错误日志信息支持 Stack 特性，该特性可以自动打印出当前调用日志组件方法的堆栈信息，该堆栈信息可以通过 Notice*/Warning*/Error*/Critical*/Panic*/Fatal* 等错误日志输出方法触发，也可以通过 GetStack/PrintStack 获取/打印。错误信息的 stack 信息对于调试来说相当有用。

示例1，通过 Error 方法触发

  1. package main
  3. import (
  4.     "context"
  6.     "github.com/gogf/gf/v2/os/glog"
  7. )
  9. func Test(ctx context.Context) {
  10.     glog.Error(ctx, "This is error!")
  11. }
  13. func main() {
  14.     ctx := context.TODO()
  15.     Test(ctx)
  16. }

打印出的结果如下：

  1. 2022-01-05 15:08:54.998 [ERRO] This is error!
  2. Stack:
  3. 1.  main.Test
  4.     C:/hailaz/test/main.go:10
  5. 2.  main.main
  6.     C:/hailaz/test/main.go:15

示例2，通过 Stack 方法打印

  1. package main
  3. import (
  4.     "context"
  5.     "fmt"
  7.     "github.com/gogf/gf/v2/os/glog"
  8. )
  10. func main() {
  11.     ctx := context.TODO()
  12.     glog.PrintStack(ctx)
  13.     glog.New().PrintStack(ctx)
  15.     fmt.Println(glog.GetStack())
  16.     fmt.Println(glog.New().GetStack())
  17. }

执行后，输出结果为：

  1. 2019-07-12 22:20:28.070 Stack:
  2. 1. main.main
  3.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/v2/geg/os/glog/glog_stack.go:11
  5. 2019-07-12 22:20:28.070 Stack:
  6. 1. main.main
  7.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/v2/geg/os/glog/glog_stack.go:12
  9. 1. main.main
  10.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/v2/geg/os/glog/glog_stack.go:14
  12. 1. main.main
  13.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/v2/geg/os/glog/glog_stack.go:15

示例3，打印 gerror.Error

glog 日志模块支持对标准错误以及 gerror 错误的堆栈打印支持。

  1. package main
  3. import (
  4.     "context"
  5.     "errors"
  7.     "github.com/gogf/gf/v2/errors/gerror"
  8.     "github.com/gogf/gf/v2/os/glog"
  9. )
  11. func MakeError() error {
  12.     return errors.New("connection closed with normal error")
  13. }
  15. func MakeGError() error {
  16.     return gerror.New("connection closed with gerror")
  17. }
  19. func TestGError(ctx context.Context) {
  20.     err1 := MakeError()
  21.     err2 := MakeGError()
  22.     glog.Error(ctx, err1)
  23.     glog.Errorf(ctx, "%+v", err2)
  24. }
  26. func main() {
  27.     ctx := context.TODO()
  28.     TestGError(ctx)
  29. }

执行后，终端输出：

  1. 2019-07-12 22:23:11.467 [ERRO] connection closed with normal error
  2. Stack:
  3. 1. main.TestGError
  4.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/v2/geg/os/glog/glog_gerror.go:20
  5. 2. main.main
  6.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/v2/geg/os/glog/glog_gerror.go:25
  8. 2019-07-12 22:23:11.467 [ERRO] connection closed with gerror
  9. 1. connection closed with gerror
  10.     1). main.MakeGError
  11.         /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/v2/geg/os/glog/glog_gerror.go:14
  12.     2). main.TestGError
  13.         /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/v2/geg/os/glog/glog_gerror.go:19
  14.     3). main.main
  15.         /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/v2/geg/os/glog/glog_gerror.go:25
  16. Stack:
  17. 1. main.TestGError
  18.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/v2/geg/os/glog/glog_gerror.go:21
  19. 2. main.main
  20.    /home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/v2/geg/os/glog/glog_gerror.go:25