CmsFsProvider.java

   1 package org.argeo.cms.internal.kernel;
   2
   3 import java.io.IOException;
   4 import java.net.URI;
   5 import java.nio.file.FileSystem;
   6 import java.nio.file.FileSystemAlreadyExistsException;
   7 import java.nio.file.Path;
   8 import java.util.HashMap;
   9 import java.util.Map;
  10
  11 import javax.jcr.Repository;
  12 import javax.jcr.Session;
  13
  14 import org.argeo.cms.CmsException;
  15 import org.argeo.cms.auth.CurrentUser;
  16 import org.argeo.jackrabbit.fs.AbstractJackrabbitFsProvider;
  17 import org.argeo.jcr.fs.JcrFileSystem;
  18 import org.argeo.jcr.fs.JcrFsException;
  19 import org.osgi.framework.BundleContext;
  20 import org.osgi.framework.FrameworkUtil;
  21
  22 public class CmsFsProvider extends AbstractJackrabbitFsProvider {
  23         private Map<String, JcrFileSystem> fileSystems = new HashMap<>();
  24         private BundleContext bc = FrameworkUtil.getBundle(CmsFsProvider.class).getBundleContext();
  25
  26         @Override
  27         public String getScheme() {
  28                 return "node";
  29         }
  30
  31         @Override
  32         public FileSystem newFileSystem(URI uri, Map<String, ?> env) throws IOException {
  33                 String username = CurrentUser.getUsername();
  34                 if (username == null) {
  35                         // TODO deal with anonymous
  36                         return null;
  37                 }
  38                 if (fileSystems.containsKey(username))
  39                         throw new FileSystemAlreadyExistsException("CMS file system already exists for user " + username);
  40
  41                 try {
  42                         Repository repository = bc
  43                                         .getService(bc.getServiceReferences(Repository.class, "(cn=node)").iterator().next());
  44                         Session session = repository.login();
  45                         JcrFileSystem fileSystem = new JcrFileSystem(this, session);
  46                         fileSystems.put(username, fileSystem);
  47                         return fileSystem;
  48                 } catch (Exception e) {
  49                         throw new CmsException("Cannot open file system " + uri + " for user " + username, e);
  50                 }
  51         }
  52
  53         @Override
  54         public FileSystem getFileSystem(URI uri) {
  55                 return currentUserFileSystem();
  56         }
  57
  58         @Override
  59         public Path getPath(URI uri) {
  60                 JcrFileSystem fileSystem = currentUserFileSystem();
  61                 String path = uri.getPath();
  62                 if (fileSystem == null)
  63                         try {
  64                                 fileSystem = (JcrFileSystem) newFileSystem(uri, new HashMap<String, Object>());
  65                         } catch (IOException e) {
  66                                 throw new JcrFsException("Could not autocreate file system", e);
  67                         }
  68                 return fileSystem.getPath(path);
  69         }
  70
  71         protected JcrFileSystem currentUserFileSystem() {
  72                 String username = CurrentUser.getUsername();
  73                 return fileSystems.get(username);
  74         }
  75 }