-
Notifications
You must be signed in to change notification settings - Fork 17
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
1 parent
d61361f
commit c13ac65
Showing
10 changed files
with
430 additions
and
82 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
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| package v1 | ||
|
|
||
| import ( | ||
| gocontext "context" | ||
| "encoding/base64" | ||
| "fmt" | ||
| "net/http" | ||
| "time" | ||
|
|
||
| "github.com/aws/aws-sdk-go-v2/aws" | ||
| signerv4 "github.com/aws/aws-sdk-go-v2/aws/signer/v4" | ||
| "github.com/aws/aws-sdk-go-v2/service/eks" | ||
| dutyKubernetes "github.com/flanksource/duty/kubernetes" | ||
|
|
||
| "github.com/flanksource/duty/connection" | ||
| "github.com/flanksource/duty/context" | ||
| "github.com/flanksource/duty/types" | ||
| "k8s.io/client-go/kubernetes" | ||
| rest "k8s.io/client-go/rest" | ||
| ) | ||
|
|
||
| const ( | ||
| clusterIDHeader = "x-k8s-aws-id" | ||
| emptyStringSha256 = "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" | ||
| v1Prefix = "k8s-aws-v1." | ||
| ) | ||
|
|
||
| type EKSConnection struct { | ||
| connection.AWSConnection `json:",inline" yaml:",inline"` | ||
|
|
||
| Cluster string `json:"cluster"` | ||
| } | ||
|
|
||
| type KubernetesConnection struct { | ||
| Kubeconfig *types.EnvVar `json:"kubeconfig,omitempty"` | ||
| EKS *EKSConnection `json:"eks,omitempty"` | ||
| } | ||
|
|
||
| func (t *KubernetesConnection) Populate(ctx context.Context) (kubernetes.Interface, *rest.Config, error) { | ||
| if t.Kubeconfig != nil { | ||
| return dutyKubernetes.NewClientFromPathOrConfig(ctx.Logger, t.Kubeconfig.ValueStatic) | ||
| } | ||
|
|
||
| if t.EKS != nil { | ||
| if err := t.EKS.Populate(ctx); err != nil { | ||
| return nil, nil, err | ||
| } | ||
|
|
||
| conf, err := t.EKS.Client(ctx) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
|
|
||
| eksEndpoint, ca, err := eksClusterDetails(ctx, t.EKS.Cluster, conf) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
|
|
||
| token, err := getToken(ctx, t.EKS.Cluster, conf) | ||
| if err != nil { | ||
| return nil, nil, fmt.Errorf("failed to get token for EKS: %w", err) | ||
| } | ||
|
|
||
| restConfig := &rest.Config{ | ||
| Host: eksEndpoint, | ||
| BearerToken: token, | ||
| TLSClientConfig: rest.TLSClientConfig{ | ||
| CAData: ca, | ||
| }, | ||
| } | ||
|
|
||
| clientset, err := kubernetes.NewForConfig(restConfig) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
|
|
||
| return clientset, restConfig, nil | ||
| } | ||
|
|
||
| return nil, nil, nil | ||
| } | ||
|
|
||
| func eksClusterDetails(ctx gocontext.Context, clusterName string, conf aws.Config) (string, []byte, error) { | ||
| eksClient := eks.NewFromConfig(conf) | ||
| cluster, err := eksClient.DescribeCluster(ctx, &eks.DescribeClusterInput{Name: &clusterName}) | ||
| if err != nil { | ||
| return "", nil, fmt.Errorf("unable to get cluster info: %v", err) | ||
| } | ||
|
|
||
| ca, err := base64.URLEncoding.DecodeString(*cluster.Cluster.CertificateAuthority.Data) | ||
| if err != nil { | ||
| return "", nil, fmt.Errorf("unable to presign URL: %v", err) | ||
| } | ||
|
|
||
| return *cluster.Cluster.Endpoint, ca, nil | ||
| } | ||
|
|
||
| func getToken(ctx gocontext.Context, cluster string, conf aws.Config) (string, error) { | ||
| cred, err := conf.Credentials.Retrieve(ctx) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to retrive credentials from aws config: %w", err) | ||
| } | ||
|
|
||
| signedURI, err := getSignedURI(ctx, cluster, cred) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to get signed URI: %w", err) | ||
| } | ||
|
|
||
| token := v1Prefix + base64.RawURLEncoding.EncodeToString([]byte(signedURI)) | ||
| return token, nil | ||
| } | ||
|
|
||
| func getSignedURI(ctx gocontext.Context, cluster string, cred aws.Credentials) (string, error) { | ||
| request, err := http.NewRequest(http.MethodGet, "https://sts.amazonaws.com/?Action=GetCallerIdentity&Version=2011-06-15", nil) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| request.Header.Add(clusterIDHeader, cluster) | ||
| request.Header.Add("X-Amz-Expires", "0") | ||
| signer := signerv4.NewSigner() | ||
| signedURI, _, err := signer.PresignHTTP(ctx, cred, request, emptyStringSha256, "sts", "us-east-1", time.Now()) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| return signedURI, nil | ||
| } |
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Oops, something went wrong.
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
Oops, something went wrong.