func ValidateEnv()

in pkg/environment/environment.go [255:321]
55 lines of code
12 McCabe index (conditional complexity)

func ValidateEnv(env EnvVariables) error {
	if env.EnableDeployAppGateway {
		// we should not allow applicationGatewayID in create case
		if len(env.AppGwResourceID) != 0 {
			return controllererrors.NewError(
				controllererrors.ErrorNotAllowedApplicationGatewayID,
				"Please provide provide APPGW_NAME (helm var name: .appgw.name) instead of APPGW_RESOURCE_ID (helm var name: .appgw.applicationGatewayID). "+
					"You can also provided APPGW_SUBSCRIPTION_ID and APPGW_RESOURCE_GROUP",
			)
		}

		// if deploy is true, we need applicationGatewayName
		if len(env.AppGwName) == 0 {
			return controllererrors.NewError(
				controllererrors.ErrorMissingApplicationGatewayName,
				"Missing required Environment variables: AGIC requires APPGW_NAME (helm var name: appgw.name) to deploy Application Gateway",
			)
		}

		// we need one of subnetID and subnetPrefix. We generate a subnetName if it is not provided.
		if len(env.AppGwSubnetID) == 0 && len(env.AppGwSubnetPrefix) == 0 {
			// when create is true, then either we should have env.AppGwSubnetID or env.AppGwSubnetPrefix
			return controllererrors.NewError(
				controllererrors.ErrorMissingSubnetInfo,
				"Missing required Environment variables: "+
					"AGIC requires APPGW_SUBNET_PREFIX (helm var name: appgw.subnetPrefix) or APPGW_SUBNET_ID (helm var name: appgw.subnetID) of an existing subnet. "+
					"If subnetPrefix is specified, AGIC will look up a subnet with matching address prefix in the AKS cluster vnet. "+
					"If a subnet is not found, then a new subnet will be created. This will be used to deploy the Application Gateway",
			)

		}
	} else {
		// if deploy is false, we need one of appgw name or resource id
		if len(env.AppGwName) == 0 && len(env.AppGwResourceID) == 0 {
			return controllererrors.NewError(
				controllererrors.ErrorMissingApplicationGatewayNameOrApplicationGatewayID,
				"Missing required Environment variables: "+
					"Provide atleast provide APPGW_NAME (helm var name: .appgw.name) or APPGW_RESOURCE_ID (helm var name: .appgw.applicationGatewayID). "+
					"If providing APPGW_NAME, You can also provided APPGW_SUBSCRIPTION_ID (helm var name: .appgw.subscriptionId) and APPGW_RESOURCE_GROUP (helm var name: .appgw.resourceGroup)",
			)
		}
	}

	if env.WatchNamespace == "" {
		klog.V(1).Infof("%s is not set. Watching all available namespaces.", WatchNamespaceVarName)
	}

	if env.ReconcilePeriodSeconds != "" {
		reconcilePeriodSeconds, err := strconv.Atoi(env.ReconcilePeriodSeconds)
		if err != nil {
			return controllererrors.NewErrorWithInnerError(
				controllererrors.ErrorInvalidReconcilePeriod,
				err,
				"Please make sure that RECONCILE_PERIOD_SECONDS (helm var name: .reconcilePeriodSeconds) is an integer. Range: (30 - 300)",
			)
		}

		if reconcilePeriodSeconds < 30 || reconcilePeriodSeconds > 300 {
			return controllererrors.NewError(
				controllererrors.ErrorInvalidReconcilePeriod,
				"Please make sure that RECONCILE_PERIOD_SECONDS (helm var name: .reconcilePeriodSeconds) is an integer. Range: (30 - 300)",
			)
		}
	}

	return nil
}