Пример #1
0
// continue looking at dns entry for changes in config
func configLoop(ctx log.Interface, cfgURL string) {
	ticker := time.Tick(15 * time.Second)

	for {
		select {
		case <-ticker:
			newIPs, err := dnscfg.Get(dnsAddr, ldPort)
			if err != nil {
				ctx.WithError(err).Error("dns lookup")
				continue
			}

			if len(newIPs) == 0 {
				ctx.Error("no ip addresses found")
				continue
			}

			oldIPs, err := httpcfg.Get(cfgURL)
			if err != nil {
				ctx.WithError(err).Error("getting config")
				continue
			}

			if eq(newIPs, oldIPs) {
				ctx.Info("config up to date")
				continue
			}

			err = httpcfg.Set(cfgURL, newIPs)
			if err != nil {
				ctx.WithError(err).Error("setting config")
				continue
			}

			ctx.WithField("ips", newIPs).Info("setting config")
		}
	}
}