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package serializer
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import (
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"errors"
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"github.com/gin-gonic/gin"
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)
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// AppError 应用错误，实现了error接口
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type AppError struct {
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Code int
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Msg string
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RawError error
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}
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// NewError 返回新的错误对象
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func NewError(code int, msg string, err error) AppError {
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return AppError{
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Code: code,
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Msg: msg,
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RawError: err,
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}
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}
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// NewErrorFromResponse 从 serializer.Response 构建错误
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func NewErrorFromResponse(resp *Response) AppError {
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return AppError{
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Code: resp.Code,
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Msg: resp.Msg,
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RawError: errors.New(resp.Error),
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}
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}
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// WithError 将应用error携带标准库中的error
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func (err *AppError) WithError(raw error) AppError {
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err.RawError = raw
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return *err
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}
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// Error 返回业务代码确定的可读错误信息
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func (err AppError) Error() string {
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return err.Msg
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}
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// 三位数错误编码为复用http原本含义
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// 五位数错误编码为应用自定义错误
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// 五开头的五位数错误编码为服务器端错误，比如数据库操作失败
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// 四开头的五位数错误编码为客户端错误，有时候是客户端代码写错了，有时候是用户操作错误
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const (
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// CodeNotFullySuccess 未完全成功
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CodeNotFullySuccess = 203
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// CodeCheckLogin 未登录
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CodeCheckLogin = 401
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// CodeNoPermissionErr 未授权访问
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CodeNoPermissionErr = 403
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// CodeNotFound 资源未找到
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CodeNotFound = 404
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// CodeUploadFailed 上传出错
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CodeUploadFailed = 40002
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// CodeCredentialInvalid 凭证无效
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CodeCredentialInvalid = 40001
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// CodeCreateFolderFailed 目录创建失败
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CodeCreateFolderFailed = 40003
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// CodeObjectExist 对象已存在
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CodeObjectExist = 40004
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// CodeSignExpired 签名过期
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CodeSignExpired = 40005
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// CodePolicyNotAllowed 当前存储策略不允许
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CodePolicyNotAllowed = 40006
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// CodeGroupNotAllowed 用户组无法进行此操作
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CodeGroupNotAllowed = 40007
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// CodeAdminRequired 非管理用户组
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CodeAdminRequired = 40008
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// CodeMasterNotFound 主机节点未注册
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CodeMasterNotFound = 40009
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// CodeDBError 数据库操作失败
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CodeDBError = 50001
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// CodeEncryptError 加密失败
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CodeEncryptError = 50002
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// CodeIOFailed IO操作失败
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CodeIOFailed = 50004
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// CodeInternalSetting 内部设置参数错误
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CodeInternalSetting = 50005
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// CodeCacheOperation 缓存操作失败
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CodeCacheOperation = 50006
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// CodeCallbackError 回调失败
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CodeCallbackError = 50007
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//CodeParamErr 各种奇奇怪怪的参数错误
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CodeParamErr = 40001
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// CodeNotSet 未定错误，后续尝试从error中获取
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CodeNotSet = -1
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)
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// DBErr 数据库操作失败
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func DBErr(msg string, err error) Response {
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if msg == "" {
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msg = "数据库操作失败"
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}
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return Err(CodeDBError, msg, err)
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}
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// ParamErr 各种参数错误
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func ParamErr(msg string, err error) Response {
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if msg == "" {
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msg = "参数错误"
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}
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return Err(CodeParamErr, msg, err)
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}
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// Err 通用错误处理
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func Err(errCode int, msg string, err error) Response {
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// 底层错误是AppError，则尝试从AppError中获取详细信息
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if appError, ok := err.(AppError); ok {
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errCode = appError.Code
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err = appError.RawError
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msg = appError.Msg
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}
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res := Response{
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Code: errCode,
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Msg: msg,
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}
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// 生产环境隐藏底层报错
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if err != nil && gin.Mode() != gin.ReleaseMode {
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res.Error = err.Error()
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}
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return res
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}
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