traefik/pkg/middlewares/recovery/recovery.go
2019-09-13 19:28:04 +02:00

40 lines
987 B
Go

package recovery
import (
"context"
"net/http"
"github.com/containous/traefik/v2/pkg/log"
"github.com/containous/traefik/v2/pkg/middlewares"
)
const (
typeName = "Recovery"
)
type recovery struct {
next http.Handler
name string
}
// New creates recovery middleware.
func New(ctx context.Context, next http.Handler, name string) (http.Handler, error) {
log.FromContext(middlewares.GetLoggerCtx(ctx, name, typeName)).Debug("Creating middleware")
return &recovery{
next: next,
name: name,
}, nil
}
func (re *recovery) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
defer recoverFunc(middlewares.GetLoggerCtx(req.Context(), re.name, typeName), rw)
re.next.ServeHTTP(rw, req)
}
func recoverFunc(ctx context.Context, rw http.ResponseWriter) {
if err := recover(); err != nil {
log.FromContext(ctx).Errorf("Recovered from panic in http handler: %+v", err)
http.Error(rw, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
}
}