Working on major restructuring

lib/logging/context.rb

@@ -0,0 +1,18 @@
+module GameServer
+  module Logging
+    module Context
+      def self.with(data)
+        old = Thread.current[:log_ctx]
+        Thread.current[:log_ctx] = data
+        yield
+      ensure
+        Thread.current[:log_ctx] = old
+      end
+
+      def self.current
+        ctx = Thread.current[:log_ctx]
+        ctx ? ctx.map { |k,v| "#{k}=#{v} " }.join : ""
+      end
+    end
+  end
+end

lib/logging/formatter.rb

@@ -0,0 +1,11 @@
+require "time"
+
+module GameServer
+  module Logging
+    class Formatter
+      def call(severity, time, _, msg)
+        "[#{time.utc.iso8601}] #{severity} #{Context.current}#{msg}\n"
+      end
+    end
+  end
+end

lib/logging/logger.rb

@@ -0,0 +1,19 @@
+require "logger"
+
+module GameServer
+  module Logging
+    def self.setup
+      FileUtils.mkdir_p("log")
+      file = File.open("log/development.log", "a")
+      file.sync = true
+
+      @logger = Logger.new(file)
+      @logger.level = Logger::DEBUG
+      @logger.formatter = Formatter.new
+    end
+
+    def self.logger
+      @logger
+    end
+  end
+end