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##
# Copyright 2022 Telefonica Investigacion y Desarrollo, S.A.U.
# This file is part of OSM
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# For those usages not covered by the Apache License, Version 2.0 please
# contact with: nfvlabs@tid.es
##
import logging
import asyncio
import asyncssh
import time
from mysql.connector import connect, Error
logger = logging.getLogger("osm_ee.vnf")
async def ssh_exec(host: str, user: str, command: str
) -> (int, str):
"""
Execute a remote command via SSH.
"""
try:
async with asyncssh.connect(host,
username=user,
known_hosts=None) as conn:
logger.debug("Executing command '{}'".format(command))
result = await conn.run(command)
logger.debug("Result: {}".format(result))
return result.exit_status, result.stderr
except Exception as e:
logger.error("Error: {}".format(repr(e)))
return -1, str(e)
def mysql_query(host: str, user: str, password: str, retries: int, query: str
) -> (int, str):
"""
Execute a query to a MySQL database.
"""
text = ""
logger.debug("Host: '{}', user: '{}', password: '{}', query: '{}'".format(host, user, password, query))
for i in range(0, retries):
try:
with connect(
host=host,
user=user,
password=password,
) as connection:
with connection.cursor() as cursor:
cursor.execute(query)
for (db) in cursor:
logger.debug(db)
text = text + str(db[0]) + ", "
return 0, text[0:len(text)-2]
except Error as e:
text = str(e)
logger.debug("Error: {}".format(e))
time.sleep(3)
continue
return -1, text