def checkIteratorIsConsistent(self):
# History free iterators should be consistent
# until a sync() is done.
# https://github.com/zodb/relstorage/issues/344
root = Root()
self._dostoreNP(ZERO, data=dumps(root))
storage = self._storage
it = self._storage.iterator()
self.assertEqual(1, len(it))
it.close()
obj1 = self._newobj()
oid1 = obj1.getoid()
storage2 = self._storage.new_instance()
self._storage = storage2
self._dostoreNP(oid1, data=dumps(obj1))
self._storage = storage
it2 = storage2.iterator()
self.assertEqual(2, len(it2))
it2.close()
it = self._storage.iterator()
self.assertEqual(1, len(it))
it.close()
self._storage.sync()
it = self._storage.iterator()
self.assertEqual(2, len(it))
it.close()
storage2.close()
def checkPackJustOldRevisions(self):
eq = self.assertEqual
raises = self.assertRaises
loads = self._makeloader()
# Create a root object. This can't be an instance of Object,
# otherwise the pickling machinery will serialize it as a persistent
# id and not as an object that contains references (persistent ids) to
# other objects.
root = Root()
# Create a persistent object, with some initial state
obj = self._newobj()
oid = obj.getoid()
# Link the root object to the persistent object, in order to keep the
# persistent object alive. Store the root object.
root.obj = obj
root.value = 0
revid0 = self._dostoreNP(ZERO, data=dumps(root))
# Make sure the root can be retrieved
data, revid = self._storage.load(ZERO, '')
eq(revid, revid0)
eq(loads(data).value, 0)
# Commit three different revisions of the other object
obj.value = 1
revid1 = self._dostoreNP(oid, data=pdumps(obj))
obj.value = 2
revid2 = self._dostoreNP(oid, revid=revid1, data=pdumps(obj))
obj.value = 3
revid3 = self._dostoreNP(oid, revid=revid2, data=pdumps(obj))
# Now make sure only the latest revision can be extracted
raises(KeyError, self._storage.loadSerial, oid, revid1)
raises(KeyError, self._storage.loadSerial, oid, revid2)
data = self._storage.loadSerial(oid, revid3)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid)
eq(pobj.value, 3)
# Now pack. The object should stay alive because it's pointed
# to by the root.
now = packtime = time.time()
while packtime <= now:
packtime = time.time()
self._storage.pack(packtime, referencesf)
# Make sure the revisions are gone, but that object zero and revision
# 3 are still there and correct
data, revid = self._storage.load(ZERO, '')
eq(revid, revid0)
eq(loads(data).value, 0)
raises(KeyError, self._storage.loadSerial, oid, revid1)
raises(KeyError, self._storage.loadSerial, oid, revid2)
data = self._storage.loadSerial(oid, revid3)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid)
eq(pobj.value, 3)
data, revid = self._storage.load(oid, '')
eq(revid, revid3)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid)
eq(pobj.value, 3)
def checkPackJustOldRevisions(self):
eq = self.assertEqual
raises = self.assertRaises
loads = self._makeloader()
# Create a root object. This can't be an instance of Object,
# otherwise the pickling machinery will serialize it as a persistent
# id and not as an object that contains references (persistent ids) to
# other objects.
root = Root()
# Create a persistent object, with some initial state
obj = self._newobj()
oid = obj.getoid()
# Link the root object to the persistent object, in order to keep the
# persistent object alive. Store the root object.
root.obj = obj
root.value = 0
revid0 = self._dostoreNP(ZERO, data=dumps(root))
# Make sure the root can be retrieved
data, revid = self._storage.load(ZERO, '')
eq(revid, revid0)
eq(loads(data).value, 0)
# Commit three different revisions of the other object
obj.value = 1
revid1 = self._dostoreNP(oid, data=pdumps(obj))
obj.value = 2
revid2 = self._dostoreNP(oid, revid=revid1, data=pdumps(obj))
obj.value = 3
revid3 = self._dostoreNP(oid, revid=revid2, data=pdumps(obj))
# Now make sure only the latest revision can be extracted
raises(KeyError, self._storage.loadSerial, oid, revid1)
raises(KeyError, self._storage.loadSerial, oid, revid2)
data = self._storage.loadSerial(oid, revid3)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid)
eq(pobj.value, 3)
# Now pack. The object should stay alive because it's pointed
# to by the root.
now = packtime = time.time()
while packtime <= now:
packtime = time.time()
self._storage.pack(packtime, referencesf)
# Make sure the revisions are gone, but that object zero and revision
# 3 are still there and correct
data, revid = self._storage.load(ZERO, '')
eq(revid, revid0)
eq(loads(data).value, 0)
raises(KeyError, self._storage.loadSerial, oid, revid1)
raises(KeyError, self._storage.loadSerial, oid, revid2)
data = self._storage.loadSerial(oid, revid3)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid)
eq(pobj.value, 3)
data, revid = self._storage.load(oid, '')
eq(revid, revid3)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid)
eq(pobj.value, 3)
def checkPackOnlyOneObject(self):
eq = self.assertEqual
raises = self.assertRaises
loads = self._makeloader()
# Create a root object. This can't be an instance of Object,
# otherwise the pickling machinery will serialize it as a persistent
# id and not as an object that contains references (persistent ids) to
# other objects.
root = Root()
# Create a persistent object, with some initial state
obj1 = self._newobj()
oid1 = obj1.getoid()
