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recover.go
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/
recover.go
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package middleware
import (
"fmt"
"encoding/json"
"runtime"
"time"
"github.com/labstack/echo"
echoMiddleware "github.com/labstack/echo/middleware"
)
type (
Param struct {
Time string `json:"time"`
Url string `json:"url"`
Err string `json:"error"`
Query interface{} `json:"query"`
Stack string `json:"stack"`
}
)
var returnMsg = `{"message":"Internal Server Error"}`
// Recover returns a middleware which recovers from panics anywhere in the chain
// and handles the control to the centralized HTTPErrorHandler.
func Recover(msg ...string) echo.MiddlewareFunc {
if len(msg) > 0 {
returnMsg = msg[0]
}
return RecoverWithConfig(echoMiddleware.DefaultRecoverConfig)
}
func SetReturnMsg(msg string) {
returnMsg = msg
}
// RecoverWithConfig returns a Recover middleware with config.
// See: `Recover()`.
func RecoverWithConfig(config echoMiddleware.RecoverConfig) echo.MiddlewareFunc {
// Defaults
if config.Skipper == nil {
config.Skipper = echoMiddleware.DefaultRecoverConfig.Skipper
}
if config.StackSize == 0 {
config.StackSize = echoMiddleware.DefaultRecoverConfig.StackSize
}
return func(next echo.HandlerFunc) echo.HandlerFunc {
return func(c echo.Context) error {
if config.Skipper(c) {
return next(c)
}
defer func() {
if r := recover(); r != nil {
err, ok := r.(error)
if !ok {
err = fmt.Errorf("%v", r)
}
stack := make([]byte, config.StackSize)
stackStr := ""
length := runtime.Stack(stack, false)
if !config.DisablePrintStack {
stackStr = string(stack[:length])
}
c.Response().Header().Set("Content-Type", "application/json;charset=UTF-8")
c.Response().Write([]byte(returnMsg))
param := &Param{
Time: time.Now().Format("2006-01-02 15:04:05"),
Url: c.Request().URL.Path,
Err: err.Error(),
Query: c.QueryParams(),
Stack: stackStr,
}
data, _ := json.Marshal(param)
fmt.Println(string(data))
}
}()
return next(c)
}
}
}