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版本：2.4.x

NewOption 自定义的错误创建​

  • 说明：用于自定义配置的错误对象创建。
  • 格式：
NewOption(option Option) error
  • 示例：
func ExampleNewOption() {
       err := gerror.NewOption(gerror.Option{
          Text: "this feature is disabled in this storage",
          Code: gcode.CodeNotSupported,
      })
}

fmt 格式化​

通过以上示例我们可以看到，通过 %+v 的打印格式可以打印出完整的堆栈信息，当然 gerror.Error 对象支持多种fmt格式：

格式符输出内容
%v, %s打印所有的层级错误信息，构成完成的字符串返回，多个层级使用 : 拼接。
%-v, %-s打印当前层级的错误信息，返回字符串。
%+s打印完整的堆栈信息列表。
%+v打印所有的层级错误信息字符串，以及完整的堆栈信息，等同于 %s\n%+s。

使用示例：

package main

import (
    "errors"
    "fmt"
    "github.com/gogf/gf/v2/errors/gerror"
)

func main() {
    var err error
    err = errors.New("sql error")
    err = gerror.Wrap(err, "adding failed")
    err = gerror.Wrap(err, "api calling failed")
    fmt.Printf(" %%s: %s\n", err)
    fmt.Printf("%%-s: %-s\n", err)
    fmt.Println("%+s: ")
    fmt.Printf("%+s\n", err)
}

// Output:
//  %s: api calling failed: adding failed: sql error
// %-s: api calling failed
// %+s:
// 1. api calling failed
//     1).  main.main
//         /Users/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/.example/other/test.go:14
// 2. adding failed
//     1).  main.main
//         /Users/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/.example/other/test.go:13
// 3. sql error

日志输出支持​

glog 日志管理模块天然支持对 gerror 错误堆栈打印支持，这种支持不是强耦合性的，而是通过 fmt 格式化打印接口支持的。

使用示例：

package main

import (
    "errors"
    "github.com/gogf/gf/v2/frame/g"
    "github.com/gogf/gf/v2/errors/gerror"
)

func main() {
    var err error
    err = errors.New("sql error")
    err = gerror.Wrap(err, "adding failed")
    err = gerror.Wrap(err, "api calling failed")
    g.Log().Printf("%+v", err)
}

// Output:
// 2020-10-17 15:22:26.793 api calling failed: adding failed: sql error
// 1. api calling failed
//     1).  main.main
//         /Users/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/.example/other/test.go:14
// 2. adding failed
//     1).  main.main
//         /Users/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/.example/other/test.go:13
// 3. sql error

