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/**
* 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.jaxws.interceptors;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ResourceBundle;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamWriter;
import javax.xml.ws.WebFault;
import org.apache.cxf.common.classloader.ClassLoaderUtils;
import org.apache.cxf.common.i18n.BundleUtils;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.common.util.StringUtils;
import org.apache.cxf.databinding.DataWriter;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.interceptor.FaultOutInterceptor;
import org.apache.cxf.message.FaultMode;
import org.apache.cxf.message.Message;
import org.apache.cxf.service.Service;
import org.apache.cxf.service.model.BindingOperationInfo;
import org.apache.cxf.service.model.FaultInfo;
import org.apache.cxf.service.model.MessagePartInfo;
import org.apache.cxf.service.model.OperationInfo;
import org.apache.cxf.staxutils.W3CDOMStreamWriter;
public class WebFaultOutInterceptor extends FaultOutInterceptor {
private static final Logger LOG = LogUtils.getL7dLogger(WebFaultOutInterceptor.class);
private static final ResourceBundle BUNDLE = BundleUtils.getBundle(WebFaultOutInterceptor.class);
public WebFaultOutInterceptor() {
super();
}
private QName getFaultName(WebFault wf, Class cls, OperationInfo op) {
String ns = wf.targetNamespace();
if (StringUtils.isEmpty(ns)) {
ns = op.getName().getNamespaceURI();
}
String name = wf.name();
if (StringUtils.isEmpty(name)) {
name = cls.getSimpleName();
}
return new QName(ns, name);
}
private WebFault getWebFaultAnnotation(Class t) {
WebFault fault = t.getAnnotation(WebFault.class);
if (fault == null
&& t.getSuperclass() != null
&& Throwable.class.isAssignableFrom(t.getSuperclass())) {
fault = getWebFaultAnnotation(t.getSuperclass());
}
return fault;
}
public void handleMessage(Message message) throws Fault {
Fault f = (Fault)message.getContent(Exception.class);
if (f == null) {
return;
}
Throwable cause = f.getCause();
WebFault fault = null;
if (cause != null) {
fault = getWebFaultAnnotation(cause.getClass());
}
if (cause instanceof Exception && fault != null) {
Exception ex = (Exception)cause;
Object faultInfo = null;
try {
Method method = cause.getClass().getMethod("getFaultInfo", new Class[0]);
faultInfo = method.invoke(cause, new Object[0]);
} catch (NoSuchMethodException e) {
faultInfo = createFaultInfoBean(fault, cause);
} catch (InvocationTargetException e) {
throw new Fault(new org.apache.cxf.common.i18n.Message("INVOCATION_TARGET_EXC", BUNDLE), e);
} catch (IllegalAccessException e) {
throw new Fault(new org.apache.cxf.common.i18n.Message("COULD_NOT_INVOKE", BUNDLE), e);
} catch (IllegalArgumentException e) {
throw new Fault(new org.apache.cxf.common.i18n.Message("COULD_NOT_INVOKE", BUNDLE), e);
}
Service service = message.getExchange().get(Service.class);
try {
DataWriter writer
= service.getDataBinding().createWriter(XMLStreamWriter.class);
OperationInfo op = message.getExchange().get(BindingOperationInfo.class).getOperationInfo();
QName faultName = getFaultName(fault, cause.getClass(), op);
MessagePartInfo part = getFaultMessagePart(faultName, op);
if (f.hasDetails()) {
writer.write(faultInfo, part, new W3CDOMStreamWriter(f.getDetail()));
} else {
writer.write(faultInfo, part, new W3CDOMStreamWriter(f.getOrCreateDetail()));
if (!f.getDetail().hasChildNodes()) {
f.setDetail(null);
}
}
f.setMessage(ex.getMessage());
} catch (Exception nex) {
//if exception occurs while writing a fault, we'll just let things continue
//and let the rest of the chain try handling it as is.
LOG.log(Level.WARNING, "EXCEPTION_WHILE_WRITING_FAULT", nex);
}
} else {
FaultMode mode = message.get(FaultMode.class);
if (mode == FaultMode.CHECKED_APPLICATION_FAULT) {
//only convert checked exceptions with this
//otherwise delegate down to the normal protocol specific stuff
super.handleMessage(message);
}
}
}
private Object createFaultInfoBean(WebFault fault, Throwable cause) {
if (!StringUtils.isEmpty(fault.faultBean())) {
try {
Class cls = ClassLoaderUtils.loadClass(fault.faultBean(),
cause.getClass());
if (cls != null) {
Object ret = cls.newInstance();
//copy props
Method meth[] = cause.getClass().getMethods();
for (Method m : meth) {
if (m.getParameterTypes().length == 0
&& (m.getName().startsWith("get")
|| m.getName().startsWith("is"))) {
try {
String name;
if (m.getName().startsWith("get")) {
name = "set" + m.getName().substring(3);
} else {
name = "set" + m.getName().substring(2);
}
Method m2 = cls.getMethod(name, m.getReturnType());
m2.invoke(ret, m.invoke(cause));
} catch (Exception e) {
//ignore
}
}
}
return ret;
}
} catch (ClassNotFoundException e1) {
//ignore
} catch (InstantiationException e) {
//ignore
} catch (IllegalAccessException e) {
//ignore
}
}
LOG.fine("Using @WebFault annotated class "
+ cause.getClass().getName()
+ " as faultInfo since getFaultInfo() was not found");
return cause;
}
private MessagePartInfo getFaultMessagePart(QName qname, OperationInfo op) {
for (FaultInfo faultInfo : op.getFaults()) {
for (MessagePartInfo mpi : faultInfo.getMessageParts()) {
String ns = null;
if (mpi.isElement()) {
ns = mpi.getElementQName().getNamespaceURI();
} else {
ns = mpi.getTypeQName().getNamespaceURI();
}
if (qname.getLocalPart().equals(mpi.getConcreteName().getLocalPart())
&& qname.getNamespaceURI().equals(ns)) {
return mpi;
}
}
}
return null;
}
}