/
client.go
498 lines (432 loc) · 16.5 KB
/
client.go
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package openstack
import (
"context"
"fmt"
"reflect"
"strings"
"github.com/gophercloud/gophercloud/v2"
tokens2 "github.com/gophercloud/gophercloud/v2/openstack/identity/v2/tokens"
"github.com/gophercloud/gophercloud/v2/openstack/identity/v3/ec2tokens"
"github.com/gophercloud/gophercloud/v2/openstack/identity/v3/oauth1"
tokens3 "github.com/gophercloud/gophercloud/v2/openstack/identity/v3/tokens"
"github.com/gophercloud/gophercloud/v2/openstack/utils"
)
const (
// v2 represents Keystone v2.
// It should never increase beyond 2.0.
v2 = "v2.0"
// v3 represents Keystone v3.
// The version can be anything from v3 to v3.x.
v3 = "v3"
)
// NewClient prepares an unauthenticated ProviderClient instance.
// Most users will probably prefer using the AuthenticatedClient function
// instead.
//
// This is useful if you wish to explicitly control the version of the identity
// service that's used for authentication explicitly, for example.
//
// A basic example of using this would be:
//
// ao, err := openstack.AuthOptionsFromEnv()
// provider, err := openstack.NewClient(ao.IdentityEndpoint)
// client, err := openstack.NewIdentityV3(provider, gophercloud.EndpointOpts{})
func NewClient(endpoint string) (*gophercloud.ProviderClient, error) {
base, err := utils.BaseEndpoint(endpoint)
if err != nil {
return nil, err
}
endpoint = gophercloud.NormalizeURL(endpoint)
base = gophercloud.NormalizeURL(base)
p := new(gophercloud.ProviderClient)
p.IdentityBase = base
p.IdentityEndpoint = endpoint
p.UseTokenLock()
return p, nil
}
// AuthenticatedClient logs in to an OpenStack cloud found at the identity endpoint
// specified by the options, acquires a token, and returns a Provider Client
// instance that's ready to operate.
//
// If the full path to a versioned identity endpoint was specified (example:
// http://example.com:5000/v3), that path will be used as the endpoint to query.
//
// If a versionless endpoint was specified (example: http://example.com:5000/),
// the endpoint will be queried to determine which versions of the identity service
// are available, then chooses the most recent or most supported version.
//
// Example:
//
// ao, err := openstack.AuthOptionsFromEnv()
// provider, err := openstack.AuthenticatedClient(ctx, ao)
// client, err := openstack.NewNetworkV2(provider, gophercloud.EndpointOpts{
// Region: os.Getenv("OS_REGION_NAME"),
// })
func AuthenticatedClient(ctx context.Context, options gophercloud.AuthOptions) (*gophercloud.ProviderClient, error) {
client, err := NewClient(options.IdentityEndpoint)
if err != nil {
return nil, err
}
err = Authenticate(ctx, client, options)
if err != nil {
return nil, err
}
return client, nil
}
// Authenticate authenticates or re-authenticates against the most
// recent identity service supported at the provided endpoint.
func Authenticate(ctx context.Context, client *gophercloud.ProviderClient, options gophercloud.AuthOptions) error {
versions := []*utils.Version{
{ID: v2, Priority: 20, Suffix: "/v2.0/"},
{ID: v3, Priority: 30, Suffix: "/v3/"},
}
chosen, endpoint, err := utils.ChooseVersion(ctx, client, versions)
if err != nil {
return err
}
switch chosen.ID {
case v2:
return v2auth(ctx, client, endpoint, options, gophercloud.EndpointOpts{})
case v3:
return v3auth(ctx, client, endpoint, &options, gophercloud.EndpointOpts{})
default:
// The switch statement must be out of date from the versions list.
return fmt.Errorf("Unrecognized identity version: %s", chosen.ID)
}
}
// AuthenticateV2 explicitly authenticates against the identity v2 endpoint.
func AuthenticateV2(ctx context.Context, client *gophercloud.ProviderClient, options gophercloud.AuthOptions, eo gophercloud.EndpointOpts) error {
return v2auth(ctx, client, "", options, eo)
}
func v2auth(ctx context.Context, client *gophercloud.ProviderClient, endpoint string, options gophercloud.AuthOptions, eo gophercloud.EndpointOpts) error {
v2Client, err := NewIdentityV2(client, eo)
if err != nil {
return err
}
if endpoint != "" {
v2Client.Endpoint = endpoint
}
v2Opts := tokens2.AuthOptions{
IdentityEndpoint: options.IdentityEndpoint,
Username: options.Username,
Password: options.Password,
TenantID: options.TenantID,
TenantName: options.TenantName,
AllowReauth: options.AllowReauth,
TokenID: options.TokenID,
}
result := tokens2.Create(ctx, v2Client, v2Opts)
err = client.SetTokenAndAuthResult(result)
if err != nil {
return err
}
catalog, err := result.ExtractServiceCatalog()
if err != nil {
return err
}
if options.AllowReauth {
// here we're creating a throw-away client (tac). it's a copy of the user's provider client, but
// with the token and reauth func zeroed out. combined with setting `AllowReauth` to `false`,
// this should retry authentication only once
tac := *client
tac.SetThrowaway(true)
tac.ReauthFunc = nil
tac.SetTokenAndAuthResult(nil)
tao := options
tao.AllowReauth = false
client.ReauthFunc = func(ctx context.Context) error {
err := v2auth(ctx, &tac, endpoint, tao, eo)
if err != nil {
return err
}
client.CopyTokenFrom(&tac)
return nil
}
}
client.EndpointLocator = func(opts gophercloud.EndpointOpts) (string, error) {
return V2EndpointURL(catalog, opts)
}
return nil
}
// AuthenticateV3 explicitly authenticates against the identity v3 service.
