func()

in cmd/node-cache/app/cache_app.go [200:234]

• 32 lines of code
• 9 McCabe index (conditional complexity)

func (c *CacheApp) setupNetworking() {
	if c.params.SetupIptables {
		for _, rule := range c.iptablesRules {
			exists, err := c.iptables.EnsureRule(utiliptables.Prepend, rule.table, rule.chain, rule.args...)
			switch {
			case exists:
				// debug messages can be printed by including "debug" plugin in coreFile.
				clog.Debugf("iptables rule %v for nodelocaldns already exists", rule)
				continue
			case err == nil:
				clog.Infof("Added back nodelocaldns rule - %v", rule)
				continue
			default:
				// iptables check/rule add failed with error since control reached here.
				clog.Errorf("Error checking/adding iptables rule %v, error - %v", rule, err)
				handleIPTablesError(err)
			}
		}
	}

	if c.params.SetupInterface {
		exists, err := c.netifHandle.EnsureDummyDevice(c.params.InterfaceName)
		if !exists {
			if err != nil {
				clog.Errorf("Failed to add non-existent interface %s: %s", c.params.InterfaceName, err)
				setupErrCount.WithLabelValues("interface_add").Inc()
			}
			clog.Infof("Added interface - %s", c.params.InterfaceName)
		}
		if err != nil {
			clog.Errorf("Error checking dummy device %s - %s", c.params.InterfaceName, err)
			setupErrCount.WithLabelValues("interface_check").Inc()
		}
	}
}