git.aero2k.de Git - tmp/jakarta-migration.git/blob

   1 package org.collectionspace.services.common.imaging.nuxeo;
   2
   3 import java.io.File;
   4 import java.io.Serializable;
   5 import java.util.Map;
   6
   7 import org.apache.commons.logging.Log;
   8 import org.apache.commons.logging.LogFactory;
   9 import org.nuxeo.ecm.core.api.Blob;
  10 import org.nuxeo.ecm.core.api.blobholder.BlobHolder;
  11 import org.nuxeo.ecm.core.api.impl.blob.FileBlob;
  12 import org.nuxeo.ecm.core.convert.api.ConversionException;
  13 import org.nuxeo.ecm.core.convert.cache.SimpleCachableBlobHolder;
  14 import org.nuxeo.ecm.core.convert.extension.Converter;
  15 import org.nuxeo.ecm.core.convert.extension.ConverterDescriptor;
  16 import org.nuxeo.ecm.core.storage.sql.coremodel.SQLBlob;
  17 import org.nuxeo.ecm.platform.commandline.executor.api.CmdParameters;
  18 import org.nuxeo.ecm.platform.commandline.executor.api.CommandAvailability;
  19 import org.nuxeo.ecm.platform.commandline.executor.api.CommandLineExecutorService;
  20 import org.nuxeo.ecm.platform.commandline.executor.api.ExecResult;
  21 import org.nuxeo.ecm.platform.picture.core.im.IMImageUtils;
  22 import org.nuxeo.runtime.api.Framework;
  23 import org.nuxeo.runtime.services.streaming.FileSource;
  24 import org.nuxeo.runtime.services.streaming.StreamSource;
  25
  26 public class ThumbnailConverter extends IMImageUtils implements Converter {
  27         private static final Log log = LogFactory.getLog(ThumbnailConverter.class);
  28
  29         @Override
  30         public BlobHolder convert(BlobHolder blobHolder,
  31                         Map<String, Serializable> parameters) throws ConversionException {
  32                 try {
  33                         // Make sure the toThumbnail command is available
  34                         CommandLineExecutorService cles = Framework
  35                                         .getLocalService(CommandLineExecutorService.class);
  36                         CommandAvailability commandAvailability = cles
  37                                         .getCommandAvailability("toThumbnail");
  38                         if (!commandAvailability.isAvailable()) {
  39                                 return null;
  40                         }
  41                         // get the input and output of the command
  42                         Blob blob = blobHolder.getBlob();
  43                         File inputFile = null;
  44                         if (blob instanceof FileBlob) {
  45                                 inputFile = ((FileBlob) blob).getFile();
  46                         } else if (blob instanceof SQLBlob) {
  47                                 StreamSource source = ((SQLBlob) blob).getBinary()
  48                                                 .getStreamSource();
  49                                 inputFile = ((FileSource) source).getFile();
  50                         }
  51                         if (inputFile == null) {
  52                                 return null;
  53                         }
  54                         CmdParameters params = new CmdParameters();
  55                         File outputFile = File.createTempFile("nuxeoImageTarget", "."
  56                                         + "png");
  57                         params.addNamedParameter("inputFilePath", inputFile);
  58                         params.addNamedParameter("outputFilePath", outputFile);
  59
  60                         ExecResult res = cles.execCommand("toThumbnail", params);
  61                         if (!res.isSuccessful()) {
  62                                 return null;
  63                         }
  64                         Blob targetBlob = new FileBlob(outputFile);
  65                         Framework.trackFile(outputFile, targetBlob);
  66                         return new SimpleCachableBlobHolder(targetBlob);
  67                 } catch (Exception e) {
  68                         throw new ConversionException("Thumbnail conversion has failed", e);
  69                 }
  70         }
  71
  72         @Override
  73         public void init(ConverterDescriptor descriptor) {
  74         }
  75 }