python-mylib/mylib/telltale.py

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2022-04-12 12:59:20 +02:00
""" Telltale files helpers """
import datetime
import logging
import os
log = logging.getLogger(__name__)
class TelltaleFile:
""" Telltale file helper class """
def __init__(self, filepath=None, filename=None, dirpath=None):
assert filepath or filename, "filename or filepath is required"
if filepath:
assert not filename or os.path.basename(filepath) == filename, "filepath and filename does not match"
assert not dirpath or os.path.dirname(filepath) == dirpath, "filepath and dirpath does not match"
self.filename = filename if filename else os.path.basename(filepath)
self.dirpath = (
dirpath if dirpath
else (
os.path.dirname(filepath) if filepath
else os.getcwd()
)
)
self.filepath = filepath if filepath else os.path.join(self.dirpath, self.filename)
@property
def last_update(self):
""" Retreive last update datetime of the telltall file """
try:
return datetime.datetime.fromtimestamp(
os.stat(self.filepath).st_mtime
)
except FileNotFoundError:
log.info('Telltale file not found (%s)', self.filepath)
return None
def update(self):
""" Update the telltale file """
log.info('Update telltale file (%s)', self.filepath)
try:
os.utime(self.filepath, None)
except FileNotFoundError:
open(self.filepath, 'a').close()
def remove(self):
""" Remove the telltale file """
try:
os.remove(self.filepath)
return True
except FileNotFoundError:
return True