mirror of
https://github.com/etcd-io/etcd.git
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78 lines
1.5 KiB
Go
78 lines
1.5 KiB
Go
/*
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Copyright 2013 CoreOS Inc.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package web
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type hub struct {
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// status
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open bool
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// Registered connections.
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connections map[*connection]bool
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// Inbound messages from the connections.
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broadcast chan string
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// Register requests from the connections.
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register chan *connection
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// Unregister requests from connections.
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unregister chan *connection
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}
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var h = hub{
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open: false,
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broadcast: make(chan string),
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register: make(chan *connection),
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unregister: make(chan *connection),
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connections: make(map[*connection]bool),
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}
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func Hub() *hub {
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return &h
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}
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func HubOpen() bool {
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return h.open
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}
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func (h *hub) run() {
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h.open = true
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for {
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select {
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case c := <-h.register:
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h.connections[c] = true
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case c := <-h.unregister:
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delete(h.connections, c)
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close(c.send)
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case m := <-h.broadcast:
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for c := range h.connections {
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select {
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case c.send <- m:
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default:
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delete(h.connections, c)
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close(c.send)
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go c.ws.Close()
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}
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}
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}
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}
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}
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func (h *hub) Send(msg string) {
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h.broadcast <- msg
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}
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