| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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 internal |
| |
| import "sync" |
| |
| // ClientHandlerMap is a simple concurrent-safe map for the client type |
| type ClientHandlers struct { |
| handlers map[Closable]bool |
| l *sync.RWMutex |
| } |
| |
| func NewClientHandlers() ClientHandlers { |
| return ClientHandlers{ |
| handlers: map[Closable]bool{}, |
| l: &sync.RWMutex{}, |
| } |
| } |
| func (h *ClientHandlers) Add(c Closable) { |
| h.l.Lock() |
| defer h.l.Unlock() |
| h.handlers[c] = true |
| } |
| func (h *ClientHandlers) Val(c Closable) bool { |
| h.l.RLock() |
| defer h.l.RUnlock() |
| return h.handlers[c] |
| } |
| |
| func (h *ClientHandlers) Close() { |
| h.l.Lock() |
| defer h.l.Unlock() |
| |
| for handler := range h.handlers { |
| handler.Close() |
| } |
| } |