func()

in pkg/selector/selector.go [414:456]

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

func (itf Selector) RetrieveInstanceTypesSupportedInLocations(locations []string) (map[string]string, error) {
	if len(locations) == 0 {
		return nil, nil
	}
	availableInstanceTypes := map[string]int{}
	for _, location := range locations {
		instanceTypeOfferingsInput := &ec2.DescribeInstanceTypeOfferingsInput{
			Filters: []*ec2.Filter{
				{
					Name:   aws.String(locationFilterKey),
					Values: []*string{aws.String(location)},
				},
			},
		}
		locationType, err := itf.getLocationType(location)
		if err != nil {
			return nil, err
		}
		instanceTypeOfferingsInput.SetLocationType(locationType)

		err = itf.EC2.DescribeInstanceTypeOfferingsPages(instanceTypeOfferingsInput, func(page *ec2.DescribeInstanceTypeOfferingsOutput, lastPage bool) bool {
			for _, instanceType := range page.InstanceTypeOfferings {
				if i, ok := availableInstanceTypes[*instanceType.InstanceType]; !ok {
					availableInstanceTypes[*instanceType.InstanceType] = 1
				} else {
					availableInstanceTypes[*instanceType.InstanceType] = i + 1
				}
			}
			return true
		})
		if err != nil {
			return nil, fmt.Errorf("Encountered an error when describing instance type offerings: %w", err)
		}
	}
	availableInstanceTypesAllLocations := map[string]string{}
	for instanceType, locationsSupported := range availableInstanceTypes {
		if locationsSupported == len(locations) {
			availableInstanceTypesAllLocations[instanceType] = ""
		}
	}

	return availableInstanceTypesAllLocations, nil
}