restic-compose-backup/src/restic_compose_backup/commands.py

92 lines
2.1 KiB
Python

import logging
from typing import List, Tuple
from subprocess import Popen, PIPE
logger = logging.getLogger(__name__)
def test():
return run(['ls', '/volumes'])
def ping_mysql(host, port, username) -> int:
"""Check if the mysql is up and can be reached"""
return run([
'mysqladmin',
'ping',
'--host',
host,
'--port',
port,
'--user',
username,
])
def ping_mariadb(host, port, username) -> int:
"""Check if the mariadb is up and can be reached"""
return run([
'mysqladmin',
'ping',
'--host',
host,
'--port',
port,
'--user',
username,
])
def ping_postgres(host, port, username, password) -> int:
"""Check if postgres can be reached"""
return run([
"pg_isready",
f"--host={host}",
f"--port={port}",
f"--username={username}",
])
def run(cmd: List[str]) -> int:
"""Run a command with parameters"""
logger.debug('cmd: %s', ' '.join(cmd))
child = Popen(cmd, stdout=PIPE, stderr=PIPE)
stdoutdata, stderrdata = child.communicate()
if stdoutdata.strip():
log_std('stdout', stdoutdata.decode(),
logging.DEBUG if child.returncode == 0 else logging.ERROR)
if stderrdata.strip():
log_std('stderr', stderrdata.decode(), logging.ERROR)
logger.debug("returncode %s", child.returncode)
return child.returncode
def run_capture_std(cmd: List[str]) -> Tuple[str, str]:
"""Run a command with parameters and return stdout, stderr"""
logger.debug('cmd: %s', ' '.join(cmd))
child = Popen(cmd, stdout=PIPE, stderr=PIPE)
return child.communicate()
def log_std(source: str, data: str, level: int):
if isinstance(data, bytes):
data = data.decode()
if not data.strip():
return
log_func = logger.debug if level == logging.DEBUG else logger.error
log_func('%s %s %s', '-' * 10, source, '-' * 10)
lines = data.split('\n')
if lines[-1] == '':
lines.pop()
for line in lines:
log_func(line)
log_func('-' * 28)