Fix 'project_share_type_quotas' DB table unique constraint

It should be possible to use share type quotas in each project/tenant.
But we get error trying to set share types quota in second+ project
for the same share type. It happens so due to the bug in DB schema,
where we don't have 'project_id' in unique constraint.
So, add new DB migration that fixes unique constraint and cover it with
DB and tempest tests.

Change-Id: I1405ced4e12b40904b7227c9f6285e2775005f8a
Closes-Bug: #1722707

manila/db/migrations/alembic/versions/829a09b0ddd4_fix_project_share_type_quotas_unique_constraint.py

@@ -0,0 +1,45 @@
+# 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.
+
+"""Fix 'project_share_type_quotas' unique constraint
+
+Revision ID: 829a09b0ddd4
+Revises: b516de97bfee
+Create Date: 2017-10-12 20:15:51.267488
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '829a09b0ddd4'
+down_revision = 'b516de97bfee'
+
+from alembic import op
+
+TABLE_NAME = 'project_share_type_quotas'
+UNIQUE_CONSTRAINT_NAME = 'uc_quotas_per_share_types'
+ST_FK_NAME = 'share_type_id_fk'
+
+
+def upgrade():
+    op.drop_constraint(ST_FK_NAME, TABLE_NAME, type_='foreignkey')
+    op.drop_constraint(UNIQUE_CONSTRAINT_NAME, TABLE_NAME, type_='unique')
+    op.create_foreign_key(
+        ST_FK_NAME, TABLE_NAME, 'share_types', ['share_type_id'], ['id'])
+    op.create_unique_constraint(
+        UNIQUE_CONSTRAINT_NAME, TABLE_NAME,
+        ['share_type_id', 'resource', 'deleted', 'project_id'])
+
+
+def downgrade():
+    # NOTE(vponomaryov): no need to implement old behaviour as it was bug, and,
+    # moreover, not compatible with data from upgraded version.
+    pass

manila/tests/db/migrations/alembic/migrations_data_checks.py

@@ -2466,3 +2466,37 @@ class ProjectShareTypesQuotasChecks(BaseMigrationChecks):
             self.test_case.assertGreater(db_result.rowcount, 0)
             for row in db_result:
                 self.test_case.assertFalse(hasattr(row, 'share_type_id'))
+
+
+@map_to_migration('829a09b0ddd4')
+class FixProjectShareTypesQuotasUniqueConstraintChecks(BaseMigrationChecks):
+    st_record_id = uuidutils.generate_uuid()
+
+    def setup_upgrade_data(self, engine):
+        # Create share type
+        self.st_data = {
+            'id': self.st_record_id,
+            'name': uuidutils.generate_uuid(),
+            'deleted': "False",
+        }
+        st_table = utils.load_table('share_types', engine)
+        engine.execute(st_table.insert(self.st_data))
+
+    def check_upgrade(self, engine, data):
+        for project_id in ('x' * 255, 'x'):
+            # Create share type quota
+            self.quota_data = {
+                'project_id': project_id,
+                'resource': 'y' * 255,
+                'hard_limit': 987654321,
+                'created_at': datetime.datetime(2017, 4, 11, 18, 5, 58),
+                'updated_at': None,
+                'deleted_at': None,
+                'deleted': 0,
+                'share_type_id': self.st_record_id,
+            }
+            new_table = utils.load_table('project_share_type_quotas', engine)
+            engine.execute(new_table.insert(self.quota_data))
+
+    def check_downgrade(self, engine):
+        pass

manila_tempest_tests/tests/api/admin/test_quotas.py

@@ -247,6 +247,30 @@ class SharesAdminQuotasUpdateTest(base.BaseSharesAdminTest):
         for q in ('shares', 'gigabytes', 'snapshots', 'snapshot_gigabytes'):
             self.assertEqual(int(quotas[q]) - 1, current_quotas[q])
 
+    @tc.attr(base.TAG_POSITIVE, base.TAG_API)
+    @base.skip_if_microversion_lt("2.39")
+    def test_update_share_type_quota_in_two_projects(self):
+        """Regression test for bug/1722707"""
+        share_type = self._create_share_type()
+        client1 = self.get_client_with_isolated_creds(client_version='2')
+        client2 = self.get_client_with_isolated_creds(client_version='2')
+
+        for client in (client1, client2):
+            # Update quotas
+            for q in ('shares', 'gigabytes', 'snapshots',
+                      'snapshot_gigabytes'):
+                # Set new quota
+                updated = client.update_quotas(
+                    client.tenant_id, share_type=share_type['id'], **{q: 0})
+                self.assertEqual(0, int(updated[q]))
+
+            current_quotas = client.show_quotas(
+                client.tenant_id, share_type=share_type['id'])
+
+            for q in ('shares', 'gigabytes', 'snapshots',
+                      'snapshot_gigabytes'):
+                self.assertEqual(0, int(current_quotas[q]))
+
     @tc.attr(base.TAG_POSITIVE, base.TAG_API)
     def test_update_tenant_quota_snapshots(self):
         # get current quotas