mirror of https://github.com/go-gitea/gitea.git
45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
// Copyright 2017 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !go1.8
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package promhttp
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import (
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"io"
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"net/http"
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)
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func newDelegator(w http.ResponseWriter, observeWriteHeaderFunc func(int)) delegator {
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d := &responseWriterDelegator{
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ResponseWriter: w,
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observeWriteHeader: observeWriteHeaderFunc,
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}
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id := 0
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if _, ok := w.(http.CloseNotifier); ok {
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id += closeNotifier
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}
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if _, ok := w.(http.Flusher); ok {
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id += flusher
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}
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if _, ok := w.(http.Hijacker); ok {
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id += hijacker
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}
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if _, ok := w.(io.ReaderFrom); ok {
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id += readerFrom
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}
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return pickDelegator[id](d)
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}
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