38 lines
1.1 KiB
Python
Executable File
38 lines
1.1 KiB
Python
Executable File
"""Misc helper functions for seafile mirror"""
|
|
|
|
import logging
|
|
import socket
|
|
import sys
|
|
|
|
|
|
def get_lock(process_name):
|
|
"""Get the lock for this program to avoid double-execution"""
|
|
# Without holding a reference to our socket somewhere it gets garbage
|
|
# collected when the function exits
|
|
# pylint: disable=protected-access
|
|
get_lock._lock_socket = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
|
|
|
|
try:
|
|
# The null byte (\0) means the socket is created
|
|
# in the abstract namespace instead of being created
|
|
# on the file system itself.
|
|
# Works only in Linux
|
|
# pylint: disable=protected-access
|
|
get_lock._lock_socket.bind("\0" + process_name)
|
|
except socket.error:
|
|
logging.critical("This script is already executed in another instance. Abort.")
|
|
sys.exit(1)
|
|
|
|
|
|
def findstring(text, string):
|
|
"""Check if a certain string exists in an output"""
|
|
if text.find(string) >= 0:
|
|
return True
|
|
|
|
return False
|
|
|
|
|
|
def countlines(string: str) -> int:
|
|
"""Count number of lines in a variable"""
|
|
return len(string.splitlines())
|