5 from fresh import FreshBase, convertTime
7 _logger = logging.getLogger('arvados.arvados_fuse')
10 """Base for file objects."""
12 def __init__(self, parent_inode, _mtime=0):
13 super(File, self).__init__()
15 self.parent_inode = parent_inode
21 def readfrom(self, off, size):
36 class StreamReaderFile(File):
37 """Wraps a StreamFileReader as a file."""
39 def __init__(self, parent_inode, reader, _mtime):
40 super(StreamReaderFile, self).__init__(parent_inode, _mtime)
44 return self.reader.size()
46 def readfrom(self, off, size):
47 return self.reader.readfrom(off, size)
53 class StringFile(File):
54 """Wrap a simple string as a file"""
55 def __init__(self, parent_inode, contents, _mtime):
56 super(StringFile, self).__init__(parent_inode, _mtime)
57 self.contents = contents
60 return len(self.contents)
62 def readfrom(self, off, size):
63 return self.contents[off:(off+size)]
66 class ObjectFile(StringFile):
67 """Wrap a dict as a serialized json object."""
69 def __init__(self, parent_inode, obj):
70 super(ObjectFile, self).__init__(parent_inode, "", 0)
71 self.uuid = obj['uuid']
74 def update(self, obj):
75 self._mtime = convertTime(obj['modified_at']) if 'modified_at' in obj else 0
76 self.contents = json.dumps(obj, indent=4, sort_keys=True) + "\n"