func PruneIngressRules()

in pkg/brownfield/ingress.go [15:65]
44 lines of code
12 McCabe index (conditional complexity)

func PruneIngressRules(ing *networking.Ingress, prohibitedTargets []*ptv1.AzureIngressProhibitedTarget) []networking.IngressRule {

	if ing.Spec.Rules == nil || len(ing.Spec.Rules) == 0 {
		return ing.Spec.Rules
	}

	blacklist := GetTargetBlacklist(prohibitedTargets)

	if blacklist == nil || len(*blacklist) == 0 {
		return ing.Spec.Rules
	}

	var rules []networking.IngressRule

	for _, rule := range ing.Spec.Rules {
		if rule.HTTP == nil {
			continue
		}
		target := Target{
			Hostname: rule.Host,
		}
		if rule.HTTP.Paths == nil {
			if target.IsBlacklisted(blacklist) {
				continue
			}
			rules = append(rules, rule)
			continue // to next rule
		}

		newRule := networking.IngressRule{
			Host: rule.Host,
			IngressRuleValue: networking.IngressRuleValue{
				HTTP: &networking.HTTPIngressRuleValue{
					Paths: []networking.HTTPIngressPath{},
				},
			},
		}
		for _, path := range rule.HTTP.Paths {
			target.Path = TargetPath(path.Path)
			if target.IsBlacklisted(blacklist) {
				continue
			}
			newRule.HTTP.Paths = append(newRule.HTTP.Paths, path)
		}
		if len(newRule.HTTP.Paths) > 0 {
			rules = append(rules, newRule)
		}
	}

	return rules
}