Kaoru FUZITA <******@****.***> 1449825322 +0900

* Federation service controller is one key component of federation controller manager, it watches federation service, creates/updates services to all registered clusters, and update DNS records to global DNS server. ([#26034](https://github.com/kubernetes/kubernetes/pull/26034), [@mfanjie](https://github.com/mfanjie))

	date := sumHMAC([]byte("AWS4"+secretKey), []byte(currTime.Format(yyyymmdd)))
	region := sumHMAC(date, []byte(globalMinioDefaultRegion))
	service := sumHMAC(region, []byte(string(serviceS3)))
	signingKey := sumHMAC(service, []byte("aws4_request"))

	signature := hex.EncodeToString(sumHMAC(signingKey, []byte(stringToSign)))

	// final Authorization header
	parts := []string{

import org.apache.maven.api.services.ModelBuilderResult;
import org.apache.maven.api.services.ModelProblem;
import org.apache.maven.api.services.ModelProblem.Version;
import org.apache.maven.api.services.ModelProblemCollector;
import org.apache.maven.api.services.ModelSource;
import org.apache.maven.api.services.ModelTransformer;
import org.apache.maven.api.services.ProblemCollector;
import org.apache.maven.api.services.Source;

	// Check that the service account can access the public bucket.
	buckets, err := svcClient.ListBuckets(ctx)
	if err != nil {
		c.Fatalf("err fetching buckets %s", err)
	}
	if len(buckets) != 1 || buckets[0].Name != "public" {
		c.Fatalf("service account should only have access to public bucket")
	}

	// Create an madmin client with the service account creds.

	info := madmin.GetSysConfig(context.Background(), globalLocalNodeName)
	return madminSysConfig.NewJSONWith(&info), nil
}

// GetSysServicesHandler - returns system services information.
// (only the services that are of concern to minio)
func (s *peerRESTServer) GetSysServicesHandler(_ *grid.MSS) (*grid.JSON[madmin.SysServices], *grid.RemoteErr) {

		if scred.ParentUser != parentUser {
			return updatedAt, fmt.Errorf("%w: the service account access key is taken by another user", errIAMServiceAccountNotAllowed)
		}
		return updatedAt, fmt.Errorf("%w: the service account access key already taken", errIAMServiceAccountNotAllowed)
	}

	// Parent user must not be a service account.
	if u, found := cache.iamUsersMap[parentUser]; found && u.Credentials.IsServiceAccount() {

		return
	}

	// Permission checks:
	//
	// 1. Any type of account (i.e. access keys (previously/still called service
	// accounts), STS accounts, internal IDP accounts, etc) with the
	// policy.UpdateServiceAccountAdminAction permission can update any service
	// account.
	//
	// 2. We would like to let a user update their own access keys, however it

	name, description          string
	expiration                 *time.Time
	allowSiteReplicatorAccount bool // allow creating internal service account for site-replication.

	claims map[string]any
}

// NewServiceAccount - create a new service account
func (sys *IAMSys) NewServiceAccount(ctx context.Context, parentUser string, groups []string, opts newServiceAccountOpts) (auth.Credentials, time.Time, error) {

		Description:    "Error parsing the Credential/X-Amz-Credential parameter; incorrect service. This endpoint belongs to \"s3\".",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrInvalidServiceSTS: {
		Code:           "AuthorizationParametersError",
		Description:    "Error parsing the Credential parameter; incorrect service. This endpoint belongs to \"sts\".",
		HTTPStatusCode: http.StatusBadRequest,
	},