// validateCloudRegion validates the given region name against the
// provided Cloud definition, and returns a txn.Op to include in a
// transaction to assert the same.
func validateCloudRegion(cloud jujucloud.Cloud, cloudName, regionName string) (txn.Op, error) {
// Ensure that the cloud region is valid, or if one is not specified,
// that the cloud does not support regions.
assertCloudRegionOp := txn.Op{
C: cloudsC,
Id: cloudName,
}
if regionName != "" {
region, err := jujucloud.RegionByName(cloud.Regions, regionName)
if err != nil {
return txn.Op{}, errors.Trace(err)
}
assertCloudRegionOp.Assert = bson.D{
{"regions." + region.Name, bson.D{{"$exists", true}}},
}
} else {
if len(cloud.Regions) > 0 {
return txn.Op{}, errors.NotValidf("missing CloudRegion")
}
assertCloudRegionOp.Assert = bson.D{
{"regions", bson.D{{"$exists", false}}},
}
}
return assertCloudRegionOp, nil
}
// getRegion returns the cloud.Region to use, based on the specified
// region name. If no region name is specified, and there is at least
// one region, we use the first region in the list.
func getRegion(cloud *jujucloud.Cloud, cloudName, regionName string) (jujucloud.Region, error) {
if regionName != "" {
region, err := jujucloud.RegionByName(cloud.Regions, regionName)
if err != nil {
return jujucloud.Region{}, errors.Trace(err)
}
return *region, nil
}
if len(cloud.Regions) > 0 {
// No region was specified, use the first region in the list.
return cloud.Regions[0], nil
}
return jujucloud.Region{
"", // no region name
cloud.Endpoint,
cloud.IdentityEndpoint,
cloud.StorageEndpoint,
}, nil
}
// MakeCloudSpec returns a CloudSpec from the given
// Cloud, cloud and region names, and credential.
func MakeCloudSpec(cloud jujucloud.Cloud, cloudName, cloudRegionName string, credential *jujucloud.Credential) (CloudSpec, error) {
cloudSpec := CloudSpec{
Type: cloud.Type,
Name: cloudName,
Region: cloudRegionName,
Endpoint: cloud.Endpoint,
IdentityEndpoint: cloud.IdentityEndpoint,
StorageEndpoint: cloud.StorageEndpoint,
Credential: credential,
}
if cloudRegionName != "" {
cloudRegion, err := jujucloud.RegionByName(cloud.Regions, cloudRegionName)
if err != nil {
return CloudSpec{}, errors.Annotate(err, "getting cloud region definition")
}
cloudSpec.Endpoint = cloudRegion.Endpoint
cloudSpec.IdentityEndpoint = cloudRegion.IdentityEndpoint
cloudSpec.StorageEndpoint = cloudRegion.StorageEndpoint
}
return cloudSpec, nil
}
func (c *addModelCommand) getCloudRegion(cloudClient CloudAPI) (cloudTag names.CloudTag, cloud jujucloud.Cloud, cloudRegion string, err error) {
var cloudName string
sep := strings.IndexRune(c.CloudRegion, '/')
if sep >= 0 {
// User specified "cloud/region".
cloudName, cloudRegion = c.CloudRegion[:sep], c.CloudRegion[sep+1:]
if !names.IsValidCloud(cloudName) {
return names.CloudTag{}, jujucloud.Cloud{}, "", errors.NotValidf("cloud name %q", cloudName)
}
cloudTag = names.NewCloudTag(cloudName)
if cloud, err = cloudClient.Cloud(cloudTag); err != nil {
return names.CloudTag{}, jujucloud.Cloud{}, "", errors.Trace(err)
}
} else {
// User specified "cloud" or "region". We'll try first
// for cloud (check if it's a valid cloud name, and
// whether there is a cloud by that name), and then
// as a region within the default cloud.
