Add unique db migration

Change-Id: Ib1336950b4f4000027593a87b9ac71c02967c6ca

blazar/db/migration/alembic_migrations/versions/9eec70cbc562_add_is_unique_field_in_extra_.py

@@ -0,0 +1,41 @@
+# Copyright 2024 OpenStack Foundation.
+#
+# 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.
+
+"""Add is_unique field in extra capabilities
+
+Revision ID: 9eec70cbc562
+Revises: d5a379ff6ba3
+Create Date: 2024-03-15 17:36:26.552008
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '9eec70cbc562'
+down_revision = 'd5a379ff6ba3'
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+def upgrade():
+    op.create_unique_constraint(None, 'devices', ['name'])
+    op.add_column('extra_capabilities', sa.Column('is_unique', sa.Boolean(), server_default=sa.text('false'), nullable=False))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    op.drop_column('extra_capabilities', 'is_unique')
+    op.drop_constraint(None, 'devices', type_='unique')
+    # ### end Alembic commands ###

blazar/db/sqlalchemy/models.py

@@ -326,7 +326,7 @@ def validate_capability_value(self, key, capability_id):
             ).first()
             if existing_capability:
                 raise ValueError(
-                    f"{extra_capability.capability_name} must be unique. "
+                    f"Values for {extra_capability.capability_name} must be unique. "
                     f"Please select unique {extra_capability.capability_name} for "
                     f"{self.computehost_id}"
                 )