Added JSON logging

Signed-off-by: Vishal Rana <vr@labstack.com>

echo.go

@@ -267,8 +267,8 @@ func (e *Echo) SetLogOutput(w io.Writer) {
 	e.logger.SetOutput(w)
 }
 
-// SetLogLevel sets the log level for the logger. Default value `3` (ERROR).
+// SetLogLevel sets the log level for the logger. Default value ERROR.
-func (e *Echo) SetLogLevel(l uint8) {
+func (e *Echo) SetLogLevel(l glog.Lvl) {
 	e.logger.SetLevel(l)
 }
 

glide.lock

@@ -1,12 +1,12 @@
 hash: 21820434709470e49c64df0f854d3352088ca664d193e29bc6cd434518c27a7c
-updated: 2016-06-06T13:46:58.552123246-07:00
+updated: 2016-06-08T17:12:40.290079497-07:00
 imports:
 - name: github.com/davecgh/go-spew
   version: 5215b55f46b2b919f50a1df0eaa5886afe4e3b3d
   subpackages:
   - spew
 - name: github.com/dgrijalva/jwt-go
-  version: 9b486c879bab3fde556ce8c27d9a2bb05d5b2c60
+  version: c04502f106d7c5b3fae17c5da49a1bbdd3006b3c
 - name: github.com/klauspost/compress
   version: 14eb9c4951195779ecfbec34431a976de7335b0a
   subpackages:
@@ -18,7 +18,7 @@ imports:
 - name: github.com/klauspost/crc32
   version: 19b0b332c9e4516a6370a0456e6182c3b5036720
 - name: github.com/labstack/gommon
-  version: c21cbdaff511c8f7c27dab37216552d8e7ea7bde
+  version: 7949d308ed2888a634cf124a2f0755e0867b9e1f
   subpackages:
   - color
   - log
@@ -36,11 +36,11 @@ imports:
   subpackages:
   - assert
 - name: github.com/valyala/fasthttp
-  version: 3c5ba2c98d622df52926a4d17be18a6728ccaf1c
+  version: 8f05edbec9fb5b0c7a4012ee746035a82e3e8bfb
 - name: github.com/valyala/fasttemplate
   version: 3b874956e03f1636d171bda64b130f9135f42cff
 - name: golang.org/x/net
-  version: c4c3ea71919de159c9e246d7be66deb7f0a39a58
+  version: 313cf39d4ac368181bce6960ac9be9e7cee67e68
   subpackages:
   - context
   - websocket

log/logger.go

@@ -1,23 +1,33 @@
 package log
 
-import "io"
+import (
+	"io"
+
+	"github.com/labstack/gommon/log"
+)
 
 type (
 	// Logger defines the logging interface.
 	Logger interface {
 		SetOutput(io.Writer)
-		SetLevel(uint8)
+		SetLevel(log.Lvl)
 		Print(...interface{})
 		Printf(string, ...interface{})
+		Printj(log.JSON)
 		Debug(...interface{})
 		Debugf(string, ...interface{})
+		Debugj(log.JSON)
 		Info(...interface{})
 		Infof(string, ...interface{})
+		Infoj(log.JSON)
 		Warn(...interface{})
 		Warnf(string, ...interface{})
+		Warnj(log.JSON)
 		Error(...interface{})
 		Errorf(string, ...interface{})
+		Errorj(log.JSON)
 		Fatal(...interface{})
+		Fatalj(log.JSON)
 		Fatalf(string, ...interface{})
 	}
 )

middleware/logger.go

@@ -2,7 +2,6 @@ package middleware
 
 import (
 	"bytes"
-	"fmt"
 	"io"
 	"net"
 	"os"
@@ -158,9 +157,8 @@ func LoggerWithConfig(config LoggerConfig) echo.MiddlewareFunc {
 					return w.Write([]byte(b))
 				case "tx_bytes":
 					return w.Write([]byte(strconv.FormatInt(res.Size(), 10)))
-				default:
-					return w.Write([]byte(fmt.Sprintf("[unknown tag %s]", tag)))
 				}
+				return 0, nil
 			})
 			if err == nil {
 				config.Output.Write(buf.Bytes())