if names.IsValidCloud(c.CloudRegion) {
cloudName = c.CloudRegion
} else {
cloudRegion = c.CloudRegion
}
if cloudName != "" {
cloudTag = names.NewCloudTag(cloudName)
cloud, err = cloudClient.Cloud(cloudTag)
if params.IsCodeNotFound(err) {
// No such cloud with the specified name,
// so we'll try the name as a region in
// the default cloud.
cloudRegion, cloudName = cloudName, ""
} else if err != nil {
return names.CloudTag{}, jujucloud.Cloud{}, "", errors.Trace(err)
}
}
if cloudName == "" {
cloudTag, cloud, err = defaultCloud(cloudClient)
if err != nil && !errors.IsNotFound(err) {
return names.CloudTag{}, jujucloud.Cloud{}, "", errors.Trace(err)
}
}
}
if cloudRegion != "" {
// A region has been specified, make sure it exists.
if _, err := jujucloud.RegionByName(cloud.Regions, cloudRegion); err != nil {
if cloudRegion == c.CloudRegion {
// The string is not in the format cloud/region,
// so we should tell that the user that it is
// neither a cloud nor a region in the default
// cloud (or that there is no default cloud).
err := c.unsupportedCloudOrRegionError(cloudClient, cloudTag)
return names.CloudTag{}, jujucloud.Cloud{}, "", errors.Trace(err)
}
return names.CloudTag{}, jujucloud.Cloud{}, "", errors.Trace(err)
}
} else if len(cloud.Regions) > 0 {
// The first region in the list is the default.
cloudRegion = cloud.Regions[0].Name
}
return cloudTag, cloud, cloudRegion, nil
}
// GetCredentials returns a curated set of credential values for a given cloud.
// The credential key values are read from the credentials store and the provider
// finalises the values to resolve things like json files.
// If region is not specified, the default credential region is used.
func GetCredentials(
ctx *cmd.Context,
store jujuclient.CredentialGetter,
args GetCredentialsParams,
) (_ *cloud.Credential, chosenCredentialName, regionName string, _ error) {
credential, credentialName, defaultRegion, err := credentialByName(
store, args.CloudName, args.CredentialName,
)
if err != nil {
return nil, "", "", errors.Trace(err)
}
regionName = args.CloudRegion
if regionName == "" {
regionName = defaultRegion
if regionName == "" && len(args.Cloud.Regions) > 0 {
// No region was specified, use the first region
// in the list.
regionName = args.Cloud.Regions[0].Name
}
}
cloudEndpoint := args.Cloud.Endpoint
cloudIdentityEndpoint := args.Cloud.IdentityEndpoint
if regionName != "" {
region, err := cloud.RegionByName(args.Cloud.Regions, regionName)
if err != nil {
return nil, "", "", errors.Trace(err)
}
cloudEndpoint = region.Endpoint
cloudIdentityEndpoint = region.IdentityEndpoint
}
readFile := func(f string) ([]byte, error) {
f, err := utils.NormalizePath(f)
if err != nil {
return nil, errors.Trace(err)
}
return ioutil.ReadFile(f)
}
// Finalize credential against schemas supported by the provider.
provider, err := environs.Provider(args.Cloud.Type)
if err != nil {
return nil, "", "", errors.Trace(err)
}
credential, err = cloud.FinalizeCredential(
*credential, provider.CredentialSchemas(), readFile,
)
if err != nil {
return nil, "", "", errors.Annotatef(
err, "finalizing %q credential for cloud %q",
credentialName, args.CloudName,
)
}
credential, err = provider.FinalizeCredential(
ctx, environs.FinalizeCredentialParams{
Credential: *credential,
CloudEndpoint: cloudEndpoint,
CloudIdentityEndpoint: cloudIdentityEndpoint,
},
)
if err != nil {
return nil, "", "", errors.Annotatef(
err, "finalizing %q credential for cloud %q",
credentialName, args.CloudName,
)
}
return credential, credentialName, regionName, nil
}