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driver_cephobject_buckets.go
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driver_cephobject_buckets.go
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package drivers
import (
"context"
"crypto/tls"
"crypto/x509"
"fmt"
"net/http"
"net/url"
"os"
"path"
"time"
"github.com/minio/minio-go/v7"
"github.com/minio/minio-go/v7/pkg/credentials"
"github.com/lxc/lxd/lxd/operations"
"github.com/lxc/lxd/lxd/project"
"github.com/lxc/lxd/lxd/revert"
"github.com/lxc/lxd/shared"
"github.com/lxc/lxd/shared/api"
"github.com/lxc/lxd/shared/units"
)
// ValidateVolume validates the supplied volume config.
func (d *cephobject) ValidateVolume(vol Volume, removeUnknownKeys bool) error {
return d.validateVolume(vol, nil, removeUnknownKeys)
}
// s3Client returns a configured minio S3 client.
func (d *cephobject) s3Client(creds S3Credentials) (*minio.Client, error) {
u, err := url.ParseRequestURI(d.config["cephobject.radosgw.endpoint"])
if err != nil {
return nil, fmt.Errorf("Failed parsing cephobject.radosgw.endpoint: %w", err)
}
var transport http.RoundTripper
certFilePath := d.config["cephobject.radosgw.endpoint_cert_file"]
if u.Scheme == "https" && certFilePath != "" {
certFilePath = shared.HostPath(certFilePath)
// Read in the cert file.
certs, err := os.ReadFile(certFilePath)
if err != nil {
return nil, fmt.Errorf("Failed reading %q: %w", certFilePath, err)
}
rootCAs := x509.NewCertPool()
ok := rootCAs.AppendCertsFromPEM(certs)
if !ok {
return nil, fmt.Errorf("Failed adding S3 client certificates")
}
// Trust the cert pool in our client.
config := &tls.Config{
RootCAs: rootCAs,
}
transport = &http.Transport{TLSClientConfig: config}
}
minioClient, err := minio.New(path.Join(u.Host, u.Path), &minio.Options{
Creds: credentials.NewStaticV4(creds.AccessKey, creds.SecretKey, ""),
Secure: u.Scheme == "https",
Transport: transport,
})
if err != nil {
return nil, err
}
return minioClient, nil
}
// CreateBucket creates a new bucket.
func (d *cephobject) CreateBucket(bucket Volume, op *operations.Operation) error {
// Check if there is an existing cephobjectRadosgwAdminUser user.
adminUserInfo, _, err := d.radosgwadminGetUser(context.TODO(), cephobjectRadosgwAdminUser)
if err != nil && !api.StatusErrorCheck(err, http.StatusNotFound) {
return fmt.Errorf("Failed getting admin user %q: %w", cephobjectRadosgwAdminUser, err)
}
// Create missing cephobjectRadosgwAdminUser user.
if adminUserInfo == nil {
adminUserInfo, err = d.radosgwadminUserAdd(context.TODO(), cephobjectRadosgwAdminUser, 0)
if err != nil {
return fmt.Errorf("Failed added admin user %q: %w", cephobjectRadosgwAdminUser, err)
}
}
_, bucketName := project.StorageVolumeParts(bucket.name)
storageBucketName := d.radosgwBucketName(bucketName)
// Must be defined before revert so that its not cancelled by time revert.Fail runs.
ctx, ctxCancel := context.WithTimeout(context.TODO(), time.Duration(time.Second*30))
defer ctxCancel()
revert := revert.New()
defer revert.Fail()
minioClient, err := d.s3Client(*adminUserInfo)
if err != nil {
return err
}
bucketExists, err := minioClient.BucketExists(ctx, storageBucketName)
if err != nil {
return err
}
if bucketExists {
return api.StatusErrorf(http.StatusConflict, "A bucket for that name already exists")
}
// Create new bucket.
err = minioClient.MakeBucket(ctx, storageBucketName, minio.MakeBucketOptions{})
if err != nil {
return fmt.Errorf("Failed creating bucket: %w", err)
}
revert.Add(func() { _ = minioClient.RemoveBucket(ctx, storageBucketName) })
// Create bucket user.
_, err = d.radosgwadminUserAdd(context.TODO(), storageBucketName, -1)
if err != nil {
return fmt.Errorf("Failed creating bucket user: %w", err)
}
revert.Add(func() { _ = d.radosgwadminUserDelete(context.TODO(), storageBucketName) })
// Link bucket to user.
err = d.radosgwadminBucketLink(context.TODO(), storageBucketName, storageBucketName)
if err != nil {
return fmt.Errorf("Failed linking bucket to user: %w", err)
}
// Set initial quota if specified.
if bucket.config["size"] != "" && bucket.config["size"] != "0" {
err = d.setBucketQuota(bucket, bucket.config["size"])
if err != nil {
return err
}
}
revert.Success()
return nil
}
// setBucketQuota sets the bucket quota.
