def remove(self, path):
self._log(INFO, 'Removing file %s' % path)
if self.getmeta("read_only"):
raise errors.UnsupportedError('read only filesystem')
if not self.isfile(path):
if not self.isdir(path):
raise errors.ResourceNotFoundError(path)
raise errors.ResourceInvalidError(path)
try:
self.tahoeutil.unlink(self.dircap, path)
except Exception, e:
raise errors.ResourceInvalidError(path)
def open(self, path, mode='r', **kwargs):
self._log(INFO, 'Opening file %s in mode %s' % (path, mode))
newfile = False
if not self.exists(path):
if 'w' in mode or 'a' in mode:
newfile = True
else:
self._log(DEBUG, "File %s not found while opening for reads" % path)
raise errors.ResourceNotFoundError(path)
elif self.isdir(path):
self._log(DEBUG, "Path %s is directory, not a file" % path)
raise errors.ResourceInvalidError(path)
elif 'w' in mode:
newfile = True
if newfile:
self._log(DEBUG, 'Creating empty file %s' % path)
if self.getmeta("read_only"):
raise errors.UnsupportedError('read only filesystem')
self.setcontents(path, b(''))
handler = NullFile()
else:
self._log(DEBUG, 'Opening existing file %s for reading' % path)
handler = self.getrange(path,0)
return RemoteFileBuffer(self, path, mode, handler,
write_on_flush=False)
def _info(self, path, data):
if isinstance(data, list):
type = data[0]
data = data[1]
elif isinstance(data, dict):
type = data['type']
else:
raise errors.ResourceInvalidError('Metadata in unknown format!')
if type == 'unknown':
raise errors.ResourceNotFoundError(path)
info = {
'name': str(self.fixwinpath(path, True)),
'type': type,
'size': data.get('size', 0),
'ctime': None,
'uri': data.get('rw_uri', data.get('ro_uri'))
}
if 'metadata' in data:
info['ctime'] = data['metadata'].get('ctime')
if info['type'] == 'dirnode':
info['st_mode'] = 0o777 | statinfo.S_IFDIR
else:
info['st_mode'] = 0o644
return info
def makedir(self, path, recursive=False, allow_recreate=False):
self._log(INFO, "Creating directory %s" % path)
if self.getmeta("read_only"):
raise errors.UnsupportedError('read only filesystem')
if self.exists(path):
if not self.isdir(path):
raise errors.ResourceInvalidError(path)
if not allow_recreate:
raise errors.DestinationExistsError(path)
if not recursive and not self.exists(dirname(path)):
raise errors.ParentDirectoryMissingError(path)
self.tahoeutil.mkdir(self.dircap, path)
def list(self, dircap, path=None):
path = self.fixwinpath(path, False)
data = json.load(
self.connection.get('/uri/%s%s' % (dircap, path), {'t': 'json'}))
if len(data) < 2 or data[0] != 'dirnode':
raise errors.ResourceInvalidError('Metadata in unknown format!')
data = data[1]['children']
for i in list(data.keys()):
x = self._info(i, data[i])
yield x
def _urlopen(self, req):
try:
return urlopen(req)
except Exception, e:
if not getattr(e, 'getcode', None):
raise errors.RemoteConnectionError(str(e))
code = e.getcode()
if code == 500:
# Probably out of space or unhappiness error
raise errors.StorageSpaceError(e.fp.read())
elif code in (400, 404, 410):
# Standard not found
raise errors.ResourceNotFoundError(e.fp.read())
raise errors.ResourceInvalidError(e.fp.read())
def _urlopen(self, req):
self.log.debug("_urlopen %s: %s" %
(repr(req), repr(req.get_full_url())))
try:
return urllib2.urlopen(req)
except Exception, e:
if not getattr(e, 'getcode', None):
raise errors.RemoteConnectionError(str(e))
code = e.getcode()
if code == 500:
raise errors.StorageSpaceError(e.fp.read())
elif code in (400, 404, 410):
raise errors.ResourceNotFoundError(e.fp.read())
raise errors.ResourceInvalidError(e.fp.read())
def removedir(self, path, recursive=False, force=False):
self._log(INFO, "Removing directory %s" % path)
if self.getmeta("read_only"):
raise errors.UnsupportedError('read only filesystem')
if not self.isdir(path):
if not self.isfile(path):
raise errors.ResourceNotFoundError(path)
raise errors.ResourceInvalidError(path)
if not force and self.listdir(path):
raise errors.DirectoryNotEmptyError(path)
self.tahoeutil.unlink(self.dircap, path)
if recursive and path != '/':
try:
self.removedir(dirname(path), recursive=True)
except errors.DirectoryNotEmptyError:
pass
