Update to 8.1.0 - a new logger implemented as a solution for https://github.com/kataras/iris/issues/680

Former-commit-id: 765b43602655fad7f525ca7a5f7f297a6167d075

.travis.yml

@@ -7,7 +7,7 @@ go:
   - tip
 go_import_path: github.com/kataras/iris
 install:
-  - go get ./... # for iris-contrib/httpexpect and sirupsen/logrus
+  - go get ./... # for iris-contrib/httpexpect and kataras/golog
 script:
   - go test -v -cover ./...
 after_script:

HISTORY.md

@@ -13,10 +13,46 @@
 ### Should I upgrade my Iris?
 
 Developers are not forced to upgrade if they don't really need it. Upgrade whenever you feel ready.
+
 > Iris uses the [vendor directory](https://docs.google.com/document/d/1Bz5-UB7g2uPBdOx-rw5t9MxJwkfpx90cqG9AFL0JAYo) feature, so you get truly reproducible builds, as this method guards against upstream renames and deletes.
 
 **How to upgrade**: Open your command-line and execute this command: `go get -u github.com/kataras/iris`.
 
+
+# We, 26 July 2017 | v8.1.0
+
+The `app.Logger() *logrus.Logger` was replaced with a custom implementation [[golog](https://github.com/kataras/golog)], it's compatible with the [logrus](https://github.com/sirupsen/logrus) package and other open-source golang loggers as well, because of that: https://github.com/kataras/iris/issues/680#issuecomment-316184570. 
+
+The API didn't change much except these:
+
+-  the new implementation does not recognise `Fatal` and `Panic` because, actually, iris never panics
+- the old `app.Logger().Out = io.Writer` should be written as `app.Logger().SetOutput(io.Writer)`
+
+The new implementation, [golog](https://github.com/kataras/golog) is more featured
+and it completes more use cases than the before external implementation.
+
+At general you have to know that the low-level relative fields and functions are actually inside `app.Logger().Printer` object, i.e: `app.Logger().Printer.Output` to get the `io.Writer` or `app.Logger().Printer.AddOuput/SetOutput` to set or add more output(`io.Writer`) targets.
+
+### Integration
+
+I understand that many of you may use logrus outside of Iris too. To integrate an external `logrus` logger just 
+`Install` it-- all print operations will be handled by the provided `logrus instance`.
+
+```go
+import (
+    "github.com/kataras/iris"
+    "github.com/sirupsen/logrus"
+)
+
+package main(){
+    app := iris.New()
+    app.Logger().Install(logrus.StandardLogger()) // the package-level logrus instance
+    // [...]
+}
+```
+
+For more information about our new logger please navigate to: https://github.com/kataras/golog -  contributions are welcomed as well!
+
 # Sa, 23 July 2017 | v8.0.7
 
 Fix [It's true that with UseGlobal the "/path1.txt" route call the middleware but cause the prepend, the order is inversed](https://github.com/kataras/iris/issues/683#issuecomment-317229068)

README.md

@@ -17,7 +17,7 @@ Iris is a fast, simple and efficient micro web framework for Go. It provides a b
 ### 📑 Table of contents
 
 * [Installation](#-installation)
-* [Latest changes](https://github.com/kataras/iris/blob/master/HISTORY.md#sa-23-july-2017--v807)
+* [Latest changes](https://github.com/kataras/iris/blob/master/HISTORY.md#we-26-july-2017--v810)
 * [Learn](#-learn)
 	* [HTTP Listening](_examples/#http-listening)
 	* [Configuration](_examples/#configuration)
@@ -339,7 +339,7 @@ Thank You for your trust!
 
 ### 📌 Version
 
-Current: **8.0.7**
+Current: **8.1.0**
 
 Each new release is pushed to the master. It stays there until the next version. When a next version is released then the previous version goes to its own branch with `gopkg.in` as its import path (and its own vendor folder), in order to keep it working "for-ever".
 

