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 package eu.etaxonomy.cdm.remote.controller;
  10
  11 import java.io.IOException;
  12 import java.util.Arrays;
  13 import java.util.List;
  14 import java.util.Map;
  15 import java.util.Set;
  16 import java.util.UUID;
  17
  18 import javax.servlet.http.HttpServletRequest;
  19 import javax.servlet.http.HttpServletResponse;
  20
  21 import org.apache.http.HttpException;
  22 import org.apache.logging.log4j.LogManager;
  23 import org.apache.logging.log4j.Logger;
  24 //import org.mortbay.log.Log;
  25 import org.springframework.beans.factory.annotation.Autowired;
  26 import org.springframework.stereotype.Controller;
  27 import org.springframework.web.bind.annotation.PathVariable;
  28 import org.springframework.web.bind.annotation.RequestMapping;
  29 import org.springframework.web.bind.annotation.RequestMethod;
  30 import org.springframework.web.bind.annotation.RequestParam;
  31 import org.springframework.web.bind.annotation.ResponseBody;
  32
  33 import eu.etaxonomy.cdm.api.service.IMediaService;
  34 import eu.etaxonomy.cdm.api.service.media.MediaInfoFactory;
  35 import eu.etaxonomy.cdm.common.URI;
  36 import eu.etaxonomy.cdm.common.media.CdmImageInfo;
  37 import eu.etaxonomy.cdm.model.media.Media;
  38 import eu.etaxonomy.cdm.model.media.MediaRepresentation;
  39 import eu.etaxonomy.cdm.remote.exception.NoRecordsMatchException;
  40 import io.swagger.annotations.Api;
  41
  42 /**
  43  * TODO write controller documentation
  44  *
  45  * @author a.kohlbecker
  46  * @since 24.03.2009
  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 = LogManager.getLogger();
  54
  55     @Autowired
  56     private MediaInfoFactory mediaInfoFactory;
  57
  58     @Autowired
  59     @Override
  60     public void setService(IMediaService service) {
  61         this.service = service;
  62     }
  63     private static final List<String> MEDIA_INIT_STRATEGY = Arrays.asList(new String []{
  64             "*",
  65             "representations",
  66             "representations.parts"
  67     });
  68
  69
  70     @RequestMapping(value = {"metadata"}, method = RequestMethod.GET)
  71     @ResponseBody // = is REST service method with json response
  72     public Map<String, String> doGetMediaMetaData(
  73             @PathVariable("uuid") UUID uuid,
  74             @RequestParam(value = "applyFilterPreset", defaultValue = "true") Boolean applyFilterPreset,
  75             HttpServletRequest request,
  76             HttpServletResponse response) throws IOException {
  77
  78         Map<String, String> result;
  79         try{
  80             Media media = getCdmBaseInstance(uuid, response, MEDIA_INIT_STRATEGY);
  81
  82             Set<MediaRepresentation> representations = media.getRepresentations();
  83             if(media.getRepresentations().isEmpty()) {
  84                 return null;
  85             }
  86             MediaRepresentation mediaRepresentation = representations.iterator().next();
  87             URI uri = null;
  88             try {
  89                 if(applyFilterPreset) {
  90                    result = service.readResourceMetadataFiltered(mediaRepresentation);
  91                 } else {
  92                     uri = mediaRepresentation.getParts().get(0).getUri();
  93                     CdmImageInfo cdmImageInfo = mediaInfoFactory.cdmImageInfo(uri, true);
  94                     result = cdmImageInfo.getMetaData();
  95                 }
  96             } catch (IOException | HttpException e) {
  97                 logger.info(e.getMessage());
  98                 if(uri != null) {
  99                     // may happen when applyFilterPreset == false
 100                     HttpStatusMessage.create("Reading media file from " + uri.toString() + " failed due to (" + e.getMessage() + ")", 400).send(response);
 101                 } else {
 102                     // may happen when applyFilterPreset == true
 103                     HttpStatusMessage.create("Reading media file failed due to (" + e.getMessage() + ")", 400).send(response);
 104                 }
 105                 return null;
 106             }
 107
 108         } catch (NoRecordsMatchException e){
 109            /* IGNORE */
 110            /* java.lang.IllegalStateException: STREAM is thrown by the servlet container
 111             * if the model and view is returned after the http error has been send
 112             * so we return null here
 113             */
 114             return null;
 115
 116         }
 117         return result;
 118
 119     }
 120
 121 }