# Create another persistent object, with some initial state.
obj2 = self._newobj()
oid2 = obj2.getoid()
# Link the root object to the persistent objects, in order to keep
# them alive. Store the root object.
root.obj1 = obj1
root.obj2 = obj2
root.value = 0
revid0 = self._dostoreNP(ZERO, data=dumps(root))
# Make sure the root can be retrieved
data, revid = self._storage.load(ZERO, '')
eq(revid, revid0)
eq(loads(data).value, 0)
# Commit three different revisions of the first object
obj1.value = 1
revid1 = self._dostoreNP(oid1, data=pdumps(obj1))
obj1.value = 2
revid2 = self._dostoreNP(oid1, revid=revid1, data=pdumps(obj1))
obj1.value = 3
revid3 = self._dostoreNP(oid1, revid=revid2, data=pdumps(obj1))
# Now make sure only the latest revision can be extracted
raises(KeyError, self._storage.loadSerial, oid1, revid1)
raises(KeyError, self._storage.loadSerial, oid1, revid2)
data = self._storage.loadSerial(oid1, revid3)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid1)
eq(pobj.value, 3)
# Now commit a revision of the second object
obj2.value = 11
revid4 = self._dostoreNP(oid2, data=pdumps(obj2))
# And make sure the revision can be extracted
data = self._storage.loadSerial(oid2, revid4)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid2)
eq(pobj.value, 11)
# Now pack just revisions 1 and 2 of object1. Object1's current
# revision should stay alive because it's pointed to by the root, as
# should Object2's current revision.
now = packtime = time.time()
while packtime <= now:
packtime = time.time()
self._storage.pack(packtime, referencesf)
# Make sure the revisions are gone, but that object zero, object2, and
# revision 3 of object1 are still there and correct.
data, revid = self._storage.load(ZERO, '')
eq(revid, revid0)
eq(loads(data).value, 0)
raises(KeyError, self._storage.loadSerial, oid1, revid1)
raises(KeyError, self._storage.loadSerial, oid1, revid2)
data = self._storage.loadSerial(oid1, revid3)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid1)
eq(pobj.value, 3)
data, revid = self._storage.load(oid1, '')
eq(revid, revid3)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid1)
eq(pobj.value, 3)
data, revid = self._storage.load(oid2, '')
eq(revid, revid4)
eq(loads(data).value, 11)
data = self._storage.loadSerial(oid2, revid4)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid2)
eq(pobj.value, 11)
def checkPackOnlyOneObject(self):
eq = self.assertEqual
raises = self.assertRaises
loads = self._makeloader()
# Create a root object. This can't be an instance of Object,
# otherwise the pickling machinery will serialize it as a persistent
# id and not as an object that contains references (persistent ids) to
# other objects.
root = Root()
# Create a persistent object, with some initial state
obj1 = self._newobj()
oid1 = obj1.getoid()
# Create another persistent object, with some initial state.
obj2 = self._newobj()
oid2 = obj2.getoid()
# Link the root object to the persistent objects, in order to keep
# them alive. Store the root object.
root.obj1 = obj1
root.obj2 = obj2
root.value = 0
revid0 = self._dostoreNP(ZERO, data=dumps(root))
# Make sure the root can be retrieved
data, revid = self._storage.load(ZERO, '')
eq(revid, revid0)
eq(loads(data).value, 0)
# Commit three different revisions of the first object
obj1.value = 1
revid1 = self._dostoreNP(oid1, data=pdumps(obj1))
obj1.value = 2
revid2 = self._dostoreNP(oid1, revid=revid1, data=pdumps(obj1))
obj1.value = 3
revid3 = self._dostoreNP(oid1, revid=revid2, data=pdumps(obj1))
# Now make sure only the latest revision can be extracted
raises(KeyError, self._storage.loadSerial, oid1, revid1)
raises(KeyError, self._storage.loadSerial, oid1, revid2)
data = self._storage.loadSerial(oid1, revid3)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid1)
eq(pobj.value, 3)
# Now commit a revision of the second object
obj2.value = 11
revid4 = self._dostoreNP(oid2, data=pdumps(obj2))
# And make sure the revision can be extracted
data = self._storage.loadSerial(oid2, revid4)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid2)
eq(pobj.value, 11)
# Now pack just revisions 1 and 2 of object1. Object1's current
# revision should stay alive because it's pointed to by the root, as
# should Object2's current revision.
now = packtime = time.time()
while packtime <= now:
packtime = time.time()
self._storage.pack(packtime, referencesf)
# Make sure the revisions are gone, but that object zero, object2, and
# revision 3 of object1 are still there and correct.
data, revid = self._storage.load(ZERO, '')
eq(revid, revid0)
eq(loads(data).value, 0)
raises(KeyError, self._storage.loadSerial, oid1, revid1)
raises(KeyError, self._storage.loadSerial, oid1, revid2)
data = self._storage.loadSerial(oid1, revid3)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid1)
eq(pobj.value, 3)
data, revid = self._storage.load(oid1, '')
eq(revid, revid3)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid1)
eq(pobj.value, 3)
data, revid = self._storage.load(oid2, '')
eq(revid, revid4)
eq(loads(data).value, 11)
data = self._storage.loadSerial(oid2, revid4)
pobj = cPickle.loads(data)
eq(pobj.getoid(), oid2)
eq(pobj.value, 11)
