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package rackspace
import (
"fmt"
"os"
"github.com/rackspace/gophercloud"
)
var nilOptions = gophercloud.AuthOptions{}
// ErrNoAuthUrl, ErrNoUsername, and ErrNoPassword errors indicate of the
// required RS_AUTH_URL, RS_USERNAME, or RS_PASSWORD environment variables,
// respectively, remain undefined. See the AuthOptions() function for more details.
var (
ErrNoAuthURL = fmt.Errorf("Environment variable RS_AUTH_URL or OS_AUTH_URL need to be set.")
ErrNoUsername = fmt.Errorf("Environment variable RS_USERNAME or OS_USERNAME need to be set.")
ErrNoPassword = fmt.Errorf("Environment variable RS_API_KEY or RS_PASSWORD needs to be set.")
)
func prefixedEnv(base string) string {
value := os.Getenv("RS_" + base)
if value == "" {
value = os.Getenv("OS_" + base)
}
return value
}
// AuthOptionsFromEnv fills out an identity.AuthOptions structure with the
// settings found on the various Rackspace RS_* environment variables.
func AuthOptionsFromEnv() (gophercloud.AuthOptions, error) {
authURL := prefixedEnv("AUTH_URL")
username := prefixedEnv("USERNAME")
password := prefixedEnv("PASSWORD")
apiKey := prefixedEnv("API_KEY")
if authURL == "" {
return nilOptions, ErrNoAuthURL
}
if username == "" {
return nilOptions, ErrNoUsername
}
if password == "" && apiKey == "" {
return nilOptions, ErrNoPassword
}
ao := gophercloud.AuthOptions{
IdentityEndpoint: authURL,
Username: username,
Password: password,
APIKey: apiKey,
}
return ao, nil
}
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