简化堆栈输出​

gerror 组件默认创建的错误对象是带完整堆栈信息的，有利于问题的快速定位。不过默认情况下，打印的堆栈信息包含了完整的框架堆栈，例如：

2022-10-08 21:07:00.751 [ERRO] {328d1204e2191c179a09086890c857b8} request done, cost: 3 ms, code: -1, message: "", detail: <nil>, error: GetParams failed: {ResourceId:tdxxxx-a2c378bd Component: Version:0}: rpc error: code = NotFound desc = cluster.khaos.tencent.com "tdxxxx-a2c378bd" not found
1. GetParams failed: {ResourceId:tdxxxx-a2c378bd Component: Version:0}
   1).  github.com/khaos/eros/app/khaos-oss/internal/logic/params.(*sParams).doGetParamsJson
        /root/workspace/khaos/eros/app/khaos-oss/internal/logic/params/params.go:66
   2).  github.com/khaos/eros/app/khaos-oss/internal/logic/params.(*sParams).GetParams
        /root/workspace/khaos/eros/app/khaos-oss/internal/logic/params/params.go:36
   3).  github.com/khaos/eros/app/khaos-oss/internal/controller.(*cParams).GetOne
        /root/workspace/khaos/eros/app/khaos-oss/internal/controller/params.go:21
   4).  github.com/gogf/gf/v2/net/ghttp.(*middleware).callHandlerFunc.func1
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:152
   5).  github.com/gogf/gf/v2/net/ghttp.niceCallFunc
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_func.go:55
   6).  github.com/gogf/gf/v2/net/ghttp.(*middleware).callHandlerFunc
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:129
   7).  github.com/gogf/gf/v2/net/ghttp.(*middleware).Next.func1
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:75
   8).  github.com/gogf/gf/v2/util/gutil.TryCatch
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/util/gutil/gutil.go:56
   9).  github.com/gogf/gf/v2/net/ghttp.(*middleware).Next
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:49
   10). github.com/khaos/eros/app/khaos-oss/internal/logic/middleware.(*sMiddleware).CheckLimit
        /root/workspace/khaos/eros/app/khaos-oss/internal/logic/middleware/middleware.go:27
   11). github.com/gogf/gf/v2/net/ghttp.(*middleware).Next.func1.5
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:96
   12). github.com/gogf/gf/v2/net/ghttp.niceCallFunc
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_func.go:55
   13). github.com/gogf/gf/v2/net/ghttp.(*middleware).Next.func1
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:95
   14). github.com/gogf/gf/v2/util/gutil.TryCatch
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/util/gutil/gutil.go:56
   15). github.com/gogf/gf/v2/net/ghttp.(*middleware).Next
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:49
   16). github.com/khaos/eros/utility/server.MiddlewareCommonResponse
        /root/workspace/khaos/eros/utility/server/server_common.go:14
   17). github.com/gogf/gf/v2/net/ghttp.(*middleware).Next.func1.5
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:96
   18). github.com/gogf/gf/v2/net/ghttp.niceCallFunc
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_func.go:55
   19). github.com/gogf/gf/v2/net/ghttp.(*middleware).Next.func1
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:95
   20). github.com/gogf/gf/v2/util/gutil.TryCatch
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/util/gutil/gutil.go:56
   21). github.com/gogf/gf/v2/net/ghttp.(*middleware).Next
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:49
   22). github.com/khaos/eros/utility/server.MiddlewareLogging
        /root/workspace/khaos/eros/utility/server/server.go:46
   23). github.com/gogf/gf/v2/net/ghttp.(*middleware).Next.func1.5
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:96
   24). github.com/gogf/gf/v2/net/ghttp.niceCallFunc
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_func.go:55
   25). github.com/gogf/gf/v2/net/ghttp.(*middleware).Next.func1
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:95
   26). github.com/gogf/gf/v2/util/gutil.TryCatch
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/util/gutil/gutil.go:56
   27). github.com/gogf/gf/v2/net/ghttp.(*middleware).Next
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:49
   28). github.com/gogf/gf/v2/net/ghttp.MiddlewareCORS
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_middleware_cors.go:12
   29). github.com/gogf/gf/v2/net/ghttp.(*middleware).Next.func1.5
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_request_middleware.go:96
   30). github.com/gogf/gf/v2/net/ghttp.niceCallFunc
        /root/go/pkg/mod/github.com/gogf/gf/v2@v2.1.4/net/ghttp/ghttp_func.go:55
2. rpc error: code = NotFound desc = cluster.khaos.tencent.com "tdxxxx-a2c378bd" not found

从框架 v2.2.0 版本开始，我们可以通过环境变量配置 GF_GERROR_BRIEF=true 或者命令行启动参数 --gf.gerror.brief=true 来启用错误堆栈的简略模式，在简略模式下，堆栈信息中将不会打印框架的堆栈信息。以上堆栈信息将会变为：

2022-10-08 21:07:00.751 [ERRO] {328d1204e2191c179a09086890c857b8} request done, cost: 3 ms, code: -1, message: "", detail: <nil>, error: GetParams failed: {ResourceId:tdxxxx-a2c378bd Component: Version:0}: rpc error: code = NotFound desc = cluster.khaos.tencent.com "tdxxxx-a2c378bd" not found
1. GetParams failed: {ResourceId:tdxxxx-a2c378bd Component: Version:0}
   1).  github.com/khaos/eros/app/khaos-oss/internal/logic/params.(*sParams).doGetParamsJson
        /root/workspace/khaos/eros/app/khaos-oss/internal/logic/params/params.go:66
   2).  github.com/khaos/eros/app/khaos-oss/internal/logic/params.(*sParams).GetParams
        /root/workspace/khaos/eros/app/khaos-oss/internal/logic/params/params.go:36
   3).  github.com/khaos/eros/app/khaos-oss/internal/controller.(*cParams).GetOne
        /root/workspace/khaos/eros/app/khaos-oss/internal/controller/params.go:21
2. rpc error: code = NotFound desc = cluster.khaos.tencent.com "tdxxxx-a2c378bd" not found