MarseyWorld/files/helpers/assetcache.py

64 lines
1.6 KiB
Python

import os
import zlib
from collections import defaultdict
import gevent
import gevent_inotifyx as inotify
from files.helpers.config.const import *
ASSET_DIR = 'files/assets'
ASSET_URL = '/assets/'
ASSET_CACHE = defaultdict(lambda: None)
ASSET_SUBDIRS = [
'/css', '/js',
'/events/shared/js',
'/events/fistmas/css', '/events/fistmas/js',
'/events/homoween/css', '/events/homoween/js',
]
new_dirs = []
for directory in ASSET_SUBDIRS:
new_dirs += [x[0].split(ASSET_DIR)[1] for x in os.walk(f'{ASSET_DIR}{directory}')]
ASSET_SUBDIRS = new_dirs
def assetcache_build(asset_dir, subdirs):
for subdir in subdirs:
for root, dirs, files in os.walk(asset_dir + subdir):
for fname in files:
fpath = root + '/' + fname
relpath = fpath[len(asset_dir) + 1:].replace('\\', '/')
with open(fpath, 'rb') as f:
fhash = zlib.crc32(f.read())
ASSET_CACHE[relpath] = '%x' % fhash
def assetcache_hash(asset_path):
return ASSET_CACHE[asset_path]
def assetcache_path(asset_path):
cachehash = assetcache_hash(asset_path)
url = ASSET_URL + asset_path
if cachehash:
url += '?x=' + cachehash
return url
def assetcache_watch_directories(asset_dir, subdirs):
fd = inotify.init()
try:
for sd in subdirs:
inotify.add_watch(fd, asset_dir + sd, inotify.IN_CLOSE_WRITE)
while True:
for event in inotify.get_events(fd, 0):
print("Rebuilding assetcache: " + event.name, flush=True)
assetcache_build(asset_dir, subdirs)
break
gevent.sleep(0.5)
finally:
os.close(fd)
assetcache_build(ASSET_DIR, ASSET_SUBDIRS)
gevent.spawn(assetcache_watch_directories, ASSET_DIR, ASSET_SUBDIRS)