def reinitialize_server(self):
"""Reset the server state."""
logging.info("Invalidating the web cache.")
from fle_utils.internet.webcache import invalidate_web_cache
invalidate_web_cache()
# Next, call videoscan.
logging.info("Running videoscan.")
call_command("videoscan")
# Finally, pre-load global data
initialize_content_caches()
def reinitialize_server(self):
"""Reset the server state."""
logging.info("Invalidating the web cache.")
from fle_utils.internet.webcache import invalidate_web_cache
invalidate_web_cache()
# Next, call videoscan.
logging.info("Running videoscan.")
call_command("videoscan")
# Finally, pre-load global data
def preload_global_data():
logging.info("Preloading topic data.")
stamp_availability_on_topic(get_topic_tree(), force=True, stamp_urls=True)
preload_global_data()
def delete_language(lang_code):
langpack_resource_paths = [ get_localized_exercise_dirpath(lang_code), get_subtitle_file_path(lang_code), get_locale_path(lang_code) ]
for langpack_resource_path in langpack_resource_paths:
try:
shutil.rmtree(langpack_resource_path)
logging.info("Deleted language pack resource path: %s" % langpack_resource_path)
except OSError as e:
if e.errno != 2: # Only ignore error: No Such File or Directory
raise
else:
logging.debug("Not deleting missing language pack resource path: %s" % langpack_resource_path)
invalidate_web_cache()
def delete_language(lang_code):
langpack_resource_paths = [get_localized_exercise_dirpath(lang_code), get_subtitle_file_path(lang_code), get_locale_path(lang_code)]
for langpack_resource_path in langpack_resource_paths:
try:
shutil.rmtree(langpack_resource_path)
logging.info("Deleted language pack resource path: %s" % langpack_resource_path)
except OSError as e:
if e.errno != 2: # Only ignore error: No Such File or Directory
raise
else:
logging.debug("Not deleting missing language pack resource path: %s" % langpack_resource_path)
invalidate_web_cache()
def reinitialize_server(self):
"""Reset the server state."""
logging.info("Invalidating the web cache.")
from fle_utils.internet.webcache import invalidate_web_cache
invalidate_web_cache()
# Next, call videoscan.
logging.info("Running videoscan.")
call_command("videoscan")
# Finally, pre-load global data
def preload_global_data():
logging.info("Preloading topic data.")
stamp_availability_on_topic(get_topic_tree(),
force=True,
stamp_urls=True)
preload_global_data()
def invalidate_all_caches():
"""
Basic entry-point for clearing necessary caches. Most functions can
call in here.
"""
invalidate_inmemory_caches()
if DO_NOT_RELOAD_CONTENT_CACHE_AT_STARTUP:
# The underlying assumption here is that if generating in memory caches is too onerous a task to conduct
# at every system start up, then it is too onerous a task to conduct during server operation.
# We defer the regeneration of these caches to next system startup, by deleting the existing disk based
# copies of these caches.
# This will prompt the caches to be recreated at next system start up, and the disk based copies to be rewritten.
for filename in glob.glob(os.path.join(settings.CHANNEL_DATA_PATH, "*.cache")):
os.remove(filename)
else:
initialize_content_caches(force=True)
if caching_is_enabled():
invalidate_web_cache()
logging.debug("Great success emptying all caches.")
def invalidate_all_caches():
"""
Basic entry-point for clearing necessary caches. Most functions can
call in here.
"""
invalidate_inmemory_caches()
if DO_NOT_RELOAD_CONTENT_CACHE_AT_STARTUP:
# The underlying assumption here is that if generating in memory caches is too onerous a task to conduct
# at every system start up, then it is too onerous a task to conduct during server operation.
# We defer the regeneration of these caches to next system startup, by deleting the existing disk based
# copies of these caches.
# This will prompt the caches to be recreated at next system start up, and the disk based copies to be rewritten.
for filename in glob.glob(os.path.join(CHANNEL_DATA_PATH, "*.cache")) + [CONTENT_CACHE_FILEPATH]:
os.remove(filename)
elif sys.platform != 'darwin':
# Macs have to run video download in a subprocess, and as this is only ever called during runtime from
# video download or the videoscan subprocess, this never actually affects variables in the main KA Lite thread.
initialize_content_caches(force=True)
if caching_is_enabled():
invalidate_web_cache()
logging.debug("Great success emptying all caches.")
def delete_language(lang_code):
langpack_resource_paths = [get_subtitle_file_path(lang_code), get_locale_path(lang_code)]
for langpack_resource_path in langpack_resource_paths:
try:
shutil.rmtree(langpack_resource_path)
logger.info("Deleted language pack resource path: %s" % langpack_resource_path)
except OSError as e:
if e.errno != 2: # Only ignore error: No Such File or Directory
raise
else:
logger.debug("Not deleting missing language pack resource path: %s" % langpack_resource_path)
# Delete the content db of particular language
content_db = CONTENT_DATABASE_PATH.format(channel="khan", language=lang_code)
if os.path.isfile(content_db):
try:
os.unlink(content_db)
except OSError as e:
if e.errno != 2: # Only ignore error: No Such File or Directory
raise
invalidate_web_cache()
def invalidate_all_caches():
"""
Basic entry-point for clearing necessary caches. Most functions can
call in here.
"""
invalidate_inmemory_caches()
if DO_NOT_RELOAD_CONTENT_CACHE_AT_STARTUP:
# The underlying assumption here is that if generating in memory caches is too onerous a task to conduct
# at every system start up, then it is too onerous a task to conduct during server operation.
# We defer the regeneration of these caches to next system startup, by deleting the existing disk based
# copies of these caches.
# This will prompt the caches to be recreated at next system start up, and the disk based copies to be rewritten.
for filename in glob.glob(os.path.join(
CHANNEL_DATA_PATH, "*.cache")) + [CONTENT_CACHE_FILEPATH]:
os.remove(filename)
elif sys.platform != 'darwin':
# Macs have to run video download in a subprocess, and as this is only ever called during runtime from
# video download or the videoscan subprocess, this never actually affects variables in the main KA Lite thread.
initialize_content_caches(force=True)
if caching_is_enabled():
invalidate_web_cache()
logging.debug("Great success emptying all caches.")
def clear_web_cache(self):
invalidate_web_cache()
logging.info("Cleared the web cache.")
def clear_web_cache(self):
invalidate_web_cache()
logging.info("Cleared the web cache.")
