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Copy pathbucket-quota.go
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228 lines (196 loc) · 5.9 KB
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// 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 (
"context"
"encoding/json"
"fmt"
"time"
"github.com/minio/madmin-go"
"github.com/minio/minio/internal/event"
"github.com/minio/minio/internal/logger"
)
// BucketQuotaSys - map of bucket and quota configuration.
type BucketQuotaSys struct {
bucketStorageCache timedValue
}
// Get - Get quota configuration.
func (sys *BucketQuotaSys) Get(bucketName string) (*madmin.BucketQuota, error) {
if globalIsGateway {
objAPI := newObjectLayerFn()
if objAPI == nil {
return nil, errServerNotInitialized
}
return &madmin.BucketQuota{}, nil
}
return globalBucketMetadataSys.GetQuotaConfig(bucketName)
}
// NewBucketQuotaSys returns initialized BucketQuotaSys
func NewBucketQuotaSys() *BucketQuotaSys {
return &BucketQuotaSys{}
}
// parseBucketQuota parses BucketQuota from json
func parseBucketQuota(bucket string, data []byte) (quotaCfg *madmin.BucketQuota, err error) {
quotaCfg = &madmin.BucketQuota{}
if err = json.Unmarshal(data, quotaCfg); err != nil {
return quotaCfg, err
}
if !quotaCfg.IsValid() {
return quotaCfg, fmt.Errorf("Invalid quota config %#v", quotaCfg)
}
return
}
func (sys *BucketQuotaSys) check(ctx context.Context, bucket string, size int64) error {
objAPI := newObjectLayerFn()
if objAPI == nil {
return errServerNotInitialized
}
sys.bucketStorageCache.Once.Do(func() {
sys.bucketStorageCache.TTL = 1 * time.Second
sys.bucketStorageCache.Update = func() (interface{}, error) {
ctx, done := context.WithTimeout(context.Background(), 5*time.Second)
defer done()
return loadDataUsageFromBackend(ctx, objAPI)
}
})
q, err := sys.Get(bucket)
if err != nil {
return err
}
if q != nil && q.Type == madmin.HardQuota && q.Quota > 0 {
v, err := sys.bucketStorageCache.Get()
if err != nil {
return err
}
dui, ok := v.(DataUsageInfo)
if !ok {
return fmt.Errorf("internal error: Unexpected DUI data type: %T", v)
}
bui, ok := dui.BucketsUsage[bucket]
if !ok {
// bucket not found, cannot enforce quota
// call will fail anyways later.
return nil
}
if (bui.Size + uint64(size)) >= q.Quota {
return BucketQuotaExceeded{Bucket: bucket}
}
}
return nil
}
func enforceBucketQuota(ctx context.Context, bucket string, size int64) error {
if size < 0 {
return nil
}
return globalBucketQuotaSys.check(ctx, bucket, size)
}
// enforceFIFOQuota deletes objects in FIFO order until sufficient objects
// have been deleted so as to bring bucket usage within quota.
func enforceFIFOQuotaBucket(ctx context.Context, objectAPI ObjectLayer, bucket string, bui BucketUsageInfo) {
// Check if the current bucket has quota restrictions, if not skip it
cfg, err := globalBucketQuotaSys.Get(bucket)
if err != nil {
return
}
if cfg.Type != madmin.FIFOQuota {
return
}
var toFree uint64
if bui.Size > cfg.Quota && cfg.Quota > 0 {
toFree = bui.Size - cfg.Quota
}
if toFree <= 0 {
return
}
// Allocate new results channel to receive ObjectInfo.
objInfoCh := make(chan ObjectInfo)
versioned := globalBucketVersioningSys.Enabled(bucket)
// Walk through all objects
if err := objectAPI.Walk(ctx, bucket, "", objInfoCh, ObjectOptions{WalkVersions: versioned}); err != nil {
logger.LogIf(ctx, err)
return
}
// reuse the fileScorer used by disk cache to score entries by
// ModTime to find the oldest objects in bucket to delete. In
// the context of bucket quota enforcement - number of hits are
// irrelevant.
scorer, err := newFileScorer(toFree, time.Now().Unix(), 1)
if err != nil {
logger.LogIf(ctx, err)
return
}
rcfg, _ := globalBucketObjectLockSys.Get(bucket)
for obj := range objInfoCh {
if obj.DeleteMarker {
// Delete markers are automatically added for FIFO purge.
scorer.addFileWithObjInfo(obj, 1)
continue
}
// skip objects currently under retention
if rcfg.LockEnabled && enforceRetentionForDeletion(ctx, obj) {
continue
}
scorer.addFileWithObjInfo(obj, 1)
}
// If we saw less than quota we are good.
if scorer.seenBytes <= cfg.Quota {
return
}
// Calculate how much we want to delete now.
toFreeNow := scorer.seenBytes - cfg.Quota
// We were less over quota than we thought. Adjust so we delete less.
// If we are more over, leave it for the next run to pick up.
if toFreeNow < toFree {
if !scorer.adjustSaveBytes(int64(toFreeNow) - int64(toFree)) {
// We got below or at quota.
return
}
}
var objects []ObjectToDelete
numKeys := len(scorer.fileObjInfos())
for i, obj := range scorer.fileObjInfos() {
objects = append(objects, ObjectToDelete{
ObjectName: obj.Name,
VersionID: obj.VersionID,
})
if len(objects) < maxDeleteList && (i < numKeys-1) {
// skip deletion until maxDeleteList or end of slice
continue
}
if len(objects) == 0 {
break
}
// Deletes a list of objects.
_, deleteErrs := objectAPI.DeleteObjects(ctx, bucket, objects, ObjectOptions{
Versioned: versioned,
})
for i := range deleteErrs {
if deleteErrs[i] != nil {
logger.LogIf(ctx, deleteErrs[i])
continue
}
// Notify object deleted event.
sendEvent(eventArgs{
EventName: event.ObjectRemovedDelete,
BucketName: bucket,
Object: obj,
Host: "Internal: [FIFO-QUOTA-EXPIRY]",
})
}
objects = nil
}
}