honkoma/priv/repo/migrations/20170418200143_create_webssub_server_subscription.exs

defmodule Pleroma.Repo.Migrations.CreateWebsubServerSubscription do
  use Ecto.Migration

  def change do
    create_if_not_exists table(:websub_server_subscriptions) do
      add :topic, :string
      add :callback, :string
      add :secret, :string
      add :valid_until, :naive_datetime
      add :state, :string

      timestamps()
    end
  end
end