def from_lines(cls, lines):
md = {}
for line in lines:
if line.startswith("EOF"):
break
if '=' not in line:
continue
key, value = line.split('=', 1)
md[key.strip()] = value.strip()
try:
return cls(
domain=md[constants.DOMAIN],
image=md[constants.IMAGE],
puuid=md[constants.PUUID],
size=int(md[constants.SIZE]),
format=md[constants.FORMAT],
type=md[constants.TYPE],
voltype=md[constants.VOLTYPE],
disktype=md[constants.DISKTYPE],
description=md[constants.DESCRIPTION],
legality=md[constants.LEGALITY],
ctime=int(md[constants.CTIME]),
mtime=int(md[constants.MTIME]),
# generation was added to the set of metadata keys well
# after the above fields. Therefore, it may not exist
# on storage for pre-existing volumes. In that case we
# report a default value of 0 which will be written to
# the volume metadata on the next metadata change.
generation=int(
md.get(constants.GENERATION,
constants.DEFAULT_GENERATION)))
except KeyError as e:
raise exception.MetaDataKeyNotFoundError(
"Missing metadata key: %s: found: %s" % (e, md))
def from_lines(cls, lines):
md = {}
for line in lines:
if line.startswith("EOF"):
break
if '=' not in line:
continue
key, value = line.split('=', 1)
md[key.strip()] = value.strip()
try:
return cls(domain=md[constants.DOMAIN],
image=md[constants.IMAGE],
puuid=md[constants.PUUID],
size=int(md[constants.SIZE]),
format=md[constants.FORMAT],
type=md[constants.TYPE],
voltype=md[constants.VOLTYPE],
disktype=md[constants.DISKTYPE],
description=md[constants.DESCRIPTION],
legality=md[constants.LEGALITY],
ctime=int(md[constants.CTIME]),
mtime=int(md[constants.MTIME]))
except KeyError as e:
raise exception.MetaDataKeyNotFoundError(
"Missing metadata key: %s: found: %s" % (e, md))
def getMetaParam(self, key):
"""
Get a value of a specific key
"""
meta = self.getMetadata()
try:
return meta[key]
except KeyError:
raise se.MetaDataKeyNotFoundError(str(meta) + ":" + str(key))
def from_lines(cls, lines):
'''
Instantiates a VolumeMetadata object from storage read bytes.
Args:
lines: list of key=value entries given as bytes read from storage
metadata section. "EOF" entry terminates parsing.
'''
md = {}
for line in lines:
line = line.decode("utf-8")
if line.startswith("EOF"):
break
if '=' not in line:
continue
key, value = line.split('=', 1)
md[key.strip()] = value.strip()
try:
# We work internally in bytes, even if old format store
# value in blocks, we will read SIZE instead of CAPACITY
# from non-converted volumes and use it
if sc.CAPACITY in md:
capacity = int(md[sc.CAPACITY])
else:
capacity = int(md[_SIZE]) * sc.BLOCK_SIZE_512
return cls(
domain=md[sc.DOMAIN],
image=md[sc.IMAGE],
puuid=md[sc.PUUID],
capacity=capacity,
format=md[sc.FORMAT],
type=md[sc.TYPE],
voltype=md[sc.VOLTYPE],
disktype=md[sc.DISKTYPE],
description=md[sc.DESCRIPTION],
legality=md[sc.LEGALITY],
ctime=int(md[sc.CTIME]),
# generation was added to the set of metadata keys well
# after the above fields. Therefore, it may not exist
# on storage for pre-existing volumes. In that case we
# report a default value of 0 which will be written to
# the volume metadata on the next metadata change.
generation=int(md.get(sc.GENERATION, sc.DEFAULT_GENERATION)))
except KeyError as e:
if "NONE" in md:
# Before 4.20.34-1 (ovirt 4.2.5) volume metadata could be
# cleared by writing invalid metadata when deleting a volume.
# See https://bugzilla.redhat.com/1574631.
raise exception.MetadataCleared("lines={}".format(lines))
raise exception.MetaDataKeyNotFoundError("key={} lines={}".format(
e, lines))
def from_lines(cls, lines):
md = {}
for line in lines:
if line.startswith("EOF"):
break
if '=' not in line:
continue
key, value = line.split('=', 1)
md[key.strip()] = value.strip()
try:
# We work internally in bytes, even if old format store
# value in blocks, we will read SIZE instead of CAPACITY
# from non-converted volumes and use it
if sc.CAPACITY in md:
capacity = int(md[sc.CAPACITY])
else:
capacity = int(md[sc.SIZE]) * sc.BLOCK_SIZE_512
return cls(
domain=md[sc.DOMAIN],
image=md[sc.IMAGE],
puuid=md[sc.PUUID],
capacity=capacity,
format=md[sc.FORMAT],
type=md[sc.TYPE],
voltype=md[sc.VOLTYPE],
disktype=md[sc.DISKTYPE],
description=md[sc.DESCRIPTION],
legality=md[sc.LEGALITY],
ctime=int(md[sc.CTIME]),
# generation was added to the set of metadata keys well
# after the above fields. Therefore, it may not exist
# on storage for pre-existing volumes. In that case we
# report a default value of 0 which will be written to
# the volume metadata on the next metadata change.
generation=int(md.get(sc.GENERATION, sc.DEFAULT_GENERATION)))
except KeyError as e:
raise exception.MetaDataKeyNotFoundError(
"Missing metadata key: %s: found: %s" % (e, md))
def getVersion(self):
try:
version = self.getMetaParam(DMDK_VERSION)
except KeyError:
raise se.MetaDataKeyNotFoundError("key={}".format(DMDK_VERSION))
return version