Adding data progressing functions for CCN

[nepi.git] / src / nepi / resources / linux / application.py

diff --git a/src/nepi/resources/linux/application.py b/src/nepi/resources/linux/application.py
index 86cf9c9..ca9772d 100644 (file)
--- a/src/nepi/resources/linux/application.py
+++ b/src/nepi/resources/linux/application.py
@@ -173,7 +173,9 @@ class LinuxApplication(ResourceManager):
         super(LinuxApplication, self).__init__(ec, guid)
         self._pid = None
         self._ppid = None
+        self._node = None
         self._home = "app-%s" % self.guid
+
         # whether the command should run in foreground attached
         # to a terminal
         self._in_foreground = False
@@ -194,9 +196,16 @@ class LinuxApplication(ResourceManager):
 
     @property
     def node(self):
-        node = self.get_connected(LinuxNode.get_rtype())
-        if node: return node[0]
-        return None
+        if not self._node:
+            node = self.get_connected(LinuxNode.get_rtype())
+            if not node: 
+                msg = "Application %s guid %d NOT connected to Node" % (
+                        self._rtype, self.guid)
+                raise RuntimeError, msg
+
+            self._node = node[0]
+
+        return self._node
 
     @property
     def app_home(self):
@@ -639,7 +648,7 @@ class LinuxApplication(ResourceManager):
                     if (proc and proc.poll()) or err:
                         msg = " Failed to STOP command '%s' " % self.get("command")
                         self.error(msg, out, err)
-        
+            
             super(LinuxApplication, self).do_stop()
 
     def do_release(self):
@@ -711,6 +720,7 @@ class LinuxApplication(ResourceManager):
     def execute_command(self, command, 
             env = None,
             sudo = False,
+            tty = False,
             forward_x11 = False,
             blocking = False):
 
@@ -722,6 +732,7 @@ class LinuxApplication(ResourceManager):
 
         return self.node.execute(command,
                 sudo = sudo,
+                tty = tty,
                 forward_x11 = forward_x11,
                 blocking = blocking)