| // 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 |
| } |