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driver_cephobject_utils.go
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/
driver_cephobject_utils.go
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package drivers
import (
"context"
"encoding/json"
"fmt"
"net/http"
"strings"
"time"
"github.com/canonical/lxd/shared"
"github.com/canonical/lxd/shared/api"
"github.com/canonical/lxd/shared/revert"
)
// radosgwadmin wrapper around radosgw-admin command.
func (d *cephobject) radosgwadmin(ctx context.Context, args ...string) (string, error) {
_, ok := ctx.Deadline()
if !ok {
// Set default timeout of 30s if no deadline context provided.
var cancel context.CancelFunc
ctx, cancel = context.WithTimeout(ctx, time.Duration(30*time.Second))
defer cancel()
}
cmd := []string{"radosgw-admin", "--cluster", d.config["cephobject.cluster_name"], "--id", d.config["cephobject.user.name"]}
cmd = append(cmd, args...)
return shared.RunCommandContext(ctx, cmd[0], cmd[1:]...)
}
// radosgwadminGetUser returns credentials for an existing radosgw user (and its sub users).
// If no user exists returns api.StatusError with status code set to http.StatusNotFound.
func (d *cephobject) radosgwadminGetUser(ctx context.Context, user string) (*S3Credentials, map[string]S3Credentials, error) {
out, err := d.radosgwadmin(ctx, "user", "info", "--uid", user)
if err != nil {
status, _ := shared.ExitStatus(err)
if status == 22 {
return nil, nil, api.StatusErrorf(http.StatusNotFound, "User not found")
}
return nil, nil, fmt.Errorf("Failed getting user %q info: %w", user, err)
}
resp := struct {
SubUsers []struct {
ID string `json:"id"`
} `json:"subusers"`
Keys []struct {
S3Credentials `yaml:",inline"`
User string `json:"user"`
} `json:"keys"`
}{}
err = json.Unmarshal([]byte(out), &resp)
if err != nil {
return nil, nil, err
}
// Get list of sub user names and store them without the main user prefix.
subUsers := make(map[string]S3Credentials, len(resp.SubUsers))
for _, subUser := range resp.SubUsers {
subUserName := strings.TrimPrefix(subUser.ID, fmt.Sprintf("%s:", user))
subUsers[subUserName] = S3Credentials{}
}
var userKey *S3Credentials
// Iterate through the keys extracting the main user key and keys for the known sub users.
for _, key := range resp.Keys {
if key.User == user {
userKey = &S3Credentials{
AccessKey: key.AccessKey,
SecretKey: key.SecretKey,
}
} else {
for subUserName := range subUsers {
if strings.TrimPrefix(key.User, fmt.Sprintf("%s:", user)) == subUserName {
subUser := subUsers[subUserName]
subUser.AccessKey = key.AccessKey
subUser.SecretKey = key.SecretKey
subUsers[subUserName] = subUser
}
}
}
}
if userKey == nil {
return nil, nil, fmt.Errorf("S3 credentials not found for %q user", user)
}
return userKey, subUsers, nil
}
// radosgwadminUserAdd creates a radosgw user and return generated credentials.
func (d *cephobject) radosgwadminUserAdd(ctx context.Context, user string, maxBuckets int) (*S3Credentials, error) {
revert := revert.New()
defer revert.Fail()
out, err := d.radosgwadmin(ctx, "user", "create", "--max-buckets", fmt.Sprintf("%d", maxBuckets), "--display-name", user, "--uid", user)
if err != nil {
return nil, err
}
revert.Add(func() { _ = d.radosgwadminUserDelete(ctx, user) })
creds := struct {
Keys []struct {
S3Credentials `yaml:",inline"`
User string `json:"user"`
} `json:"keys"`
}{}
err = json.Unmarshal([]byte(out), &creds)
if err != nil {
return nil, err
}
for _, key := range creds.Keys {
if key.User == user {
revert.Success()
return &S3Credentials{AccessKey: key.AccessKey, SecretKey: key.SecretKey}, err
}
}
return nil, fmt.Errorf("S3 credentials not found for %q user", user)
}
// radosgwadminUserDelete deletes radosgw user.
