defmodule Elstat.Adapter.Ping do
  @behaviour Elstat.Adapter
 
  def adapter_spec do
    %{
      db_columns: [:timestamp, :status]
    }
  end
  
  def check(args) do
    {cmd_output, _} = System.cmd("ping", ["-c", "1", args.address])
    alive? = not Regex.match?(~r/100(\.0)?% packet loss/, cmd_output)
    {:ok, {:bool, alive?}}
  end

  def transform_val({:bool, alive?}) do
    [alive?]
  end
 
end