Start decoupling logger

src/kemal.cr

@@ -5,8 +5,6 @@ at_exit do
   Kemal::CLI.new
   config = Kemal.config
   if config.logging
-    logger = Kemal::LogHandler.new
-    config.logger = logger
     config.logger.write "[#{config.env}] Kemal is ready to lead at #{config.scheme}://#{config.host_binding}:#{config.port}\n"
   end
   config.add_handler Kemal::StaticFileHandler.new(config.public_folder)

src/kemal/config.cr

@@ -2,7 +2,7 @@ module Kemal
   class Config
     INSTANCE = Config.new
     HANDLERS = [] of HTTP::Handler
-    property host_binding, ssl, port, env, public_folder, logging
+    property host_binding, ssl, port, env, public_folder, logging, logger
 
     def initialize
       @host_binding = "0.0.0.0" unless @host_binding
@@ -10,7 +10,7 @@ module Kemal
       @env = "development" unless @env
       @public_folder = "./public"
       @logging = true
-      @logger = nil
+      @logger = Kemal::LogHandler.new(@env) unless @logging
     end
 
     def scheme

src/kemal/log_handler.cr

@@ -2,11 +2,10 @@ require "colorize"
 require "http"
 
 class Kemal::LogHandler < HTTP::Handler
-  INSTANCE = new
+  # INSTANCE = new
   getter handler
 
-  def initialize
-    @env = Kemal.config.env
+  def initialize(@env)
     @handler = if @env == "production"
                  handler = File.new("kemal.log", "a")
                  handler.flush_on_newline = true

src/kemal/route_handler.cr

@@ -35,7 +35,7 @@ class Kemal::RouteHandler < HTTP::Handler
         context.response.print body
         return context
       rescue ex
-        Kemal::LogHandler::INSTANCE.write "Exception: #{ex.to_s}\n"
+        # Kemal.config.logger.write "Exception: #{ex.to_s}\n"
         return render_500(context, ex.to_s)
       end
     end