add default formatter

Author: rlopzc

CHANGELOG.md

@@ -0,0 +1,5 @@
+## Unreleased
+
+## 0.4.2
+
+- Read logger config format. If there is none, default to a simple format.

lib/logger_exporter/formatters/basic_formatter.ex

@@ -2,13 +2,13 @@ defmodule LoggerExporter.Formatters.BasicFormatter do
   @moduledoc """
   Basic formatter.
 
-  It formats the log with: "$time [$level] $message $metadata"
+  If there is no `:logger -> :console -> :format`, it sets the format to: "$time $metadata[$level] $message"
   """
   @behaviour LoggerExporter.Formatters.Formatter
 
   @impl true
   def format_event(level, msg, timestamp, log_metada, metadata_keys) do
-    "$time [$level] $message $metadata"
+    default_formatter()
     |> Logger.Formatter.compile()
     |> Logger.Formatter.format(
       level,
@@ -18,4 +18,10 @@ defmodule LoggerExporter.Formatters.BasicFormatter do
     )
     |> IO.chardata_to_string()
   end
+
+  defp default_formatter do
+    :logger
+    |> Application.get_env(:console)
+    |> Keyword.get(:format, "$time $metadata[$level] $message")
+  end
 end

mix.exs

@@ -2,7 +2,7 @@ defmodule LoggerExporter.MixProject do
   use Mix.Project
 
   @source_url "https://github.com/romariolopezc/logger_exporter"
-  @version "0.4.1"
+  @version "0.4.2"
 
   def project do
     [