Let's expose it in openstack/ instead.
I can't move endpoint location into a method on anything in identity v3, so for symmetry
I'm keeping them in the openstack/ provider directory. I will export them, though, so I
can call them in rackspace/.
diff --git a/openstack/endpoint_location.go b/openstack/endpoint_location.go
new file mode 100644
index 0000000..52c5221
--- /dev/null
+++ b/openstack/endpoint_location.go
@@ -0,0 +1,52 @@
+package openstack
+
+import (
+ "fmt"
+
+ "github.com/rackspace/gophercloud"
+ tokens2 "github.com/rackspace/gophercloud/openstack/identity/v2/tokens"
+)
+
+// V2EndpointURL discovers the endpoint URL for a specific service from a ServiceCatalog acquired
+// during the v2 identity service. The specified EndpointOpts are used to identify a unique,
+// unambiguous endpoint to return. It's an error both when multiple endpoints match the provided
+// criteria and when none do. The minimum that can be specified is a Type, but you will also often
+// need to specify a Name and/or a Region depending on what's available on your OpenStack
+// deployment.
+func V2EndpointURL(catalog *tokens2.ServiceCatalog, opts gophercloud.EndpointOpts) (string, error) {
+ // Extract Endpoints from the catalog entries that match the requested Type, Name if provided, and Region if provided.
+ var endpoints = make([]tokens2.Endpoint, 0, 1)
+ for _, entry := range catalog.Entries {
+ if (entry.Type == opts.Type) && (opts.Name == "" || entry.Name == opts.Name) {
+ for _, endpoint := range entry.Endpoints {
+ if opts.Region == "" || endpoint.Region == opts.Region {
+ endpoints = append(endpoints, endpoint)
+ }
+ }
+ }
+ }
+
+ // Report an error if the options were ambiguous.
+ if len(endpoints) == 0 {
+ return "", gophercloud.ErrEndpointNotFound
+ }
+ if len(endpoints) > 1 {
+ return "", fmt.Errorf("Discovered %d matching endpoints: %#v", len(endpoints), endpoints)
+ }
+
+ // Extract the appropriate URL from the matching Endpoint.
+ for _, endpoint := range endpoints {
+ switch opts.Availability {
+ case gophercloud.AvailabilityPublic:
+ return gophercloud.NormalizeURL(endpoint.PublicURL), nil
+ case gophercloud.AvailabilityInternal:
+ return gophercloud.NormalizeURL(endpoint.InternalURL), nil
+ case gophercloud.AvailabilityAdmin:
+ return gophercloud.NormalizeURL(endpoint.AdminURL), nil
+ default:
+ return "", fmt.Errorf("Unexpected availability in endpoint query: %s", opts.Availability)
+ }
+ }
+
+ return "", gophercloud.ErrEndpointNotFound
+}