cdmlib-remote/src/main/java/eu/etaxonomy/cdm/remote/controller/MediaController.java

   1 /**
   2 * Copyright (C) 2007 EDIT
   3 * European Distributed Institute of Taxonomy
   4 * http://www.e-taxonomy.eu
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version 1.1
   7 * See LICENSE.TXT at the top of this package for the full license terms.
   8 */
   9
  10 package eu.etaxonomy.cdm.remote.controller;
  11
  12 import java.io.IOException;
  13 import eu.etaxonomy.cdm.common.URI;
  14 import java.util.Arrays;
  15 import java.util.List;
  16 import java.util.Map;
  17 import java.util.Set;
  18 import java.util.UUID;
  19
  20 import javax.servlet.http.HttpServletRequest;
  21 import javax.servlet.http.HttpServletResponse;
  22
  23 import org.apache.http.HttpException;
  24 import org.apache.log4j.Logger;
  25 //import org.mortbay.log.Log;
  26 import org.springframework.beans.factory.annotation.Autowired;
  27 import org.springframework.stereotype.Controller;
  28 import org.springframework.web.bind.annotation.PathVariable;
  29 import org.springframework.web.bind.annotation.RequestMapping;
  30 import org.springframework.web.bind.annotation.RequestMethod;
  31 import org.springframework.web.bind.annotation.RequestParam;
  32
  33 import eu.etaxonomy.cdm.api.service.IMediaService;
  34 import eu.etaxonomy.cdm.api.service.MediaServiceImpl;
  35 import eu.etaxonomy.cdm.common.media.CdmImageInfo;
  36 import eu.etaxonomy.cdm.model.media.Media;
  37 import eu.etaxonomy.cdm.model.media.MediaRepresentation;
  38 import eu.etaxonomy.cdm.remote.exception.NoRecordsMatchException;
  39 import io.swagger.annotations.Api;
  40
  41 /**
  42  * TODO write controller documentation
  43  *
  44  * @author a.kohlbecker
  45  * @since 24.03.2009
  46  */
  47
  48 @Controller
  49 @Api("media")
  50 @RequestMapping(value = {"/media/{uuid}"})
  51 public class MediaController extends AbstractIdentifiableController<Media, IMediaService>{
  52
  53     private static final Logger logger = Logger.getLogger(MediaController.class);
  54
  55     @Autowired
  56     @Override
  57     public void setService(IMediaService service) {
  58         this.service = service;
  59     }
  60     private static final List<String> MEDIA_INIT_STRATEGY = Arrays.asList(new String []{
  61             "*",
  62             "representations",
  63             "representations.parts"
  64     });
  65
  66     @RequestMapping(value = {"metadata"}, method = RequestMethod.GET)
  67     public Map<String, String> doGetMediaMetaData(
  68             @PathVariable("uuid") UUID uuid,
  69             @RequestParam(value = "applyFilterPreset", defaultValue = "true") Boolean applyFilterPreset,
  70             HttpServletRequest request,
  71             HttpServletResponse response) throws IOException {
  72
  73         Map<String, String> result;
  74         try{
  75             Media media = getCdmBaseInstance(uuid, response, MEDIA_INIT_STRATEGY);
  76
  77             Set<MediaRepresentation> representations = media.getRepresentations();
  78             if(media.getRepresentations().isEmpty()) {
  79                 return null;
  80             }
  81             MediaRepresentation mediaRepresentation = representations.iterator().next();
  82             URI uri = null;
  83             try {
  84                 if(applyFilterPreset) {
  85                         result = service.readResourceMetadataFiltered(mediaRepresentation);
  86
  87                 } else {
  88                     uri = mediaRepresentation.getParts().get(0).getUri();
  89                             CdmImageInfo cdmImageInfo = CdmImageInfo.NewInstanceWithMetaData(uri, MediaServiceImpl.IMAGE_READ_TIMEOUT);
  90                             result = cdmImageInfo.getMetaData();
  91                 }
  92             } catch (IOException | HttpException e) {
  93                 logger.info(e.getMessage());
  94                 if(uri != null) {
  95                     // may happen when applyFilterPreset == false
  96                     HttpStatusMessage.create("Reading media file from " + uri.toString() + " failed due to (" + e.getMessage() + ")", 400).send(response);
  97                 } else {
  98                     // may happen when applyFilterPreset == true
  99                     HttpStatusMessage.create("Reading media file failed due to (" + e.getMessage() + ")", 400).send(response);
 100                 }
 101                 return null;
 102             }
 103
 104         } catch (NoRecordsMatchException e){
 105            /* IGNORE */
 106            /* java.lang.IllegalStateException: STREAM is thrown by the servlet container
 107             * if the model and view is returned after the http error has been send
 108             * so we return null here
 109             */
 110             return null;
 111
 112         }
 113         return result;
 114
 115     }
 116
 117 }