irl4you-pip/srv/util.py at main · IRL4YOU/irl4you-pip

Repository navigation

History

import json

import os

import time

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

WEB_DIR = os.path.join(BASE_DIR, "web")

def read(path, default=None):

try:

with open(path) as f:

return f.read()

except OSError:

return default

_TTL = {}

def ttl_cached(key, ttl, fn):

now = time.monotonic()

hit = _TTL.get(key)

if hit is not None and now - hit[0] < ttl:

return hit[1]

val = fn()

_TTL[key] = (now, val)

return val

def ttl_cached_drop(key):

_TTL.pop(key, None)

NOT_HANDLED = object()

_JSON = {}

JSON_MAX_AGE = 5.0

def json_file(path):

try:

st = os.stat(path)

except OSError:

_JSON.pop(path, None)

return None

sig = (st.st_mtime_ns, st.st_size, st.st_ino)

now = time.monotonic()

hit = _JSON.get(path)

if hit is not None and hit[0] == sig and now - hit[1] < JSON_MAX_AGE:

return hit[2]

try:

with open(path) as f:

val = json.load(f)

except (OSError, ValueError):

val = None

_JSON[path] = (sig, now, val)

return val

FilesExpand file tree

util.py

Latest commit

History

util.py

File metadata and controls