92 lines
3.8 KiB
Go
92 lines
3.8 KiB
Go
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package openstack
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import (
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"fmt"
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"github.com/rackspace/gophercloud"
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tokens2 "github.com/rackspace/gophercloud/openstack/identity/v2/tokens"
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tokens3 "github.com/rackspace/gophercloud/openstack/identity/v3/tokens"
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)
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// V2EndpointURL discovers the endpoint URL for a specific service from a ServiceCatalog acquired
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// during the v2 identity service. The specified EndpointOpts are used to identify a unique,
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// unambiguous endpoint to return. It's an error both when multiple endpoints match the provided
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// criteria and when none do. The minimum that can be specified is a Type, but you will also often
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// need to specify a Name and/or a Region depending on what's available on your OpenStack
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// deployment.
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func V2EndpointURL(catalog *tokens2.ServiceCatalog, opts gophercloud.EndpointOpts) (string, error) {
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// Extract Endpoints from the catalog entries that match the requested Type, Name if provided, and Region if provided.
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var endpoints = make([]tokens2.Endpoint, 0, 1)
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for _, entry := range catalog.Entries {
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if (entry.Type == opts.Type) && (opts.Name == "" || entry.Name == opts.Name) {
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for _, endpoint := range entry.Endpoints {
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if opts.Region == "" || endpoint.Region == opts.Region {
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endpoints = append(endpoints, endpoint)
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}
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}
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}
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}
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// Report an error if the options were ambiguous.
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if len(endpoints) > 1 {
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return "", fmt.Errorf("Discovered %d matching endpoints: %#v", len(endpoints), endpoints)
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}
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// Extract the appropriate URL from the matching Endpoint.
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for _, endpoint := range endpoints {
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switch opts.Availability {
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case gophercloud.AvailabilityPublic:
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return gophercloud.NormalizeURL(endpoint.PublicURL), nil
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case gophercloud.AvailabilityInternal:
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return gophercloud.NormalizeURL(endpoint.InternalURL), nil
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case gophercloud.AvailabilityAdmin:
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return gophercloud.NormalizeURL(endpoint.AdminURL), nil
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default:
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return "", fmt.Errorf("Unexpected availability in endpoint query: %s", opts.Availability)
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}
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}
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// Report an error if there were no matching endpoints.
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return "", gophercloud.ErrEndpointNotFound
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}
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// V3EndpointURL discovers the endpoint URL for a specific service from a Catalog acquired
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// during the v3 identity service. The specified EndpointOpts are used to identify a unique,
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// unambiguous endpoint to return. It's an error both when multiple endpoints match the provided
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// criteria and when none do. The minimum that can be specified is a Type, but you will also often
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// need to specify a Name and/or a Region depending on what's available on your OpenStack
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// deployment.
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func V3EndpointURL(catalog *tokens3.ServiceCatalog, opts gophercloud.EndpointOpts) (string, error) {
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// Extract Endpoints from the catalog entries that match the requested Type, Interface,
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// Name if provided, and Region if provided.
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var endpoints = make([]tokens3.Endpoint, 0, 1)
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for _, entry := range catalog.Entries {
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if (entry.Type == opts.Type) && (opts.Name == "" || entry.Name == opts.Name) {
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for _, endpoint := range entry.Endpoints {
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if opts.Availability != gophercloud.AvailabilityAdmin &&
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opts.Availability != gophercloud.AvailabilityPublic &&
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opts.Availability != gophercloud.AvailabilityInternal {
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return "", fmt.Errorf("Unexpected availability in endpoint query: %s", opts.Availability)
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}
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if (opts.Availability == gophercloud.Availability(endpoint.Interface)) &&
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(opts.Region == "" || endpoint.Region == opts.Region) {
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endpoints = append(endpoints, endpoint)
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}
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}
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}
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}
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// Report an error if the options were ambiguous.
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if len(endpoints) > 1 {
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return "", fmt.Errorf("Discovered %d matching endpoints: %#v", len(endpoints), endpoints)
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}
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// Extract the URL from the matching Endpoint.
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for _, endpoint := range endpoints {
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return gophercloud.NormalizeURL(endpoint.URL), nil
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}
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// Report an error if there were no matching endpoints.
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return "", gophercloud.ErrEndpointNotFound
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}
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