new_contents: """
  
  Revision ID: 0358_operator_channel
  Revises: 0357_validate_constraint
  Create Date: 2021-06-09 13:44:12.479191
  
  """
  from alembic import op
  
  revision = '0358_operator_channel'
  down_revision = '0357_validate_constraint'
  
  
  def upgrade():
      op.execute("INSERT INTO broadcast_channel_types VALUES ('operator')")
  
  
  def downgrade():
      # This can't be downgraded if there are rows in service_broadcast_settings which
      # have the channel set to operator or if broadcasts have already been sent on the
      # operator channel - it would break foreign key constraints.
      op.execute("DELETE FROM broadcast_channel_types WHERE name = 'operator'")
  
subject: Add operator channel migration