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SOAPErrorDecoder.java
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80 lines (71 loc) · 2.64 KB
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/**
* Copyright 2012-2020 The Feign Authors
*
* Licensed 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 feign.soap;
import java.io.IOException;
import javax.xml.soap.MessageFactory;
import javax.xml.soap.SOAPConstants;
import javax.xml.soap.SOAPException;
import javax.xml.soap.SOAPFault;
import javax.xml.soap.SOAPMessage;
import javax.xml.ws.soap.SOAPFaultException;
import feign.Response;
import feign.codec.ErrorDecoder;
/**
* Wraps the returned {@link SOAPFault} if present into a {@link SOAPFaultException}. So you need to
* catch {@link SOAPFaultException} to retrieve the reason of the {@link SOAPFault}.
*
* <p>
* If no faults is returned then the default {@link ErrorDecoder} is used to return exception and
* eventually retry the call.
* </p>
*
*/
public class SOAPErrorDecoder implements ErrorDecoder {
private final String soapProtocol;
public SOAPErrorDecoder() {
this.soapProtocol = SOAPConstants.DEFAULT_SOAP_PROTOCOL;
}
/**
* SOAPErrorDecoder constructor allowing you to specify the SOAP protocol.
*
* @param soapProtocol a string constant representing the MessageFactory protocol.
*
* @see SOAPConstants#SOAP_1_1_PROTOCOL
* @see SOAPConstants#SOAP_1_2_PROTOCOL
* @see SOAPConstants#DYNAMIC_SOAP_PROTOCOL
* @see MessageFactory#newInstance(String)
*/
public SOAPErrorDecoder(String soapProtocol) {
this.soapProtocol = soapProtocol;
}
@Override
public Exception decode(String methodKey, Response response) {
if (response.body() == null || response.status() == 503)
return defaultErrorDecoder(methodKey, response);
SOAPMessage message;
try {
message = MessageFactory.newInstance(soapProtocol).createMessage(null,
response.body().asInputStream());
if (message.getSOAPBody() != null && message.getSOAPBody().hasFault()) {
return new SOAPFaultException(message.getSOAPBody().getFault());
}
} catch (SOAPException | IOException e) {
// ignored
}
return defaultErrorDecoder(methodKey, response);
}
private Exception defaultErrorDecoder(String methodKey, Response response) {
return new ErrorDecoder.Default().decode(methodKey, response);
}
}