mirror of
https://github.com/gravitational/teleport.git
synced 2026-09-21 14:35:22 +08:00
rosstimothy
b7318b5c7e
Adds the new linter and configures it to prevent direct error comparisions and type assertions in favor of errors.Is and errors.As. All current violations caught by the linter have been updated accordingly.
67 lines
2.0 KiB
Go
67 lines
2.0 KiB
Go
/*
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* Teleport
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* Copyright (C) 2023 Gravitational, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package reverseproxy
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import (
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"errors"
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"io"
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"net"
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"net/http"
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)
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// ErrorHandler is an interface for handling errors.
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type ErrorHandler interface {
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ServeHTTP(w http.ResponseWriter, req *http.Request, err error)
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}
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// DefaultHandler is the default error handler.
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var DefaultHandler ErrorHandler = &defaultHandler{}
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// defaultHandler is the default error handler.
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type defaultHandler struct{}
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// ServeHTTP writes the error message to the response.
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func (e *defaultHandler) ServeHTTP(w http.ResponseWriter, req *http.Request, err error) {
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statusCode := http.StatusInternalServerError
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switch {
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case errors.Is(err, io.EOF):
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statusCode = http.StatusBadGateway
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default:
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var e net.Error
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switch ok := errors.As(err, &e); {
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case ok && e.Timeout():
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statusCode = http.StatusGatewayTimeout
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case ok:
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statusCode = http.StatusBadGateway
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}
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}
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w.WriteHeader(statusCode)
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w.Write([]byte(http.StatusText(statusCode)))
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}
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// ErrorHandlerFunc is an adapter to allow the use of ordinary functions as
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// error handlers. If f is a function with the appropriate signature,
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// ErrorHandlerFunc(f) is a ErrorHandler that calls f.
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type ErrorHandlerFunc func(http.ResponseWriter, *http.Request, error)
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// ServeHTTP calls f(w, r).
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func (f ErrorHandlerFunc) ServeHTTP(w http.ResponseWriter, r *http.Request, err error) {
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f(w, r, err)
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}
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