Mercurial > gemma
annotate pkg/middleware/notfound.go @ 2068:5a898da60b87
dma added
author | Thomas Junk <thomas.junk@intevation.de> |
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date | Wed, 30 Jan 2019 15:43:08 +0100 |
parents | 04967d6565fa |
children | 6f9d00c8cc38 |
rev | line source |
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Return 404 if a proxied service is not found.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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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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parents:
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20 |
1494
04967d6565fa
Added api doc strings for the middleware package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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21 // ErrNotFound should be as the argument to panic if the NotFound should |
04967d6565fa
Added api doc strings for the middleware package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1127
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22 // report back a http.StatusNotFound. |
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parents:
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23 var ErrNotFound = errors.New("Not found") |
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parents:
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24 |
1494
04967d6565fa
Added api doc strings for the middleware package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1127
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25 // NotFound creates an http.Handler which survives panic(ErrNotFound) and |
04967d6565fa
Added api doc strings for the middleware package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1127
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26 // reports http.StatusNotFound in these cases back to the calling handler. |
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Return 404 if a proxied service is not found.
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parents:
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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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parents:
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34 panic(p) |
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35 } |
71ba4a66ec95
Return 404 if a proxied service is not found.
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parents:
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36 } |
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parents:
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37 }() |
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parents:
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38 next.ServeHTTP(rw, req) |
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parents:
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39 }) |
71ba4a66ec95
Return 404 if a proxied service is not found.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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40 } |