Mercurial > gemma
view pkg/middleware/notfound.go @ 1841:491f5b68da9e
Implemented fairway dimension import.
author | Raimund Renkert <raimund.renkert@intevation.de> |
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date | Thu, 17 Jan 2019 09:22:17 +0100 |
parents | 04967d6565fa |
children | 6f9d00c8cc38 |
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// This is Free Software under GNU Affero General Public License v >= 3.0 // without warranty, see README.md and license for details. // // SPDX-License-Identifier: AGPL-3.0-or-later // License-Filename: LICENSES/AGPL-3.0.txt // // Copyright (C) 2018 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Sascha L. Teichmann <sascha.teichmann@intevation.de> package middleware import ( "errors" "net/http" ) // ErrNotFound should be as the argument to panic if the NotFound should // report back a http.StatusNotFound. var ErrNotFound = errors.New("Not found") // NotFound creates an http.Handler which survives panic(ErrNotFound) and // reports http.StatusNotFound in these cases back to the calling handler. func NotFound(next http.Handler) http.Handler { return http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) { defer func() { if p := recover(); p != nil { if p == ErrNotFound { http.NotFound(rw, req) } else { panic(p) } } }() next.ServeHTTP(rw, req) }) }