_examples/http-listening/listen-addr/omit-server-errors/main_test.go

@@ -3,7 +3,6 @@ package main
 import (
 	"bytes"
 	stdContext "context"
-	"fmt"
 	"strings"
 	"testing"
 	"time"
@@ -14,7 +13,7 @@ import (
 func logger(app *iris.Application) *bytes.Buffer {
 	buf := &bytes.Buffer{}
 
-	app.Logger().Out = buf
+	app.Logger().SetOutput(buf)
 
 	// disable the "Now running at...." in order to have a clean log of the error.
 	// we could attach that on `Run` but better to keep things simple here.
@@ -41,20 +40,12 @@ func TestListenAddr(t *testing.T) {
 		t.Fatalf("expecting err to be `iris.ErrServerClosed` but got: %v", err)
 	}
 
-	// println(log.Bytes())
-	// println(len(log.Bytes()))
+	expectedMessage := iris.ErrServerClosed.Error()
 
-	expected := fmt.Sprintln("\"" + iris.ErrServerClosed.Error() + "\" ")
-	expected = strings.TrimSpace(expected)
-	// println([]byte(expected))
-	// println(len([]byte(expected)))
-
-	got := log.String()
-	got = strings.Split(got, "msg=")[1]
-	got = strings.TrimSpace(got)
-	if expected != got {
-		t.Fatalf("expecting to log the:\n'%s'\ninstead of:\n'%s'", expected, got)
+	if got := log.String(); !strings.Contains(got, expectedMessage) {
+		t.Fatalf("expecting to log to contains the:\n'%s'\ninstead of:\n'%s'", expectedMessage, got)
 	}
+
 }
 
 func TestListenAddrWithoutServerErr(t *testing.T) {

_examples/http_request/request-logger/main.go

@@ -18,7 +18,8 @@ func main() {
 		Method: true,
 		// Path displays the request path
 		Path: true,
-		// Columns: true,
+
+		//Columns: true,
 
 		// if !empty then its contents derives from `ctx.Values().Get("logger_message")
 		// will be added to the logs.
@@ -57,6 +58,6 @@ func main() {
 	// http://localhost:8080/2
 	// http://lcoalhost:8080/notfoundhere
 	// see the output on the console.
-	app.Run(iris.Addr(":8080"))
+	app.Run(iris.Addr(":8080"), iris.WithoutServerError(iris.ErrServerClosed))
 
 }

_examples/http_request/request-logger/request-logger-file/main.go

@@ -36,7 +36,7 @@ func main() {
 	// http://localhost:8080/1
 	// http://localhost:8080/2
 	// http://lcoalhost:8080/notfoundhere
-	app.Run(iris.Addr(":8080"))
+	app.Run(iris.Addr(":8080"), iris.WithoutServerError(iris.ErrServerClosed))
 }
 
 // get a filename based on the date, file logs works that way the most times

_examples/miscellaneous/file-logger/main.go

@@ -32,11 +32,11 @@ func main() {
 
 	app := iris.New()
 	// attach the file as logger, remember, iris' app logger is just an io.Writer.
-	app.Logger().Out = newLogFile()
+	app.Logger().SetOutput(newLogFile())
 
 	app.Get("/", func(ctx context.Context) {
 		// for the sake of simplicity, in order see the logs at the ./_today_.txt
-		ctx.Application().Logger().Infoln("Request path: " + ctx.Path())
+		ctx.Application().Logger().Info("Request path: " + ctx.Path())
 		ctx.Writef("hello")
 	})
 
@@ -44,7 +44,7 @@ func main() {
 	// and open the ./logs.txt file
 	if err := app.Run(iris.Addr(":8080"), iris.WithoutBanner); err != nil {
 		if err != iris.ErrServerClosed {
-			app.Logger().Warnln("Shutdown with error: " + err.Error())
+			app.Logger().Warn("Shutdown with error: " + err.Error())
 		}
 	}
 }