func AuthenticateV3(ctx context.Context, client *gophercloud.ProviderClient, options tokens3.AuthOptionsBuilder, eo gophercloud.EndpointOpts) error {
return v3auth(ctx, client, "", options, eo)
}
func v3auth(ctx context.Context, client *gophercloud.ProviderClient, endpoint string, opts tokens3.AuthOptionsBuilder, eo gophercloud.EndpointOpts) error {
// Override the generated service endpoint with the one returned by the version endpoint.
v3Client, err := NewIdentityV3(client, eo)
if err != nil {
return err
}
if endpoint != "" {
v3Client.Endpoint = endpoint
}
var catalog *tokens3.ServiceCatalog
var tokenID string
// passthroughToken allows to passthrough the token without a scope
var passthroughToken bool
switch v := opts.(type) {
case *gophercloud.AuthOptions:
tokenID = v.TokenID
passthroughToken = (v.Scope == nil || *v.Scope == gophercloud.AuthScope{})
case *tokens3.AuthOptions:
tokenID = v.TokenID
passthroughToken = (v.Scope == tokens3.Scope{})
}
if tokenID != "" && passthroughToken {
// passing through the token ID without requesting a new scope
if opts.CanReauth() {
return fmt.Errorf("cannot use AllowReauth, when the token ID is defined and auth scope is not set")
}
v3Client.SetToken(tokenID)
result := tokens3.Get(ctx, v3Client, tokenID)
if result.Err != nil {
return result.Err
}
err = client.SetTokenAndAuthResult(result)
if err != nil {
return err
}
catalog, err = result.ExtractServiceCatalog()
if err != nil {
return err
}
} else {
var result tokens3.CreateResult
switch opts.(type) {
case *ec2tokens.AuthOptions:
result = ec2tokens.Create(ctx, v3Client, opts)
case *oauth1.AuthOptions:
result = oauth1.Create(ctx, v3Client, opts)
default:
result = tokens3.Create(ctx, v3Client, opts)
}
err = client.SetTokenAndAuthResult(result)
if err != nil {
return err
}
catalog, err = result.ExtractServiceCatalog()
if err != nil {
return err
}
}
if opts.CanReauth() {
// here we're creating a throw-away client (tac). it's a copy of the user's provider client, but
// with the token and reauth func zeroed out. combined with setting `AllowReauth` to `false`,
// this should retry authentication only once
tac := *client
tac.SetThrowaway(true)
tac.ReauthFunc = nil
tac.SetTokenAndAuthResult(nil)
var tao tokens3.AuthOptionsBuilder
switch ot := opts.(type) {
case *gophercloud.AuthOptions:
o := *ot
o.AllowReauth = false
tao = &o
case *tokens3.AuthOptions:
o := *ot
o.AllowReauth = false
tao = &o
case *ec2tokens.AuthOptions:
o := *ot
o.AllowReauth = false
tao = &o
case *oauth1.AuthOptions:
o := *ot
o.AllowReauth = false
tao = &o
default:
tao = opts
}
client.ReauthFunc = func(ctx context.Context) error {
err := v3auth(ctx, &tac, endpoint, tao, eo)
if err != nil {
return err
}
client.CopyTokenFrom(&tac)
return nil
}
}
client.EndpointLocator = func(opts gophercloud.EndpointOpts) (string, error) {
return V3EndpointURL(catalog, opts)
}
return nil
}
// NewIdentityV2 creates a ServiceClient that may be used to interact with the
// v2 identity service.
func NewIdentityV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
endpoint := client.IdentityBase + "v2.0/"
clientType := "identity"
var err error
if !reflect.DeepEqual(eo, gophercloud.EndpointOpts{}) {
eo.ApplyDefaults(clientType)
endpoint, err = client.EndpointLocator(eo)
if err != nil {
return nil, err
}
}
return &gophercloud.ServiceClient{
ProviderClient: client,
Endpoint: endpoint,
Type: clientType,
}, nil
}
// NewIdentityV3 creates a ServiceClient that may be used to access the v3
// identity service.
func NewIdentityV3(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
endpoint := client.IdentityBase + "v3/"
clientType := "identity"
var err error
if !reflect.DeepEqual(eo, gophercloud.EndpointOpts{}) {
eo.ApplyDefaults(clientType)
endpoint, err = client.EndpointLocator(eo)
if err != nil {
return nil, err
}
}
// Ensure endpoint still has a suffix of v3.
