def is_this_vendor(self, host, credential):
"""
Determine if the hostname is accociated witH this vendor.
This example will use snmp sysDescr OID ,regex to extract
the vendor's name ,and then compare with self.name variable.
:param host: swtich's IP address
:param credential: credential to access switch
"""
if not utils.valid_ip_format(host):
#invalid ip address
return False
if "Version" not in credential or "Community" not in credential:
# The format of credential is incompatible with this vendor
error_msg = "[huawei]Missing 'Version' or 'Community' in %r"
logging.error(error_msg, credential)
return False
sys_info = utils.snmp_get(host, credential, "sysDescr.0")
if not sys_info:
return False
if re.search(r"\b" + re.escape(self.__name) + r"\b", sys_info.lower()):
return True
return False
def is_this_vendor(self, host, credential):
"""
Determine if the hostname is accociated witH this vendor.
This example will use snmp sysDescr OID ,regex to extract
the vendor's name ,and then compare with self.name variable.
:param host: swtich's IP address
:param credential: credential to access switch
"""
if not utils.valid_ip_format(host):
#invalid ip address
return False
if "Version" not in credential or "Community" not in credential:
# The format of credential is incompatible with this vendor
error_msg = "[huawei]Missing 'Version' or 'Community' in %r"
logging.error(error_msg, credential)
return False
sys_info = utils.snmp_get(host, credential, "sysDescr.0")
if not sys_info:
return False
if re.search(r"\b" + re.escape(self.__name) + r"\b", sys_info.lower()):
return True
return False
def get_vendor(self, host, credential):
"""Check and get vendor of the switch.
:param host: switch ip:
:param credential: credential to access switch
:return a tuple (vendor, switch_state, error)
"""
# Returen appliance plugin once we see 127.0.0.1 ass switch ip
if host == '127.0.0.1':
return ("appliance", "Found", "")
# TODO(grace): Why do we need to have valid IP?
# a hostname should also work.
if not utils.valid_ip_format(host):
logging.error("host '%s' is not valid IP address!", host)
return (None, ERROR, "Invalid IP address %s!" % host)
if not utils.is_valid_snmp_v2_credential(credential):
logging.debug("******The credential %s of host %s cannot "
"be used for either SNMP v2 or SSH*****",
credential, host)
return (None, ERROR, "Invalid credential")
sys_info, err = self.get_sys_info(host, credential)
if not sys_info:
return (None, UNREACHABLE, err)
# List all vendors in vendors directory -- a directory but hidden
# under ../vendors
all_vendors = [o for o in os.listdir(self.vendors_dir)
if os.path.isdir(os.path.join(self.vendors_dir, o))
and re.match(r'^[^\.]', o)]
logging.debug("[get_vendor][available vendors]: %s ", all_vendors)
logging.debug("[get_vendor] System Information is [%s]", sys_info)
# TODO(grace): should not conver to lower. The vendor impl can choose
# to do case-insensitive match
# sys_info = sys_info.lower()
vendor = None
for vname in all_vendors:
vpath = os.path.join(self.vendors_dir, vname)
instance = utils.load_module(vname, vpath)
if not instance:
logging.error('no instance %s load from %s', vname, vpath)
continue
if instance.is_this_vendor(sys_info):
logging.info("[get_vendor]****Found vendor '%s'****", vname)
vendor = vname
break
if not vendor:
logging.debug("[get_vendor] No vendor found! <==================")
return (None, NOTSUPPORTED, "Not supported switch vendor!")
return (vendor, "Found", "")
