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