_examples/websocket/secure/main.go

@@ -40,7 +40,7 @@ func main() {
 		// using the go v1.8's HTTP/2 Push.
 		// Note that you have to listen using ListenTLS in order this to work.
 		if err := ctx.ResponseWriter().Push("/js/chat.js", nil); err != nil {
-			ctx.Application().Logger().Warnln(err.Error())
+			ctx.Application().Logger().Warn(err.Error())
 		}
 		ctx.ViewData("", clientPage{"Client Page", ctx.Host()})
 		ctx.View("client.html")

context/application.go

@@ -4,7 +4,7 @@ import (
 	"io"
 	"net/http"
 
-	"github.com/sirupsen/logrus"
+	"github.com/kataras/golog"
 )
 
 // Application is the context's owner.
@@ -14,8 +14,8 @@ type Application interface {
 	// ConfigurationReadOnly returns all the available configuration values can be used on a request.
 	ConfigurationReadOnly() ConfigurationReadOnly
 
-	// Logger returns the logrus logger instance(pointer) that is being used inside the "app".
-	Logger() *logrus.Logger
+	// Logger returns the golog logger instance(pointer) that is being used inside the "app".
+	Logger() *golog.Logger
 
 	// View executes and write the result of a template file to the writer.
 	//

context/context.go

@@ -2231,7 +2231,7 @@ func (ctx *context) BeginTransaction(pipe func(t *Transaction)) {
 	t := newTransaction(ctx) // it calls this *context, so the overriding with a new pool's New of context.Context wil not work here.
 	defer func() {
 		if err := recover(); err != nil {
-			ctx.Application().Logger().Warnln(errTransactionInterrupted.Format(err).Error())
+			ctx.Application().Logger().Warn(errTransactionInterrupted.Format(err).Error())
 			// complete (again or not , doesn't matters) the scope without loud
 			t.Complete(nil)
 			// we continue as normal, no need to return here*

doc.go

@@ -35,7 +35,7 @@ Source code and other details for the project are available at GitHub:
 
 Current Version
 
-8.0.7
+8.1.0
 
 Installation
 

iris.go

@@ -10,7 +10,7 @@ import (
 	"sync"
 	"time"
 
-	"github.com/sirupsen/logrus"
+	"github.com/kataras/golog"
 
 	// context for the handlers
 	"github.com/kataras/iris/context"
@@ -33,7 +33,7 @@ import (
 const (
 
 	// Version is the current version number of the Iris Web Framework.
-	Version = "8.0.7"
+	Version = "8.1.0"
 )
 
 // HTTP status codes as registered with IANA.
@@ -137,8 +137,8 @@ type Application struct {
 	// all fields defaults to something that is working, developers don't have to set it.
 	config *Configuration
 
-	// the logrus logger instance, defaults to "Info" level messages (all except "Debug")
-	logger *logrus.Logger
+	// the golog logger instance, defaults to "Info" level messages (all except "Debug")
+	logger *golog.Logger
 
 	// view engine
 	view view.View
@@ -163,7 +163,7 @@ func New() *Application {
 
 	app := &Application{
 		config:     &config,
-		logger:     logrus.New(),
+		logger:     golog.Default,
 		APIBuilder: router.NewAPIBuilder(),
 		Router:     router.NewRouter(),
 	}
@@ -207,20 +207,19 @@ func (app *Application) ConfigurationReadOnly() context.ConfigurationReadOnly {
 // These are the different logging levels. You can set the logging level to log
 // on the application 's instance of logger, obtained with `app.Logger()`.
 //
-// These are conversions from logrus.
+// These are conversions from golog.
 const (
 	// NoLog level, logs nothing.
-	// It's the logrus' `PanicLevel` but it never used inside iris so it will never log.
-	NoLog = logrus.PanicLevel
+	NoLog = golog.DisableLevel
 	// ErrorLevel level. Logs. Used for errors that should definitely be noted.
 	// Commonly used for hooks to send errors to an error tracking service.
-	ErrorLevel = logrus.ErrorLevel
+	ErrorLevel = golog.ErrorLevel
 	// WarnLevel level. Non-critical entries that deserve eyes.
-	WarnLevel = logrus.WarnLevel
+	WarnLevel = golog.WarnLevel
 )
 