func (d *cephobject) setBucketQuota(bucket Volume, quotaSize string) error {
_, bucketName := project.StorageVolumeParts(bucket.name)
storageBucketName := d.radosgwBucketName(bucketName)
sizeBytes, err := units.ParseByteSizeString(quotaSize)
if err != nil {
return fmt.Errorf("Failed parsing bucket quota size: %w", err)
}
err = d.radosgwadminBucketSetQuota(context.TODO(), storageBucketName, storageBucketName, sizeBytes)
if err != nil {
return fmt.Errorf("Failed setting bucket quota: %w", err)
}
return nil
}
// DeleteBucket deletes an existing bucket.
func (d *cephobject) DeleteBucket(bucket Volume, op *operations.Operation) error {
_, bucketName := project.StorageVolumeParts(bucket.name)
storageBucketName := d.radosgwBucketName(bucketName)
err := d.radosgwadminBucketDelete(context.TODO(), storageBucketName)
if err != nil {
return fmt.Errorf("Failed deleting bucket: %w", err)
}
err = d.radosgwadminUserDelete(context.TODO(), storageBucketName)
if err != nil {
return fmt.Errorf("Failed deleting bucket user: %w", err)
}
return nil
}
// UpdateBucket updates an existing bucket.
func (d *cephobject) UpdateBucket(bucket Volume, changedConfig map[string]string) error {
newSize, sizeChanged := changedConfig["size"]
if sizeChanged {
err := d.setBucketQuota(bucket, newSize)
if err != nil {
return err
}
}
return nil
}
// bucketKeyRadosgwAccessRole returns the radosgw access setting for the specified role name.
func (d *cephobject) bucketKeyRadosgwAccessRole(roleName string) (string, error) {
switch roleName {
case "read-only":
return "read", nil
case "admin":
return "full", nil
}
return "", api.StatusErrorf(http.StatusBadRequest, "Invalid bucket key role")
}
// CreateBucket creates a new bucket.
func (d *cephobject) CreateBucketKey(bucket Volume, keyName string, creds S3Credentials, roleName string, op *operations.Operation) (*S3Credentials, error) {
_, bucketName := project.StorageVolumeParts(bucket.name)
storageBucketName := d.radosgwBucketName(bucketName)
accessRole, err := d.bucketKeyRadosgwAccessRole(roleName)
if err != nil {
return nil, err
}
_, bucketSubUsers, err := d.radosgwadminGetUser(context.TODO(), storageBucketName)
if err != nil {
return nil, fmt.Errorf("Failed getting bucket user: %w", err)
}
_, subUserExists := bucketSubUsers[keyName]
if subUserExists {
return nil, api.StatusErrorf(http.StatusConflict, "A bucket key for that name already exists")
}
// Create a sub user for the key on the bucket user.
newCreds, err := d.radosgwadminSubUserAdd(context.TODO(), storageBucketName, keyName, accessRole, creds.AccessKey, creds.SecretKey)
if err != nil {
return nil, fmt.Errorf("Failed creating bucket user: %w", err)
}
return newCreds, nil
}
// UpdateBucketKey updates bucket key.
func (d *cephobject) UpdateBucketKey(bucket Volume, keyName string, creds S3Credentials, roleName string, op *operations.Operation) (*S3Credentials, error) {
_, bucketName := project.StorageVolumeParts(bucket.name)
storageBucketName := d.radosgwBucketName(bucketName)
accessRole, err := d.bucketKeyRadosgwAccessRole(roleName)
if err != nil {
return nil, err
}
_, bucketSubUsers, err := d.radosgwadminGetUser(context.TODO(), storageBucketName)
if err != nil {
return nil, fmt.Errorf("Failed getting bucket user: %w", err)
}
_, subUserExists := bucketSubUsers[keyName]
if !subUserExists {
return nil, api.StatusErrorf(http.StatusConflict, "A bucket key for that name does not exist")
}
// We delete and recreate the subuser otherwise if the creds.AccessKey has changed a new access key/secret
// will be created, leaving the old one behind still active.
err = d.radosgwadminSubUserDelete(context.TODO(), storageBucketName, keyName)
if err != nil {
return nil, fmt.Errorf("Failed deleting bucket key: %w", err)
}
// Create a sub user for the key on the bucket user.
newCreds, err := d.radosgwadminSubUserAdd(context.TODO(), storageBucketName, keyName, accessRole, creds.AccessKey, creds.SecretKey)
if err != nil {
return nil, fmt.Errorf("Failed creating bucket user: %w", err)
}
return newCreds, err
}
// DeleteBucketKey deletes an existing bucket key.
func (d *cephobject) DeleteBucketKey(bucket Volume, keyName string, op *operations.Operation) error {
_, bucketName := project.StorageVolumeParts(bucket.name)
storageBucketName := d.radosgwBucketName(bucketName)
err := d.radosgwadminSubUserDelete(context.TODO(), storageBucketName, keyName)
if err != nil {
return fmt.Errorf("Failed deleting bucket key: %w", err)
}
return nil
}
// GetBucketURL returns the URL of the specified bucket.
func (d *cephobject) GetBucketURL(bucketName string) *url.URL {
u, err := url.ParseRequestURI(d.config["cephobject.radosgw.endpoint"])
if err != nil {
return nil
}
u.Path = path.Join(u.Path, url.PathEscape(d.radosgwBucketName(bucketName)))
return u
}