Packages

electric

1.0.21
1.7.8 1.7.7 1.7.6 1.7.5 1.7.4 1.7.3 1.7.2 1.7.1 1.7.0 1.6.10 1.6.9 1.6.8 1.6.7 1.6.6 1.6.5 1.6.4 1.6.3 1.6.2 1.6.1 1.6.0 1.5.1 1.5.0 1.4.16 1.4.16-beta-1 1.4.15 1.4.14 1.4.13 1.4.12 1.4.11 1.4.10 1.4.8 1.4.7 1.4.6 1.4.5 1.4.4 1.4.3 1.4.2 1.4.1 1.4.0 1.3.4 1.3.3 1.3.2 1.2.4 1.2.3 1.2.2 1.2.1 1.2.0 1.1.14 1.1.13 1.1.12 1.1.11 1.1.10 1.1.9 1.1.8 1.1.7 1.1.6 retired 1.1.5 retired 1.1.4 retired 1.1.3 retired 1.1.2 1.1.1 1.1.0 1.0.24 1.0.23 1.0.22 1.0.21 1.0.20 1.0.19 1.0.18 1.0.17 1.0.15 1.0.13 1.0.12 1.0.11 1.0.10 1.0.9 1.0.5 1.0.4 1.0.3 1.0.2 1.0.1 1.0.0 1.0.0-beta.23 1.0.0-beta.22 1.0.0-beta.20 1.0.0-beta.19 1.0.0-beta.18 1.0.0-beta.17 1.0.0-beta.16 1.0.0-beta.15 1.0.0-beta.14 1.0.0-beta.13 1.0.0-beta.12 1.0.0-beta.11 1.0.0-beta.10 1.0.0-beta.9 1.0.0-beta.8 1.0.0-beta.7 1.0.0-beta.6 1.0.0-beta.5 1.0.0-beta.4 1.0.0-beta.3 1.0.0-beta.2 1.0.0-beta.1 0.9.5 0.9.4 0.9.3 0.9.2 0.9.1 0.9.0 0.8.1 0.8.0 0.7.7 0.7.6 0.7.5 0.7.4 0.7.3 0.7.2 0.7.1 0.7.0 0.6.3 0.6.2 0.6.1 0.5.2 0.4.4

Postgres sync engine. Sync little subsets of your Postgres data into local apps and services.

HexDocs

Current section

Files

Jump to
Readme
125 Versions
25 Dependencies
Dependants
Files
Activity
electric lib electric plug health_check_plug.ex
Raw

lib/electric/plug/health_check_plug.ex 

defmodule Electric.Plug.HealthCheckPlug do

  alias Plug.Conn

  alias Electric.StatusMonitor

  require Logger

  use Plug.Builder



  plug :fetch_query_params

  plug :check_service_status

  plug :put_resp_content_type, "application/json"

  plug :put_cache_headers

  plug :send_response



  # Match service status to a status code and status message,

  # keeping the message name decoupled from the internal representation

  # of the status to ensure the API is stable

  defp check_service_status(%Conn{assigns: %{config: config}} = conn, _) do

    {status_code, status_text} =

      case StatusMonitor.status(config[:stack_id]) do

        :waiting -> {202, "waiting"}

        :starting -> {202, "starting"}

        :active -> {200, "active"}

      end



    conn |> assign(:status_text, status_text) |> assign(:status_code, status_code)

  end



  defp put_cache_headers(conn, _) do

    put_resp_header(conn, "cache-control", "no-cache, no-store, must-revalidate")

  end



  defp send_response(%Conn{assigns: assigns} = conn, _) do

    send_resp(conn, assigns.status_code, Jason.encode!(%{status: assigns.status_text}))

  end

end