docs:optimize logger caller (#85)

Author: ViolaPioggia

Diff for: async_call/client/main.go

@@ -17,12 +17,13 @@ package main
 
 import (
 	"context"
-	"github.com/cloudwego/kitex-examples/kitex_gen/api"
-	"github.com/cloudwego/kitex-examples/kitex_gen/api/echo"
-	"github.com/cloudwego/kitex/client"
 	"log"
 	"strings"
 	"time"
+
+	"github.com/cloudwego/kitex-examples/kitex_gen/api"
+	"github.com/cloudwego/kitex-examples/kitex_gen/api/echo"
+	"github.com/cloudwego/kitex/client"
 )
 
 func NewFuture(f func() (interface{}, error)) func() (interface{}, error) {
@@ -41,9 +42,8 @@ func NewFuture(f func() (interface{}, error)) func() (interface{}, error) {
 }
 
 func sequentialCall(client echo.Client) {
-
 	for i := 1; i < 5; i++ {
-		var req = &api.Request{Message: "my request"}
+		req := &api.Request{Message: "my request"}
 		resp, err := client.Echo(context.Background(), req)
 		if err != nil {
 			log.Fatal(err)
@@ -55,7 +55,7 @@ func sequentialCall(client echo.Client) {
 func asyncParallelCall(client echo.Client) {
 	var futures []func() (interface{}, error)
 	for i := 0; i < 5; i++ {
-		var req = &api.Request{Message: "my request"}
+		req := &api.Request{Message: "my request"}
 
 		futures = append(futures, NewFuture(func() (interface{}, error) {
 			return client.Echo(context.Background(), req)
@@ -88,5 +88,4 @@ func main() {
 	t1 := time.Now()
 	asyncParallelCall(client)
 	log.Println("cast time: " + time.Since(t1).String())
-
 }

Diff for: async_call/server/main.go

@@ -17,11 +17,12 @@ package main
 
 import (
 	"context"
+	"log"
+	"time"
+
 	"github.com/cloudwego/kitex-examples/kitex_gen/api"
 	"github.com/cloudwego/kitex-examples/kitex_gen/api/echo"
 	"github.com/cloudwego/kitex/pkg/klog"
-	"log"
-	"time"
 )
 
 var _ api.Echo = &EchoImpl{}
@@ -32,7 +33,7 @@ type EchoImpl struct{}
 // Echo implements the Echo interface.
 func (s *EchoImpl) Echo(ctx context.Context, req *api.Request) (resp *api.Response, err error) {
 	klog.Info("echo called")
-	//computing...
+	// computing...
 	time.Sleep(time.Duration(1) * time.Second)
 	return &api.Response{Message: req.Message}, nil
 }

Diff for: discovery/p2p/resolver.go

@@ -51,6 +51,6 @@ func (p *P2PResolver) Name() string {
 // Diff computes the difference between two results.
 // When `next` is cacheable, the Change should be cacheable, too. And the `Result` field's CacheKey in
 // the return value should be set with the given cacheKey.
-func (p *P2PResolver) Diff(cacheKey string, prev discovery.Result, next discovery.Result) (discovery.Change, bool) {
+func (p *P2PResolver) Diff(cacheKey string, prev, next discovery.Result) (discovery.Change, bool) {
 	return discovery.DefaultDiff(cacheKey, prev, next)
 }

Diff for: go.mod

@@ -28,5 +28,6 @@ require (
 	github.com/sirupsen/logrus v1.9.2
 	github.com/tidwall/gjson v1.14.4 // indirect
 	github.com/uber/jaeger-lib v2.4.1+incompatible // indirect
+	go.uber.org/zap v1.26.0
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0
 )

Diff for: go.sum

@@ -832,7 +832,6 @@ github.com/apache/arrow/go/v11 v11.0.0/go.mod h1:Eg5OsL5H+e299f7u5ssuXsuHQVEGC4x
 github.com/apache/arrow/go/v12 v12.0.0/go.mod h1:d+tV/eHZZ7Dz7RPrFKtPK02tpr+c9/PEd/zm8mDS9Vg=
 github.com/apache/thrift v0.13.0 h1:5hryIiq9gtn+MiLVn0wP37kb/uTeRZgN08WoCsAhIhI=
 github.com/apache/thrift v0.13.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
-github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
 github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
@@ -1372,13 +1371,16 @@ go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 go.uber.org/atomic v1.11.0 h1:ZvwS0R+56ePWxUNi+Atn9dWONBPp/AUETXlHW0DxSjE=
 go.uber.org/atomic v1.11.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
 go.uber.org/goleak v1.1.11/go.mod h1:cwTWslyiVhfpKIDGSZEM2HlOvcqm+tG4zioyIeLoqMQ=
+go.uber.org/goleak v1.2.0/go.mod h1:XJYK+MuIchqpmGmUSAzotztawfKvYLUIgg7guXrwVUo=
 go.uber.org/goleak v1.2.1 h1:NBol2c7O1ZokfZ0LEU9K6Whx/KnwvepVetCUhtKja4A=
 go.uber.org/goleak v1.2.1/go.mod h1:qlT2yGI9QafXHhZZLxlSuNsMw3FFLxBr+tBRlmO1xH4=
 go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9iU=
+go.uber.org/multierr v1.10.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
 go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
 go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
-go.uber.org/zap v1.24.0 h1:FiJd5l1UOLj0wCgbSE0rwwXHzEdAZS6hiiSnxJN/D60=
 go.uber.org/zap v1.24.0/go.mod h1:2kMP+WWQ8aoFoedH3T2sq6iJ2yDWpHbP0f6MQbS9Gkg=
+go.uber.org/zap v1.26.0 h1:sI7k6L95XOKS281NhVKOFCUNIvv9e0w4BF8N3u+tCRo=
+go.uber.org/zap v1.26.0/go.mod h1:dtElttAiwGvoJ/vj4IwHBS/gXsEu/pZ50mUIRWuG0so=
 golang.org/x/arch v0.0.0-20201008161808-52c3e6f60cff/go.mod h1:flIaEI6LNU6xOCD5PaJvn9wGP0agmIOqjrtsKGRguv4=
 golang.org/x/arch v0.0.0-20210923205945-b76863e36670/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
 golang.org/x/arch v0.0.0-20220722155209-00200b7164a7/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=

