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# Copyright 2022 Red Hat, Inc.
# All Rights Reserved.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

from tempest import config
from tempest.lib import decorators

from cinder_tempest_plugin.api.volume import base

CONF = config.CONF


class VolumeDependencyTests(base.BaseVolumeTest):
    min_microversion = '3.40'

    @classmethod
    def setup_clients(cls):
        super(VolumeDependencyTests, cls).setup_clients()

    @decorators.idempotent_id('42e9df95-854b-4840-9d55-ae62f65e9b8e')
    def test_delete_source_volume(self):
        """Test basic dependency deletion

        * Create a volume with source_volid
        * Delete the source volume
        """
        source_volume = self.create_volume()
        kwargs = {'source_volid': source_volume['id']}
        cloned_volume = self.create_volume(**kwargs)
        self.assertEqual(source_volume['id'], cloned_volume['source_volid'])
        self.volumes_client.delete_volume(source_volume['id'])
        self.volumes_client.wait_for_resource_deletion(source_volume['id'])

    @decorators.idempotent_id('900d8ea5-2afd-4fe5-a0c3-fab4744f0d40')
    def test_delete_source_snapshot(self):
        """Test basic dependency deletion with snapshot

        * Create a snapshot from source volume
        * Create a volume from that snapshot
        * Delete the source snapshot
        * Delete the source volume
        """
        source_volume = self.create_volume()
        snapshot_source_volume = self.create_snapshot(source_volume['id'])
        kwargs = {'snapshot_id': snapshot_source_volume['id']}
        volume_from_snapshot = self.create_volume(**kwargs)
        self.assertEqual(volume_from_snapshot['snapshot_id'],
                         snapshot_source_volume['id'])

        self.snapshots_client.delete_snapshot(snapshot_source_volume['id'])
        self.snapshots_client.wait_for_resource_deletion(
            snapshot_source_volume['id'])
        self.volumes_client.delete_volume(source_volume['id'])
        self.volumes_client.wait_for_resource_deletion(source_volume['id'])

    def _delete_vol_and_wait(self, vol_id):
        self.volumes_client.delete_volume(vol_id)

        self.volumes_client.wait_for_resource_deletion(vol_id)

    def _delete_snap_and_wait(self, snap_id):
        self.snapshots_client.delete_snapshot(snap_id)

        self.snapshots_client.wait_for_resource_deletion(snap_id)

    @decorators.idempotent_id('f8278e5c-50ff-4a1d-8670-3ca0866d411a')
    def test_delete_dep_chain(self):
        """Test a complex chain of volume and snapshot dependency deletion."""
        volume_1 = self.create_volume()['id']
        snapshot_of_vol_1 = self.create_snapshot(volume_1)['id']

        volume_2_args = {'snapshot_id': snapshot_of_vol_1}
        volume_2 = self.create_volume(**volume_2_args)['id']

        snapshot_of_vol_2 = self.create_snapshot(volume_2)['id']

        volume_3_args = {'snapshot_id': snapshot_of_vol_2}
        volume_3 = self.create_volume(**volume_3_args)['id']

        volume_4_args = {'source_volid': volume_3}
        volume_4 = self.create_volume(**volume_4_args)['id']

        self._delete_snap_and_wait(snapshot_of_vol_1)
        self._delete_snap_and_wait(snapshot_of_vol_2)

        self._delete_vol_and_wait(volume_3)
        self._delete_vol_and_wait(volume_1)
        self._delete_vol_and_wait(volume_2)
        self._delete_vol_and_wait(volume_4)

    @decorators.idempotent_id('63447ef8-e667-4796-ba66-1b9b883af1f1')
    def test_delete_dep_chain_2(self):
        """Test a different chain of volume/snapshot dependency deletion."""
        volume_1 = self.create_volume()['id']
        snapshot_of_vol_1 = self.create_snapshot(volume_1)['id']

        volume_2_args = {'snapshot_id': snapshot_of_vol_1}
        volume_2 = self.create_volume(**volume_2_args)['id']

        snapshot_of_vol_2 = self.create_snapshot(volume_2)['id']

        volume_3_args = {'snapshot_id': snapshot_of_vol_2}
        volume_3 = self.create_volume(**volume_3_args)['id']

        self._delete_snap_and_wait(snapshot_of_vol_1)
        self._delete_snap_and_wait(snapshot_of_vol_2)

        self._delete_vol_and_wait(volume_1)
        self._delete_vol_and_wait(volume_2)
        self._delete_vol_and_wait(volume_3)