ahserver_g/ahserver/filestorage.py
2023-05-29 22:58:31 +08:00

116 lines
2.8 KiB
Python
Executable File

# fileUpload.py
import asyncio
import os
import time
import tempfile
import aiofiles
import json
import time
from appPublic.folderUtils import _mkdir
from appPublic.jsonConfig import getConfig
from appPublic.Singleton import SingletonDecorator
@SingletonDecorator
class TmpFileRecord:
def __init__(self, timeout=3600):
self.filetime = {}
self.changed_flg = False
self.timeout = timeout
self.time_period = 10
self.filename = self.savefilename()
self.loop = asyncio.get_event_loop()
self.loop.call_later(0.01, self.load)
# print('TmpFileRecord() .........................')
def newtmpfile(self, path:str):
self.filetime[path] = time.time()
self.change_flg = True
def savefilename(self):
config = getConfig()
root = config.filesroot or tempfile.gettempdir()
return root + '/tmpfile_rec.json'
async def save(self):
if not self.change_flg:
return
async with aiofiles.open(self.filename, 'bw') as f:
s = json.dumps(self.filetime)
b = s.encode('utf-8')
await f.write(b)
await f.flush()
self.change_flg = False
async def load(self):
# print('load() called ............')
fn = self.filename
if not os.path.isfile(fn):
return
async with aiofiles.open(fn, 'br') as f:
b = await f.read()
s = b.decode('utf-8')
self.filetime = json.loads(s)
self.remove()
async def remove(self):
tim = time.time()
ft = {k:v for k,v in self.filetime.items()}
for k,v in ft:
if tim - v > self.timeout:
self.rmfile(k)
del self.tiletime[k]
await self.save()
self.loop.call_later(self.time_period, self.remove)
def rmfile(self, name:str):
config = getConfig()
os.remove(config.fileroot + name)
class FileStorage:
def __init__(self):
config = getConfig()
self.root = config.filesroot or tempfile.gettempdir()
self.tfr = TmpFileRecord()
def realPath(self,path):
if path[0] == '/':
path = path[1:]
p = os.path.join(self.root,path)
return p
def _name2path(self,name):
name = os.path.basename(name)
paths=[191,193,197,199,97]
v = int(time.time()*1000000)
# b = name.encode('utf8') if not isinstance(name,bytes) else name
# v = int.from_bytes(b,byteorder='big',signed=False)
path = os.path.abspath(os.path.join(self.root,
str(v % paths[0]),
str(v % paths[1]),
str(v % paths[2]),
str(v % paths[3]),
str(v % paths[4]),
name))
return path
async def save(self,name,read_data):
# print(f'FileStorage():save():{name=}')
p = self._name2path(name)
fpath = p[len(self.root):]
_mkdir(os.path.dirname(p))
async with aiofiles.open(p,'wb') as f:
siz = 0
while 1:
d = await read_data()
if not d:
break
siz += len(d);
await f.write(d)
await f.flush()
# print(f'{name=} file({fpath}) write {siz} bytes')
self.tfr.newtmpfile(fpath)
return fpath