func GetHcnEndpointPolicies()

in network/policy/policy_windows.go [485:539]
47 lines of code
16 McCabe index (conditional complexity)

func GetHcnEndpointPolicies(policyType CNIPolicyType, policies []Policy, epInfoData map[string]interface{}, enableSnatForDns, enableMultiTenancy bool, natInfo []NATInfo) ([]hcn.EndpointPolicy, error) {
	var hcnEndPointPolicies []hcn.EndpointPolicy

	for _, policy := range policies {
		if policy.Type == policyType {
			var err error
			var endpointPolicy hcn.EndpointPolicy
			var isOutboundNatPolicy bool

			switch GetPolicyType(policy) {
			case OutBoundNatPolicy:
				endpointPolicy, err = GetHcnOutBoundNATPolicy(policy, epInfoData)
				isOutboundNatPolicy = true
			case RoutePolicy:
				endpointPolicy, err = GetHcnRoutePolicy(policy)
			case PortMappingPolicy:
				endpointPolicy, err = GetHcnPortMappingPolicy(policy)
			case ACLPolicy:
				endpointPolicy, err = GetHcnACLPolicy(policy)
			case L4WFPProxyPolicy:
				endpointPolicy, err = GetHcnL4WFPProxyPolicy(policy)
			case LoopbackDSRPolicy:
				endpointPolicy, err = GetHcnLoopbackDSRPolicy(policy)
			default:
				// return error as we should be able to parse all the policies specified
				return hcnEndPointPolicies, fmt.Errorf("Failed to set Policy: Type: %s, Data: %s", policy.Type, policy.Data)
			}

			if err != nil {
				logger.Error("Failed to parse policy", zap.Any("data", policy.Data), zap.Error(err))
				return hcnEndPointPolicies, err
			}

			if !(isOutboundNatPolicy && enableMultiTenancy && !enableSnatForDns) {
				hcnEndPointPolicies = append(hcnEndPointPolicies, endpointPolicy)
				logger.Info("Successfully retrieve endpoint policy", zap.Any("type", endpointPolicy.Type))
			}
		}
	}

	if ValidWinVerForDnsNat {
		for _, natRule := range natInfo {
			natPolicy, err := AddNATPolicyV2(natRule.VirtualIP, natRule.Destinations)
			if err != nil {
				logger.Error("Failed to retrieve NAT endpoint policy due to error", zap.Error(err))
				return hcnEndPointPolicies, err
			}

			hcnEndPointPolicies = append(hcnEndPointPolicies, natPolicy)
			logger.Info("Successfully retrieve natInfo policy", zap.Any("type", natPolicy.Type))
		}
	}

	return hcnEndPointPolicies, nil
}