minio/cmd/bucket-versioning.go
Harshavardhana 52221db7ef
fix: for unexpected errors in reading versioning config panic (#14994)
We need to make sure if we cannot read bucket metadata
for some reason, and bucket metadata is not missing and
returning corrupted information we should panic such
handlers to disallow I/O to protect the overall state
on the system.

In-case of such corruption we have a mechanism now
to force recreate the metadata on the bucket, using
`x-minio-force-create` header with `PUT /bucket` API
call.

Additionally fix the versioning config updated state
to be set properly for the site replication healing
to trigger correctly.
2022-05-31 02:57:57 -07:00

89 lines
2.8 KiB
Go

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"strings"
"github.com/minio/minio/internal/bucket/versioning"
"github.com/minio/minio/internal/logger"
)
// BucketVersioningSys - policy subsystem.
type BucketVersioningSys struct{}
// Enabled enabled versioning?
func (sys *BucketVersioningSys) Enabled(bucket string) bool {
vc, err := sys.Get(bucket)
if err != nil {
logger.CriticalIf(GlobalContext, err)
}
return vc.Enabled()
}
// PrefixEnabled returns true is versioning is enabled at bucket level and if
// the given prefix doesn't match any excluded prefixes pattern. This is
// part of a MinIO versioning configuration extension.
func (sys *BucketVersioningSys) PrefixEnabled(bucket, prefix string) bool {
vc, err := sys.Get(bucket)
if err != nil {
logger.CriticalIf(GlobalContext, err)
}
return vc.PrefixEnabled(prefix)
}
// Suspended suspended versioning?
func (sys *BucketVersioningSys) Suspended(bucket string) bool {
vc, err := sys.Get(bucket)
if err != nil {
logger.CriticalIf(GlobalContext, err)
}
return vc.Suspended()
}
// PrefixSuspended returns true if the given prefix matches an excluded prefix
// pattern. This is part of a MinIO versioning configuration extension.
func (sys *BucketVersioningSys) PrefixSuspended(bucket, prefix string) bool {
vc, err := sys.Get(bucket)
if err != nil {
logger.CriticalIf(GlobalContext, err)
}
return vc.PrefixSuspended(prefix)
}
// Get returns stored bucket policy
func (sys *BucketVersioningSys) Get(bucket string) (*versioning.Versioning, error) {
if globalIsGateway {
// Gateway does not implement versioning.
return &versioning.Versioning{XMLNS: "http://s3.amazonaws.com/doc/2006-03-01/"}, nil
}
if bucket == minioMetaBucket || strings.HasPrefix(bucket, minioMetaBucket) {
return &versioning.Versioning{XMLNS: "http://s3.amazonaws.com/doc/2006-03-01/"}, nil
}
vcfg, _, err := globalBucketMetadataSys.GetVersioningConfig(bucket)
return vcfg, err
}
// NewBucketVersioningSys - creates new versioning system.
func NewBucketVersioningSys() *BucketVersioningSys {
return &BucketVersioningSys{}
}