org.apache.cxf.interceptor.FaultOutInterceptor Maven / Gradle / Ivy
/**
* 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.interceptor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.stream.XMLStreamWriter;
import org.w3c.dom.Node;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.databinding.DataBinding;
import org.apache.cxf.databinding.DataWriter;
import org.apache.cxf.message.Message;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
import org.apache.cxf.service.Service;
import org.apache.cxf.service.model.BindingFaultInfo;
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.staxutils.W3CDOMStreamWriter;
public class FaultOutInterceptor extends AbstractPhaseInterceptor {
private static final Logger LOG = LogUtils.getL7dLogger(FaultOutInterceptor.class);
/**
* Marker interfaces for Exceptions that have a
* getFaultInfo() method that returns some sort
* of object that the FaultOutInterceptor can
* marshal into a fault detail element
*/
public interface FaultInfoException {
}
public FaultOutInterceptor() {
super(Phase.PRE_PROTOCOL);
}
public void handleMessage(Message message) throws Fault {
Fault f = (Fault)message.getContent(Exception.class);
if (f == null) {
return;
}
Throwable cause = f.getCause();
if (cause == null) {
return;
}
BindingOperationInfo bop = message.getExchange().get(BindingOperationInfo.class);
if (bop == null) {
return;
}
FaultInfo fi = getFaultForClass(bop, cause.getClass());
if (cause instanceof Exception && fi != null) {
Exception ex = (Exception)cause;
Object bean = getFaultBean(cause, fi, message);
Service service = message.getExchange().get(Service.class);
MessagePartInfo part = fi.getMessageParts().iterator().next();
DataBinding db = service.getDataBinding();
try {
if (isDOMSupported(db)) {
DataWriter writer = db.createWriter(Node.class);
if (f.hasDetails()) {
writer.write(bean, part, f.getDetail());
} else {
writer.write(bean, part, f.getOrCreateDetail());
if (!f.getDetail().hasChildNodes()) {
f.setDetail(null);
}
}
} else {
if (f.hasDetails()) {
XMLStreamWriter xsw = new W3CDOMStreamWriter(f.getDetail());
DataWriter writer = db.createWriter(XMLStreamWriter.class);
writer.write(bean, part, xsw);
} else {
XMLStreamWriter xsw = new W3CDOMStreamWriter(f.getOrCreateDetail());
DataWriter writer = db.createWriter(XMLStreamWriter.class);
writer.write(bean, part, xsw);
if (!f.getDetail().hasChildNodes()) {
f.setDetail(null);
}
}
}
f.setMessage(ex.getMessage());
} catch (Exception fex) {
//ignore - if any exceptions occur here, we'll ignore them
//and let the default fault handling of the binding convert
//the fault like it was an unchecked exception.
LOG.log(Level.WARNING, "EXCEPTION_WHILE_WRITING_FAULT", fex);
}
}
}
private boolean isDOMSupported(DataBinding db) {
boolean supportsDOM = false;
for (Class c : db.getSupportedWriterFormats()) {
if (c.equals(Node.class)) {
supportsDOM = true;
}
}
return supportsDOM;
}
protected Object getFaultBean(Throwable cause, FaultInfo faultPart, Message message) {
if (cause instanceof FaultInfoException) {
try {
Method method = cause.getClass().getMethod("getFaultInfo", new Class[0]);
return method.invoke(cause, new Object[0]);
} catch (InvocationTargetException e) {
throw new Fault(new org.apache.cxf.common.i18n.Message("INVOKE_FAULT_INFO", LOG), e);
} catch (NoSuchMethodException e) {
throw new Fault(new org.apache.cxf.common.i18n.Message("NO_FAULT_INFO_METHOD", LOG), e);
} catch (Exception e) {
throw new Fault(new org.apache.cxf.common.i18n.Message("NO_ACCCESS_FAULT_INFO", LOG), e);
}
}
return cause;
}
/**
* Find the correct Fault part for a particular exception.
*
* @param op
* @param class1
*/
public FaultInfo getFaultForClass(BindingOperationInfo op, Class class1) {
FaultInfo selectedFaultInfo = null;
Class selectedFaultInfoClass = null;
for (BindingFaultInfo bfi : op.getFaults()) {
FaultInfo faultInfo = bfi.getFaultInfo();
Class c = (Class)faultInfo.getProperty(Class.class.getName());
if (c != null && c.isAssignableFrom(class1)
&& (selectedFaultInfo == null || selectedFaultInfoClass.isAssignableFrom(c))) {
selectedFaultInfo = faultInfo;
selectedFaultInfoClass = c;
}
}
return selectedFaultInfo;
}
}