mirror of https://github.com/krateng/maloja.git
51 lines
1.4 KiB
Python
51 lines
1.4 KiB
Python
from .. import database
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from . sqldb import engine
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from .dbcache import serialize
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from ..pkg_global.conf import malojaconfig
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from doreah.logging import log
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# this is a wrapper object that provides a DB connection so that one jinja page
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# (with all its included partials) can use it for all functions
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# it also translates the non-unpacked calls to unpacked calls that the DB wants
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# it also maintains a request-local cache since many webpages use the same stats
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# several times
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class JinjaDBConnection:
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def __init__(self):
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self.cache = {}
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self.hits = 0
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self.misses = 0
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def __enter__(self):
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self.conn = engine.connect()
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return self
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def __exit__(self, exc_type, exc_value, exc_traceback):
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self.conn.close()
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log(f"Generated page with {self.hits}/{self.hits+self.misses} local Cache hits",module="debug_performance")
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del self.cache
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def __getattr__(self,name):
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originalmethod = getattr(database,name)
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def packedmethod(*keys):
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kwargs = {}
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for k in keys:
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kwargs.update(k)
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if malojaconfig['USE_REQUEST_CACHE']:
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cachekey = serialize((id(originalmethod),kwargs))
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if cachekey in self.cache:
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self.hits += 1
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return self.cache[cachekey]
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else:
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self.misses += 1
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result = originalmethod(**kwargs,dbconn=self.conn)
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self.cache[cachekey] = result
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return result
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else:
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result = originalmethod(**kwargs,dbconn=self.conn)
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return result
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return packedmethod
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