func (e *environ) PublicStorage() environs.StorageReader {
e.publicStorageMutex.Lock()
defer e.publicStorageMutex.Unlock()
ecfg := e.ecfg()
// If public storage has already been determined, return that instance.
publicStorage := e.publicStorageUnlocked
if publicStorage == nil && ecfg.publicBucket() == "" {
// If there is no public bucket name, then there can be no public storage.
e.publicStorageUnlocked = environs.EmptyStorage
publicStorage = e.publicStorageUnlocked
}
if publicStorage != nil {
return publicStorage
}
// If there is a public bucket URL defined, set up a public storage client referencing that URL,
// otherwise create a new public bucket using the user's credentials on the authenticated client.
publicBucketURL := e.publicBucketURL()
if publicBucketURL == "" {
e.publicStorageUnlocked = &storage{
containerName: ecfg.publicBucket(),
// this is possibly just a hack - if the ACL is swift.Private,
// the machine won't be able to get the tools (401 error)
containerACL: swift.PublicRead,
swift: swift.New(e.client)}
} else {
pc := client.NewPublicClient(publicBucketURL, nil)
e.publicStorageUnlocked = &storage{
containerName: ecfg.publicBucket(),
containerACL: swift.PublicRead,
swift: swift.New(pc)}
}
publicStorage = e.publicStorageUnlocked
return publicStorage
}
func (e *environ) publicClient(ecfg *environConfig) client.Client {
return client.NewPublicClient(ecfg.publicBucketURL(), nil)
}