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OpenStack Study: test_volume_glance_metadata.py

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# Copyright (c) 2011 Zadara Storage Inc.

# Copyright (c) 2011 OpenStack Foundation

# Copyright 2011 University of Southern California

# 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.

"""

Unit Tests for volume types extra specs code

"""

from cinder import context

from cinder import db

from cinder import exception

from cinder import test

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class VolumeGlanceMetadataTestCase(test.TestCase):

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    def setUp(self):

        super(VolumeGlanceMetadataTestCase, self).setUp()

        self.ctxt = context.get_admin_context()

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    def test_vol_glance_metadata_bad_vol_id(self):

        ctxt = context.get_admin_context()

        self.assertRaises(exception.VolumeNotFound,

                          db.volume_glance_metadata_create,

                          ctxt, 1, 'key1', 'value1')

        self.assertRaises(exception.VolumeNotFound,

                          db.volume_glance_metadata_get, ctxt, 1)

        db.volume_glance_metadata_delete_by_volume(ctxt, 10)

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    def test_vol_update_glance_metadata(self):

        ctxt = context.get_admin_context()

        db.volume_create(ctxt, {'id': 1})

        db.volume_create(ctxt, {'id': 2})

        vol_metadata = db.volume_glance_metadata_create(ctxt, 1, 'key1',

                                                        'value1')

        vol_metadata = db.volume_glance_metadata_create(ctxt, 2, 'key1',

                                                        'value1')

        vol_metadata = db.volume_glance_metadata_create(ctxt, 2,

                                                        'key2',

                                                        'value2')

        vol_metadata = db.volume_glance_metadata_create(ctxt, 2,

                                                        'key3',

                                                        123)

        expected_metadata_1 = {'volume_id': '1',

                               'key': 'key1',

                               'value': 'value1'}

        metadata = db.volume_glance_metadata_get(ctxt, 1)

        self.assertEqual(len(metadata), 1)

        for key, value in expected_metadata_1.items():

            self.assertEqual(metadata[0][key], value)

        expected_metadata_2 = ({'volume_id': '2',

                                'key': 'key1',

                                'value': 'value1'},

                               {'volume_id': '2',

                                'key': 'key2',

                                'value': 'value2'},

                               {'volume_id': '2',

                                'key': 'key3',

                                'value': '123'})

        metadata = db.volume_glance_metadata_get(ctxt, 2)

        self.assertEqual(len(metadata), 3)

        for expected, meta in zip(expected_metadata_2, metadata):

            for key, value in expected.iteritems():

                self.assertEqual(meta[key], value)

        self.assertRaises(exception.GlanceMetadataExists,

                          db.volume_glance_metadata_create,

                          ctxt, 1, 'key1', 'value1a')

        metadata = db.volume_glance_metadata_get(ctxt, 1)

        self.assertEqual(len(metadata), 1)

        for key, value in expected_metadata_1.items():

            self.assertEqual(metadata[0][key], value)

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    def test_vols_get_glance_metadata(self):

        ctxt = context.get_admin_context()

        db.volume_create(ctxt, {'id': '1'})

        db.volume_create(ctxt, {'id': '2'})

        db.volume_create(ctxt, {'id': '3'})

        db.volume_glance_metadata_create(ctxt, '1', 'key1', 'value1')

        db.volume_glance_metadata_create(ctxt, '2', 'key2', 'value2')

        db.volume_glance_metadata_create(ctxt, '2', 'key22', 'value22')

        metadata = db.volume_glance_metadata_get_all(ctxt)

        self.assertEqual(len(metadata), 3)

        self._assert_metadata_equals('1', 'key1', 'value1', metadata[0])

        self._assert_metadata_equals('2', 'key2', 'value2', metadata[1])

        self._assert_metadata_equals('2', 'key22', 'value22', metadata[2])

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    def _assert_metadata_equals(self, volume_id, key, value, observed):

        self.assertEqual(volume_id, observed.volume_id)

        self.assertEqual(key, observed.key)

        self.assertEqual(value, observed.value)

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    def test_vol_delete_glance_metadata(self):

        ctxt = context.get_admin_context()

        db.volume_create(ctxt, {'id': 1})

        db.volume_glance_metadata_delete_by_volume(ctxt, 1)

        vol_metadata = db.volume_glance_metadata_create(ctxt, 1, 'key1',

                                                        'value1')

        db.volume_glance_metadata_delete_by_volume(ctxt, 1)

        self.assertRaises(exception.GlanceMetadataNotFound,

                          db.volume_glance_metadata_get, ctxt, 1)

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    def test_vol_glance_metadata_copy_to_snapshot(self):

        ctxt = context.get_admin_context()

        db.volume_create(ctxt, {'id': 1})

        db.snapshot_create(ctxt, {'id': 100, 'volume_id': 1})

        vol_meta = db.volume_glance_metadata_create(ctxt, 1, 'key1',

                                                    'value1')

        db.volume_glance_metadata_copy_to_snapshot(ctxt, 100, 1)

        expected_meta = {'snapshot_id': '100',

                         'key': 'key1',

                         'value': 'value1'}

        for meta in db.volume_snapshot_glance_metadata_get(ctxt, 100):

            for (key, value) in expected_meta.items():

                self.assertEqual(meta[key], value)

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    def test_vol_glance_metadata_copy_from_volume_to_volume(self):

        ctxt = context.get_admin_context()

        db.volume_create(ctxt, {'id': 1})

        db.volume_create(ctxt, {'id': 100, 'source_volid': 1})

        vol_meta = db.volume_glance_metadata_create(ctxt, 1, 'key1',

                                                    'value1')

        db.volume_glance_metadata_copy_from_volume_to_volume(ctxt, 1, 100)

        expected_meta = {'key': 'key1',

                         'value': 'value1'}

        for meta in db.volume_glance_metadata_get(ctxt, 100):

            for (key, value) in expected_meta.items():

                self.assertEqual(meta[key], value)

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    def test_volume_glance_metadata_copy_to_volume(self):

        vol1 = db.volume_create(self.ctxt, {})

        vol2 = db.volume_create(self.ctxt, {})

        db.volume_glance_metadata_create(self.ctxt, vol1['id'], 'm1', 'v1')

        snapshot = db.snapshot_create(self.ctxt, {'volume_id': vol1['id']})

        db.volume_glance_metadata_copy_to_snapshot(self.ctxt, snapshot['id'],

                                                   vol1['id'])

        db.volume_glance_metadata_copy_to_volume(self.ctxt, vol2['id'],

                                                 snapshot['id'])

        metadata = db.volume_glance_metadata_get(self.ctxt, vol2['id'])

        metadata = dict([(m['key'], m['value']) for m in metadata])

        self.assertEqual(metadata, {'m1': 'v1'})

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    def test_volume_snapshot_glance_metadata_get_nonexistent(self):

        vol = db.volume_create(self.ctxt, {})

        snapshot = db.snapshot_create(self.ctxt, {'volume_id': vol['id']})

        self.assertRaises(exception.GlanceMetadataNotFound,

                          db.volume_snapshot_glance_metadata_get,

                          self.ctxt, snapshot['id'])