95 lines
2.7 KiB
Go
95 lines
2.7 KiB
Go
/*
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Copyright 2022 The Karmada Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package helper
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import (
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"context"
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"crypto/tls"
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"encoding/base64"
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"fmt"
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"net/http"
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"time"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/client-go/kubernetes"
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"k8s.io/klog/v2"
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)
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const (
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// pollInterval defines the interval time for a poll operation.
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pollInterval = 5 * time.Second
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// pollTimeout defines the time after which the poll operation times out.
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pollTimeout = 300 * time.Second
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)
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// GetTokenFromServiceAccount get token from serviceAccount's related secret.
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func GetTokenFromServiceAccount(client kubernetes.Interface, saNamespace, saName string) (string, error) {
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klog.Infof("Get serviceAccount(%s/%s)'s refer secret", saNamespace, saName)
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var token string
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err := wait.PollUntilContextTimeout(context.TODO(), pollInterval, pollTimeout, true, func(ctx context.Context) (done bool, err error) {
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saRefSecret, err := client.CoreV1().Secrets(saNamespace).Get(ctx, saName, metav1.GetOptions{})
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if err != nil {
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if apierrors.IsNotFound(err) {
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return false, nil
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}
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klog.Errorf("Failed to get serviceAccount(%s/%s)'s refer secret, error: %v", saNamespace, saName, err)
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return false, nil
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}
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tokenByte, ok := saRefSecret.Data["token"]
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if !ok {
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return false, nil
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}
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token = base64.StdEncoding.EncodeToString(tokenByte)
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return true, nil
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})
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if err != nil {
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return "", err
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}
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return token, nil
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}
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// DoRequest use bearer token to call karmada-apiserver.
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func DoRequest(urlPath string, token string) (int, error) {
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decodeToken, err := base64.StdEncoding.DecodeString(token)
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if err != nil {
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klog.Infof("DoRequest decode token failed: %v", err)
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return 0, err
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}
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bearToken := fmt.Sprintf("Bearer %s", string(decodeToken))
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res, err := http.NewRequest(http.MethodGet, urlPath, nil)
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if err != nil {
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return 0, err
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}
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res.Header.Add("Authorization", bearToken)
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transport := &http.Transport{
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TLSClientConfig: &tls.Config{InsecureSkipVerify: true}, // nolint:gosec // G402: TLS InsecureSkipVerify set true.
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}
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httpClient := &http.Client{Transport: transport}
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resp, err := httpClient.Do(res)
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if err != nil {
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return 0, err
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}
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defer resp.Body.Close()
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return resp.StatusCode, nil
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}
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