Source code for API.utils
# Eve W-Space
# Copyright (C) 2013 Andrew Austin and other contributors
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version. An additional term under section
# 7 of the GPL is included in the LICENSE file.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from django.core.cache import cache
import time
import zlib
import cPickle as pickle
from datetime import datetime
import pytz
[docs]def store(host, path, params, doc, obj):
"""Store an API document in our cache."""
#First remove any outdated versions of the document.
cacheKey = "%s%s%s" %(host, path, params)
cacheTimer = obj.cachedUntil - int(time.time())
# If cacheTimer is negative or 0 (due to server clock inaccuracy)
# We will set a default cache timer of 60 seconds
if cacheTimer <= 0:
cacheTimer = 60
cache.set(hash(cacheKey), zlib.compress(pickle.dumps(obj)), cacheTimer)
[docs]def retrieve(host, path, params):
"""Get an API document from our cache."""
cacheKey = "%s%s%s" % (host, path, params)
if cache.get(hash(cacheKey)):
return pickle.loads(zlib.decompress(cache.get(hash(cacheKey))))
else:
return None
[docs]def timestamp_to_datetime(timestamp):
"""Converts a UNIX Timestamp (in UTC) to a python DateTime"""
result = datetime.fromtimestamp(timestamp).replace(tzinfo=pytz.utc)
return result