implemented logout

jupyter-openbis-server/connection.py

@@ -63,6 +63,10 @@ class OpenBISConnection:
         self.password = password
         self.status  = 'connected'
 
+    def logout(self):
+        self.openbis.logout()
+        self.status = "not connected"
+
     def mount(self, username=None, password=None, hostname=None):
         if username is None:
             username=self.username
@@ -231,6 +235,20 @@ class OpenBISConnectionHandler(IPythonHandler):
                 })
             return
 
+        if data.get('action','') == 'logout':
+            try:
+                conn.logout()
+                self.write({
+                    'status'     : 200,
+                    'connection' : conn.get_info(),
+                })
+            except Exception as err:
+                self.set_status(500)
+                self.write({
+                    "reason": "logout failed: {}".format(err)
+                })
+            return
+
         # no action given, try to connect instead
 
         try:
@@ -254,9 +272,9 @@ class OpenBISConnectionHandler(IPythonHandler):
             })
 
         self.write({
-            'status'     : 200,
-            'connection' : conn.get_info(),
-            ''           : self._notebook_dir()
+            'status'       : 200,
+            'connection'   : conn.get_info(),
+            'notebook_dir' : self._notebook_dir()
         })
 
     def get(self, connection_name):