3446026555
The license.txt file has been replaced with LICENSE for quite a while now. INAL but it didn't seem accurate to say "hey, checkout license.txt although there's no such file". Apart from this, there were inconsistencies in the headers altogether...this change brings consistency.
46 lines
1,020 B
Python
46 lines
1,020 B
Python
# Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
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# License: MIT. See LICENSE
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'''
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File based locking utility
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'''
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import os
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from time import time
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from frappe.utils import get_site_path, touch_file
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class LockTimeoutError(Exception):
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pass
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def create_lock(name):
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'''Creates a file in the /locks folder by the given name'''
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lock_path = get_lock_path(name)
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if not check_lock(lock_path):
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return touch_file(lock_path)
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else:
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return False
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def lock_exists(name):
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'''Returns True if lock of the given name exists'''
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return os.path.exists(get_lock_path(name))
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def check_lock(path, timeout=600):
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if not os.path.exists(path):
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return False
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if time() - os.path.getmtime(path) > timeout:
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raise LockTimeoutError(path)
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return True
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def delete_lock(name):
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lock_path = get_lock_path(name)
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try:
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os.remove(lock_path)
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except OSError:
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pass
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return True
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def get_lock_path(name):
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name = name.lower()
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locks_dir = 'locks'
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lock_path = get_site_path(locks_dir, name + '.lock')
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return lock_path
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