From 96a97957b4fa459e0303b2e6c98925e23b9c3003 Mon Sep 17 00:00:00 2001
From: Alan Chen <alan@am.is>
Date: Mon, 11 Sep 2017 16:55:30 +0800
Subject: [PATCH] log: add logging package

---
 log/log.go | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 log/log.go

diff --git a/log/log.go b/log/log.go
new file mode 100644
index 00000000..0b61e2cb
--- /dev/null
+++ b/log/log.go
@@ -0,0 +1,59 @@
+// Copyright 2017 AMIS Technologies
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package log
+
+import (
+	"os"
+
+	"github.com/inconshreveable/log15"
+)
+
+var defaultLogger = log15.New()
+
+func init() {
+	defaultLogger.SetHandler(
+		log15.MultiHandler(
+			log15.CallerFileHandler(log15.StreamHandler(
+				os.Stdout, log15.TerminalFormat(),
+			)),
+		),
+	)
+}
+
+func New(ctx ...interface{}) log15.Logger {
+	return defaultLogger.New(ctx...)
+}
+
+func Info(msg string, ctx ...interface{}) {
+	defaultLogger.Info(msg, ctx...)
+}
+
+func Debug(msg string, ctx ...interface{}) {
+	defaultLogger.Debug(msg, ctx...)
+}
+
+func Warn(msg string, ctx ...interface{}) {
+	defaultLogger.Warn(msg, ctx)
+}
+
+func Error(msg string, ctx ...interface{}) {
+	defaultLogger.Error(msg, ctx...)
+}
+
+func Fatal(msg string, ctx ...interface{}) {
+	defaultLogger.Crit(msg, ctx...)
+}