| /** |
| * 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.NoSuchLanguageException; |
| import org.apache.camel.spi.Language; |
| import org.apache.camel.spi.LanguageResolver; |
| 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 OsgiLanguageResolver implements LanguageResolver { |
| private static final Logger LOG = LoggerFactory.getLogger(OsgiLanguageResolver.class); |
| |
| private final BundleContext bundleContext; |
| |
| public OsgiLanguageResolver(BundleContext bundleContext) { |
| this.bundleContext = bundleContext; |
| } |
| |
| public Language resolveLanguage(String name, CamelContext context) { |
| // lookup in registry first |
| Object bean = null; |
| try { |
| bean = context.getRegistry().lookupByName(name); |
| if (bean != null) { |
| LOG.debug("Found language: {} in registry: {}", name, bean); |
| } |
| } catch (Exception e) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Ignored error looking up bean: " + name + ". Error: " + e); |
| } |
| } |
| if (bean instanceof Language) { |
| return (Language)bean; |
| } |
| Language lang = getLanguage(name, context); |
| if (lang != null) { |
| return lang; |
| } |
| LanguageResolver resolver = getLanguageResolver("default", context); |
| if (resolver != null) { |
| return resolver.resolveLanguage(name, context); |
| } |
| throw new NoSuchLanguageException(name); |
| } |
| |
| protected Language getLanguage(String name, CamelContext context) { |
| LOG.trace("Finding Language: {}", name); |
| try { |
| ServiceReference<?>[] refs = bundleContext.getServiceReferences(LanguageResolver.class.getName(), "(language=" + name + ")"); |
| if (refs != null) { |
| for (ServiceReference<?> ref : refs) { |
| Object service = bundleContext.getService(ref); |
| if (LanguageResolver.class.isAssignableFrom(service.getClass())) { |
| LanguageResolver resolver = (LanguageResolver) service; |
| return resolver.resolveLanguage(name, context); |
| } |
| } |
| } |
| |
| return null; |
| } catch (InvalidSyntaxException e) { |
| throw ObjectHelper.wrapRuntimeCamelException(e); |
| } |
| } |
| |
| protected LanguageResolver getLanguageResolver(String name, CamelContext context) { |
| LOG.trace("Finding LanguageResolver: {}", name); |
| try { |
| ServiceReference<?>[] refs = bundleContext.getServiceReferences(LanguageResolver.class.getName(), "(resolver=" + name + ")"); |
| if (refs != null) { |
| for (ServiceReference<?> ref : refs) { |
| Object service = bundleContext.getService(ref); |
| if (LanguageResolver.class.isAssignableFrom(service.getClass())) { |
| LanguageResolver resolver = (LanguageResolver) service; |
| return resolver; |
| } |
| } |
| } |
| return null; |
| } catch (InvalidSyntaxException e) { |
| throw ObjectHelper.wrapRuntimeCamelException(e); |
| } |
| } |
| |
| } |