"""A caching layer around the kernel's network mapping between IPs and MACs"""
+
import datetime
import logging
import os
-from typing import Any, Optional
import warnings
+from typing import Any, Optional
from overrides import overrides
import argparse_utils
-from collect.bidict import BiDict
import config
import exec_utils
import file_utils
import persistent
-import string_utils
import site_config
+import string_utils
+from collect.bidict import BiDict
logger = logging.getLogger(__name__)
)
class Arper(persistent.Persistent):
def __init__(self, cached_state: Optional[BiDict] = None) -> None:
self.state = BiDict()
self.update_from_arp_scan()
self.update_from_arp()
if len(self.state) < config.config['arper_min_entries_to_be_valid']:
- raise Exception(
- f'Arper didn\'t find enough entries; only got {len(self.state)}.'
- )
+ raise Exception(f'Arper didn\'t find enough entries; only got {len(self.state)}.')
def update_from_arp_scan(self):
network_spec = site_config.get_config().network
for line in output.split('\n'):
ip = string_utils.extract_ip_v4(line)
mac = string_utils.extract_mac_address(line)
- if (
- ip is not None
- and mac is not None
- and mac != 'UNKNOWN'
- and ip != 'UNKNOWN'
- ):
+ if ip is not None and mac is not None and mac != 'UNKNOWN' and ip != 'UNKNOWN':
mac = mac.lower()
logger.debug(f'ARPER: {mac} => {ip}')
self.state[mac] = ip
for line in output.split('\n'):
ip = string_utils.extract_ip_v4(line)
mac = string_utils.extract_mac_address(line)
- if (
- ip is not None
- and mac is not None
- and mac != 'UNKNOWN'
- and ip != 'UNKNOWN'
- ):
+ if ip is not None and mac is not None and mac != 'UNKNOWN' and ip != 'UNKNOWN':
mac = mac.lower()
logger.debug(f'ARPER: {mac} => {ip}')
self.state[mac] = ip