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Nicolas Wavrant
ZODB
Commits
2dcb463c
Commit
2dcb463c
authored
Dec 09, 2008
by
Jim Fulton
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Split blob packing tests into generic resuable and non-generic tests.
parent
cff96431
Changes
4
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4 changed files
with
176 additions
and
159 deletions
+176
-159
src/ZEO/tests/testZEO.py
src/ZEO/tests/testZEO.py
+2
-4
src/ZODB/tests/blob_packing.txt
src/ZODB/tests/blob_packing.txt
+7
-150
src/ZODB/tests/blobstorage_packing.txt
src/ZODB/tests/blobstorage_packing.txt
+155
-0
src/ZODB/tests/testblob.py
src/ZODB/tests/testblob.py
+12
-5
No files found.
src/ZEO/tests/testZEO.py
View file @
2dcb463c
...
...
@@ -1233,11 +1233,9 @@ def test_suite():
suite
.
addTest
(
sub
)
suite
.
addTest
(
ZODB
.
tests
.
testblob
.
storage_reusable_suite
(
'ClientStorageNonSharedBlobs'
,
ServerManagingClientStorage
,
test_blob_storage_recovery
=
False
))
'ClientStorageNonSharedBlobs'
,
ServerManagingClientStorage
))
suite
.
addTest
(
ZODB
.
tests
.
testblob
.
storage_reusable_suite
(
'ClientStorageSharedBlobs'
,
create_storage_shared
,
test_blob_storage_recovery
=
False
))
'ClientStorageSharedBlobs'
,
create_storage_shared
))
return
suite
...
...
src/ZODB/tests/blob_packing.txt
View file @
2dcb463c
##############################################################################
#
# Copyright (c) 2005 Zope Corporation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
Packing support for blob data
=============================
Set up:
>>> from ZODB.FileStorage import FileStorage
>>> from ZODB.MappingStorage import MappingStorage
>>> from ZODB.serialize import referencesf
>>> from ZODB.blob import Blob
, BlobStorage
>>> from ZODB.blob import Blob
>>> from ZODB import utils
>>> from ZODB.DB import DB
>>> import transaction
>>> storagefile = 'Data.fs'
>>> blob_dir = 'blobs'
A helper method to assure a unique timestamp across multiple platforms:
...
...
@@ -36,8 +18,7 @@ UNDOING
We need a database with an undoing blob supporting storage:
>>> base_storage = FileStorage(storagefile)
>>> blob_storage = BlobStorage(blob_dir, base_storage)
>>> blob_storage = create_storage()
>>> database = DB(blob_storage)
Create our root object:
...
...
@@ -62,25 +43,25 @@ Put some revisions of a blob object in our database and on the filesystem:
>>> times.append(new_time())
>>> root['blob'].open('w').write('this is blob data 1')
>>> transaction.commit()
>>> tids.append(blob
_storage._tid
)
>>> tids.append(blob
._p_serial
)
>>> nothing = transaction.begin()
>>> times.append(new_time())
>>> root['blob'].open('w').write('this is blob data 2')
>>> transaction.commit()
>>> tids.append(blob
_storage._tid
)
>>> tids.append(blob
._p_serial
)
>>> nothing = transaction.begin()
>>> times.append(new_time())
>>> root['blob'].open('w').write('this is blob data 3')
>>> transaction.commit()
>>> tids.append(blob
_storage._tid
)
>>> tids.append(blob
._p_serial
)
>>> nothing = transaction.begin()
>>> times.append(new_time())
>>> root['blob'].open('w').write('this is blob data 4')
>>> transaction.commit()
>>> tids.append(blob
_storage._tid
)
>>> tids.append(blob
._p_serial
)
>>> oid = root['blob']._p_oid
>>> fns = [ blob_storage.fshelper.getBlobFilename(oid, x) for x in tids ]
...
...
@@ -144,128 +125,4 @@ revision as well as the entire directory:
Clean up our blob directory and database:
>>> rmtree(blob_dir)
>>> base_storage.close()
>>> os.unlink(storagefile)
>>> os.unlink(storagefile+".index")
>>> os.unlink(storagefile+".tmp")
>>> os.unlink(storagefile+".old")
NON-UNDOING
===========
We need an database with a NON-undoing blob supporting storage:
>>> base_storage = MappingStorage('storage')
>>> blob_storage = BlobStorage(blob_dir, base_storage)
>>> database = DB(blob_storage)
Create our root object:
>>> connection1 = database.open()
>>> root = connection1.root()
Put some revisions of a blob object in our database and on the filesystem:
>>> import time, os
>>> tids = []
>>> times = []
>>> nothing = transaction.begin()
>>> times.append(new_time())
>>> blob = Blob()
>>> blob.open('w').write('this is blob data 0')
>>> root['blob'] = blob
>>> transaction.commit()
>>> tids.append(blob_storage._tid)
>>> nothing = transaction.begin()
>>> times.append(new_time())
>>> root['blob'].open('w').write('this is blob data 1')
>>> transaction.commit()
>>> tids.append(blob_storage._tid)
>>> nothing = transaction.begin()
>>> times.append(new_time())
>>> root['blob'].open('w').write('this is blob data 2')
>>> transaction.commit()
>>> tids.append(blob_storage._tid)
>>> nothing = transaction.begin()
>>> times.append(new_time())
>>> root['blob'].open('w').write('this is blob data 3')
>>> transaction.commit()
>>> tids.append(blob_storage._tid)
>>> nothing = transaction.begin()
>>> times.append(new_time())
>>> root['blob'].open('w').write('this is blob data 4')
>>> transaction.commit()
>>> tids.append(blob_storage._tid)
>>> oid = root['blob']._p_oid
>>> fns = [ blob_storage.fshelper.getBlobFilename(oid, x) for x in tids ]
>>> [ os.path.exists(x) for x in fns ]
[True, True, True, True, True]
Get our blob filenames for this oid.
