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Copy pathdata-usage.go
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95 lines (83 loc) · 2.99 KB
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/*
* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cmd
import (
"bytes"
"context"
"encoding/json"
"net/http"
jsoniter "github.com/json-iterator/go"
"github.com/minio/minio/cmd/logger"
"github.com/minio/minio/pkg/hash"
)
const (
envDataUsageScannerDebug = "MINIO_DISK_USAGE_SCANNER_DEBUG"
dataUsageRoot = SlashSeparator
dataUsageBucket = minioMetaBucket + SlashSeparator + bucketMetaPrefix
dataUsageObjName = ".usage.json"
dataUsageCacheName = ".usage-cache.bin"
dataUsageBloomName = ".bloomcycle.bin"
)
// storeDataUsageInBackend will store all objects sent on the gui channel until closed.
func storeDataUsageInBackend(ctx context.Context, objAPI ObjectLayer, dui <-chan DataUsageInfo) {
for dataUsageInfo := range dui {
dataUsageJSON, err := json.Marshal(dataUsageInfo)
if err != nil {
logger.LogIf(ctx, err)
continue
}
size := int64(len(dataUsageJSON))
r, err := hash.NewReader(bytes.NewReader(dataUsageJSON), size, "", "", size)
if err != nil {
logger.LogIf(ctx, err)
continue
}
_, err = objAPI.PutObject(ctx, dataUsageBucket, dataUsageObjName, NewPutObjReader(r), ObjectOptions{})
if !isErrBucketNotFound(err) {
logger.LogIf(ctx, err)
}
}
}
func loadDataUsageFromBackend(ctx context.Context, objAPI ObjectLayer) (DataUsageInfo, error) {
r, err := objAPI.GetObjectNInfo(ctx, dataUsageBucket, dataUsageObjName, nil, http.Header{}, readLock, ObjectOptions{})
if err != nil {
if isErrObjectNotFound(err) || isErrBucketNotFound(err) {
return DataUsageInfo{}, nil
}
return DataUsageInfo{}, toObjectErr(err, dataUsageBucket, dataUsageObjName)
}
defer r.Close()
var dataUsageInfo DataUsageInfo
var json = jsoniter.ConfigCompatibleWithStandardLibrary
if err = json.NewDecoder(r).Decode(&dataUsageInfo); err != nil {
return DataUsageInfo{}, err
}
// For forward compatibility reasons, we need to add this code.
if len(dataUsageInfo.BucketsUsage) == 0 {
dataUsageInfo.BucketsUsage = make(map[string]BucketUsageInfo, len(dataUsageInfo.BucketSizes))
for bucket, size := range dataUsageInfo.BucketSizes {
dataUsageInfo.BucketsUsage[bucket] = BucketUsageInfo{Size: size}
}
}
// For backward compatibility reasons, we need to add this code.
if len(dataUsageInfo.BucketSizes) == 0 {
dataUsageInfo.BucketSizes = make(map[string]uint64, len(dataUsageInfo.BucketsUsage))
for bucket, bui := range dataUsageInfo.BucketsUsage {
dataUsageInfo.BucketSizes[bucket] = bui.Size
}
}
return dataUsageInfo, nil
}