainer;
069        }
070    
071        public void init() throws Exception {
072            maybeStart();
073        }
074    
075        private void maybeStart() throws Exception {
076            if (!isStarted() && !isStarting()) {
077                // Make sure we will not get into the endless loop of calling star
078                LOG.info("Starting Apache Camel as property ShouldStartContext is true");
079                start();
080            } else {
081                // ignore as Camel is already started
082                LOG.trace("Ignoring maybeStart() as Apache Camel is already started");
083            }
084        }
085    
086        public void destroy() throws Exception {
087            stop();
088        }
089    
090        @Override
091        protected TypeConverter createTypeConverter() {
092            return new OsgiTypeConverter(bundleContext, getInjector());
093        }
094    
095        @Override
096        protected Registry createRegistry() {
097            Registry reg = new BlueprintContainerRegistry(getBlueprintContainer());
098            return OsgiCamelContextHelper.wrapRegistry(this, reg, bundleContext);
099        }
100    
101    }