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Copy pathbucket-quota.go
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133 lines (113 loc) · 4.11 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"
"errors"
"fmt"
"time"
"github.com/minio/madmin-go/v3"
"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(ctx context.Context, bucketName string) (*madmin.BucketQuota, error) {
qCfg, _, err := globalBucketMetadataSys.GetQuotaConfig(ctx, bucketName)
return qCfg, err
}
// NewBucketQuotaSys returns initialized BucketQuotaSys
func NewBucketQuotaSys() *BucketQuotaSys {
return &BucketQuotaSys{}
}
// Init initialize bucket quota.
func (sys *BucketQuotaSys) Init(objAPI ObjectLayer) {
sys.bucketStorageCache.Once.Do(func() {
// Set this to 10 secs since its enough, as scanner
// does not update the bucket usage values frequently.
sys.bucketStorageCache.TTL = 10 * time.Second
// Rely on older value if usage loading fails from disk.
sys.bucketStorageCache.Relax = true
sys.bucketStorageCache.Update = func() (interface{}, error) {
ctx, done := context.WithTimeout(context.Background(), 1*time.Second)
defer done()
return loadDataUsageFromBackend(ctx, objAPI)
}
})
}
// GetBucketUsageInfo return bucket usage info for a given bucket
func (sys *BucketQuotaSys) GetBucketUsageInfo(bucket string) (BucketUsageInfo, error) {
v, err := sys.bucketStorageCache.Get()
if err != nil && v != nil {
logger.LogIf(GlobalContext, fmt.Errorf("unable to retrieve usage information for bucket: %s, relying on older value cached in-memory: err(%v)", bucket, err))
}
if v == nil {
logger.LogIf(GlobalContext, errors.New("unable to retrieve usage information for bucket: %s, no reliable usage value available - quota will not be enforced"))
}
var bui BucketUsageInfo
dui, ok := v.(DataUsageInfo)
if ok {
bui = dui.BucketsUsage[bucket]
}
return bui, nil
}
// 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() {
if quotaCfg.Type == "fifo" {
logger.LogIf(GlobalContext, errors.New("Detected older 'fifo' quota config, 'fifo' feature is removed and not supported anymore. Please clear your quota configs using 'mc admin bucket quota alias/bucket --clear' and use 'mc ilm add' for expiration of objects"))
return quotaCfg, fmt.Errorf("invalid quota type 'fifo'")
}
return quotaCfg, fmt.Errorf("Invalid quota config %#v", quotaCfg)
}
return
}
func (sys *BucketQuotaSys) enforceQuotaHard(ctx context.Context, bucket string, size int64) error {
if size < 0 {
return nil
}
q, err := sys.Get(ctx, bucket)
if err != nil {
return err
}
if q != nil && q.Type == madmin.HardQuota && q.Quota > 0 {
if uint64(size) >= q.Quota { // check if file size already exceeds the quota
return BucketQuotaExceeded{Bucket: bucket}
}
bui, err := sys.GetBucketUsageInfo(bucket)
if err != nil {
return err
}
if bui.Size > 0 && ((bui.Size + uint64(size)) >= q.Quota) {
return BucketQuotaExceeded{Bucket: bucket}
}
}
return nil
}
func enforceBucketQuotaHard(ctx context.Context, bucket string, size int64) error {
if globalBucketQuotaSys == nil {
return nil
}
return globalBucketQuotaSys.enforceQuotaHard(ctx, bucket, size)
}