/**
* 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.cxf.dosgi.dsw.handlers;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.logging.Logger;
import org.apache.cxf.dosgi.dsw.OsgiUtils;
import org.apache.cxf.jaxrs.model.UserResource;
import org.apache.cxf.jaxrs.provider.AegisElementProvider;
import org.apache.cxf.jaxrs.utils.ResourceUtils;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.ServiceReference;
import org.osgi.service.discovery.ServiceEndpointDescription;
public class JaxRSUtils {
private static final Logger LOG = Logger.getLogger(JaxRSUtils.class.getName());
public final static String MODEL_FOLDER = "/OSGI-INF/cxf/jaxrs/";
public final static String DEFAULT_MODEL = "/OSGI-INF/cxf/jaxrs/model.xml";
public final static String PROVIDERS_FILTER =
"(|"
+ "(" + Constants.OBJECTCLASS + "=javax.ws.rs.ext.MessageBodyReader" + ")"
+ "(" + Constants.OBJECTCLASS + "=javax.ws.rs.ext.MessageBodyWriter" + ")"
+ "(" + Constants.OBJECTCLASS + "=javax.ws.rs.ext.ExceptionMapper" + ")"
+ "(" + Constants.OBJECTCLASS + "=org.apache.cxf.jaxrs.ext.RequestHandler" + ")"
+ "(" + Constants.OBJECTCLASS + "=org.apache.cxf.jaxrs.ext.ResponseHandler" + ")"
+ "(" + Constants.OBJECTCLASS + "=org.apache.cxf.jaxrs.ext.ParameterHandler" + ")"
+ ")";
public static List<Object> getProviders(BundleContext callingContext,
BundleContext dswBC,
ServiceEndpointDescription sd) {
List<Object> providers = new ArrayList<Object>();
if ("aegis".equals(sd.getProperty(org.apache.cxf.dosgi.dsw.Constants.RS_DATABINDING_PROP_KEY))) {
providers.add(new AegisElementProvider());
}
Object serviceProviders =
sd.getProperty(org.apache.cxf.dosgi.dsw.Constants.RS_PROVIDER_PROP_KEY);
if (serviceProviders != null) {
if (serviceProviders.getClass().isArray()) {
if (serviceProviders.getClass().getComponentType() == String.class) {
loadProviders(callingContext, providers, (String[])serviceProviders);
} else {
providers.addAll(Arrays.asList((Object[])serviceProviders));
}
} else {
String[] classNames = serviceProviders.toString().split(",");
loadProviders(callingContext, providers, classNames);
}
}
Object globalQueryProp =
sd.getProperty(org.apache.cxf.dosgi.dsw.Constants.RS_PROVIDER_GLOBAL_PROP_KEY);
boolean globalQueryRequired = globalQueryProp == null || OsgiUtils.toBoolean(globalQueryProp);
if (!globalQueryRequired) {
return providers;
}
boolean cxfProvidersOnly = OsgiUtils.getBooleanProperty(sd,
org.apache.cxf.dosgi.dsw.Constants.RS_PROVIDER_EXPECTED_PROP_KEY);
try {
ServiceReference[] refs = callingContext.getServiceReferences(null, PROVIDERS_FILTER);
if (refs != null) {
for (ServiceReference ref : refs) {
if (!cxfProvidersOnly || cxfProvidersOnly
&& OsgiUtils.toBoolean(
ref.getProperty(org.apache.cxf.dosgi.dsw.Constants.RS_PROVIDER_PROP_KEY))) {
providers.add(callingContext.getService(ref));
}
}
}
} catch (Exception ex) {
ex.printStackTrace();
LOG.fine("Problems finding JAXRS providers " + ex.getMessage());
}
return providers;
}
private static void loadProviders(BundleContext callingContext,
List<Object> providers,
String[] classNames) {
for (String className : classNames) {
try {
String realName = className.trim();
if (realName.length() > 0) {
Class<?> pClass = callingContext.getBundle().loadClass(realName);
providers.add(pClass.newInstance());
}
} catch (Exception ex) {
ex.printStackTrace();
LOG.warning("JAXRS Provider " + className.trim() + " can not be loaded or created");
}
}
}
public static List<UserResource> getModel(BundleContext callingContext, Class<?> iClass) {
String classModel = MODEL_FOLDER + iClass.getSimpleName() + "-model.xml";
List<UserResource> list = getModel(callingContext, iClass, classModel);
return list != null ? list : getModel(callingContext, iClass, DEFAULT_MODEL);
}
public static List<UserResource> getModel(BundleContext callingContext, Class<?> iClass, String name) {
InputStream r = iClass.getClassLoader().getResourceAsStream(name);
if (r == null) {
URL u = callingContext.getBundle().getResource(name);
if (u != null) {
try {
r = u.openStream();
} catch (Exception ex) {
LOG.info("Problems opening a user model resource at " + u.toString());
}
}
}
if (r != null) {
try {
return ResourceUtils.getUserResources(r);
} catch (Exception ex) {
LOG.info("Problems reading a user model, it will be ignored");
}
}
return null;
}
}