+ self.node.upload_command(stop_command,
+ shfile = os.path.join(self.app_home, "stop.sh"),
+ # Overwrite file every time.
+ # The stop.sh has the path to the socket, which should change
+ # on every experiment run.
+ overwrite = True)
+
+ def upload_start_command(self):
+ super(PlanetlabTap, self).upload_start_command()
+
+ # Planetlab TAPs always add a PI header
+ self.set("pi", True)
+
+ if not self.gre_enabled:
+ # After creating the TAP, the pl-vif-create.py script
+ # will write the name of the TAP to a file. We wait until
+ # we can read the interface name from the file.
+ vif_name = self.wait_vif_name()
+ self.set("deviceName", vif_name)
+
+ def wait_vif_name(self, exec_run_home = None):
+ """ Waits until the vif_name file for the command is generated,
+ and returns the vif_name for the device """
+ vif_name = None
+ delay = 0.5
+
+ # The vif_name file will be created in the tap-home, while the
+ # current execution home might be elsewhere to check for errors
+ # (e.g. could be a tunnel-home)
+ if not exec_run_home:
+ exec_run_home = self.run_home
+
+ for i in xrange(20):
+ (out, err), proc = self.node.check_output(self.run_home, "vif_name")
+
+ if proc.poll() > 0:
+ (out, err), proc = self.node.check_errors(exec_run_home)
+
+ if err.strip():
+ raise RuntimeError, err