def _find_missing_references_from_pickles(destination, pickles, permanently_gone):
# Return a set of objects missing from the database given the
# pickle states of other objects.
# *permanently_gone* is a set of oid byte strings that are
# known to be missing and shouldn't be investigated and returned.
oids = []
for pickle in pickles:
# Support zc.zlibstorage wrappers.
if pickle.startswith(b'.z'):
pickle = zlib.decompress(pickle[2:])
get_oids_referenced_by_pickle(pickle, oids)
logger.info(
"Given %d pickles, there are %d unique references.",
len(pickles), len(oids)
)
missing_oids = OidSet()
destination.prefetch(oids)
for oid in oids:
if oid in permanently_gone:
continue
try:
state, tid = destination.load(oid, b'')
if is_blob_record(state):
destination.loadBlob(oid, tid)
except POSKeyError:
missing_oids.add(bytes8_to_int64(oid))
logger.info(
"Given %d pickles, there are %d missing references.",
len(pickles), len(missing_oids)
)
return missing_oids
def __copy_transaction(self, other, trans):
# Originally adapted from ZODB.blob.BlobStorageMixin
tpc = self.tpc
num_txn_records = 0
txn_data_size = 0
num_blobs = 0
tmp_blobs_to_rm = []
tpc.tpc_begin(trans, trans.tid, trans.status)
for record in trans:
num_txn_records += 1
if record.data:
txn_data_size += len(record.data)
blobfile = None
if is_blob_record(record.data):
try:
blobfile = other.openCommittedBlobFile(
record.oid, record.tid)
except POSKeyError:
logger.exception("Failed to open blob to copy")
if blobfile is not None:
fd, name = tempfile.mkstemp(
suffix='.tmp', dir=self.blobhelper.temporaryDirectory())
tmp_blobs_to_rm.append(name)
logger.log(TRACE,
"Copying %s to temporary blob file %s for upload",
blobfile, name)
with os.fdopen(fd, 'wb') as target:
# If we don't get the length, ``copy_blob`` will.
old_pos = blobfile.tell()
blobfile.seek(0, 2)
length = blobfile.tell()
blobfile.seek(old_pos)
copy_blob(blobfile, target, length)
txn_data_size += length
blobfile.close()
self.restore.restoreBlob(record.oid, record.tid, record.data,
name, record.data_txn, trans)
else:
self.restore.restore(record.oid, record.tid, record.data, '',
record.data_txn, trans)
tpc.tpc_vote(trans)
tpc.tpc_finish(trans)
num_blobs = len(tmp_blobs_to_rm)
if num_blobs:
for tmp_blob in tmp_blobs_to_rm:
logger.log(TRACE, "Removing temporary blob file %s", tmp_blob)
try:
os.unlink(tmp_blob)
except OSError:
pass
return num_txn_records, txn_data_size, num_blobs
def restore_one(self, active_txn_meta,
oid, tid, data):
# The signature for both ``restore`` and ``restoreBlob``
# is:
#
# (oid, serial, data, (blobfilename|prev_txn), version, txn)
#
# Where ``txn`` is the TransactionMetaData object
# originally passed to ``tpc_begin``. It is only used to
# check that the same object has been passed.
#
# ``prev_txn`` is not used but would come from ``record.data_txn``
txn_data_size = len(data) if data else 0
blobfile = None
if is_blob_record(data):
try:
blobfile = self.storage.openCommittedBlobFile(
oid, tid)
except POSKeyError: # pragma: no cover
logger.exception("Failed to open blob to copy")
# We may not be able to read the data after this.
data = self.restore._crs_transform_record_data(data)
if blobfile is not None:
fd, name = tempfile.mkstemp(
suffix='.tmp',
dir=self.blobhelper.temporaryDirectory()
)
self.temp_blobs_to_rm.append(name)
logger.log(
TRACE,
"Copying %s to temporary blob file %s for upload",
blobfile, name)
with os.fdopen(fd, 'wb') as target:
# If we don't get the length, ``copy_blob`` will.
old_pos = blobfile.tell()
blobfile.seek(0, 2)
length = blobfile.tell()
blobfile.seek(old_pos)
copy_blob(blobfile, target, length)
txn_data_size += length
blobfile.close()
self.restore.restoreBlob(oid, tid, data,
name, None, active_txn_meta)
else:
self.restore.restore(oid, tid, data,
'', None, active_txn_meta)
return txn_data_size, blobfile is not None
def compare_truncated(self, src, dest):
"""Confirm that dest is a truncated copy of src.
