func getRegionMap() (map[string]interface{}, error) {
regionMap := map[string]map[string]string{}
for _, channel := range supportedChannels {
regions, err := coreosutil.GetAMIData(channel)
if err != nil {
return nil, err
}
for region, amis := range regions {
if region == "release_info" {
continue
}
if _, ok := regionMap[region]; !ok {
regionMap[region] = map[string]string{}
}
if ami, ok := amis["hvm"]; ok {
regionMap[region][channel] = ami
}
}
}
output := map[string]interface{}{}
for key, val := range regionMap {
output[key] = val
}
return output, nil
}
func getAMI(region, channel string) (string, error) {
regions, err := coreosutil.GetAMIData(channel)
if err != nil {
return "", fmt.Errorf("error getting ami data for channel %s: %v", channel, err)
}
amis, ok := regions[region]
if !ok {
return "", fmt.Errorf("could not find region %s for channel %s", region, channel)
}
if ami, ok := amis["hvm"]; ok {
return ami, nil
}
return "", fmt.Errorf("could not find hvm image for region %s, channel %s", region, channel)
}
// isMinImageVersion will return true if the supplied version is greater then
// or equal to the current CoreOS release indicated by the given release
// channel.
func isMinImageVersion(minVersion semver.Version, release string) (bool, error) {
metaData, err := coreosutil.GetAMIData(release)
if err != nil {
return false, fmt.Errorf("Unable to retrieve current release channel version: %v", err)
}
version, ok := metaData["release_info"]["version"]
if !ok {
return false, fmt.Errorf("Error parsing image metadata for version")
}
current, err := semver.NewVersion(version)
if err != nil {
return false, fmt.Errorf("Error parsing semver from image version %v", err)
}
if minVersion.LessThan(*current) {
return false, nil
}
return true, nil
}
func getAMI(region, channel string) (string, error) {
regionMap := map[string]map[string]string{}
for _, channel := range supportedChannels {
regions, err := coreosutil.GetAMIData(channel)
if err != nil {
return "", err
}
for region, amis := range regions {
if region == "release_info" {
continue
}
if _, ok := regionMap[region]; !ok {
regionMap[region] = map[string]string{}
}
if ami, ok := amis["hvm"]; ok {
regionMap[region][channel] = ami
}
}
}
if regionMap[region] == nil {
return "", fmt.Errorf("could not get AMI for region %s", region)
}
ami := regionMap[region][channel]
if ami == "" {
return "", fmt.Errorf("could not get AMI in region %s for channel %s", region, channel)
}
return ami, nil
}