def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
"""Unplug the interface."""
tap_name = self._get_tap_name(device_name, prefix)
try:
cmd = ['ivs-ctl', 'del-port', tap_name]
utils.execute(cmd, run_as_root=True)
device = ip_lib.IPDevice(device_name, namespace=namespace)
device.link.delete()
LOG.debug("Unplugged interface '%s'", device_name)
except RuntimeError:
LOG.error(_LE("Failed unplugging interface '%s'"),
device_name)
def _kill_process(self, pid, kill_signal):
try:
# A process started by a root helper will be running as
# root and need to be killed via the same helper.
utils.execute(['kill', '-%d' % kill_signal, pid],
run_as_root=self.run_as_root)
except Exception as ex:
stale_pid = (isinstance(ex, RuntimeError) and
'No such process' in str(ex))
if not stale_pid:
LOG.exception(_LE('An error occurred while killing [%s].'),
self.cmd)
return False
if self._process:
self._process.wait()
return True
def _kill_process(self, pid, kill_signal):
try:
# A process started by a root helper will be running as
# root and need to be killed via the same helper.
utils.execute(['kill', '-%d' % kill_signal, pid],
run_as_root=self.run_as_root)
except Exception as ex:
stale_pid = (isinstance(ex, RuntimeError)
and 'No such process' in str(ex))
if not stale_pid:
LOG.exception(_LE('An error occurred while killing [%s].'),
self.cmd)
return False
if self._process:
self._process.wait()
return True
def disable(self, sig='9', get_stop_command=None):
pid = self.pid
if self.active:
if get_stop_command:
cmd = get_stop_command(self.get_pid_file_name())
ip_wrapper = ip_lib.IPWrapper(namespace=self.namespace)
ip_wrapper.netns.execute(cmd, addl_env=self.cmd_addl_env)
else:
cmd = ['kill', '-%s' % (sig), pid]
utils.execute(cmd, run_as_root=True)
# In the case of shutting down, remove the pid file
if sig == '9':
fileutils.delete_if_exists(self.get_pid_file_name())
elif pid:
LOG.debug('Process for %(uuid)s pid %(pid)d is stale, ignoring '
'signal %(signal)s', {'uuid': self.uuid, 'pid': pid,
'signal': sig})
else:
LOG.debug('No process started for %s', self.uuid)
def disable(self, sig='9', get_stop_command=None):
pid = self.pid
if self.active:
if get_stop_command:
cmd = get_stop_command(self.get_pid_file_name())
ip_wrapper = ip_lib.IPWrapper(namespace=self.namespace)
ip_wrapper.netns.execute(cmd, addl_env=self.cmd_addl_env)
else:
cmd = ['kill', '-%s' % (sig), pid]
utils.execute(cmd, run_as_root=True)
# In the case of shutting down, remove the pid file
if sig == '9':
fileutils.delete_if_exists(self.get_pid_file_name())
elif pid:
LOG.debug(
'Process for %(uuid)s pid %(pid)d is stale, ignoring '
'signal %(signal)s', {
'uuid': self.uuid,
'pid': pid,
'signal': sig
})
else:
LOG.debug('No process started for %s', self.uuid)
def _get_ip_link_output(cls):
"""Gets the output of the ip link help command
Runs ip link help command and stores its output
Note: ip link help return error and writes its output to stderr
so we get the output from there. however, if this issue
will be solved and the command will write to stdout, we
will get the output from there too.
"""
try:
ip_cmd = ['ip', 'link', 'help']
_stdout, _stderr = utils.execute(ip_cmd,
check_exit_code=False,
return_stderr=True,
log_fail_as_error=False)
except Exception as e:
LOG.exception(_LE("Failed executing ip command"))
raise UnsupportedIpLinkCommand(reason=e)
return _stdout or _stderr
def _get_ip_link_output(cls):
"""Gets the output of the ip link help command
Runs ip link help command and stores its output
Note: ip link help return error and writes its output to stderr
so we get the output from there. however, if this issue
will be solved and the command will write to stdout, we
will get the output from there too.
"""
try:
ip_cmd = ['ip', 'link', 'help']
_stdout, _stderr = utils.execute(
ip_cmd,
check_exit_code=False,
return_stderr=True,
log_fail_as_error=False)
except Exception as e:
LOG.exception(_LE("Failed executing ip command"))
raise UnsupportedIpLinkCommand(reason=e)
return _stdout or _stderr
def _ivs_add_port(self, device_name, port_id, mac_address):
cmd = ['ivs-ctl', 'add-port', device_name]
utils.execute(cmd, run_as_root=True)
def show(cls, dev=None):
cmd = ['bridge', 'fdb', 'show']
if dev:
cmd += ['dev', dev]
return utils.execute(cmd, run_as_root=True)
def delete(cls, mac, dev):
return utils.execute(['bridge', 'fdb', 'delete', mac, 'dev', dev],
run_as_root=True)
def show(cls, dev=None):
cmd = ['bridge', 'fdb', 'show']
if dev:
cmd += ['dev', dev]
return utils.execute(cmd, run_as_root=True)
def delete(cls, mac, dev):
return utils.execute(['bridge', 'fdb', 'delete', mac, 'dev', dev],
run_as_root=True)