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from plugin.core.helpers.variable import json_date_serializer |
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from datetime import datetime |
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import json |
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import logging |
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import os |
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log = logging.getLogger(__name__) |
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class BackupRevision(object): |
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def __init__(self, timestamp, contents, tag=None, attributes=None, path=None): |
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self.timestamp = timestamp |
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self.contents = contents |
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self.tag = tag |
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self.attributes = attributes or {} |
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self.path = path |
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def delete(self): |
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if not self.path: |
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log.warn('Revision has no "path" defined, unable to delete revision') |
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return False |
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log.info('Deleting revision: %r', self) |
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# Delete revision metadata |
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try: |
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os.remove(self.path) |
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except Exception, ex: |
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log.warn('Unable to delete revision metadata file: %r - %s', self.path, ex, exc_info=True) |
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return False |
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# Delete revision contents |
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directory = os.path.dirname(self.path) |
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for name in self.contents: |
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path = os.path.join(directory, name) |
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if not os.path.exists(path): |
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continue |
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try: |
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os.remove(path) |
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except Exception, ex: |
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log.warn('Unable to delete revision file: %r - %s', path, ex, exc_info=True) |
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return False |
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return True |
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def dict(self): |
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# Construct dictionary of data |
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result = { |
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'timestamp': self.timestamp, |
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'contents': self.contents, |
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} |
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# Add revision "tag" |
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if self.tag: |
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result['tag'] = self.tag |
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# Merge attributes |
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result.update(self.attributes) |
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return result |
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@classmethod |
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def load(cls, path): |
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# Read json from `path` |
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with open(path, 'rb') as fp: |
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metadata = json.load(fp) |
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if not metadata: |
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raise ValueError('Invalid revision metadata: %r' % metadata) |
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# Parse timestamp |
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timestamp = metadata.pop('timestamp') |
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if timestamp: |
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timestamp = datetime.strptime(timestamp, '%Y-%m-%dT%H:%M:%S.%f') |
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# Construct `BackupRevision` object |
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return cls( |
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timestamp, |
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metadata.pop('contents'), |
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tag=metadata.pop('tag', None), |
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attributes=metadata, |
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path=path |
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) |
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def save(self, path): |
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log.debug('Writing backup revision metadata to %r', path) |
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# Write revision metadata to disk |
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with open(path, 'wb') as fp: |
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json.dump(self.dict(), fp, default=json_date_serializer) |
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# Update current revision path |
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self.path = path |
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def __repr__(self): |
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properties = [] |
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if self.timestamp: |
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properties.append(('timestamp', self.timestamp.isoformat())) |
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if self.tag: |
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properties.append(('tag', self.tag)) |
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if self.path: |
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properties.append(('path', self.path)) |
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return '<BackupRevision %s>' % ( |
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', '.join([ |
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'%s: %r' % (key, value) |
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for key, value in properties |
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]) |
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) |
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fuzeman /
Plex-Trakt-Scrobbler
