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A DAG-Based Workflow Orchestration Engine for Elixir

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gust lib gust flows dag.ex
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lib/gust/flows/dag.ex 

defmodule Gust.Flows.Dag do

  @moduledoc false

  use Ecto.Schema

  import Ecto.Changeset



  schema "dags" do

    field :name, :string

    field :enabled, :boolean, default: true

    has_many :runs, Gust.Flows.Run



    timestamps(type: :utc_datetime)

  end



  @doc false

  def changeset(dag, attrs) do

    dag

    |> cast(attrs, [:name, :enabled])

    |> validate_required([:name])

    |> validate_format(:name, ~r/^[a-z0-9_]+$/,

      message: "must be lowercase, no spaces, only letters, numbers, and underscores"

    )

    |> unique_constraint(:name)

  end

end