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Light refactor of Metadata class

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This commit is contained in:
Alex Liebowitz 2016-10-14 15:31:32 -04:00
parent 5b0b8a19ff
commit bed3f551fd
1 changed files with 17 additions and 18 deletions
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35
lbrynet/metadata/Metadata.py
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@ -13,28 +13,27 @@ def verify_name_characters(name):
assert c in NAME_ALLOWED_CHARSET, "Invalid character" assert c in NAME_ALLOWED_CHARSET, "Invalid character"
return True return True
def migrate_001_to_002(metadata):
metadata['ver'] = '0.0.2'
metadata['nsfw'] = False
def migrate_002_to_003(metadata):
metadata['ver'] = '0.0.3'
if 'content-type' in metadata:
metadata['content_type'] = metadata['content-type']
del metadata['content-type']
class Metadata(StructuredDict): class Metadata(StructuredDict):
current_version = '0.0.3' current_version = '0.0.3'
def __init__(self, metadata, migrate=True, target_version=None): _versions = [
self._versions = [ ('0.0.1', metadata_schemas.VER_001, None),
('0.0.1', metadata_schemas.VER_001, None), ('0.0.2', metadata_schemas.VER_002, migrate_001_to_002),
('0.0.2', metadata_schemas.VER_002, self._migrate_001_to_002), ('0.0.3', metadata_schemas.VER_003, migrate_002_to_003)
('0.0.3', metadata_schemas.VER_003, self._migrate_002_to_003) ]
]
def __init__(self, metadata, migrate=True, target_version=None):
starting_version = metadata.get('ver', '0.0.1') starting_version = metadata.get('ver', '0.0.1')
StructuredDict.__init__(self, metadata, starting_version, migrate, target_version) StructuredDict.__init__(self, metadata, starting_version, migrate, target_version)
def _migrate_001_to_002(self):
self['ver'] = '0.0.2'
def _migrate_002_to_003(self):
self['ver'] = '0.0.3'
if 'content-type' in self:
self['content_type'] = self['content-type']
del self['content-type']