func (d *cephobject) radosgwadminUserDelete(ctx context.Context, user string) error {
_, err := d.radosgwadmin(ctx, "user", "rm", "--uid", user, "--purge-data")
return err
}
// radosgwadminSubUserAdd adds a radosgw sub user.
func (d *cephobject) radosgwadminSubUserAdd(ctx context.Context, user string, subuser string, accessRole string, accessKey string, secretKey string) (*S3Credentials, error) {
revert := revert.New()
defer revert.Fail()
args := []string{"subuser", "create", "--uid", user, "--key-type", "s3", "--subuser", subuser, "--access", accessRole}
if accessKey == "" {
args = append(args, "--gen-access-key")
} else {
args = append(args, "--access-key", accessKey)
}
if secretKey == "" {
args = append(args, "--gen-secret")
} else {
args = append(args, "--secret", secretKey)
}
out, err := d.radosgwadmin(ctx, args...)
if err != nil {
return nil, err
}
revert.Add(func() { _ = d.radosgwadminUserDelete(ctx, user) })
creds := struct {
Keys []struct {
S3Credentials `yaml:",inline"`
User string `json:"user"`
} `json:"keys"`
}{}
err = json.Unmarshal([]byte(out), &creds)
if err != nil {
return nil, err
}
keyUser := fmt.Sprintf("%s:%s", user, subuser)
for _, key := range creds.Keys {
if key.User == keyUser {
revert.Success()
return &S3Credentials{AccessKey: key.AccessKey, SecretKey: key.SecretKey}, err
}
}
return nil, fmt.Errorf("S3 credentials not found for %q user", keyUser)
}
// radosgwadminSubUserDelete deletes radosgw sub-user.
func (d *cephobject) radosgwadminSubUserDelete(ctx context.Context, user string, subuser string) error {
_, err := d.radosgwadmin(ctx, "subuser", "rm", "--uid", user, "--subuser", subuser)
return err
}
// radosgwadminBucketDelete deletes radosgw bucket.
func (d *cephobject) radosgwadminBucketDelete(ctx context.Context, bucket string) error {
_, err := d.radosgwadmin(ctx, "bucket", "rm", "--bucket", bucket, "--purge-objects")
return err
}
// radosgwadminBucketLink links a bucket to a user.
func (d *cephobject) radosgwadminBucketLink(ctx context.Context, bucket string, user string) error {
_, err := d.radosgwadmin(ctx, "bucket", "link", "--bucket", bucket, "--uid", user)
return err
}
// radosgwadminBucketSetQuota sets bucket quota.
func (d *cephobject) radosgwadminBucketSetQuota(ctx context.Context, bucket string, user string, size int64) error {
if size > 0 {
_, err := d.radosgwadmin(ctx, "quota", "enable", "--quota-scope=bucket", "--uid", user)
if err != nil {
return err
}
_, err = d.radosgwadmin(ctx, "quota", "set", "--quota-scope=bucket", "--uid", user, "--max-size", fmt.Sprintf("%d", size))
if err != nil {
return err
}
} else {
_, err := d.radosgwadmin(ctx, "quota", "disable", "--quota-scope=bucket", "--uid", user)
if err != nil {
return err
}
_, err = d.radosgwadmin(ctx, "quota", "set", "--quota-scope=bucket", "--uid", user, "--max-size", "-1")
if err != nil {
return err
}
}
return nil
}
// radosgwadminBucketList returns the list of buckets.
func (d *cephobject) radosgwadminBucketList(ctx context.Context) ([]string, error) {
out, err := d.radosgwadmin(ctx, "bucket", "list")
if err != nil {
return nil, err
}
buckets := []string{}
err = json.Unmarshal([]byte(out), &buckets)
if err != nil {
return nil, err
}
return buckets, nil
}
// radosgwBucketName returns the bucket name to use for the actual radosgw bucket.
func (d *cephobject) radosgwBucketName(bucketName string) string {
return fmt.Sprintf("%s%s", d.config["cephobject.bucket.name_prefix"], bucketName)
}