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Build and Deploy Elixir releases to Kubernetes via Helm

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mandrag lib mandrag.ex
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lib/mandrag.ex 

defmodule Mandrag do

  @moduledoc """

  Documentation for Mandrag.

  """



  def image, do: Application.get_env(:mandrag, :image) || name()



  def app, do: Application.get_env(:mandrag, :app)



  defp repo, do: Application.get_env(:mandrag, :repo)



  def name, do: app() |> Atom.to_string



  def docker(args), do: Mix.Shell.IO.cmd("docker " <> args)



  def kubectl(args), do: Mix.Shell.IO.cmd("kubectl " <> args)



  def latest, do: "#{image()}:latest"



  def current, do: "#{image()}:#{Mix.Project.config[:version]}"



  def pod do

    {output, _} = System.cmd("kubectl", ~w"get pods")

    output |> String.split("\n") |> Enum.find(&match/1) |> pod_name

  end



  def migrate do

    if function_exported?(Ecto.Migrator, :run, 4) do

      {:ok, _} = Application.ensure_all_started(app())

      path = Application.app_dir(app(), "priv/repo/migrations")

      Ecto.Migrator.run(repo(), path, :up, all: true)

    end

  end



  defp match(line), do: line =~ name()



  defp pod_name(nil), do: nil

  defp pod_name(pod_line), do: pod_line |> String.split(" ") |> Enum.at(0)

end