func()

in google_guest_agent/addresses.go [186:231]

• 41 lines of code
• 12 McCabe index (conditional complexity)

func (a *addressMgr) applyWSFCFilter(config *cfg.Sections) {
	wsfcAddresses := a.parseWSFCAddresses(config)

	var wsfcAddrs []string
	for _, wsfcAddr := range strings.Split(wsfcAddresses, ",") {
		if wsfcAddr == "" {
			continue
		}

		if net.ParseIP(wsfcAddr) == nil {
			logger.Errorf("Address for WSFC is not in valid form %s", wsfcAddr)
			continue
		}

		wsfcAddrs = append(wsfcAddrs, wsfcAddr)
	}

	if len(wsfcAddrs) != 0 {
		interfaces := newMetadata.Instance.NetworkInterfaces
		for idx := range interfaces {
			var filteredForwardedIps []string
			for _, ip := range interfaces[idx].ForwardedIps {
				if !slices.Contains(wsfcAddrs, ip) {
					filteredForwardedIps = append(filteredForwardedIps, ip)
				}
			}
			interfaces[idx].ForwardedIps = filteredForwardedIps

			var filteredTargetInstanceIps []string
			for _, ip := range interfaces[idx].TargetInstanceIps {
				if !slices.Contains(wsfcAddrs, ip) {
					filteredTargetInstanceIps = append(filteredTargetInstanceIps, ip)
				}
			}
			interfaces[idx].TargetInstanceIps = filteredTargetInstanceIps
		}
	} else {
		wsfcEnable := a.parseWSFCEnable(config)
		if wsfcEnable {
			for idx := range newMetadata.Instance.NetworkInterfaces {
				newMetadata.Instance.NetworkInterfaces[idx].ForwardedIps = nil
				newMetadata.Instance.NetworkInterfaces[idx].TargetInstanceIps = nil
			}
		}
	}
}