def get(self, key):
try:
path = self._getFilePath(key, False)
if not os.path.exists(path):
return None
f = open(path, 'rb')
OSSpecific.lockFile(f, 'LOCK_SH')
expiry = val = None
try:
expiry, val = pickle.load(f)
finally:
OSSpecific.lockFile(f, 'LOCK_UN')
f.close()
if expiry and time.time() > expiry:
return None
except (IOError, OSError):
Logger.get('cache.files').exception('Error getting cached value')
return None
except (EOFError, pickle.UnpicklingError):
Logger.get('cache.files').exception(
'Cached information seems corrupted. Overwriting it.')
return None
return val
def set(self, key, val, ttl=0):
try:
f = open(self._getFilePath(key), 'wb')
OSSpecific.lockFile(f, 'LOCK_EX')
try:
expiry = int(time.time()) + ttl if ttl else None
data = (expiry, val)
pickle.dump(data, f)
finally:
OSSpecific.lockFile(f, 'LOCK_UN')
f.close()
except (IOError, OSError):
Logger.get('cache.files').exception('Error setting value in cache')
return 0
return 1
def set(self, key, val, ttl=0):
try:
f = open(self._getFilePath(key), 'wb')
OSSpecific.lockFile(f, 'LOCK_EX')
try:
expiry = int(time.time()) + ttl if ttl else None
data = (expiry, val)
pickle.dump(data, f)
finally:
OSSpecific.lockFile(f, 'LOCK_UN')
f.close()
except (IOError, OSError):
Logger.get('cache.files').exception('Error setting value in cache')
return 0
return 1
def get(self, key):
try:
path = self._getFilePath(key, False)
if not os.path.exists(path):
return None
f = open(path, 'rb')
OSSpecific.lockFile(f, 'LOCK_SH')
expiry = val = None
try:
expiry, val = pickle.load(f)
finally:
OSSpecific.lockFile(f, 'LOCK_UN')
f.close()
if expiry and time.time() > expiry:
return None
except (IOError, OSError):
Logger.get('cache.files').exception('Error getting cached value')
return None
except (EOFError, pickle.UnpicklingError):
Logger.get('cache.files').exception('Cached information seems corrupted. Overwriting it.')
return None
return val