The copy process should have dropped all old revisions of objects
in src. Also note that the dest does not retain transaction
metadata.
"""
src_objects = {} # {oid: (tid, data, blob or None)}
for txn in src.iterator():
for rec in txn:
if is_blob_record(rec.data):
try:
fn = src.loadBlob(rec.oid, rec.tid)
except ZODB.POSException.POSKeyError:
blob = None
else:
blob = open(fn, 'rb').read()
else:
blob = None
src_objects[rec.oid] = (rec.tid, rec.data, blob)
unchecked = set(src_objects)
for txn in dest.iterator():
for rec in txn:
if is_blob_record(rec.data):
try:
fn = dest.loadBlob(rec.oid, rec.tid)
except ZODB.POSException.POSKeyError:
blob = None
else:
blob = open(fn, 'rb').read()
else:
blob = None
dst_object = (rec.tid, rec.data, blob)
src_object = src_objects[rec.oid]
self.assertEqual(src_object, dst_object)
unchecked.remove(rec.oid)
self.assertEqual(len(unchecked), 0)
def compare_truncated(self, src, dest):
"""Confirm that dest is a truncated copy of src.
The copy process should have dropped all old revisions of objects
in src. Also note that the dest does not retain transaction
metadata.
"""
src_objects = {} # {oid: (tid, data, blob or None)}
for txn in src.iterator():
for rec in txn:
if is_blob_record(rec.data):
try:
fn = src.loadBlob(rec.oid, rec.tid)
except ZODB.POSException.POSKeyError:
blob = None
else:
blob = open(fn, 'rb').read()
else:
blob = None
src_objects[rec.oid] = (rec.tid, rec.data, blob)
unchecked = set(src_objects)
for txn in dest.iterator():
for rec in txn:
if is_blob_record(rec.data):
try:
fn = dest.loadBlob(rec.oid, rec.tid)
except ZODB.POSException.POSKeyError:
blob = None
else:
blob = open(fn, 'rb').read()
else:
blob = None
dst_object = (rec.tid, rec.data, blob)
src_object = src_objects[rec.oid]
self.assertEqual(src_object, dst_object)
unchecked.remove(rec.oid)
self.assertEqual(len(unchecked), 0)
def copyTransactionsFrom(self, other):
for trans in other.iterator():
self.tpc_begin(trans, trans.tid, trans.status)
for record in trans:
blobfilename = None
if is_blob_record(record.data):
try:
blobfilename = other.loadBlob(record.oid, record.tid)
except POSKeyError:
pass
if blobfilename is not None:
fd, name = tempfile.mkstemp(
suffix='.tmp', dir=self.fshelper.temp_dir)
os.close(fd)
os.chmod(name, 0640)
utils.cp(open(blobfilename, 'rb'), open(name, 'wb'))
self.restoreBlob(record.oid, record.tid, record.data,
name, record.data_txn, trans)
else:
self.restore(record.oid, record.tid, record.data,
'', record.data_txn, trans)
self.tpc_vote(trans)
self.tpc_finish(trans)
def copyTransactionsFrom(self, other):
# pylint:disable=too-many-locals
# adapted from ZODB.blob.BlobStorageMixin
begin_time = time.time()
txnum = 0
total_size = 0
blobhelper = self.blobhelper
tpc = self.tpc
restore = self.restore
logger.info("Counting the transactions to copy.")
