panni
89 lines
2.4 KiB
Python
89 lines
2.4 KiB
Python
# coding=utf-8
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import datetime
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import threading
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lock = threading.Lock()
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class TempIntent(dict):
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timeout = 1000 # milliseconds
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store = None
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def __init__(self, timeout=1000):
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self.timeout = timeout
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with lock:
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self.store = {}
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def __getattr__(self, name):
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if name in self:
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return self[name]
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def __setattr__(self, name, value):
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self[name] = value
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def __delattr__(self, name):
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if name in self:
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del self[name]
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def get(self, kind, *keys):
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with lock:
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# iter all requested keys
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for key in keys:
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hit = False
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# skip key if invalid
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if not key:
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continue
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# valid kind?
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if kind in self["store"]:
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now = datetime.datetime.now()
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# iter all known kinds (previously created)
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for known_key in self["store"][kind].keys():
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# may need locking, for now just play it safe
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ends = self["store"][kind].get(known_key, None)
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if not ends:
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continue
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timed_out = False
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if now > ends:
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timed_out = True
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# key and kind in storage, and not timed out = hit
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if known_key == key and not timed_out:
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hit = True
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if timed_out:
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try:
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del self["store"][kind][key]
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except:
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continue
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if hit:
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return True
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return False
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def resolve(self, kind, key):
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with lock:
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if kind in self["store"] and key in self["store"][kind]:
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del self["store"][kind][key]
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return True
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return False
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def set(self, kind, key, timeout=None):
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with lock:
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if kind not in self["store"]:
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self["store"][kind] = {}
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self["store"][kind][key] = datetime.datetime.now() + datetime.timedelta(milliseconds=timeout or self.timeout)
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def has(self, kind, key):
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with lock:
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if kind not in self["store"]:
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return False
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return key in self["store"][kind]
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intent = TempIntent()
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