feat(log): add function name and line number in log message

ref: longhorn/longhorn 5509

Signed-off-by: Jack Lin <jack.lin@suse.com>

main.go

@@ -1,7 +1,10 @@
 package main
 
 import (
+	"fmt"
 	"os"
+	"path"
+	"runtime"
 
 	"github.com/sirupsen/logrus"
 	"github.com/urfave/cli"
@@ -25,6 +28,16 @@ func main() {
 	meta.GitCommit = GitCommit
 	meta.BuildDate = BuildDate
 
+	logrus.SetReportCaller(true)
+	logrus.SetFormatter(&logrus.TextFormatter{
+		CallerPrettyfier: func(f *runtime.Frame) (function string, file string) {
+			fileName := fmt.Sprintf("%s:%d", path.Base(f.File), f.Line)
+			funcName := path.Base(f.Function)
+			return funcName, fileName
+		},
+		FullTimestamp: true,
+	})
+
 	a.Before = func(c *cli.Context) error {
 		if c.GlobalBool("debug") {
 			logrus.SetLevel(logrus.DebugLevel)

pkg/util/log.go

@@ -4,8 +4,11 @@ import (
 	"bufio"
 	"bytes"
 	"errors"
+	"fmt"
 	"os"
+	"path"
 	"path/filepath"
+	"runtime"
 
 	"github.com/sirupsen/logrus"
 )
@@ -58,9 +61,16 @@ func SetUpLogger(logsDir string) error {
 		return err
 	}
 	logrus.Infof("Storing process logs at path: %v", logsDir)
+	logrus.SetReportCaller(true)
+
 	logrus.SetFormatter(LonghornFormatter{
 		TextFormatter: &logrus.TextFormatter{
 			DisableColors: false,
+			CallerPrettyfier: func(f *runtime.Frame) (function string, file string) {
+				fileName := fmt.Sprintf("%s:%d", path.Base(f.File), f.Line)
+				funcName := path.Base(f.Function)
+				return funcName, fileName
+			},
 		},
 		LogsDir: logsDir,
 	})