def attach(self,
volume_id,
hostname,
mountpoint=None,
mode='rw',
multipath=False,
enforce_multipath=False):
# Check protocol type of storage backend.
with actions.VerifyProtocol(self.volumes_client, volume_id) as cmd:
# Retrieve vol-host attribute of volume.
volume_info = self.volumes_client.volumes.get(volume_id)
volume_capabilities = self.volumes_client.capabilities.get(
volume_info.__dict__['os-vol-host-attr:host'])
# Retrieve storage_protocol from storage backend capabilities.
protocol = volume_capabilities.storage_protocol.upper()
cmd.verify(protocol)
# Reserve volume before attachment
with actions.Reserve(self.volumes_client, volume_id) as cmd:
cmd.reserve()
with actions.InitializeConnection(self.volumes_client,
volume_id) as cmd:
connection = cmd.initialize(self, multipath, enforce_multipath)
with actions.ConnectVolume(self.volumes_client, volume_id) as cmd:
brick_connector = self._brick_get_connector(protocol,
do_local_attach=True)
device_info = cmd.connect(brick_connector, connection['data'],
mountpoint, mode, hostname)
return device_info
def _legacy_attach(self,
volume_id,
hostname,
mountpoint=None,
mode='rw',
multipath=False,
enforce_multipath=False,
nic=None):
"""The original/legacy attach workflow."""
# Reserve volume before attachment
with actions.Reserve(self.volumes_client, volume_id) as cmd:
cmd.reserve()
with actions.InitializeConnection(self.volumes_client,
volume_id) as cmd:
connection = cmd.initialize(self, multipath, enforce_multipath,
nic)
with actions.VerifyProtocol(self.volumes_client, volume_id) as cmd:
cmd.verify(connection['driver_volume_type'])
with actions.ConnectVolume(self.volumes_client, volume_id) as cmd:
brick_connector = self._brick_get_connector(
connection['driver_volume_type'], do_local_attach=True)
device_info = cmd.connect(brick_connector, connection['data'],
mountpoint, mode, hostname)
return device_info
def test_reserve_failed(self):
self.v_client.volumes.reserve.side_effect = (
cinder_exceptions.BadRequest(400))
try:
with volume_actions.Reserve(*self.command_args) as cmd:
cmd.reserve()
except cinder_exceptions.BadRequest:
self.v_client.volumes.unreserve.assert_called_once_with(
self.volume_id)
self.v_client.volumes.reserve.assert_called_once_with(self.volume_id)
def test_reserve(self):
with volume_actions.Reserve(*self.command_args) as cmd:
cmd.reserve()
self.v_client.volumes.reserve.assert_called_once_with(self.volume_id)