| /* |
| * 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.aries.jax.rs.jaxb.json.activator; |
| |
| import org.apache.aries.component.dsl.OSGi; |
| import org.apache.aries.component.dsl.OSGiResult; |
| import org.apache.cxf.jaxrs.utils.schemas.SchemaHandler; |
| import org.codehaus.jettison.mapped.TypeConverter; |
| import org.osgi.framework.BundleActivator; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.Constants; |
| import org.osgi.service.jaxrs.whiteboard.JaxrsWhiteboardConstants; |
| |
| import javax.ws.rs.ext.MessageBodyReader; |
| import javax.ws.rs.ext.MessageBodyWriter; |
| import javax.xml.bind.Marshaller; |
| import javax.xml.bind.Unmarshaller; |
| import java.util.Dictionary; |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Optional; |
| |
| import static org.apache.aries.component.dsl.OSGi.all; |
| import static org.apache.aries.component.dsl.OSGi.coalesce; |
| import static org.apache.aries.component.dsl.OSGi.combine; |
| import static org.apache.aries.component.dsl.OSGi.configuration; |
| import static org.apache.aries.component.dsl.OSGi.configurations; |
| import static org.apache.aries.component.dsl.OSGi.just; |
| import static org.apache.aries.component.dsl.OSGi.register; |
| import static org.apache.aries.component.dsl.OSGi.service; |
| import static org.apache.aries.component.dsl.OSGi.serviceReferences; |
| import static org.apache.aries.component.dsl.Utils.highest; |
| |
| public class JaxbJsonBundleActivator implements BundleActivator { |
| |
| public static final String CONFIG_PID = "org.apache.aries.jax.rs.jaxb.json"; |
| |
| public static OSGi<Dictionary<String, ?>> CONFIGURATION = |
| all( |
| configurations(CONFIG_PID), |
| coalesce( |
| configuration(CONFIG_PID), |
| just(Hashtable::new)) |
| ).filter( |
| c -> !Objects.equals(c.get("enabled"), "false") |
| ); |
| |
| @Override |
| public void start(BundleContext context) throws Exception { |
| _result = |
| CONFIGURATION.flatMap(properties -> |
| createJsonFactory(properties).flatMap(jsonFactory -> |
| register( |
| new String[]{ |
| MessageBodyReader.class.getName(), |
| MessageBodyWriter.class.getName() |
| }, |
| () -> jsonFactory, |
| () -> getRegistrationProperties(properties) |
| ))). |
| run(context); |
| } |
| |
| @Override |
| public void stop(BundleContext context) throws Exception { |
| _result.close(); |
| } |
| private OSGiResult _result; |
| |
| private static OSGi<JsonProviderPrototypeServiceFactory> createJsonFactory( |
| Dictionary<String, ?> properties) { |
| |
| Object nameObject = properties.get("osgi.jaxrs.name"); |
| String name; |
| |
| if (nameObject == null) { |
| name = "jaxb-json"; |
| } |
| else { |
| name = nameObject.toString(); |
| } |
| |
| return combine( |
| JsonProviderPrototypeServiceFactory::new, |
| just(properties), |
| getStaticOptionalServices(name, TypeConverter.class), |
| getStaticOptionalServices(name, Marshaller.Listener.class), |
| getStaticOptionalServices(name, Unmarshaller.Listener.class), |
| getStaticOptionalServices(name, SchemaHandler.class) |
| ); |
| } |
| |
| private static <T> OSGi<Optional<T>> getStaticOptionalServices( |
| String name, Class<T> clazz) { |
| |
| return coalesce( |
| service( |
| highest( |
| serviceReferences( |
| clazz, "(osgi.jaxrs.name=" + name + ")"))). |
| map(Optional::of), |
| just(Optional.empty())); |
| } |
| |
| private Map<String, ?> getRegistrationProperties( |
| Dictionary<String, ?> properties) { |
| |
| @SuppressWarnings("serial") |
| Hashtable<String, Object> serviceProps = |
| new Hashtable<String, Object>() {{ |
| put(JaxrsWhiteboardConstants.JAX_RS_EXTENSION, true); |
| putIfAbsent( |
| JaxrsWhiteboardConstants.JAX_RS_NAME, "jaxb-json"); |
| put(Constants.SERVICE_RANKING, Integer.MIN_VALUE); |
| }}; |
| |
| Enumeration<String> keys = properties.keys(); |
| |
| while (keys.hasMoreElements()) { |
| String key = keys.nextElement(); |
| |
| serviceProps.put(key, properties.get(key)); |
| } |
| |
| return serviceProps; |
| } |
| |
| } |