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):
33 class FuseArvadosFile(File):
34 """Wraps a ArvadosFile."""
36 def __init__(self, parent_inode, arvfile, _mtime):
37 super(FuseArvadosFile, self).__init__(parent_inode, _mtime)
38 self.arvfile = arvfile
41 return self.arvfile.size()
43 def readfrom(self, off, size, num_retries=0):
44 return self.arvfile.readfrom(off, size, num_retries)
50 return self.arvfile.writable()
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, num_retries=0):
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"