55 lines
1.7 KiB
Go
55 lines
1.7 KiB
Go
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package middleware
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import (
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"fmt"
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"net/http"
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"git.dev.m-and-m.ovh/mderasse/gocommon/commonctx"
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)
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type recoveryFuncSignature func(w http.ResponseWriter, r *http.Request)
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type recoveryMiddleware struct {
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handler http.Handler
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respFunc recoveryFuncSignature
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}
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func (rm *recoveryMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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defer func() {
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if err := recover(); err != nil {
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// log the error
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log := commonctx.GetLogger(r.Context())
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if log == nil {
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fmt.Print("Impossible to log the panic as the logger is not part of the context\n")
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} else {
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// Probably have to catch a stacktrace + Info about the error
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log.Error("A Panic happened and has been caught")
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}
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// execute the recovery function
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rm.respFunc(w, r)
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}
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}()
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rm.handler.ServeHTTP(w, r)
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}
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// NewRecoveryMiddleware will declare a new middleware on the provided handler. It will recover any panic and log it.
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// By default, the middleware will return a default error object in json with a 500 Http code. That can be overide by providing a recoveryFunc.
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func NewRecoveryMiddleware(h http.Handler, recoveryFunc recoveryFuncSignature) *recoveryMiddleware {
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recovery := &recoveryMiddleware{
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handler: h,
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respFunc: recoveryFunc,
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}
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if recovery.respFunc == nil {
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recovery.respFunc = func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("X-Content-Type-Options", "nosniff")
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w.Header().Set("Content-Type", "application/json; charset=utf-8")
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w.WriteHeader(http.StatusInternalServerError)
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w.Write([]byte(
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fmt.Sprintf("{\"code\":%d,\"message\":\"An error happened during the execution of your request.\"}", http.StatusInternalServerError),
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))
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}
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}
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return recovery
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}
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