320 lines
11 KiB
Python
320 lines
11 KiB
Python
# Copyright 2012 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from oslo_utils import timeutils
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from cinder import exception
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from cinder import objects
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from cinder.objects import fields
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from cinder.tests.unit.brick import fake_lvm
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from cinder import utils
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from cinder.volume import driver
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from cinder.volume.drivers import lvm
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from cinder.zonemanager import utils as fczm_utils
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# TODO(e0ne): inherit from driver.VolumeDriver and fix unit-tests
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class FakeLoggingVolumeDriver(lvm.LVMVolumeDriver):
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"""Logs calls instead of executing."""
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def __init__(self, *args, **kwargs):
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super(FakeLoggingVolumeDriver, self).__init__(
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execute=self.fake_execute, *args, **kwargs)
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self.backend_name = 'fake'
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self.protocol = 'fake'
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self.vg = fake_lvm.FakeBrickLVM('cinder-volumes', False,
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None, 'default',
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self.fake_execute)
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@utils.trace_method
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def check_for_setup_error(self):
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"""No setup necessary in fake mode."""
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pass
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@utils.trace_method
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def create_volume(self, volume):
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pass
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@utils.trace_method
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def delete_volume(self, volume):
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pass
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@utils.trace_method
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def create_snapshot(self, snapshot):
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pass
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@utils.trace_method
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def delete_snapshot(self, snapshot):
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pass
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@utils.trace_method
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def ensure_export(self, context, volume):
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pass
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@utils.trace_method
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def create_export(self, context, volume, connector):
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pass
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@utils.trace_method
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def remove_export(self, context, volume):
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pass
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@utils.trace_method
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def create_export_snapshot(self, context, snapshot):
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pass
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@utils.trace_method
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def remove_export_snapshot(self, context, snapshot):
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pass
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@utils.trace_method
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def terminate_connection_snapshot(self, snapshot, connector):
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pass
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@utils.trace_method
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def create_cloned_volume(self, volume, src_vol):
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pass
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@utils.trace_method
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def create_volume_from_snapshot(self, volume, snapshot):
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pass
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@utils.trace_method
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def initialize_connection(self, volume, connector):
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# NOTE(thangp): There are several places in the core cinder code where
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# the volume passed through is a dict and not an oslo_versionedobject.
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# We need to react appropriately to what type of volume is passed in,
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# until the switch over to oslo_versionedobjects is complete.
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if isinstance(volume, objects.Volume):
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volume_metadata = volume.admin_metadata
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else:
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volume_metadata = {}
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for metadata in volume['volume_admin_metadata']:
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volume_metadata[metadata['key']] = metadata['value']
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access_mode = volume_metadata.get('attached_mode')
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if access_mode is None:
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access_mode = ('ro'
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if volume_metadata.get('readonly') == 'True'
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else 'rw')
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return {'driver_volume_type': 'iscsi',
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'data': {'access_mode': access_mode}}
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@utils.trace_method
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def initialize_connection_snapshot(self, snapshot, connector):
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return {
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'driver_volume_type': 'iscsi',
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}
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@utils.trace_method
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def terminate_connection(self, volume, connector, **kwargs):
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pass
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def _update_volume_stats(self):
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data = {'volume_backend_name': self.backend_name,
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'vendor_name': 'Open Source',
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'driver_version': self.VERSION,
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'storage_protocol': self.protocol,
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'pools': []}
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fake_pool = {'pool_name': data['volume_backend_name'],
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'total_capacity_gb': 'infinite',
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'free_capacity_gb': 'infinite',
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'provisioned_capacity_gb': 0,
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'reserved_percentage': 100,
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'QoS_support': False,
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'filter_function': self.get_filter_function(),
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'goodness_function': self.get_goodness_function(),
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'consistencygroup_support': False,
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'replication_enabled': False}
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data['pools'].append(fake_pool)
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self._stats = data
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@staticmethod
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def fake_execute(cmd, *_args, **_kwargs):
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"""Execute that simply logs the command."""
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return (None, None)
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class FakeISERDriver(FakeLoggingVolumeDriver):
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def __init__(self, *args, **kwargs):
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super(FakeISERDriver, self).__init__(execute=self.fake_execute,
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*args, **kwargs)
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def initialize_connection(self, volume, connector):
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return {
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'driver_volume_type': 'iser',
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'data': {}
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}
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class FakeFibreChannelDriver(driver.FibreChannelDriver):
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@fczm_utils.add_fc_zone
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def initialize_connection(self, volume, connector):
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return {
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'driver_volume_type': 'fibre_channel',
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'data': {
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'initiator_target_map': {'fake_wwn': ['fake_wwn2']},
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}}
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@fczm_utils.add_fc_zone
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def no_zone_initialize_connection(self, volume, connector):
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"""This shouldn't call the ZM."""