num_txns = 0
for _ in other.iterator():
num_txns += 1
logger.info("Copying %d transactions", num_txns)
for trans in other.iterator():
txnum += 1
num_txn_records = 0
tpc.tpc_begin(trans, trans.tid, trans.status)
for record in trans:
blobfile = None
if is_blob_record(record.data):
try:
blobfile = other.openCommittedBlobFile(
record.oid, record.tid)
except POSKeyError:
pass
if blobfile is not None:
fd, name = tempfile.mkstemp(
suffix='.tmp', dir=blobhelper.temporaryDirectory())
os.close(fd)
with open(name, 'wb') as target:
copy_blob(blobfile, target)
blobfile.close()
restore.restoreBlob(record.oid, record.tid, record.data,
name, record.data_txn, trans)
else:
restore.restore(record.oid, record.tid, record.data, '',
record.data_txn, trans)
num_txn_records += 1
if record.data:
total_size += len(record.data)
tpc.tpc_vote(trans)
tpc.tpc_finish(trans)
pct_complete = '%1.2f%%' % (txnum * 100.0 / num_txns)
elapsed = time.time() - begin_time
if elapsed:
rate = total_size / 1e6 / elapsed
else:
rate = 0.0
rate_str = '%1.3f' % rate
logger.info("Copied tid %d,%5d records | %6s MB/s (%6d/%6d,%7s)",
bytes8_to_int64(trans.tid), num_txn_records, rate_str,
txnum, num_txns, pct_complete)
elapsed = time.time() - begin_time
logger.info(
"All %d transactions copied successfully in %4.1f minutes.", txnum,
elapsed / 60.0)
def copyTransactionsFrom(self, other):
# pylint:disable=too-many-locals,too-many-statements,too-many-branches
# adapted from ZODB.blob.BlobStorageMixin
begin_time = time.time()
log_at = begin_time + self.log_interval
txnum = 0
total_size = 0
blobhelper = self.blobhelper
tpc = self.tpc
restore = self.restore
logger.info("Counting the transactions to copy.")
other_it = other.iterator()
logger.debug("Opened the other iterator: %s", other_it)
try:
num_txns = len(other_it)
if num_txns == 0:
# Hmm, that shouldn't really be right, should it?
# Try the other path.
raise TypeError()
except TypeError:
logger.debug("Iterator %s doesn't support len()", other_it)
num_txns = 0
for _ in other_it:
num_txns += 1
other_it.close()
other_it = other.iterator()
logger.info("Copying %d transactions", num_txns)
tmp_blobs_to_rm = []
for trans in other_it:
txnum += 1
num_txn_records = 0
tpc.tpc_begin(trans, trans.tid, trans.status)
for record in trans:
blobfile = None
if is_blob_record(record.data):
try:
blobfile = other.openCommittedBlobFile(
record.oid, record.tid)
except POSKeyError:
pass
if blobfile is not None:
fd, name = tempfile.mkstemp(
suffix='.tmp', dir=blobhelper.temporaryDirectory())
tmp_blobs_to_rm.append(name)
logger.debug(
"Copying %s to temporary blob file %s for upload",
blobfile, name)
with os.fdopen(fd, 'wb') as target:
copy_blob(blobfile, target)
blobfile.close()
restore.restoreBlob(record.oid, record.tid, record.data,
name, record.data_txn, trans)
else:
restore.restore(record.oid, record.tid, record.data, '',
record.data_txn, trans)
num_txn_records += 1
if record.data:
total_size += len(record.data)
tpc.tpc_vote(trans)
tpc.tpc_finish(trans)
for tmp_blob in tmp_blobs_to_rm:
logger.debug("Removing temporary blob file %s", tmp_blob)
try:
os.unlink(tmp_blob)
except OSError:
pass
del tmp_blobs_to_rm[:]
if txnum % self.log_count == 0 and time.time() > log_at:
now = time.time()
log_at = now + self.log_interval
pct_complete = '%1.2f%%' % (txnum * 100.0 / num_txns)
elapsed = now - begin_time
if elapsed:
rate = total_size / 1e6 / elapsed
else:
rate = 0.0
rate_str = '%1.3f' % rate
logger.info(
"Copied tid %d,%5d records | %6s MB/s (%6d/%6d,%7s)",
bytes8_to_int64(trans.tid), num_txn_records, rate_str,
txnum, num_txns, pct_complete)
elapsed = time.time() - begin_time
logger.info(
"All %d transactions copied successfully in %4.1f minutes.", txnum,
elapsed / 60.0)
def compare_exact(self, storage1, storage2):
"""Confirm that storage1 and storage2 contain equivalent data"""
eq = self.assertEqual
missing = object()
iter1 = storage1.iterator()
iter2 = storage2.iterator()
for txn1, txn2 in zip(iter1, iter2):
eq(txn1.tid, txn2.tid)
eq(txn1.status, txn2.status)
eq(txn1.user, txn2.user)
eq(txn1.description, txn2.description)
# b/w compat on the 'extension' attribute
e1 = getattr(txn1, 'extension', missing)
if e1 is missing:
# old attribute name
e1 = txn1._extension
e2 = getattr(txn2, 'extension', missing)
if e2 is missing:
# old attribute name
e2 = txn2._extension
eq(e1, e2)
