1179b39b5SBrad Bishop# Contributors Listed Below - COPYRIGHT 2016 2179b39b5SBrad Bishop# [+] International Business Machines Corp. 3179b39b5SBrad Bishop# 4179b39b5SBrad Bishop# 5179b39b5SBrad Bishop# Licensed under the Apache License, Version 2.0 (the "License"); 6179b39b5SBrad Bishop# you may not use this file except in compliance with the License. 7179b39b5SBrad Bishop# You may obtain a copy of the License at 8179b39b5SBrad Bishop# 9179b39b5SBrad Bishop# http://www.apache.org/licenses/LICENSE-2.0 10179b39b5SBrad Bishop# 11179b39b5SBrad Bishop# Unless required by applicable law or agreed to in writing, software 12179b39b5SBrad Bishop# distributed under the License is distributed on an "AS IS" BASIS, 13179b39b5SBrad Bishop# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 14179b39b5SBrad Bishop# implied. See the License for the specific language governing 15179b39b5SBrad Bishop# permissions and limitations under the License. 16179b39b5SBrad Bishop 17179b39b5SBrad Bishopimport os 18179b39b5SBrad Bishopimport cPickle 19179b39b5SBrad Bishopimport json 20179b39b5SBrad Bishop 21179b39b5SBrad BishopCACHE_PATH = '/var/cache/obmc/' 22179b39b5SBrad Bishop 23179b39b5SBrad Bishop 24179b39b5SBrad Bishopdef getCacheFilename(obj_path, iface_name): 25179b39b5SBrad Bishop name = obj_path.replace('/', '.') 26179b39b5SBrad Bishop filename = CACHE_PATH+name[1:]+"@"+iface_name+".props" 27179b39b5SBrad Bishop return filename 28179b39b5SBrad Bishop 29179b39b5SBrad Bishop 30179b39b5SBrad Bishopdef save(obj_path, iface_name, properties): 31179b39b5SBrad Bishop print "Caching: "+obj_path 32179b39b5SBrad Bishop filename = getCacheFilename(obj_path, iface_name) 33d637227aSBrad Bishop parent = os.path.dirname(filename) 34d637227aSBrad Bishop try: 35d637227aSBrad Bishop if not os.path.exists(parent): 36d637227aSBrad Bishop os.makedirs(parent) 37*0127d51cSBrad Bishop with open(filename, 'wb') as output: 38179b39b5SBrad Bishop try: 39179b39b5SBrad Bishop ## use json module to convert dbus datatypes 40179b39b5SBrad Bishop props = json.dumps(properties[iface_name]) 41179b39b5SBrad Bishop prop_obj = json.loads(props) 42179b39b5SBrad Bishop cPickle.dump(prop_obj, output) 43179b39b5SBrad Bishop except Exception as e: 44179b39b5SBrad Bishop print "ERROR: "+str(e) 45179b39b5SBrad Bishop except: 46179b39b5SBrad Bishop print "ERROR opening cache file: "+filename 47179b39b5SBrad Bishop 48179b39b5SBrad Bishop 49179b39b5SBrad Bishopdef load(obj_path, iface_name, properties): 50179b39b5SBrad Bishop ## overlay with pickled data 51179b39b5SBrad Bishop filename = getCacheFilename(obj_path, iface_name) 52179b39b5SBrad Bishop if (os.path.isfile(filename)): 53179b39b5SBrad Bishop if iface_name in properties: 54179b39b5SBrad Bishop properties[iface_name] = {} 55179b39b5SBrad Bishop print "Loading from cache: "+filename 56179b39b5SBrad Bishop try: 57179b39b5SBrad Bishop p = open(filename, 'rb') 58179b39b5SBrad Bishop data = cPickle.load(p) 59179b39b5SBrad Bishop for prop in data.keys(): 60179b39b5SBrad Bishop properties[iface_name][prop] = data[prop] 61179b39b5SBrad Bishop 62179b39b5SBrad Bishop except Exception as e: 63179b39b5SBrad Bishop print "ERROR: Loading cache file: " + str(e) 64179b39b5SBrad Bishop finally: 65179b39b5SBrad Bishop p.close() 66