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, num_retries=0):
27 def clear(self, force=False):
31 class FuseArvadosFile(File):
32 """Wraps a ArvadosFile."""
34 def __init__(self, parent_inode, arvfile, _mtime):
35 super(FuseArvadosFile, self).__init__(parent_inode, _mtime)
36 self.arvfile = arvfile
39 return self.arvfile.size()
41 def readfrom(self, off, size, num_retries=0):
42 return self.arvfile.readfrom(off, size, num_retries)
48 class StringFile(File):
49 """Wrap a simple string as a file"""
50 def __init__(self, parent_inode, contents, _mtime):
51 super(StringFile, self).__init__(parent_inode, _mtime)
52 self.contents = contents
55 return len(self.contents)
57 def readfrom(self, off, size, num_retries=0):
58 return self.contents[off:(off+size)]
61 class ObjectFile(StringFile):
62 """Wrap a dict as a serialized json object."""
64 def __init__(self, parent_inode, obj):
65 super(ObjectFile, self).__init__(parent_inode, "", 0)
66 self.uuid = obj['uuid']
69 def update(self, obj):
70 self._mtime = convertTime(obj['modified_at']) if 'modified_at' in obj else 0
71 self.contents = json.dumps(obj, indent=4, sort_keys=True) + "\n"