-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
6 changed files
with
226 additions
and
17 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| package teleportclient | ||
|
|
||
| import ( | ||
| "time" | ||
|
|
||
| "k8s.io/apimachinery/pkg/util/rand" | ||
| ) | ||
|
|
||
| var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789") | ||
|
|
||
| func randSeq(n int) string { | ||
| rand.Seed(time.Now().UnixNano()) | ||
|
|
||
| b := make([]rune, n) | ||
| for i := range b { | ||
| b[i] = letters[rand.Intn(len(letters))] | ||
| } | ||
| return string(b) | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1,153 @@ | ||
| package teleportclient | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "time" | ||
|
|
||
| "github.com/giantswarm/microerror" | ||
| tc "github.com/gravitational/teleport/api/client" | ||
| tt "github.com/gravitational/teleport/api/types" | ||
| corev1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "sigs.k8s.io/controller-runtime/pkg/client/config" | ||
| ) | ||
|
|
||
| type TeleportClient struct { | ||
| ProxyAddr string | ||
| IdentityFile string | ||
| } | ||
|
|
||
| const TELEPORT_JOIN_TOKEN_VALIDITY = 1 * time.Hour | ||
|
|
||
| func New(namespace string) (*TeleportClient, error) { | ||
| // Get a config to talk to the apiserver | ||
| cfg, err := config.GetConfig() | ||
| if err != nil { | ||
| fmt.Println("unable to get config to talk to the apiserver:", err) | ||
| return nil, err | ||
| } | ||
|
|
||
| // Create a new client | ||
| c, err := client.New(cfg, client.Options{}) | ||
| if err != nil { | ||
| fmt.Println("unable to create a new client:", err) | ||
| return nil, err | ||
| } | ||
|
|
||
| // Check if the Secret exists | ||
| secret := &corev1.Secret{} | ||
| secretNamespacedName := types.NamespacedName{ | ||
| Name: "teleport-operator", | ||
| Namespace: namespace, // Replace with the correct namespace | ||
| } | ||
| if err := c.Get(context.Background(), secretNamespacedName, secret); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| proxyAddrBytes, proxyAddrOk := secret.Data["proxyAddr"] | ||
| identityFileBytes, identityFileOk := secret.Data["identityFile"] | ||
| if !proxyAddrOk && !identityFileOk { | ||
| return nil, fmt.Errorf("malformed Secret: `identityFile` or `proxyAddr` key not found") | ||
| } | ||
| identityFile := string(identityFileBytes) | ||
| proxyAddr := string(proxyAddrBytes) | ||
|
|
||
| return &TeleportClient{ | ||
| IdentityFile: identityFile, | ||
| ProxyAddr: proxyAddr, | ||
| }, nil | ||
| } | ||
|
|
||
| func (t *TeleportClient) GetClient(ctx context.Context) (*tc.Client, error) { | ||
| c, err := tc.New(ctx, tc.Config{ | ||
| Addrs: []string{ | ||
| t.ProxyAddr, | ||
| }, | ||
| Credentials: []tc.Credentials{ | ||
| tc.LoadIdentityFileFromString(t.IdentityFile), | ||
| }, | ||
| }) | ||
|
|
||
| if err != nil { | ||
| return nil, microerror.Mask(err) | ||
| } | ||
|
|
||
| _, err = c.Ping(ctx) | ||
| if err != nil { | ||
| return nil, microerror.Mask(err) | ||
| } | ||
|
|
||
| return c, nil | ||
| } | ||
|
|
||
| func (t *TeleportClient) GetToken(ctx context.Context, clusterName string) (string, error) { | ||
| clt, err := t.GetClient(ctx) | ||
| if err != nil { | ||
| return "", microerror.Mask(err) | ||
| } | ||
|
|
||
| // Look for an existing token or generate one | ||
| { | ||
| tokens, err := clt.GetTokens(ctx) | ||
| if err != nil { | ||
| return "", microerror.Mask(err) | ||
| } | ||
|
|
||
| for _, t := range tokens { | ||
| if t.GetMetadata().Labels["cluster"] == clusterName { | ||
| err = clt.DeleteToken(ctx, t.GetName()) | ||
| if err != nil { | ||
| return "", microerror.Mask(err) | ||
| } | ||
| break | ||
| } | ||
| } | ||
|
|
||
| // Generate a token | ||
| expiration := time.Now().Add(TELEPORT_JOIN_TOKEN_VALIDITY) | ||
|
|
||
| token := randSeq(32) | ||
| newToken, err := tt.NewProvisionToken(token, []tt.SystemRole{tt.RoleKube, tt.RoleNode}, expiration) | ||
| if err != nil { | ||
| return "", microerror.Mask(err) | ||
| } | ||
| oldMeta := newToken.GetMetadata() | ||
| oldMeta.Labels = map[string]string{ | ||
| "cluster": clusterName, | ||
| } | ||
| newToken.SetMetadata(oldMeta) | ||
| err = clt.UpsertToken(ctx, newToken) | ||
| if err != nil { | ||
| return "", microerror.Mask(err) | ||
| } | ||
|
|
||
| return token, nil | ||
| } | ||
| } | ||
|
|
||
| func (t *TeleportClient) HasTokenExpired(ctx context.Context, clusterName string) (bool, error) { | ||
| clt, err := t.GetClient(ctx) | ||
| if err != nil { | ||
| return false, microerror.Mask(err) | ||
| } | ||
|
|
||
| { | ||
| tokens, err := clt.GetTokens(ctx) | ||
| if err != nil { | ||
| return false, microerror.Mask(err) | ||
| } | ||
|
|
||
| for _, t := range tokens { | ||
| if t.GetMetadata().Labels["cluster"] == clusterName { | ||
| // Nearing expiry, less than an hour, refresh it | ||
| // if time.Since(*t.GetMetadata().Expires).Hours() < -1 { | ||
| // return true, nil | ||
| // } | ||
| return false, nil | ||
| } | ||
| } | ||
| return true, nil | ||
| } | ||
| } |