# Author: Alina Quereilhac <alina.quereilhac@inria.fr>
from nepi.execution.attribute import Attribute, Flags, Types
-from nepi.execution.resource import ResourceManager, clsinit_copy, ResourceState, \
- reschedule_delay
+from nepi.execution.resource import clsinit_copy, ResourceState, \
+ reschedule_delay, failtrap
from nepi.resources.linux.application import LinuxApplication
from nepi.resources.planetlab.node import PlanetlabNode
from nepi.util.timefuncs import tnow, tdiffsec
@clsinit_copy
class PlanetlabTap(LinuxApplication):
_rtype = "PlanetlabTap"
+ _help = "Creates a TAP device on a PlanetLab host"
+ _backend = "planetlab"
@classmethod
def _register_attributes(cls):
self._run_in_background()
# Retrive if_name
- if_name = self._wait_if_name()
+ if_name = self.wait_if_name()
self.set("deviceName", if_name)
+ @failtrap
def deploy(self):
if not self.node or self.node.state < ResourceState.PROVISIONED:
self.ec.schedule(reschedule_delay, self.deploy)
if not self.get("install"):
self.set("install", self._install)
- try:
- self.discover()
- self.provision()
- except:
- self.fail()
- raise
-
+ self.discover()
+ self.provision()
+
self.debug("----- READY ---- ")
- self._ready_time = tnow()
- self._state = ResourceState.READY
+ self.set_ready()
+ @failtrap
def start(self):
- if self._state == ResourceState.READY:
+ if self.state == ResourceState.READY:
command = self.get("command")
self.info("Starting command '%s'" % command)
- self._start_time = tnow()
- self._state = ResourceState.STARTED
+ self.set_started()
else:
msg = " Failed to execute command '%s'" % command
self.error(msg, out, err)
- self._state = ResourceState.FAILED
raise RuntimeError, msg
+ @failtrap
def stop(self):
command = self.get('command') or ''
- state = self.state
- if state == ResourceState.STARTED:
+ if self.state == ResourceState.STARTED:
self.info("Stopping command '%s'" % command)
command = "bash %s" % os.path.join(self.app_home, "stop.sh")
(out, err), proc = self.execute_command(command,
blocking = True)
- self._stop_time = tnow()
- self._state = ResourceState.STOPPED
+ self.set_stopped()
@property
def state(self):
if out.strip().find(self.get("deviceName")) == -1:
# tap is not running is not running (socket not found)
- self._state = ResourceState.FINISHED
+ self.finish()
self._last_state_check = tnow()
return self._state
- def _wait_if_name(self):
+ def release(self):
+ # Node needs to wait until all associated RMs are released
+ # to be released
+ try:
+ from nepi.resources.linux.udptunnel import UdpTunnel
+ rms = self.get_connected(UdpTunnel.rtype())
+ for rm in rms:
+ if rm.state < ResourceState.STOPPED:
+ self.ec.schedule(reschedule_delay, self.release)
+ return
+ except:
+ import traceback
+ err = traceback.format_exc()
+ self.error(err)
+
+ super(PlanetlabTap, self).release()
+
+ def wait_if_name(self):
""" Waits until the if_name file for the command is generated,
and returns the if_name for the device """
if_name = None
else:
msg = "Couldn't retrieve if_name"
self.error(msg, out, err)
- self.fail()
raise RuntimeError, msg
return if_name