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return {
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'driver_volume_type': 'bogus',
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'data': {
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'initiator_target_map': {'fake_wwn': ['fake_wwn2']},
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}}
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@fczm_utils.remove_fc_zone
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def terminate_connection(self, volume, connector, **kwargs):
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return {
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'driver_volume_type': 'fibre_channel',
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'data': {
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'initiator_target_map': {'fake_wwn': ['fake_wwn2']},
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}}
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@fczm_utils.remove_fc_zone
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def no_zone_terminate_connection(self, volume, connector, **kwargs):
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return {
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'driver_volume_type': 'bogus',
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'data': {
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'initiator_target_map': {'fake_wwn': ['fake_wwn2']},
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}}
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class FakeGateDriver(lvm.LVMVolumeDriver):
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"""Class designation for FakeGateDriver.
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FakeGateDriver is for TESTING ONLY. There are a few
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driver features such as CG and replication that are not
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supported by the reference driver LVM currently. Adding
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those functions in this fake driver will help detect
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problems when changes are introduced in those functions.
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Implementation of this driver is NOT meant for production.
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They are implemented simply to make sure calls to the driver
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functions are passing in the correct parameters, and the
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results returned by the driver are handled properly by the manager.
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"""
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def __init__(self, *args, **kwargs):
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super(FakeGateDriver, self).__init__(*args, **kwargs)
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def _update_volume_stats(self):
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super(FakeGateDriver, self)._update_volume_stats()
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self._stats["pools"][0]["consistencygroup_support"] = True
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self._stats["pools"][0]["replication_enabled"] = True
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# NOTE(xyang): Consistency Group functions implemented below
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# are for testing purpose only. Data consistency cannot be
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# achieved by running these functions.
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def create_consistencygroup(self, context, group):
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"""Creates a consistencygroup."""
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# A consistencygroup entry is already created in db
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# This driver just returns a status
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now = timeutils.utcnow()
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model_update = {'status': fields.ConsistencyGroupStatus.AVAILABLE,
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'updated_at': now}
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return model_update
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def create_consistencygroup_from_src(self, context, group, volumes,
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cgsnapshot=None, snapshots=None,
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soure_cg=None, source_vols=None):
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"""Creates a consistencygroup from cgsnapshot or source cg."""
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for vol in volumes:
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try:
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if snapshots:
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for snapshot in snapshots:
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if vol['snapshot_id'] == snapshot['id']:
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self.create_volume_from_snapshot(vol, snapshot)
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break
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except Exception:
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raise
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try:
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if source_vols:
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for source_vol in source_vols:
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if vol['source_volid'] == source_vol['id']:
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self.create_cloned_volume(vol, source_vol)
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break
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except Exception:
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raise
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return None, None
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def delete_consistencygroup(self, context, group, volumes):
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"""Deletes a consistencygroup and volumes in the group."""
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model_update = {'status': group.status}
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volume_model_updates = []
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for volume_ref in volumes:
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volume_model_update = {'id': volume_ref.id}
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try:
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self.remove_export(context, volume_ref)
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self.delete_volume(volume_ref)
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volume_model_update['status'] = 'deleted'
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except exception.VolumeIsBusy:
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volume_model_update['status'] = 'available'
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except Exception:
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volume_model_update['status'] = 'error'
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model_update['status'] = fields.ConsistencyGroupStatus.ERROR
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volume_model_updates.append(volume_model_update)
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return model_update, volume_model_updates
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def update_consistencygroup(self, context, group,
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add_volumes=None, remove_volumes=None):
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"""Updates a consistency group."""
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return None, None, None
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def create_cgsnapshot(self, context, cgsnapshot, snapshots):
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"""Creates a cgsnapshot.
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Snapshots created here are NOT consistent. This is for
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testing purpose only.
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"""
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model_update = {'status': 'available'}
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snapshot_model_updates = []
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for snapshot in snapshots:
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snapshot_model_update = {'id': snapshot.id}
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try:
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self.create_snapshot(snapshot)
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snapshot_model_update['status'] = 'available'
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except Exception:
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snapshot_model_update['status'] = 'error'
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model_update['status'] = 'error'
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snapshot_model_updates.append(snapshot_model_update)
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return model_update, snapshot_model_updates
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def delete_cgsnapshot(self, context, cgsnapshot, snapshots):
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"""Deletes a cgsnapshot."""
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model_update = {'status': cgsnapshot.status}
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snapshot_model_updates = []
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for snapshot in snapshots:
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snapshot_model_update = {'id': snapshot.id}
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try:
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self.delete_snapshot(snapshot)
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snapshot_model_update['status'] = 'deleted'
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except exception.SnapshotIsBusy:
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snapshot_model_update['status'] = 'available'
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except Exception:
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snapshot_model_update['status'] = 'error'
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model_update['status'] = 'error'
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snapshot_model_updates.append(snapshot_model_update)
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return model_update, snapshot_model_updates
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