runtime/org.argeo.slc.support.ws.client/src/main/java/org/argeo/slc/ws/client/ValidatingClientInterceptor.java

   1 /*
   2  * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.argeo.slc.ws.client;
  18
  19 import java.io.IOException;
  20
  21 import javax.xml.transform.Source;
  22
  23 import org.springframework.ws.client.WebServiceClientException;
  24 import org.springframework.ws.client.WebServiceIOException;
  25 import org.springframework.ws.client.support.interceptor.ClientInterceptor;
  26 import org.springframework.ws.context.MessageContext;
  27 import org.springframework.xml.validation.XmlValidator;
  28 import org.xml.sax.SAXParseException;
  29
  30 import org.apache.commons.logging.Log;
  31 import org.apache.commons.logging.LogFactory;
  32
  33 public class ValidatingClientInterceptor implements ClientInterceptor {
  34         private final static Log log = LogFactory
  35                         .getLog(ValidatingClientInterceptor.class);
  36
  37         private Boolean validateRequest = true;
  38         private Boolean validateResponse = false;
  39         private XmlValidator validator = null;
  40
  41         public boolean handleFault(MessageContext messageContext)
  42                         throws WebServiceClientException {
  43                 return true;
  44         }
  45
  46         public boolean handleRequest(MessageContext messageContext)
  47                         throws WebServiceClientException {
  48                 if (validateRequest) {
  49                         if (messageContext.getRequest() == null)
  50                                 return true;
  51
  52                         Source source = messageContext.getRequest().getPayloadSource();
  53                         try {
  54                                 return validate(source);
  55                         } catch (IOException e) {
  56                                 throw new WebServiceIOException("Cannot validate request", e);
  57                         }
  58                 } else {
  59                         return true;
  60                 }
  61         }
  62
  63         public boolean handleResponse(MessageContext messageContext)
  64                         throws WebServiceClientException {
  65                 if (validateResponse) {
  66                         if (messageContext.getResponse() == null)
  67                                 return true;
  68
  69                         Source source = messageContext.getResponse().getPayloadSource();
  70                         try {
  71                                 return validate(source);
  72                         } catch (IOException e) {
  73                                 throw new WebServiceIOException("Cannot validate response", e);
  74                         }
  75                 } else {
  76                         return true;
  77                 }
  78         }
  79
  80         protected boolean validate(Source source) throws IOException {
  81                 SAXParseException[] exceptions = validator.validate(source);
  82                 if (exceptions.length != 0) {
  83                         for (SAXParseException ex : exceptions) {
  84                                 log.error(ex.getMessage());
  85                         }
  86                         return false;
  87                 } else {
  88                         return true;
  89                 }
  90         }
  91
  92         public void setValidateRequest(Boolean validateRequest) {
  93                 this.validateRequest = validateRequest;
  94         }
  95
  96         public void setValidateResponse(Boolean validateResponse) {
  97                 this.validateResponse = validateResponse;
  98         }
  99
 100         public void setValidator(XmlValidator validator) {
 101                 this.validator = validator;
 102         }
 103
 104 }