def acquire(self):
""" Acquire thread and file locks. Re-opening log for 'degraded' mode.
"""
self._console_log("In acquire", stack=True)
# handle thread lock
super(ConcurrentRotatingFileHandler, self).acquire()
# noinspection PyBroadException
try:
self._open_lockfile()
except Exception:
self.handleError(NullLogRecord())
# Issue a file lock. (This is inefficient for multiple active threads
# within a single process. But if you're worried about high-performance,
# you probably aren't using this log handler.)
self._stream_lock_count += 1
self._console_log(">> stream_lock_count = %s" % (self._stream_lock_count,))
if self._stream_lock_count == 1:
self._console_log(">Getting lock for %s" % (self.stream_lock,), stack=True)
lock(self.stream_lock, LOCK_EX)
self.stream = self._open()
def _do_lock(self):
if self.stream_lock:
lock(self.stream_lock, LOCK_EX)
else:
self._console_log("No self.stream_lock to lock", stack=True)