updated authentication of instances

migrations/versions/add_connection_token.py

@@ -0,0 +1,24 @@
+"""add connection_token column
+
+Revision ID: add_connection_token
+Revises: fix_updated_at_trigger
+Create Date: 2024-03-19 13:00:00.000000
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'add_connection_token'
+down_revision = 'fix_updated_at_trigger'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column('instances', sa.Column('connection_token', sa.String(64), nullable=True, unique=True))
+
+
+def downgrade():
+    op.drop_column('instances', 'connection_token')