+ format(self._hostname))
+
+ def apply_config_lxc(self, lxc_name, waittime=5, retries=12):
+ """Generate and apply VPP configuration for node in a container.
+
+ Use data from calls to this class to form a startup.conf file and
+ replace /etc/vpp/startup.conf with it on node inside a container.
+
+ :param lxc_name: LXC container name.
+ :param waittime: Time to wait for VPP to restart (default 5 seconds).
+ :param retries: Number of times (default 12) to re-try waiting.
+ :type lxc_name: str
+ :type waittime: int
+ :type retries: int
+ :raises RuntimeError: If writing config file failed, or restarting of
+ VPP failed.
+ """
+ self.dump_config(self._nodeconfig)
+
+ ssh = SSH()
+ ssh.connect(self._node)
+
+ # We're using this "| sudo tee" construct because redirecting
+ # a sudo's output ("sudo echo xxx > /path/to/file") does not
+ # work on most platforms...
+ (ret, _, _) = \
+ ssh.exec_command_lxc('echo "{0}" | sudo tee {1}'.
+ format(self._vpp_config,
+ self._vpp_config_filename), lxc_name)
+
+ if ret != 0:
+ raise RuntimeError('Writing config file failed in {0} to node {1}'.
+ format(lxc_name, self._hostname))
+
+ # Instead of restarting, we'll do separate start and stop
+ # actions. This way we don't care whether VPP was running
+ # to begin with.
+ ssh.exec_command_lxc('service {0} stop'.
+ format(self._vpp_service_name), lxc_name)
+ (ret, _, _) = \
+ ssh.exec_command_lxc('service {0} start'.
+ format(self._vpp_service_name), lxc_name)
+ if ret != 0:
+ raise RuntimeError('Restarting VPP failed in {0} on node {1}'.
+ format(lxc_name, self._hostname))
+
+ # Sleep <waittime> seconds, up to <retry> times,
+ # and verify if VPP is running.
+ for _ in range(retries):
+ time.sleep(waittime)
+ (ret, _, _) = \
+ ssh.exec_command_lxc('echo show hardware-interfaces | '
+ 'nc 0 5002 || echo "VPP not yet running"',
+ lxc_name)
+ if ret == 0:
+ break
+ else:
+ raise RuntimeError('VPP failed to restart in {0} on node {1}'.
+ format(lxc_name, self._hostname))