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# Copyright 2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-src/portage/pym/Attic/portage_db_template.py,v 1.11.2.1 2005/01/16 02:35:33 carpaski Exp $
cvs_id_string="$Id: portage_db_template.py,v 1.11.2.1 2005/01/16 02:35:33 carpaski Exp $"[5:-2]
import os.path,string
from portage_util import getconfig, ReadOnlyConfig
from portage_exception import CorruptionError
class database:
def __init__(self,path,category,dbkeys,uid,gid,config_path="/etc/portage/module_configs/"):
self.__cacheArray = [None, None, None]
self.__cacheKeyArray = [None, None, None]
self.__template_init_called = True
self.path = path
self.category = category
self.dbkeys = dbkeys
self.uid = uid
self.gid = gid
self.config = None
self.__load_config(config_path)
self.module_init()
def getModuleName(self):
return self.__module__+"."+self.__class__.__name__[:]
def __load_config(self,config_path):
config_file = config_path + "/" + self.getModuleName()
self.config = ReadOnlyConfig(config_file)
def __check_init(self):
try:
if self.__template_init_called:
pass
except SystemExit, e:
raise
except:
raise NotImplementedError("db_template.__init__ was overridden")
def check_key(self,key):
if (not key) or not isinstance(key, str):
raise KeyError, "No key provided. key: %s" % (key)
def clear(self):
for x in self.keys():
self.del_key(x)
def __addCache(self,key,val):
del self.__cacheArray[2]
self.__cacheArray.insert(0,val)
del self.__cacheKeyArray[2]
self.__cacheKeyArray.insert(0,key)
def __delCache(self,key):
i = self.__cacheKeyArray.index(key)
self.__cacheArray[i] = None
self.__cacheKeyArray[i] = None
def flushCache(self):
self.__cacheArray = [None, None, None]
self.__cacheKeyArray = [None, None, None]
def __getitem__(self,key):
if key in self.__cacheKeyArray:
i = self.__cacheKeyArray.index(key)
return self.__cacheArray[i]
self.check_key(key)
if self.has_key(key):
try:
values = self.get_values(key)
self.__addCache(key,values)
return values
except SystemExit, e:
raise
except Exception, e:
raise CorruptionError("Corruption detected when reading key '%s': %s" % (key,str(e)))
raise KeyError("Key not in db: '%s'" % (key))
def __setitem__(self,key,values):
self.check_key(key)
self.__addCache(key,values)
return self.set_values(key,values)
def __delitem__(self,key):
self.__delCache(key)
return self.del_key(key)
def has_key(self,key):
raise NotImplementedError("Method not defined")
def keys(self):
raise NotImplementedError("Method not defined")
def get_values(self,key):
raise NotImplementedError("Method not defined")
def set_values(self,key,val):
raise NotImplementedError("Method not defined")
def del_key(self,key):
raise NotImplementedError("Method not defined")
def sync(self):
raise NotImplementedError("Method not defined")
def close(self):
raise NotImplementedError("Method not defined")
def test_database(db_class,path,category,dbkeys,uid,gid):
if "_mtime_" not in dbkeys:
dbkeys+=["_mtime_"]
d = db_class(path,category,dbkeys,uid,gid)
print "Module: "+str(d.__module__)
# XXX: Need a way to do this that actually works.
for x in dir(database):
if x not in dir(d):
print "FUNCTION MISSING:",str(x)
list = d.keys()
if(len(list) == 0):
values = {}
for x in dbkeys:
values[x] = x[:]
values["_mtime_"] = "1079903037"
d.set_values("test-2.2.3-r1", values)
d.set_values("test-2.2.3-r2", values)
d.set_values("test-2.2.3-r3", values)
d.set_values("test-2.2.3-r4", values)
list = d.keys()
print "Key count:",len(list)
values = d.get_values(list[0])
print "value count:",len(values)
mykey = "foobar-1.2.3-r4"
d.check_key(mykey)
d.set_values(mykey, values)
d.sync()
del d
d = db_class(path,category,dbkeys,uid,gid)
new_vals = d.get_values(mykey)
if dbkeys and new_vals:
for x in dbkeys:
if x not in new_vals.keys():
print "---",x
for x in new_vals.keys():
if x not in dbkeys:
print "+++",x
else:
print "Mismatched:",dbkeys,new_vals
d.del_key(mykey)
print "Should be None:",d.get_values(mykey)
d.clear()
d.sync
d.close
del d
print "Done."
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