-// Logger returns the logrus logger instance(pointer) that is being used inside the "app".
-func (app *Application) Logger() *logrus.Logger {
+// Logger returns the golog logger instance(pointer) that is being used inside the "app".
+func (app *Application) Logger() *golog.Logger {
 	return app.logger
 }
 
@@ -264,13 +263,13 @@ func (app *Application) RegisterView(viewEngine view.Engine) {
 func (app *Application) View(writer io.Writer, filename string, layout string, bindingData interface{}) error {
 	if app.view.Len() == 0 {
 		err := errors.New("view engine is missing, use `RegisterView`")
-		app.Logger().Errorln(err)
+		app.Logger().Error(err)
 		return err
 	}
 
 	err := app.view.ExecuteWriter(writer, filename, layout, bindingData)
 	if err != nil {
-		app.Logger().Errorln(err)
+		app.Logger().Error(err)
 	}
 	return err
 }
@@ -328,7 +327,7 @@ func (app *Application) NewHost(srv *http.Server) *host.Supervisor {
 
 	// check if different ErrorLog provided, if not bind it with the framework's logger
 	if srv.ErrorLog == nil {
-		srv.ErrorLog = log.New(app.logger.Out, "[HTTP Server] ", 0)
+		srv.ErrorLog = log.New(app.logger.Printer.Output, "[HTTP Server] ", 0)
 	}
 
 	if srv.Addr == "" {
@@ -352,7 +351,7 @@ func (app *Application) NewHost(srv *http.Server) *host.Supervisor {
 
 	if !app.config.DisableStartupLog {
 		// show the available info to exit from app.
-		su.RegisterOnServe(host.WriteStartupLogOnServe(app.logger.Out)) // app.logger.Writer -> Info
+		su.RegisterOnServe(host.WriteStartupLogOnServe(app.logger.Printer.Output)) // app.logger.Writer -> Info
 	}
 
 	if !app.config.DisableInterruptHandler {
@@ -543,7 +542,7 @@ func (app *Application) Run(serve Runner, withOrWithout ...Configurator) error {
 	// this will block until an error(unless supervisor's DeferFlow called from a Task).
 	err := serve(app)
 	if err != nil {
-		app.Logger().Errorln(err)
+		app.Logger().Error(err)
 	}
 	return err
 }

middleware/logger/logger.go

@@ -79,14 +79,15 @@ func (l *requestLoggerMiddleware) ServeHTTP(ctx context.Context) {
 		logFunc(endTime, latency, status, ip, method, path, message)
 		return
 	}
-	endTimeFormatted := endTime.Format("2006/01/02 - 15:04:05")
+
 	if l.config.Columns {
+		endTimeFormatted := endTime.Format("2006/01/02 - 15:04:05")
 		output := Columnize(endTimeFormatted, latency, status, ip, method, path, message)
-		ctx.Application().Logger().Out.Write([]byte(output))
+		ctx.Application().Logger().Printer.Output.Write([]byte(output))
 		return
 	}
 	// no new line, the framework's logger is responsible how to render each log.
-	line := fmt.Sprintf("%s | %v %4v %s %s %s", endTimeFormatted, status, latency, ip, method, path)
+	line := fmt.Sprintf("%v %4v %s %s %s", status, latency, ip, method, path)
 	if message != nil {
 		line += fmt.Sprintf(" %v", message)
 	}

middleware/recover/recover.go

@@ -46,7 +46,7 @@ func New() context.Handler {
 				logMessage += fmt.Sprintf("At Request: %s\n", getRequestLogs(ctx))
 				logMessage += fmt.Sprintf("Trace: %s\n", err)
 				logMessage += fmt.Sprintf("\n%s", stacktrace)
-				ctx.Application().Logger().Warnln(logMessage)
+				ctx.Application().Logger().Warn(logMessage)
 
 				ctx.StatusCode(500)
 				ctx.StopExecution()