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Joshua
zodb
Commits
9070f8e2
Commit
9070f8e2
authored
Aug 29, 2008
by
Jim Fulton
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Complain if server invalidations are applied out of order.
parent
2b62301d
Changes
2
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2 changed files
with
23 additions
and
9 deletions
+23
-9
src/ZEO/cache.py
src/ZEO/cache.py
+20
-5
src/ZEO/tests/test_cache.py
src/ZEO/tests/test_cache.py
+3
-4
No files found.
src/ZEO/cache.py
View file @
9070f8e2
...
...
@@ -555,13 +555,28 @@ class ClientCache(object):
# data for `oid`, stop believing we have current data, and mark the
# data we had as being valid only up to `tid`. In all other cases, do
# nothing.
# @param oid object id
# @param tid the id of the transaction that wrote a new revision of oid,
#
# Paramters:
#
# - oid object id
# - tid the id of the transaction that wrote a new revision of oid,
# or None to forget all cached info about oid.
# - server_invalidation, a flag indicating whether the
# invalidation has come from the server. It's possible, due
# to threading issues, that when applying a local
# invalidation after a store, that later invalidations from
# the server may already have arrived.
@
locked
def
invalidate
(
self
,
oid
,
tid
):
if
tid
>
self
.
tid
and
tid
is
not
None
:
self
.
setLastTid
(
tid
)
def
invalidate
(
self
,
oid
,
tid
,
server_invalidation
=
True
):
if
tid
is
not
None
:
if
tid
>
self
.
tid
:
self
.
setLastTid
(
tid
)
elif
tid
<
self
.
tid
:
if
server_invalidation
:
raise
ValueError
(
"invalidation tid (%s) must not be less"
" than previous one (%s)"
%
(
u64
(
tid
),
u64
(
self
.
tid
)))
ofs
=
self
.
current
.
get
(
oid
)
if
ofs
is
None
:
...
...
src/ZEO/tests/test_cache.py
View file @
9070f8e2
...
...
@@ -76,8 +76,6 @@ class CacheTests(unittest.TestCase):
self
.
assertEqual
(
self
.
cache
.
getLastTid
(),
None
)
self
.
cache
.
setLastTid
(
n2
)
self
.
assertEqual
(
self
.
cache
.
getLastTid
(),
n2
)
self
.
cache
.
invalidate
(
n1
,
n1
)
self
.
cache
.
invalidate
(
n1
,
n1
)
self
.
assertEqual
(
self
.
cache
.
getLastTid
(),
n2
)
self
.
cache
.
invalidate
(
n1
,
n3
)
self
.
assertEqual
(
self
.
cache
.
getLastTid
(),
n3
)
...
...
@@ -92,10 +90,11 @@ class CacheTests(unittest.TestCase):
def
testInvalidate
(
self
):
data1
=
"data for n1"
self
.
cache
.
store
(
n1
,
n3
,
None
,
data1
)
self
.
cache
.
invalidate
(
n1
,
n4
)
self
.
cache
.
invalidate
(
n2
,
n2
)
self
.
cache
.
invalidate
(
n1
,
n4
)
self
.
assertEqual
(
self
.
cache
.
load
(
n1
),
None
)
self
.
assertEqual
(
self
.
cache
.
loadBefore
(
n1
,
n4
),
(
data1
,
n3
,
n4
))
self
.
assertEqual
(
self
.
cache
.
loadBefore
(
n1
,
n4
),
(
data1
,
n3
,
n4
))
def
testNonCurrent
(
self
):
data1
=
"data for n1"
...
...
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