def load(self):
""" Load caches from specified file """
# Nothing to do when persistent caching is off
if not self._filename or get_cache_level() < config.CACHE_PERSISTENT:
return
# Load the saved cache from file
try:
log.debug("Loading persistent cache from {0}".format(
self._filename))
input_file = gzip.open(self._filename, 'rb')
data = pickle.load(input_file)
input_file.close()
except EOFError:
log.cache("Cache file empty, will fill it upon exit")
return
except (IOError, zlib.error), error:
if getattr(error, "errno", None) == 2:
log.warn("Cache file not found, will create one on exit")
return
else:
log.error("Failed to load the cache ({0})".format(error))
log.warn("Going on but switching to the CACHE_OBJECTS level")
set_cache_level(config.CACHE_OBJECTS)
self.unlock()
return
def load(self):
""" Load caches from specified file """
# Nothing to do when persistent caching is off
if not self._filename or get_cache_level() < config.CACHE_PERSISTENT:
return
# Load the saved cache from file
try:
log.debug("Loading persistent cache from {0}".format(
self._filename))
input_file = gzip.open(self._filename, 'rb')
data = pickle.load(input_file)
input_file.close()
except EOFError:
log.cache("Cache file empty, will fill it upon exit")
return
except (IOError, zlib.error) as error:
if getattr(error, "errno", None) == 2:
log.warn("Cache file not found, will create one on exit")
return
else:
log.error("Failed to load the cache ({0})".format(error))
log.warn("Going on but switching to the CACHE_OBJECTS level")
set_cache_level(config.CACHE_OBJECTS)
self.unlock()
return
# Restore cache for immutable & mutable classes first
for current_class in self._immutable + self._mutable:
try:
log.cache("Loading cache for {0}".format(
current_class.__name__))
current_class._cache = data[current_class.__name__]
except KeyError:
log.cache("Failed to load cache for {0}, starting "
"with empty".format(current_class.__name__))
current_class._cache = {}
# Containers to be loaded last (to prevent object duplicates)
for current_class in self._containers:
try:
log.cache("Loading cache for {0}".format(
current_class.__name__))
current_class._cache = data[current_class.__name__]
except KeyError:
log.cache("Failed to load cache for {0}, starting "
"with empty".format(current_class.__name__))
current_class._cache = {}
# Wake up container objects from the id-sleep
for container in current_class._cache.values():
container._wake()
# Clear expired items and give a short summary for debugging
self.expire()
log.cache("Cache restore stats:\n" + self.stats().strip())
def load(self):
""" Load caches from specified file """
# Nothing to do when persistent caching is off
if not self._filename or get_cache_level() < config.CACHE_PERSISTENT:
return
# Load the saved cache from file
try:
log.debug("Loading persistent cache from {0}".format(
self._filename))
input_file = gzip.open(self._filename, 'rb')
data = pickle.load(input_file)
input_file.close()
except EOFError:
log.cache("Cache file empty, will fill it upon exit")
return
except (IOError, zlib.error) as error:
if getattr(error, "errno", None) == 2:
log.warn("Cache file not found, will create one on exit")
return
else:
log.error("Failed to load the cache ({0})".format(error))
log.warn("Going on but switching to the CACHE_OBJECTS level")
set_cache_level(config.CACHE_OBJECTS)
self.unlock()
return
# Restore cache for immutable & mutable classes first
for current_class in self._immutable + self._mutable:
try:
log.cache("Loading cache for {0}".format(
current_class.__name__))
current_class._cache = data[current_class.__name__]
except KeyError:
log.cache("Failed to load cache for {0}, starting "
"with empty".format(current_class.__name__))
current_class._cache = {}
# Containers to be loaded last (to prevent object duplicates)
for current_class in self._containers:
try:
log.cache("Loading cache for {0}".format(
current_class.__name__))
current_class._cache = data[current_class.__name__]
except KeyError:
log.cache("Failed to load cache for {0}, starting "
"with empty".format(current_class.__name__))
current_class._cache = {}
# Wake up container objects from the id-sleep
for container in current_class._cache.itervalues():
container._wake()
# Clear expired items and give a short summary for debugging
self.expire()
log.cache("Cache restore stats:\n" + self.stats().strip())
