add celery checkin migration

migrations/versions/2a46ac75281c_add_celery_checkin.py

@@ -0,0 +1,29 @@
+"""add celery checkin
+
+Revision ID: 2a46ac75281c
+Revises: 7b0e9b8e0887
+Create Date: 2022-03-04 20:43:58.455920
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '2a46ac75281c'
+down_revision = '7b0e9b8e0887'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table('worker_checkins',
+    sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=False),
+    sa.Column('updated_at', sa.DateTime(timezone=True), server_default=sa.text('now()'), nullable=False),
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.PrimaryKeyConstraint('id', name=op.f('pk_worker_checkins'))
+    )
+
+
+def downgrade():
+    op.drop_table('worker_checkins')