>>> fns = [ blob_storage.fshelper.getBlobFilename(oid, x) for x in tids ]
Do a pack to the slightly before the first revision was written:
>>> packtime = times[0]
>>> blob_storage.pack(packtime, referencesf)
>>> [ os.path.exists(x) for x in fns ]
[False, False, False, False, True]
Do a pack to now:
>>> packtime = new_time()
>>> blob_storage.pack(packtime, referencesf)
>>> [ os.path.exists(x) for x in fns ]
[False, False, False, False, True]
Delete the object and do a pack, it should get rid of the most current
revision as well as the entire directory:
>>> nothing = transaction.begin()
>>> del root['blob']
>>> transaction.commit()
>>> packtime = new_time()
>>> blob_storage.pack(packtime, referencesf)
>>> [ os.path.exists(x) for x in fns ]
[False, False, False, False, False]
>>> os.path.exists(os.path.split(fns[0])[0])
False
Avoiding parallel packs
=======================
Blob packing (similar to FileStorage) can only be run once at a time. For
this, a flag (_blobs_pack_is_in_progress) is set. If the pack method is called
while this flag is set, it will refuse to perform another pack, until the flag
is reset:
>>> blob_storage._blobs_pack_is_in_progress
False
>>> blob_storage._blobs_pack_is_in_progress = True
>>> blob_storage.pack(packtime, referencesf)
Traceback (most recent call last):
BlobStorageError: Already packing
>>> blob_storage._blobs_pack_is_in_progress = False
>>> blob_storage.pack(packtime, referencesf)
We can also see, that the flag is set during the pack, by leveraging the
knowledge that the underlying storage's pack method is also called:
>>> def dummy_pack(time, ref):
... print "_blobs_pack_is_in_progress =",
... print blob_storage._blobs_pack_is_in_progress
... return base_pack(time, ref)
>>> base_pack = base_storage.pack
>>> base_storage.pack = dummy_pack
>>> blob_storage.pack(packtime, referencesf)
_blobs_pack_is_in_progress = True
>>> blob_storage._blobs_pack_is_in_progress
False
>>> base_storage.pack = base_pack
>>> blob_storage.close()
src/ZODB/tests/blobstorage_packing.txt
0 → 100644
View file @
2dcb463c
##############################################################################
#
# Copyright (c) 2005 Zope Corporation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
Packing support for blob data
=============================
Set up:
>>> from ZODB.MappingStorage import MappingStorage
>>> from ZODB.serialize import referencesf
>>> from ZODB.blob import Blob, BlobStorage
>>> from ZODB import utils
>>> from ZODB.DB import DB
>>> import transaction
>>> storagefile = 'Data.fs'
>>> blob_dir = 'blobs'
A helper method to assure a unique timestamp across multiple platforms:
>>> from ZODB.tests.testblob import new_time
UNDOING
=======
See blob_packing.txt.
NON-UNDOING
===========
We need an database with a NON-undoing blob supporting storage:
>>> base_storage = MappingStorage('storage')
>>> blob_storage = BlobStorage(blob_dir, base_storage)
>>> database = DB(blob_storage)
Create our root object:
>>> connection1 = database.open()
>>> root = connection1.root()
Put some revisions of a blob object in our database and on the filesystem:
>>> import time, os
>>> tids = []
>>> times = []
>>> nothing = transaction.begin()
>>> times.append(new_time())
>>> blob = Blob()
>>> blob.open('w').write('this is blob data 0')
>>> root['blob'] = blob
>>> transaction.commit()
>>> tids.append(blob_storage._tid)
>>> nothing = transaction.begin()
>>> times.append(new_time())
>>> root['blob'].open('w').write('this is blob data 1')
>>> transaction.commit()
>>> tids.append(blob_storage._tid)
>>> nothing = transaction.begin()
>>> times.append(new_time())
>>> root['blob'].open('w').write('this is blob data 2')
>>> transaction.commit()
>>> tids.append(blob_storage._tid)
>>> nothing = transaction.begin()
>>> times.append(new_time())
>>> root['blob'].open('w').write('this is blob data 3')
>>> transaction.commit()
>>> tids.append(blob_storage._tid)
>>> nothing = transaction.begin()
>>> times.append(new_time())
>>> root['blob'].open('w').write('this is blob data 4')
>>> transaction.commit()
>>> tids.append(blob_storage._tid)
>>> oid = root['blob']._p_oid
>>> fns = [ blob_storage.fshelper.getBlobFilename(oid, x) for x in tids ]
>>> [ os.path.exists(x) for x in fns ]
[True, True, True, True, True]
Get our blob filenames for this oid.
