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.Node;
  12 import javax.jcr.Repository;
  13 import javax.jcr.Session;
  14
  15 import org.argeo.cms.CmsException;
  16 import org.argeo.cms.auth.CurrentUser;
  17 import org.argeo.jackrabbit.fs.AbstractJackrabbitFsProvider;
  18 import org.argeo.jcr.fs.JcrFileSystem;
  19 import org.argeo.jcr.fs.JcrFsException;
  20 import org.argeo.node.NodeConstants;
  21 import org.argeo.node.NodeUtils;
  22 import org.osgi.framework.BundleContext;
  23 import org.osgi.framework.FrameworkUtil;
  24
  25 public class CmsFsProvider extends AbstractJackrabbitFsProvider {
  26         private Map<String, JcrFileSystem> fileSystems = new HashMap<>();
  27         private BundleContext bc = FrameworkUtil.getBundle(CmsFsProvider.class).getBundleContext();
  28
  29         @Override
  30         public String getScheme() {
  31                 return NodeConstants.SCHEME_NODE;
  32         }
  33
  34         @Override
  35         public FileSystem newFileSystem(URI uri, Map<String, ?> env) throws IOException {
  36                 String username = CurrentUser.getUsername();
  37                 if (username == null) {
  38                         // TODO deal with anonymous
  39                         return null;
  40                 }
  41                 if (fileSystems.containsKey(username))
  42                         throw new FileSystemAlreadyExistsException("CMS file system already exists for user " + username);
  43
  44                 try {
  45                         Repository repository = bc.getService(
  46                                         bc.getServiceReferences(Repository.class, "(cn=" + NodeConstants.HOME + ")").iterator().next());
  47                         Session session = repository.login();
  48                         JcrFileSystem fileSystem = new JcrFileSystem(this, session);
  49                         fileSystems.put(username, fileSystem);
  50                         return fileSystem;
  51                 } catch (Exception e) {
  52                         throw new CmsException("Cannot open file system " + uri + " for user " + username, e);
  53                 }
  54         }
  55
  56         @Override
  57         public FileSystem getFileSystem(URI uri) {
  58                 return currentUserFileSystem();
  59         }
  60
  61         @Override
  62         public Path getPath(URI uri) {
  63                 JcrFileSystem fileSystem = currentUserFileSystem();
  64                 String path = uri.getPath();
  65                 if (fileSystem == null)
  66                         try {
  67                                 fileSystem = (JcrFileSystem) newFileSystem(uri, new HashMap<String, Object>());
  68                         } catch (IOException e) {
  69                                 throw new JcrFsException("Could not autocreate file system", e);
  70                         }
  71                 return fileSystem.getPath(path);
  72         }
  73
  74         protected JcrFileSystem currentUserFileSystem() {
  75                 String username = CurrentUser.getUsername();
  76                 return fileSystems.get(username);
  77         }
  78
  79         public Node getUserHome(Session session) {
  80                 return NodeUtils.getUserHome(session);
  81         }
  82 }