package server import ( "context" "fmt" "net/http" "runtime" "github.com/containers/libpod/pkg/api/handlers/utils" log "github.com/sirupsen/logrus" ) // APIHandler is a wrapper to enhance HandlerFunc's and remove redundant code func (s *APIServer) APIHandler(h http.HandlerFunc) http.HandlerFunc { return func(w http.ResponseWriter, r *http.Request) { // http.Server hides panics, we want to see them and fix the cause. defer func() { err := recover() if err != nil { buf := make([]byte, 1<<20) n := runtime.Stack(buf, true) log.Warnf("Recovering from API handler panic: %v, %s", err, buf[:n]) // Try to inform client things went south... won't work if handler already started writing response body utils.InternalServerError(w, fmt.Errorf("%v", err)) } }() // Wrapper to hide some boiler plate fn := func(w http.ResponseWriter, r *http.Request) { log.Debugf("APIHandler -- Method: %s URL: %s", r.Method, r.URL.String()) if err := r.ParseForm(); err != nil { log.Infof("Failed Request: unable to parse form: %q", err) } // TODO: Use r.ConnContext when ported to go 1.13 c := context.WithValue(r.Context(), "decoder", s.Decoder) c = context.WithValue(c, "runtime", s.Runtime) c = context.WithValue(c, "shutdownFunc", s.Shutdown) r = r.WithContext(c) h(w, r) } fn(w, r) } } // VersionedPath prepends the version parsing code // any handler may override this default when registering URL(s) func VersionedPath(p string) string { return "/v{version:[0-9][0-9.]*}" + p }