feat(proxy): rewrite the meta module to support hot spares

migrations/versions/278bcfb487d3_add_hot_spare_pool.py

@@ -0,0 +1,29 @@
+"""Add hot spare pool
+
+Revision ID: 278bcfb487d3
+Revises: 2d747ffb9928
+Create Date: 2023-05-30 16:08:37.770371
+
+"""
+from alembic import op
+from sqlalchemy.sql import text
+
+# revision identifiers, used by Alembic.
+revision = '278bcfb487d3'
+down_revision = '2d747ffb9928'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # Add SQL here
+    sql = text("""INSERT INTO pool VALUES (
+                     -1, 'Hot spares (reserve)', NOW(), NOW(), NULL, 'hotspare', 
+                     md5(to_char(NOW(), 'YYYY-MM-DD HH24:MI:SS.US')), NULL) ON CONFLICT (id) DO NOTHING;""")
+    op.execute(sql)
+
+
+def downgrade():
+    # SQL to undo the changes
+    sql = text("""DELETE FROM pool WHERE id = -1;""")
+    op.execute(sql)