// This is because EndpointLocator might have found a versionless
// endpoint or the published endpoint is still /v2.0. In both
// cases, we need to fix the endpoint to point to /v3.
base, err := utils.BaseEndpoint(endpoint)
if err != nil {
return nil, err
}
base = gophercloud.NormalizeURL(base)
endpoint = base + "v3/"
return &gophercloud.ServiceClient{
ProviderClient: client,
Endpoint: endpoint,
Type: clientType,
}, nil
}
func initClientOpts(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts, clientType string) (*gophercloud.ServiceClient, error) {
sc := new(gophercloud.ServiceClient)
eo.ApplyDefaults(clientType)
url, err := client.EndpointLocator(eo)
if err != nil {
return sc, err
}
sc.ProviderClient = client
sc.Endpoint = url
sc.Type = clientType
return sc, nil
}
// NewBareMetalV1 creates a ServiceClient that may be used with the v1
// bare metal package.
func NewBareMetalV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
sc, err := initClientOpts(client, eo, "baremetal")
if !strings.HasSuffix(strings.TrimSuffix(sc.Endpoint, "/"), "v1") {
sc.ResourceBase = sc.Endpoint + "v1/"
}
return sc, err
}
// NewBareMetalIntrospectionV1 creates a ServiceClient that may be used with the v1
// bare metal introspection package.
func NewBareMetalIntrospectionV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "baremetal-introspection")
}
// NewObjectStorageV1 creates a ServiceClient that may be used with the v1
// object storage package.
func NewObjectStorageV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "object-store")
}
// NewComputeV2 creates a ServiceClient that may be used with the v2 compute
// package.
func NewComputeV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "compute")
}
// NewNetworkV2 creates a ServiceClient that may be used with the v2 network
// package.
func NewNetworkV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
sc, err := initClientOpts(client, eo, "network")
sc.ResourceBase = sc.Endpoint + "v2.0/"
return sc, err
}
// NewBlockStorageV1 creates a ServiceClient that may be used to access the v1
// block storage service.
func NewBlockStorageV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "volume")
}
// NewBlockStorageV2 creates a ServiceClient that may be used to access the v2
// block storage service.
func NewBlockStorageV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "volumev2")
}
// NewBlockStorageV3 creates a ServiceClient that may be used to access the v3 block storage service.
func NewBlockStorageV3(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "volumev3")
}
// NewSharedFileSystemV2 creates a ServiceClient that may be used to access the v2 shared file system service.
func NewSharedFileSystemV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "sharev2")
}
// NewOrchestrationV1 creates a ServiceClient that may be used to access the v1
// orchestration service.
func NewOrchestrationV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "orchestration")
}
// NewDBV1 creates a ServiceClient that may be used to access the v1 DB service.
func NewDBV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "database")
}
// NewDNSV2 creates a ServiceClient that may be used to access the v2 DNS
// service.
func NewDNSV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
sc, err := initClientOpts(client, eo, "dns")
sc.ResourceBase = sc.Endpoint + "v2/"
return sc, err
}
// NewImageV2 creates a ServiceClient that may be used to access the v2 image
// service.
func NewImageV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
sc, err := initClientOpts(client, eo, "image")
sc.ResourceBase = sc.Endpoint + "v2/"
return sc, err
}
// NewLoadBalancerV2 creates a ServiceClient that may be used to access the v2
// load balancer service.
func NewLoadBalancerV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
sc, err := initClientOpts(client, eo, "load-balancer")
// Fixes edge case having an OpenStack lb endpoint with trailing version number.
endpoint := strings.Replace(sc.Endpoint, "v2.0/", "", -1)
sc.ResourceBase = endpoint + "v2.0/"
return sc, err
}
// NewClusteringV1 creates a ServiceClient that may be used with the v1 clustering
// package.
func NewClusteringV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "clustering")
}
// NewMessagingV2 creates a ServiceClient that may be used with the v2 messaging
// service.
func NewMessagingV2(client *gophercloud.ProviderClient, clientID string, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
sc, err := initClientOpts(client, eo, "messaging")
sc.MoreHeaders = map[string]string{"Client-ID": clientID}
return sc, err
}
// NewContainerV1 creates a ServiceClient that may be used with v1 container package
func NewContainerV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "container")
}
// NewKeyManagerV1 creates a ServiceClient that may be used with the v1 key
// manager service.
func NewKeyManagerV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
sc, err := initClientOpts(client, eo, "key-manager")
sc.ResourceBase = sc.Endpoint + "v1/"
return sc, err
}
// NewContainerInfraV1 creates a ServiceClient that may be used with the v1 container infra management
// package.
func NewContainerInfraV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "container-infra")
}
// NewWorkflowV2 creates a ServiceClient that may be used with the v2 workflow management package.
func NewWorkflowV2(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "workflowv2")
}
// NewPlacementV1 creates a ServiceClient that may be used with the placement package.
func NewPlacementV1(client *gophercloud.ProviderClient, eo gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error) {
return initClientOpts(client, eo, "placement")
}