class LocalVolumeController(object):
"""Disk controller for OS API"""
def __init__(self):
self.local_volume_api = LocalAPI()
def create(self, req, body):
context = req.environ['nova.context']
vol = body['volume']
vol_type = vol.get('volume_type', None)
if vol_type:
try:
vol_type = volume_types.get_volume_type_by_name(context,
vol_type)
except exception.NotFound:
return faults.Fault(exc.HTTPNotFound())
metadata = vol.get('metadata', None)
new_volume = self.local_volume_api.create_local(context,
instance_id=vol['instance_id'],
snapshot_id=vol.get('snapshot_id'),
device=vol['device'],
size=self._get_size(vol.get('size')),
description=vol.get('display_description'),
volume_type=vol_type,
metadata=metadata)
new_volume = self.local_volume_api.get(context, new_volume['id'])
retval = _translate_volume_detail_view(new_volume)
return {'volume': retval}
def delete(self, req, id):
"""Delete a volume."""
volume_id = id
context = req.environ['nova.context']
LOG.audit(_("Delete volume with id: %s"), volume_id, context=context)
try:
self.local_volume_api.delete(context, volume_id)
except exception.NotFound:
return faults.Fault(exc.HTTPNotFound())
return webob.Response(status_int=202)
def index(self, req):
"""Returns a summary list of volumes."""
return self._items(req, entity_maker=_translate_volume_summary_view)
def _items(self, req, entity_maker):
"""Returns a list of volumes, transformed through entity_maker."""
context = req.environ['nova.context']
volumes = self.local_volume_api.get_all(context)
limited_list = common.limited(volumes, req)
res = [entity_maker(vol) for vol in limited_list]
return {'volumes': res}
def _get_size(self, parameter):
if not parameter:
return parameter
modifiers = {
'': 1,
'b': 1,
'K': 1024,
'M': 1024 * 1024,
'G': 1024 * 1024 * 1024
}
match = re.search('^(?P<size>[0-9]+)(?P<modifier>[A-Za-z]?)$', parameter)
if not match:
raise RuntimeError('Invalid parameter: %s' % parameter)
size = int(match.group('size'))
modifier = match.group('modifier')
if modifier not in modifiers:
raise RuntimeError('Only %s modifiers supported' % modifiers.keys())
return size * modifiers[modifier]
def update(self, req, id, body):
context = req.environ.get('nova.context')
vol = body['volume']
volume_id = id
new_size = self._get_size(vol['size'])
LOG.audit(_("Resizing volume with id: %s to size %s"), volume_id, vol['size'])
try:
self.local_volume_api.resize(context, volume_id, new_size)
except exception.NotFound:
return faults.Fault(exc.HTTPNotFound())
return webob.Response(status_int=202)
