def __init__(self):
"""Initialise the main interface.
"""
# Register a handler for catching Ctrl+c
signal.signal(signal.SIGINT, self.signal_handler)
# Create and initialise CLI objects
cmd.Cmd.__init__(self)
self.intro = "Welcome to the ACLSwitch command line " \
"interface.\nType help or ? to list the " \
"available commands.\n"
self.prompt = "(ACLSwitch) "
self._policy = Policy(self, self._URL_ACLSW)
self._acl = ACL(self, self._URL_ACLSW)
class ACLSwitchCLI(cmd.Cmd):
"""An interactive Command Line Interface (CLI) for ACLSwitch.
"""
MSG_ERR_ACLSW_CON = "ERROR: Unable to establish a connection with " \
"ACLSwitch."
MSG_ERR_ACLSW_CON_LOST = "ERROR: Connection with ACLSwitch lost."
_URL_ACLSW = "http://127.0.0.1:8080/aclswitch"
_VERSION = "1.0.1"
def __init__(self):
"""Initialise the main interface.
"""
# Register a handler for catching Ctrl+c
signal.signal(signal.SIGINT, self.signal_handler)
# Create and initialise CLI objects
cmd.Cmd.__init__(self)
self.intro = "Welcome to the ACLSwitch command line " \
"interface.\nType help or ? to list the " \
"available commands.\n"
self.prompt = "(ACLSwitch) "
self._policy = Policy(self, self._URL_ACLSW)
self._acl = ACL(self, self._URL_ACLSW)
def do_acl(self, arg):
"""Present the user with different options to modify rules.
"""
self._acl.cmdloop()
def do_policy(self, arg):
"""Present the user with different options to modify policy domains.
"""
self._policy.cmdloop()
def do_status(self, arg):
"""Fetch some basic information from ACLSwitch.
"""
info = self._fetch_status()
if info is None:
return
print("ACLSwitch CLI version: {0}".format(self._VERSION))
print("ACLSwitch version: {0}".format(info["version"]))
print("Number of ACL rules: {0}".format(info["num_rules"]))
print("Number of policy domains: {0}".format(info[
"num_policies"]))
print("Number of registered switches: {0}".format(info[
"num_switches"]))
def do_exit(self, arg):
"""Close the program.
"""
self._close_program()
def _fetch_status(self):
"""Fetch some basic status information from ACLSwitch.
:return: Information in a dict, None if error.
"""
print("Fetching status information...")
try:
resp = requests.get(self._URL_ACLSW)
except requests.ConnectionError as err:
print(cli_util.MSG_CON_ERR + str(err))
return None
except requests.HTTPError as err:
print(cli_util.MSG_HTTP_ERR + str(err))
return None
except requests.Timeout as err:
print(cli_util.MSG_TIMEOUT + str(err))
return None
except requests.TooManyRedirects as err:
print(cli_util.MSG_REDIRECT_ERR + str(err))
return None
if resp.status_code != 200:
print("Error fetching resource, HTTP {0} "
"returned.".format(resp.status_code))
return None
return resp.json()
def signal_handler(self, sig, frame):
self._close_program()
def _close_program(self):
print("\n")
sys.exit(0)