Diff for: klog/custom/main.go

@@ -16,6 +16,7 @@ package main
 
 import (
 	"context"
+
 	"github.com/cloudwego/kitex-examples/kitex_gen/api"
 	"github.com/cloudwego/kitex-examples/kitex_gen/api/echo"
 	"github.com/cloudwego/kitex/pkg/klog"

Diff for: klog/logrus/main.go

@@ -15,15 +15,19 @@ package main
 
 import (
 	"context"
+	"fmt"
+	"log"
+	"os"
+	"path"
+	"runtime"
+	"time"
+
 	"github.com/cloudwego/kitex-examples/kitex_gen/api"
 	"github.com/cloudwego/kitex-examples/kitex_gen/api/echo"
 	"github.com/cloudwego/kitex/pkg/klog"
 	kitexlogrus "github.com/kitex-contrib/obs-opentelemetry/logging/logrus"
+	"github.com/sirupsen/logrus"
 	"gopkg.in/natefinch/lumberjack.v2"
-	"log"
-	"os"
-	"path"
-	"time"
 )
 
 var _ api.Echo = &EchoImpl{}
@@ -60,6 +64,9 @@ func main() {
 	}
 
 	logger := kitexlogrus.NewLogger()
+	logger.Logger().SetReportCaller(true)
+	// klog will warp a layer of logrus, so you need to calculate the depth of the caller file separately.
+	logger.Logger().AddHook(NewCustomHook(10))
 	// Provides compression and deletion
 	lumberjackLogger := &lumberjack.Logger{
 		Filename:   fileName,
@@ -83,3 +90,29 @@ func main() {
 		klog.CtxDebugf(context.Background(), "server stopped")
 	}
 }
+
+// CustomHook Custom Hook for processing logs
+type CustomHook struct {
+	CallerDepth int
+}
+
+func NewCustomHook(depth int) *CustomHook {
+	return &CustomHook{
+		CallerDepth: depth,
+	}
+}
+
+func (hook *CustomHook) Levels() []logrus.Level {
+	return logrus.AllLevels
+}
+
+func (hook *CustomHook) Fire(entry *logrus.Entry) error {
+	// Get caller information and specify depth
+	pc, file, line, ok := runtime.Caller(hook.CallerDepth)
+	if ok {
+		funcName := runtime.FuncForPC(pc).Name()
+		entry.Data["caller"] = fmt.Sprintf("%s:%d %s", file, line, funcName)
+	}
+
+	return nil
+}

Diff for: klog/zap/main.go

@@ -16,15 +16,17 @@ package main
 
 import (
 	"context"
+	"log"
+	"os"
+	"path"
+	"time"
+
 	"github.com/cloudwego/kitex-examples/kitex_gen/api"
 	"github.com/cloudwego/kitex-examples/kitex_gen/api/echo"
 	"github.com/cloudwego/kitex/pkg/klog"
 	kitexzap "github.com/kitex-contrib/obs-opentelemetry/logging/zap"
+	"go.uber.org/zap"
 	"gopkg.in/natefinch/lumberjack.v2"
-	"log"
-	"os"
-	"path"
-	"time"
 )
 
 var _ api.Echo = &EchoImpl{}
@@ -59,8 +61,8 @@ func main() {
 			return
 		}
 	}
-
-	logger := kitexzap.NewLogger()
+	// klog will warp a layer of zap, so you need to calculate the depth of the caller file separately.
+	logger := kitexzap.NewLogger(kitexzap.WithZapOptions(zap.AddCallerSkip(3), zap.AddCaller()))
 	// Provides compression and deletion
 	lumberjackLogger := &lumberjack.Logger{
 		Filename:   fileName,

Diff for: profiler/server/main.go

@@ -65,7 +65,7 @@ var sizeClassTagging remote.MessageTagging = func(ctx context.Context, msg remot
 	if data := msg.Data(); data == nil {
 		return ctx, nil
 	}
-	var tags = make([]string, 0, 2)
+	tags := make([]string, 0, 2)
 	var reqType int32
 	if args, ok := msg.Data().(ArgsGetter); ok {
 		if req := args.GetReq(); req != nil {