// 上报docker事件
func reportEvents() error {
job := Eng.Job("events", "DockerAgent")
// 从当前到3214080000（100年）后,^-^100后我都不在了，还需要考虑超时吗
job.Setenv("since", fmt.Sprint(time.Now().Unix()))
job.Setenv("until", fmt.Sprint(time.Now().Unix()+3214080000))
reader, err := job.Stdout.AddPipe()
if err != nil {
log.Fatalf("Create event receive pipe error:%s", err)
}
// 从管道读取事件数据并广播给所有controller
go func() {
dec := json.NewDecoder(reader)
for {
m := &dockerUtils.JSONMessage{}
if err := dec.Decode(m); err != nil {
log.Printf("Error streaming events: %s\n", err)
break
}
if b, err := json.Marshal(m); err == nil {
// 广播
log.Println("Event:", string(b))
content := utils.PacketByes(append(b, " docker_event"...))
ClusterSwitcher.Broadcast(content)
}
}
}()
return job.Run()
}
// 上报docker主机状态
func reportStatus() {
log.Println("Report status start")
tick := time.Tick(time.Duration(5) * time.Second)
for {
select {
case <-tick:
systemInfo, err := utils.GetSystemInfo()
if err != nil {
log.Println("Get system info error:", err)
}
// 包含cpu使用率，内存，交换区和负载信息
systemInfoBytes, err := json.Marshal(systemInfo)
if err != nil {
log.Println("Encode system info error:", err)
}
log.Println("Report status...")
data := utils.PacketByes(append(systemInfoBytes, " docker_status"...))
ClusterSwitcher.Broadcast(data)
}
}
log.Println("Report status finish")
}
// controller连接到docker的连接断开，广播给其他controller
func ControllerDisconnection(c *utils.Connection, data []byte) {
address := string(data)
log.Println("controller:", address, "is offline.")
delete(config.Controllers, address)
cluster.ClusterSwitcher.Broadcast(utils.PacketByes(append(data, " controller_offline"...)))
}