Integrate persistent cache with "var_dir" conf option

[mpd-sima.git] / sima / lib / httpcli / filelock.py

diff --git a/sima/lib/httpcli/filelock.py b/sima/lib/httpcli/filelock.py
deleted file mode 100644 (file)
index 6dc331b..0000000
--- a/sima/lib/httpcli/filelock.py
+++ /dev/null
@@ -1,80 +0,0 @@
-# -*- coding: utf-8 -*-\r
-# https://github.com/dmfrey/FileLock\r
-\r
-import os\r
-import time\r
-import errno\r
-\r
-class FileLockException(Exception):\r
-    pass\r
-\r
-class FileLock:\r
-    """ A file locking mechanism that has context-manager support so\r
-        you can use it in a with statement. This should be relatively cross\r
-        compatible as it doesn't rely on msvcrt or fcntl for the locking.\r
-    """\r
-\r
-    def __init__(self, file_name, timeout=10, delay=.05):\r
-        """ Prepare the file locker. Specify the file to lock and optionally\r
-            the maximum timeout and the delay between each attempt to lock.\r
-        """\r
-        self.is_locked = False\r
-        self.lockfile = os.path.join(os.getcwd(), "%s.lock" % file_name)\r
-        self.file_name = file_name\r
-        self.timeout = timeout\r
-        self.delay = delay\r
-\r
-\r
-    def acquire(self):\r
-        """ Acquire the lock, if possible. If the lock is in use, it check again\r
-            every `wait` seconds. It does this until it either gets the lock or\r
-            exceeds `timeout` number of seconds, in which case it throws\r
-            an exception.\r
-        """\r
-        start_time = time.time()\r
-        while True:\r
-            try:\r
-                self.fd = os.open(self.lockfile, os.O_CREAT|os.O_EXCL|os.O_RDWR)\r
-                break;\r
-            except OSError as e:\r
-                if e.errno != errno.EEXIST:\r
-                    raise\r
-                if (time.time() - start_time) >= self.timeout:\r
-                    raise FileLockException("Timeout occured.")\r
-                time.sleep(self.delay)\r
-        self.is_locked = True\r
-\r
-\r
-    def release(self):\r
-        """ Get rid of the lock by deleting the lockfile.\r
-            When working in a `with` statement, this gets automatically\r
-            called at the end.\r
-        """\r
-        if self.is_locked:\r
-            os.close(self.fd)\r
-            os.unlink(self.lockfile)\r
-            self.is_locked = False\r
-\r
-\r
-    def __enter__(self):\r
-        """ Activated when used in the with statement.\r
-            Should automatically acquire a lock to be used in the with block.\r
-        """\r
-        if not self.is_locked:\r
-            self.acquire()\r
-        return self\r
-\r
-\r
-    def __exit__(self, type, value, traceback):\r
-        """ Activated at the end of the with statement.\r
-            It automatically releases the lock if it isn't locked.\r
-        """\r
-        if self.is_locked:\r
-            self.release()\r
-\r
-\r
-    def __del__(self):\r
-        """ Make sure that the FileLock instance doesn't leave a lockfile\r
-            lying around.\r
-        """\r
-        self.release()\r