GetSlcExecution.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.web.mvc.process;
  18
  19 import java.io.ByteArrayInputStream;
  20 import java.io.ByteArrayOutputStream;
  21
  22 import javax.servlet.http.HttpServletRequest;
  23 import javax.servlet.http.HttpServletResponse;
  24 import javax.xml.transform.stream.StreamSource;
  25
  26 import org.apache.commons.io.IOUtils;
  27 import org.apache.commons.logging.Log;
  28 import org.apache.commons.logging.LogFactory;
  29 import org.argeo.slc.core.attachment.Attachment;
  30 import org.argeo.slc.core.attachment.AttachmentsStorage;
  31 import org.argeo.slc.dao.process.SlcExecutionDao;
  32 import org.argeo.slc.msg.ObjectList;
  33 import org.argeo.slc.process.SlcExecution;
  34 import org.argeo.slc.web.mvc.AbstractServiceController;
  35 import org.springframework.oxm.Unmarshaller;
  36 import org.springframework.web.servlet.ModelAndView;
  37
  38 /** Lists SLC executions possibly filtering them. */
  39 public class GetSlcExecution extends AbstractServiceController {
  40         private final static Log log = LogFactory.getLog(GetSlcExecution.class);
  41
  42         private SlcExecutionDao slcExecutionDao;
  43         private Unmarshaller unmarshaller;
  44
  45         private AttachmentsStorage attachmentsStorage;
  46
  47         @Override
  48         protected void handleServiceRequest(HttpServletRequest request,
  49                         HttpServletResponse response, ModelAndView modelAndView)
  50                         throws Exception {
  51                 String uuid = request.getParameter("uuid");
  52                 SlcExecution slcExecution = slcExecutionDao.getSlcExecution(uuid);
  53
  54                 // StringSource source = new StringSource(slcExecution
  55                 // .getRealizedFlowsXml());
  56                 // ObjectList ol2 = (ObjectList) unmarshaller.unmarshal(source);
  57                 // ol2.fill(slcExecution.getRealizedFlows());
  58                 retrieveRealizedFlows(slcExecution);
  59
  60                 modelAndView.addObject(slcExecution);
  61         }
  62
  63         protected void retrieveRealizedFlows(SlcExecution slcExecution) {
  64                 Attachment attachment = NewSlcExecutionController
  65                                 .realizedFlowsAttachment(slcExecution.getRealizedFlowsXml(),
  66                                                 slcExecution);
  67
  68                 ByteArrayOutputStream out = null;
  69                 ByteArrayInputStream in = null;
  70                 try {
  71                         // TODO: optimize with piped streams
  72                         out = new ByteArrayOutputStream();
  73                         attachmentsStorage.retrieveAttachment(attachment, out);
  74
  75                         byte[] arr = out.toByteArray();
  76                         in = new ByteArrayInputStream(arr);
  77                         StreamSource source = new StreamSource(in);
  78                         ObjectList ol = (ObjectList) unmarshaller.unmarshal(source);
  79                         ol.fill(slcExecution.getRealizedFlows());
  80                 } catch (Exception e) {
  81                         log.error("Could not retrieve realized flows from attachment #"
  82                                         + attachment.getUuid(), e);
  83                 } finally {
  84                         IOUtils.closeQuietly(in);
  85                         IOUtils.closeQuietly(out);
  86                 }
  87         }
  88
  89         public void setSlcExecutionDao(SlcExecutionDao slcExecutionDao) {
  90                 this.slcExecutionDao = slcExecutionDao;
  91         }
  92
  93         public void setUnmarshaller(Unmarshaller unmarshaller) {
  94                 this.unmarshaller = unmarshaller;
  95         }
  96
  97         public void setAttachmentsStorage(AttachmentsStorage attachmentsStorage) {
  98                 this.attachmentsStorage = attachmentsStorage;
  99         }
 100
 101 }