6 from util.PHPSerialize import *
7 from util.PHPUnserialize import *
9 #print >>sys.stderr, "PHPSerial db type not allowed."
15 import config as monitorconfig
18 PICKLE_PATH=monitorconfig.MONITOR_DATA_ROOT
21 def dbLoad(name, type=None):
22 return SPickle().load(name, type)
24 def dbExists(name, type=None):
25 #if self.config.debug:
26 # name = "debug.%s" % name
27 return SPickle().exists(name, type)
29 def dbDump(name, obj=None, type=None):
30 # depth of the dump is 2 now, since we're redirecting to '.dump'
31 return SPickle().dump(name, obj, type, 2)
33 def if_cached_else_refresh(cond, refresh, name, function, type=None):
36 if not config.debug and s.exists("production.%s" % name, type):
37 s.remove("production.%s" % name, type)
38 if config.debug and s.exists("debug.%s" % name, type):
39 s.remove("debug.%s" % name, type)
41 return if_cached_else(cond, name, function, type)
43 def if_cached_else(cond, name, function, type=None):
45 if (cond and s.exists("production.%s" % name, type)) or \
46 (cond and config.debug and s.exists("debug.%s" % name, type)):
47 o = s.load(name, type)
51 s.dump(name, o, type) # cache the object using 'name'
52 o = s.load(name, type)
53 # TODO: what if 'o' hasn't been converted...
57 def __init__(self, path=PICKLE_PATH):
60 def if_cached_else(self, cond, name, function, type=None):
61 if cond and self.exists("production.%s" % name, type):
62 o = self.load(name, type)
66 self.dump(name, o, type) # cache the object using 'name'
69 def __file(self, name, type=None):
71 return "%s/%s.pkl" % (self.path, name)
74 raise Exception("No PHPSerializer module available")
76 return "%s/%s.phpserial" % (self.path, name)
78 def exists(self, name, type=None):
79 return os.path.exists(self.__file(name, type))
81 def remove(self, name, type=None):
82 return os.remove(self.__file(name, type))
84 def load(self, name, type=None):
86 In debug mode, we should fail if neither file exists.
87 if the debug file exists, reset name
88 elif the original file exists, make a copy, reset name
89 else neither exist, raise an error
90 Otherwise, it's normal mode, if the file doesn't exist, raise error
95 if self.exists("debug.%s" % name, type):
96 name = "debug.%s" % name
97 elif self.exists("production.%s" % name, type):
98 debugname = "debug.%s" % name
99 if not self.exists(debugname, type):
100 name = "production.%s" % name
101 shutil.copyfile(self.__file(name, type), self.__file(debugname, type))
103 else: # neither exist
104 raise Exception, "No such pickle based on %s" % self.__file("debug.%s" % name, type)
106 if self.exists("production.%s" % name, type):
107 name = "production.%s" % name
108 elif self.exists(name, type):
111 raise Exception, "No such file %s" % name
115 #print traceback.print_stack()
116 #print "loading %s" % self.__file(name, type)
117 #sys.stderr.write("-----------------------------\n")
118 f = open(self.__file(name, type), 'r')
123 raise Exception("No PHPSerializer module available")
125 o = s.unserialize(f.read())
130 # use the environment to extract the data associated with the local
132 def dump(self, name, obj=None, type=None, depth=1):
134 o = inspect.getouterframes(inspect.currentframe())
135 up1 = o[depth][0] # get the frame one prior to (up from) this frame
136 argvals = inspect.getargvalues(up1)
137 # TODO: check that 'name' is a local variable; otherwise this would fail.
138 obj = argvals[3][name] # extract the local variable name 'name'
139 if not os.path.isdir("%s/" % self.path):
140 os.mkdir("%s" % self.path)
142 name = "debug.%s" % name
144 name = "production.%s" % name
145 f = open(self.__file(name, type), 'w')
150 raise Exception("No PHPSerializer module available")
152 f.write(s.serialize(obj))