Files
bearhub/bauh/core/disk.py
2019-08-12 11:50:24 -03:00

76 lines
2.3 KiB
Python

import json
import os
from pathlib import Path
from threading import Thread, Lock
from typing import List, Dict
from bauh.core.model import Application
from bauh.util.cache import Cache
class DiskCacheLoader(Thread):
def __init__(self, enabled: bool, cache_map: Dict[type, Cache], apps: List[Application] = []):
super(DiskCacheLoader, self).__init__(daemon=True)
self.apps = apps
self.stop = False
self.lock = Lock()
self.cache_map = cache_map
self.enabled = enabled
def run(self):
if self.enabled:
while True:
if self.apps:
self.lock.acquire()
app = self.apps[0]
del self.apps[0]
self.lock.release()
self.fill_cached_data(app)
elif self.stop:
break
def add(self, app: Application):
if self.enabled:
if app and app.supports_disk_cache():
self.lock.acquire()
self.apps.append(app)
self.lock.release()
def fill_cached_data(self, app: Application):
if self.enabled:
if os.path.exists(app.get_disk_data_path()):
with open(app.get_disk_data_path()) as f:
cached_data = json.loads(f.read())
app.fill_cached_data(cached_data)
self.cache_map.get(app.__class__).add_non_existing(app.base_data.id, cached_data)
class DiskCacheLoaderFactory:
def __init__(self, disk_cache: bool, cache_map: Dict[type, Cache]):
self.disk_cache = disk_cache
self.cache_map = cache_map
def new(self):
return DiskCacheLoader(enabled=self.disk_cache, cache_map=self.cache_map)
def save(app: Application, icon_bytes: bytes = None, only_icon: bool = False):
if app.supports_disk_cache():
if not only_icon:
Path(app.get_disk_cache_path()).mkdir(parents=True, exist_ok=True)
data = app.get_data_to_cache()
with open(app.get_disk_data_path(), 'w+') as f:
f.write(json.dumps(data))
if icon_bytes:
Path(app.get_disk_cache_path()).mkdir(parents=True, exist_ok=True)
with open(app.get_disk_icon_path(), 'wb+') as f:
f.write(icon_bytes)