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class ZfsConverter(object):
def __init__(self, typ, **kwargs):
self.typ = typ
self.readonly = kwargs.pop('readonly', False)
self.nullable = kwargs.pop('nullable', False)
self.null = kwargs.pop('null', '-')
self.read_null = kwargs.pop('read_null', self.null)
self.no = kwargs.pop('no', 'off')
self.yes = kwargs.pop('yes', 'on')
def to_native(self, value):
if value is None:
return None
if self.nullable and value == self.read_null:
return None
if self.typ is int:
try:
return int(value)
except ValueError:
return None
if self.typ is str:
return value
if self.typ is bool:
if value == self.yes:
return True
if value == self.no:
return False
return None
if self.typ == datetime:
return datetime.utcfromtimestamp(int(value))
def to_property(self, value):
if self.readonly:
raise ValueError('Property is read-only')
if value is None:
if not self.nullable:
raise ValueError('Property is not nullable')
return self.null
if self.typ is int:
return str(value)
if self.typ is str:
return value
if self.typ is bool:
return self.yes if value else self.no
if self.typ is datetime:
return str(value.timestamp())
UINT64_MAX = '18446744073709551615'
ZPOOL_PROPERTY_CONVERTERS = {
'name': ZfsConverter(str, readonly=True),
'size': ZfsConverter(int, readonly=True, nullable=True),
'capacity': ZfsConverter(str, readonly=True, nullable=True),
'altroot': ZfsConverter(str, nullable=True),
'ashift': ZfsConverter(int),
'health': ZfsConverter(str, readonly=True),
'guid': ZfsConverter(int, readonly=True),
'version': ZfsConverter(int, nullable=True),
'bootfs': ZfsConverter(str, nullable=True),
'delegation': ZfsConverter(bool, nullable=True),
'autoreplace': ZfsConverter(bool, nullable=True),
'cachemode': ZfsConverter(str, nullable=True),
'failmode': ZfsConverter(str, nullable=True),
'listsnapshots': ZfsConverter(bool, nullable=True),
'autoexpand': ZfsConverter(bool, nullable=True),
'dedupditto': ZfsConverter(int, readonly=True, nullable=True),
'dedupratio': ZfsConverter(str, readonly=True, nullable=True),
'free': ZfsConverter(int, readonly=True, nullable=True),
'allocated': ZfsConverter(int, readonly=True, nullable=True),
'readonly': ZfsConverter(bool, nullable=True),
'comment': ZfsConverter(str, nullable=True),
'expandsize': ZfsConverter(int, nullable=True),
'freeing': ZfsConverter(int, readonly=True, nullable=True),
'fragmentation': ZfsConverter(str, readonly=True, nullable=True),
'leaked': ZfsConverter(int, readonly=True, nullable=True)
}
ZFS_PROPERTY_CONVERTERS = {
'type': ZfsConverter(str, readonly=True),
'creation': ZfsConverter(datetime, readonly=True),
'used': ZfsConverter(int, readonly=True),
'available': ZfsConverter(int, readonly=True),
'referenced': ZfsConverter(int, readonly=True),
'mounted': ZfsConverter(bool, readonly=True, yes='yes', no='no'),
'quota': ZfsConverter(int, nullable=True, null='none', read_null='0'),
'reservation': ZfsConverter(int, nullable=True, null='none', read_null='0'),
'recordsize': ZfsConverter(int, nullable=True),
'mountpoint': ZfsConverter(str),
'sharenfs': ZfsConverter(str, nullable=True, null='off'),
'checksum': ZfsConverter(bool),
'compression': ZfsConverter(str),
'atime': ZfsConverter(bool),
'devices': ZfsConverter(bool),
'exec': ZfsConverter(bool),
'setuid': ZfsConverter(bool),
'readonly': ZfsConverter(bool),
'jailed': ZfsConverter(bool),
'snapdir': ZfsConverter(bool, off='hidden', on='visible'),
'aclmode': ZfsConverter(str),
'aclinherit': ZfsConverter(str),
'canmount': ZfsConverter(bool),
'xattr': ZfsConverter(bool),
'copies': ZfsConverter(int),
'version': ZfsConverter(int, nullable=True, null=''),
'utf8only': ZfsConverter(bool),
'normalization': ZfsConverter(str),
'casesensitivity': ZfsConverter(str),
'vscan': ZfsConverter(bool),
'nbmand': ZfsConverter(bool),
'sharesmb': ZfsConverter(str, nullable=True, null='off'),
'refquota': ZfsConverter(int, nullable=True, null='none', read_null='0'),
'refreservation': ZfsConverter(int, nullable=True, null='none', read_null='0'),
'primarycache': ZfsConverter(str),
'secondarycache': ZfsConverter(str),
'usedbysnapshots': ZfsConverter(int, readonly=True),
'usedbydataset': ZfsConverter(int, readonly=True),
'usedbychildren': ZfsConverter(int, readonly=True),
'usedbyrefreservation': ZfsConverter(int, readonly=True),
'logbias': ZfsConverter(str),
'dedup': ZfsConverter(str),
'mislabel': ZfsConverter(str),
'sync': ZfsConverter(str),
'refcompressratio': ZfsConverter(str, readonly=True),
'written': ZfsConverter(int, readonly=True),
'logicalused': ZfsConverter(int, readonly=True),
'logicalreferenced': ZfsConverter(int, readonly=True),
'volmode': ZfsConverter(str),
'volsize': ZfsConverter(int),
'volblocksize': ZfsConverter(int),
'filesystem_limit': ZfsConverter(int, nullable=True, read_null=UINT64_MAX),
'snapshot_limit': ZfsConverter(int, nullable=True, read_null=UINT64_MAX),
'filesystem_count': ZfsConverter(int, readonly=True, nullable=True, read_null=UINT64_MAX),
'snapshot_count': ZfsConverter(int, readonly=True, nullable=True, read_null=UINT64_MAX),
'redundant_metadata': ZfsConverter(str)
}
def parse_zfs_prop(prop, value):
try:
return ZFS_PROPERTY_CONVERTERS[prop].to_native(value)
except KeyError:
return value
def serialize_zfs_prop(prop, value):
try:
return ZFS_PROPERTY_CONVERTERS[prop].to_property(value)
except KeyError:
return value
def parse_zpool_prop(prop, value):
try:
return ZPOOL_PROPERTY_CONVERTERS[prop].to_native(value)
except KeyError:
return value
def serialize_zpool_prop(prop, value):
try:
return ZPOOL_PROPERTY_CONVERTERS[prop].to_property(value)
except KeyError:
return value
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