>>> fns = [ blob_storage.fshelper.getBlobFilename(oid, x) for x in tids ]
Do a pack to the slightly before the first revision was written:
>>> packtime = times[0]
>>> blob_storage.pack(packtime, referencesf)
>>> [ os.path.exists(x) for x in fns ]
[False, False, False, False, True]
Do a pack to now:
>>> packtime = new_time()
>>> blob_storage.pack(packtime, referencesf)
>>> [ os.path.exists(x) for x in fns ]
[False, False, False, False, True]
Delete the object and do a pack, it should get rid of the most current
revision as well as the entire directory:
>>> nothing = transaction.begin()
>>> del root['blob']
>>> transaction.commit()
>>> packtime = new_time()
>>> blob_storage.pack(packtime, referencesf)
>>> [ os.path.exists(x) for x in fns ]
[False, False, False, False, False]
>>> os.path.exists(os.path.split(fns[0])[0])
False
Avoiding parallel packs
=======================
Blob packing (similar to FileStorage) can only be run once at a time. For
this, a flag (_blobs_pack_is_in_progress) is set. If the pack method is called
while this flag is set, it will refuse to perform another pack, until the flag
is reset:
>>> blob_storage._blobs_pack_is_in_progress
False
>>> blob_storage._blobs_pack_is_in_progress = True
>>> blob_storage.pack(packtime, referencesf)
Traceback (most recent call last):
BlobStorageError: Already packing
>>> blob_storage._blobs_pack_is_in_progress = False
>>> blob_storage.pack(packtime, referencesf)
We can also see, that the flag is set during the pack, by leveraging the
knowledge that the underlying storage's pack method is also called:
>>> def dummy_pack(time, ref):
... print "_blobs_pack_is_in_progress =",
... print blob_storage._blobs_pack_is_in_progress
... return base_pack(time, ref)
>>> base_pack = base_storage.pack
>>> base_storage.pack = dummy_pack
>>> blob_storage.pack(packtime, referencesf)
_blobs_pack_is_in_progress = True
>>> blob_storage._blobs_pack_is_in_progress
False
>>> base_storage.pack = base_pack
src/ZODB/tests/testblob.py
View file @
2dcb463c
...
...
@@ -552,7 +552,8 @@ def setUpBlobAdaptedFileStorage(test):
test
.
globs
[
'create_storage'
]
=
create_storage
def
storage_reusable_suite
(
prefix
,
factory
,
test_blob_storage_recovery
=
True
,
test_blob_storage_recovery
=
False
,
test_packing
=
False
,
):
"""Return a test suite for a generic IBlobStorage.
...
...
@@ -575,6 +576,11 @@ def storage_reusable_suite(prefix, factory,
setUp
=
setup
,
tearDown
=
zope
.
testing
.
setupstack
.
tearDown
,
optionflags
=
doctest
.
ELLIPSIS
,
))
if
test_packing
:
suite
.
addTest
(
doctest
.
DocFileSuite
(
"blob_packing.txt"
,
setUp
=
setup
,
tearDown
=
zope
.
testing
.
setupstack
.
tearDown
,
))
suite
.
addTest
(
doctest
.
DocTestSuite
(
setUp
=
setup
,
tearDown
=
zope
.
testing
.
setupstack
.
tearDown
,
checker
=
zope
.
testing
.
renormalizing
.
RENormalizing
([
...
...
@@ -608,9 +614,8 @@ def test_suite():
suite.addTest(unittest.makeSuite(ZODBBlobConfigTest))
suite.addTest(unittest.makeSuite(BlobCloneTests))
suite.addTest(doctest.DocFileSuite(
"blob_basic.txt",
"blob_packing.txt", "blob_consume.txt",
"blob_tempdir.txt",
"blob_basic.txt", "blob_consume.txt", "blob_tempdir.txt",
"blobstorage_packing.txt",
setUp=setUp,
tearDown=zope.testing.setupstack.tearDown,
optionflags=doctest.ELLIPSIS,
...
...
@@ -629,7 +634,9 @@ def test_suite():
suite.addTest(storage_reusable_suite(
'
BlobAdaptedFileStorage
',
lambda name, blob_dir:
ZODB.blob.BlobStorage(blob_dir, FileStorage('
%
s
.
fs
' % name))
ZODB.blob.BlobStorage(blob_dir, FileStorage('
%
s
.
fs
' % name)),
test_blob_storage_recovery=True,
test_packing=True,
))
return suite
...
...
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