def detectoldbridge(self):
"""
Occasionally, control net bridges from previously closed sessions are not cleaned up.
Check if there are old control net bridges and delete them
:return: True if an old bridge was detected, False otherwise
:rtype: bool
"""
status, output = utils.cmd_output([constants.BRCTL_BIN, "show"])
if status != 0:
logging.error("Unable to retrieve list of installed bridges")
else:
lines = output.split("\n")
for line in lines[1:]:
cols = line.split("\t")
oldbr = cols[0]
flds = cols[0].split(".")
if len(flds) == 3:
if flds[0] == "b" and flds[1] == self.id:
logging.error(
"error: An active control net bridge (%s) found. "
"An older session might still be running. "
"Stop all sessions and, if needed, delete %s to continue.",
oldbr, oldbr)
return True
return False
def ns_cmd(self, cmd):
if isinstance(cmd, list):
cmd = " ".join(cmd)
args = "nsenter -t {pid} -u -i -p -n {cmd}".format(pid=self.pid,
cmd=cmd)
logging.info("ns cmd: %s", args)
return utils.cmd_output(args)
def copy_file(self, source, destination):
if destination[0] != "/":
destination = os.path.join("/root/", destination)
args = "lxc file push {source} {name}/{destination}".format(
source=source, name=self.name, destination=destination)
status, output = utils.cmd_output(args)
if status:
raise CoreCommandError(status, args, output)
def get_pid(self):
args = "docker inspect -f '{{{{.State.Pid}}}}' {name}".format(
name=self.name)
status, output = utils.cmd_output(args)
if status:
raise CoreCommandError(status, args, output)
self.pid = output
logging.debug("node(%s) pid: %s", self.name, self.pid)
return output
def get_info(self):
args = "lxc list {name} --format json".format(name=self.name)
status, output = utils.cmd_output(args)
if status:
raise CoreCommandError(status, args, output)
data = json.loads(output)
if not data:
raise CoreCommandError(
status, args, "LXC({name}) not present".format(name=self.name))
return data[0]
def get_info(self):
args = "docker inspect {name}".format(name=self.name)
status, output = utils.cmd_output(args)
if status:
raise CoreCommandError(status, args, output)
data = json.loads(output)
if not data:
raise CoreCommandError(
status, args,
"docker({name}) not present".format(name=self.name))
return data[0]
def detectversionfromcmd(cls):
"""
Detect the apache2 version using the 'a2query' command.
"""
try:
status, result = utils.cmd_output(["a2query", "-v"])
except CoreCommandError:
status = -1
if status == 0 and result[:3] == "2.4":
return cls.APACHEVER24
return cls.APACHEVER22
def ns_cmd_output(self, cmd):
if isinstance(cmd, list):
cmd = " ".join(cmd)
args = self._ns_args(cmd)
logging.info("ns cmd: %s", args)
return utils.cmd_output(args)
def cmd_output(self, cmd):
if isinstance(cmd, list):
cmd = " ".join(cmd)
args = self._cmd_args(cmd)
logging.info("lxc cmd output: %s", args)
return utils.cmd_output(args)
def copy_file(self, source, destination):
args = "docker cp {source} {name}:{destination}".format(
source=source, name=self.name, destination=destination)
status, output = utils.cmd_output(args)
if status:
raise CoreCommandError(status, args, output)
def cmd_output(self, cmd):
if isinstance(cmd, list):
cmd = " ".join(cmd)
logging.info("docker cmd output: %s", cmd)
return utils.cmd_output("docker exec {name} {cmd}".format(
name=self.name, cmd=cmd))