gotosocial/internal/router/timeout.go
tobi 8d0c017cf2
[feature/performance] Wrap incoming HTTP requests in timeout handler (#2353)
* deinterface router, start messing about with deadlines

* weeeee

* thanks linter (thinter)

* write Connection: close when timing out requests

* update wording

* don't replace req

* don't bother with fancy Cause functions (I'll use them one day...)
2023-11-13 19:48:51 +01:00

61 lines
1.7 KiB
Go

// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package router
import (
"context"
"net/http"
"time"
"github.com/gin-gonic/gin"
)
const requestTimeout = 10 * time.Minute
type timeoutHandler struct {
*gin.Engine
}
// ServeHTTP wraps the embedded Gin engine's ServeHTTP
// function with an injected context which times out
// non-upgraded inbound requests after 10 minutes.
func (th timeoutHandler) ServeHTTP(
w http.ResponseWriter,
r *http.Request,
) {
if upgr := r.Header.Get("Upgrade"); upgr != "" {
// Upgrade to wss (probably).
// Leave well enough alone.
th.Engine.ServeHTTP(w, r)
return
}
// Create timeout ctx.
toCtx, cancelCtx := context.WithTimeout(
r.Context(),
requestTimeout,
)
defer cancelCtx()
// Serve the request using a shallow copy
// with the new context, without replacing
// the underlying request, since the latter
// may be used later outside of the Gin
// engine for post-request cleanup tasks.
th.Engine.ServeHTTP(w, r.WithContext(toCtx))
}