Mercurial > gemma

annotate pkg/middleware/notfound.go @ 2549:9bf6b767a56a

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client: refactored and improved splitscreen for diagrams To make different diagrams possible, the splitscreen view needed to be decoupled from the cross profiles. Also the style has changed to make it more consistent with the rest of the app. The standard box header is now used and there are collapse and expand animations.
author Markus Kottlaender <markus@intevation.de>
date Fri, 08 Mar 2019 08:50:47 +0100
parents 04967d6565fa
children 6f9d00c8cc38
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1 // This is Free Software under GNU Affero General Public License v >= 3.0
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2 // without warranty, see README.md and license for details.
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3 //
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4 // SPDX-License-Identifier: AGPL-3.0-or-later
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5 // License-Filename: LICENSES/AGPL-3.0.txt
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6 //
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7 // Copyright (C) 2018 by via donau
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH
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9 // Software engineering by Intevation GmbH
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10 //
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11 // Author(s):
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12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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13
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14 package middleware
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15
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16 import (
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17 "errors"
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18 "net/http"
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19 )
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20
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21 // ErrNotFound should be as the argument to panic if the NotFound should
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22 // report back a http.StatusNotFound.
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23 var ErrNotFound = errors.New("Not found")
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24
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25 // NotFound creates an http.Handler which survives panic(ErrNotFound) and
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26 // reports http.StatusNotFound in these cases back to the calling handler.
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27 func NotFound(next http.Handler) http.Handler {
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28 return http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
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29 defer func() {
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30 if p := recover(); p != nil {
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31 if p == ErrNotFound {
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32 http.NotFound(rw, req)
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33 } else {
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34 panic(p)
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35 }
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36 }
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37 }()
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38 next.ServeHTTP(rw, req)
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39 })
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40 }