func LoadConf(configFile string) (*Config, error) {
c := cfg.NewCfg(configFile)
if err := c.Load(); err != nil {
log.PanicErrorf(err, "load config '%s' failed", configFile)
}
conf := &Config{}
// 读取product
conf.ProductName, _ = c.ReadString("product", "test")
if len(conf.ProductName) == 0 {
log.Panicf("invalid config: product entry is missing in %s", configFile)
}
// 读取zk
conf.ZkAddr, _ = c.ReadString("zk", "")
if len(conf.ZkAddr) == 0 {
log.Panicf("invalid config: need zk entry is missing in %s", configFile)
}
conf.ZkAddr = strings.TrimSpace(conf.ZkAddr)
loadConfInt := func(entry string, defInt int) int {
v, _ := c.ReadInt(entry, defInt)
if v < 0 {
log.Panicf("invalid config: read %s = %d", entry, v)
}
return v
}
conf.ZkSessionTimeout = loadConfInt("zk_session_timeout", 30)
conf.Verbose = loadConfInt("verbose", 0) == 1
conf.Service, _ = c.ReadString("service", "")
conf.Service = strings.TrimSpace(conf.Service)
conf.FrontHost, _ = c.ReadString("front_host", "")
conf.FrontHost = strings.TrimSpace(conf.FrontHost)
conf.FrontPort, _ = c.ReadString("front_port", "")
conf.FrontPort = strings.TrimSpace(conf.FrontPort)
conf.FrontendAddr = conf.getFrontendAddr()
conf.IpPrefix, _ = c.ReadString("ip_prefix", "")
conf.IpPrefix = strings.TrimSpace(conf.IpPrefix)
conf.BackAddr, _ = c.ReadString("back_address", "")
conf.BackAddr = strings.TrimSpace(conf.BackAddr)
conf.ProxyAddr, _ = c.ReadString("proxy_address", "")
conf.ProxyAddr = strings.TrimSpace(conf.ProxyAddr)
profile, _ := c.ReadInt("profile", 0)
conf.Profile = profile == 1
return conf, nil
}
//
// evtch:
// 1. 来自Zookeeper驱动通知
// 2. 该通知最终需要通过 evtbus 传递给其他人
//
func (top *Topology) doWatch(evtch <-chan topo.Event, evtbus chan interface{}) {
e := <-evtch
if e.State == topo.StateExpired || e.Type == topo.EventNotWatching {
log.Panicf("session expired: %+v", e)
}
log.Warnf("topo event %+v", e)
switch e.Type {
//case topo.EventNodeCreated:
//case topo.EventNodeDataChanged:
case topo.EventNodeChildrenChanged: //only care children changed
//todo:get changed node and decode event
default:
// log.Warnf("%+v", e)
}
evtbus <- e
}