mirror of
https://github.com/KevinMidboe/mktxp-no-cli.git
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116 lines
4.7 KiB
Python
116 lines
4.7 KiB
Python
# coding=utf8
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## Copyright (c) 2020 Arseniy Kuznetsov
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##
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## This program is free software; you can redistribute it and/or
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## modify it under the terms of the GNU General Public License
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## as published by the Free Software Foundation; either version 2
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## of the License, or (at your option) any later version.
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##
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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import ssl
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import socket
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from datetime import datetime
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from routeros_api import RouterOsApiPool
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from mktxp.cli.config.config import config_handler
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class RouterAPIConnectionError(Exception):
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pass
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class RouterAPIConnection:
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''' Base wrapper interface for the routeros_api library
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'''
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def __init__(self, router_name, router_entry):
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self.router_name = router_name
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self.router_entry = router_entry
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self.last_failure_timestamp = self.successive_failure_count = 0
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ctx = None
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if self.router_entry.use_ssl and self.router_entry.no_ssl_certificate:
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ctx = ssl.create_default_context()
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ctx.set_ciphers('ADH:@SECLEVEL=0')
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self.connection = RouterOsApiPool(
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host = self.router_entry.hostname,
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username = self.router_entry.username,
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password = self.router_entry.password,
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port = self.router_entry.port,
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plaintext_login = True,
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use_ssl = self.router_entry.use_ssl,
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ssl_verify = self.router_entry.ssl_certificate_verify,
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ssl_context = ctx)
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self.connection.socket_timeout = config_handler._entry().socket_timeout
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self.api = None
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def is_connected(self):
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if not (self.connection and self.connection.connected and self.api):
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return False
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try:
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self.api.get_resource('/system/identity').get()
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return True
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except (socket.error, socket.timeout, Exception) as exc:
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self._set_connect_state(success = False, exc = exc)
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return False
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def connect(self):
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connect_time = datetime.now()
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if self.is_connected() or self._in_connect_timeout(connect_time.timestamp()):
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return
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try:
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print(f'Connecting to router {self.router_name}@{self.router_entry.hostname}')
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self.api = self.connection.get_api()
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self._set_connect_state(success = True, connect_time = connect_time)
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except (socket.error, socket.timeout, Exception) as exc:
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self._set_connect_state(success = False, connect_time = connect_time, exc = exc)
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#raise RouterAPIConnectionError
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def router_api(self):
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if not self.is_connected():
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self.connect()
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return self.api
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def _in_connect_timeout(self, connect_timestamp, quiet = True):
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connect_delay = self._connect_delay()
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if (connect_timestamp - self.last_failure_timestamp) < connect_delay:
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if not quiet:
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print(f'{self.router_name}@{self.router_entry.hostname}: in connect timeout, {int(connect_delay - (connect_timestamp - self.last_failure_timestamp))}secs remaining')
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print(f'Successive failure count: {self.successive_failure_count}')
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return True
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if not quiet:
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print(f'{self.router_name}@{self.router_entry.hostname}: OK to connect')
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if self.last_failure_timestamp > 0:
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print(f'Seconds since last failure: {connect_timestamp - self.last_failure_timestamp}')
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print(f'Prior successive failure count: {self.successive_failure_count}')
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return False
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def _connect_delay(self):
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mktxp_entry = config_handler._entry()
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connect_delay = (1 + self.successive_failure_count / mktxp_entry.delay_inc_div) * mktxp_entry.initial_delay_on_failure
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return connect_delay if connect_delay < mktxp_entry.max_delay_on_failure else mktxp_entry.max_delay_on_failure
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def _set_connect_state(self, success = False, connect_time = datetime.now(), exc = None):
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if success:
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self.last_failure_timestamp = 0
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self.successive_failure_count = 0
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print(f'{connect_time.strftime("%Y-%m-%d %H:%M:%S")} Connection to router {self.router_name}@{self.router_entry.hostname} has been established')
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else:
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self.api = None
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self.successive_failure_count += 1
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self.last_failure_timestamp = connect_time.timestamp()
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print(f'{connect_time.strftime("%Y-%m-%d %H:%M:%S")} Connection to router {self.router_name}@{self.router_entry.hostname} has failed: {exc}')
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