/*
    * Copyright 2009 the original author or 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 org.openehealth.ipf.commons.ihe.ws.cxf.audit;
  
  import org.apache.cxf.binding.soap.SoapMessage;
  import org.apache.cxf.headers.Header;
  import org.apache.cxf.message.Message;
  import org.apache.cxf.phase.Phase;
  import org.apache.cxf.ws.addressing.AddressingProperties;
  import org.apache.cxf.ws.addressing.JAXWSAConstants;
  import org.apache.cxf.ws.addressing.Names;
  import org.openehealth.ipf.commons.audit.AuditContext;
  import org.openehealth.ipf.commons.ihe.core.atna.AuditStrategy;
  import org.openehealth.ipf.commons.ihe.ws.WsTransactionConfiguration;
  import org.openehealth.ipf.commons.ihe.ws.correlation.AsynchronyCorrelator;
  import org.openehealth.ipf.commons.ihe.ws.cxf.payload.OutPayloadExtractorInterceptor;
  import org.openehealth.ipf.commons.ihe.ws.cxf.payload.StringPayloadHolder;
  
  /**
   * CXF interceptor for ATNA auditing in WS-based IHE transactions with
   * WSA asynchrony support.  Handles <b>outgoing</b> requests
   * on <b>producer</b> side.
   *
   * @author Dmytro Rud
   */
  public class AuditOutRequestInterceptor<T extends WsAuditDataset> extends AbstractAuditInterceptor<T> {
      private final AsynchronyCorrelator<T> correlator;
      private final WsTransactionConfiguration<T> wsTransactionConfiguration;
  
      /**
       * Constructor.
       */
      public AuditOutRequestInterceptor(
              AuditStrategy<T> auditStrategy,
              AuditContext auditContext,
              AsynchronyCorrelator<T> correlator,
              WsTransactionConfiguration<T> wsTransactionConfiguration)
      {
          super(Phase.PRE_PROTOCOL_ENDING, auditStrategy, auditContext);
          addAfter(OutPayloadExtractorInterceptor.class.getName());
          this.correlator = correlator;
          this.wsTransactionConfiguration = wsTransactionConfiguration;
      }
  
      
      @Override
      protected void process(SoapMessage message) {
          if (isGET(message)) {
              return;
          }
  
          T auditDataset = getAuditDataset(message);
          auditDataset.setRemoteAddress((String) message.get(Message.ENDPOINT_ADDRESS));
          auditDataset.setDestinationUserId((String) message.get(Message.ENDPOINT_ADDRESS));
          extractXuaUserNameFromSaml2Assertion(message, Header.Direction.DIRECTION_OUT, auditDataset);
  
          Object request = extractPojo(message);
  
          // Get request payload, handle different variants thereby:
          //   a) for HL7v3-based transactions, payload corresponds to the "main" message;
          //   b) for ebXML-based transactions, rely on the {@link OutPayloadExtractorInterceptor}.
          if (wsTransactionConfiguration.isAuditRequestPayload()) {
              if (request instanceof String) {
                  auditDataset.setRequestPayload((String) request);
              } else {
                  auditDataset.setRequestPayload(message.getContent(StringPayloadHolder.class));
              }
          }
  
          getAuditStrategy().enrichAuditDatasetFromRequest(auditDataset, request, message);
  
          // when the invocation is asynchronous: store audit dataset into the correlator
          AddressingProperties props = (AddressingProperties) message.get(JAXWSAConstants.ADDRESSING_PROPERTIES_OUTBOUND);
          if (props != null && (Boolean.TRUE.equals(message.getContextualProperty(AsynchronyCorrelator.FORCE_CORRELATION)) ||
              ! Names.WSA_ANONYMOUS_ADDRESS.equals(props.getReplyTo().getAddress().getValue())))
          {
              correlator.storeAuditDataset(props.getMessageID().getValue(), auditDataset);
          }
      }
  
  }