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// Copyright 2015 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package testutil
import (
"net/http"
"sync"
)
type PauseableHandler struct {
Next http.Handler
mu sync.Mutex
paused bool
}
func (ph *PauseableHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
ph.mu.Lock()
paused := ph.paused
ph.mu.Unlock()
if !paused {
ph.Next.ServeHTTP(w, r)
} else {
hj, ok := w.(http.Hijacker)
if !ok {
panic("webserver doesn't support hijacking")
}
conn, _, err := hj.Hijack()
if err != nil {
panic(err.Error())
}
conn.Close()
}
}
func (ph *PauseableHandler) Pause() {
ph.mu.Lock()
defer ph.mu.Unlock()
ph.paused = true
}
func (ph *PauseableHandler) Resume() {
ph.mu.Lock()
defer ph.mu.Unlock()
ph.paused = false
}
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