# compare the objects in the transaction, but disregard
# the order of the objects and any duplicated records
# since those are not important.
recs1 = dict([(r.oid, r) for r in txn1])
recs2 = dict([(r.oid, r) for r in txn2])
eq(len(recs1), len(recs2))
recs1 = sorted(iteritems(recs1))
recs2 = sorted(iteritems(recs2))
recs2.sort()
for (_oid1, rec1), (_oid2, rec2) in zip(recs1, recs2):
eq(rec1.oid, rec2.oid)
eq(rec1.tid, rec2.tid)
eq(rec1.data, rec2.data)
if is_blob_record(rec1.data):
try:
fn1 = storage1.loadBlob(rec1.oid, rec1.tid)
except ZODB.POSException.POSKeyError:
self.assertRaises(ZODB.POSException.POSKeyError,
storage2.loadBlob, rec1.oid,
rec1.tid)
else:
fn2 = storage2.loadBlob(rec1.oid, rec1.tid)
self.assertNotEqual(fn1, fn2)
with open(fn1, 'rb') as f1, open(fn2, 'rb') as f2:
eq(f1.read(), f2.read())
# Make sure ther are no more records left in txn1 and txn2, meaning
# they were the same length
try:
next(iter1)
except (IndexError, StopIteration):
pass
else:
self.fail("storage1 has more records")
try:
next(iter2)
except (IndexError, StopIteration):
pass
else:
self.fail("storage2 has more records")
iter1.close()
iter2.close()
def compare_exact(self, storage1, storage2):
"""Confirm that storage1 and storage2 contain equivalent data"""
eq = self.assertEqual
missing = object()
iter1 = storage1.iterator()
iter2 = storage2.iterator()
for txn1, txn2 in zip(iter1, iter2):
eq(txn1.tid, txn2.tid)
eq(txn1.status, txn2.status)
eq(txn1.user, txn2.user)
eq(txn1.description, txn2.description)
# b/w compat on the 'extension' attribute
e1 = getattr(txn1, 'extension', missing)
if e1 is missing:
# old attribute name
e1 = txn1._extension
e2 = getattr(txn2, 'extension', missing)
if e2 is missing:
# old attribute name
e2 = txn2._extension
eq(e1, e2)
# compare the objects in the transaction, but disregard
# the order of the objects and any duplicated records
# since those are not important.
recs1 = {r.oid: r for r in txn1}
recs2 = {r.oid: r for r in txn1}
eq(len(recs1), len(recs2))
recs1 = sorted(iteritems(recs1))
recs2 = sorted(iteritems(recs2))
recs2.sort()
for (_oid1, rec1), (_oid2, rec2) in zip(recs1, recs2):
eq(rec1.oid, rec2.oid)
eq(rec1.tid, rec2.tid)
eq(rec1.data, rec2.data)
if is_blob_record(rec1.data):
try:
fn1 = storage1.loadBlob(rec1.oid, rec1.tid)
except ZODB.POSException.POSKeyError:
self.assertRaises(
ZODB.POSException.POSKeyError,
storage2.loadBlob, rec1.oid, rec1.tid)
else:
fn2 = storage2.loadBlob(rec1.oid, rec1.tid)
self.assertNotEqual(fn1, fn2)
with open(fn1, 'rb') as f1, open(fn2, 'rb') as f2:
eq(f1.read(), f2.read())
# Make sure ther are no more records left in txn1 and txn2, meaning
# they were the same length
try:
next(iter1)
except (IndexError, StopIteration):
pass
else:
self.fail("storage1 has more records")
try:
next(iter2)
except (IndexError, StopIteration):
pass
else:
self.fail("storage2 has more records")
iter1.close()
iter2.close()
