mirror of https://github.com/minio/minio.git
131 lines
4.2 KiB
Go
131 lines
4.2 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"bytes"
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"context"
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"net/http"
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"strings"
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jsoniter "github.com/json-iterator/go"
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"github.com/minio/madmin-go"
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"github.com/minio/minio/internal/hash"
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"github.com/minio/minio/internal/logger"
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)
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const (
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dataUsageRoot = SlashSeparator
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dataUsageBucket = minioMetaBucket + SlashSeparator + bucketMetaPrefix
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dataUsageObjName = ".usage.json"
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dataUsageCacheName = ".usage-cache.bin"
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dataUsageBloomName = ".bloomcycle.bin"
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)
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// storeDataUsageInBackend will store all objects sent on the gui channel until closed.
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func storeDataUsageInBackend(ctx context.Context, objAPI ObjectLayer, dui <-chan madmin.DataUsageInfo) {
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for dataUsageInfo := range dui {
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var json = jsoniter.ConfigCompatibleWithStandardLibrary
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dataUsageJSON, err := json.Marshal(dataUsageInfo)
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if err != nil {
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logger.LogIf(ctx, err)
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continue
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}
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size := int64(len(dataUsageJSON))
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r, err := hash.NewReader(bytes.NewReader(dataUsageJSON), size, "", "", size)
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if err != nil {
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logger.LogIf(ctx, err)
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continue
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}
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_, err = objAPI.PutObject(ctx, dataUsageBucket, dataUsageObjName, NewPutObjReader(r), ObjectOptions{})
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if !isErrBucketNotFound(err) {
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logger.LogIf(ctx, err)
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}
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}
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}
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// loadPrefixUsageFromBackend returns prefix usages found in passed buckets
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// e.g.: /testbucket/prefix => 355601334
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func loadPrefixUsageFromBackend(ctx context.Context, objAPI ObjectLayer, bucket string) (map[string]uint64, error) {
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z, ok := objAPI.(*erasureServerPools)
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if !ok {
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// Prefix usage is empty
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return map[string]uint64{}, nil
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}
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cache := dataUsageCache{}
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m := make(map[string]uint64)
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for _, pool := range z.serverPools {
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for _, er := range pool.sets {
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// Load bucket usage prefixes
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if err := cache.load(ctx, er, bucket+slashSeparator+dataUsageCacheName); err == nil {
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root := cache.find(bucket)
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if root == nil {
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// We dont have usage information for this bucket in this
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// set, go to the next set
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continue
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}
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for id, usageInfo := range cache.flattenChildrens(*root) {
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prefix := strings.TrimPrefix(id, bucket+slashSeparator)
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m[prefix] += uint64(usageInfo.Size)
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}
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}
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}
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}
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return m, nil
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}
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func loadDataUsageFromBackend(ctx context.Context, objAPI ObjectLayer) (madmin.DataUsageInfo, error) {
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r, err := objAPI.GetObjectNInfo(ctx, dataUsageBucket, dataUsageObjName, nil, http.Header{}, readLock, ObjectOptions{})
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if err != nil {
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if isErrObjectNotFound(err) || isErrBucketNotFound(err) {
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return madmin.DataUsageInfo{}, nil
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}
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return madmin.DataUsageInfo{}, toObjectErr(err, dataUsageBucket, dataUsageObjName)
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}
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defer r.Close()
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var dataUsageInfo madmin.DataUsageInfo
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var json = jsoniter.ConfigCompatibleWithStandardLibrary
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if err = json.NewDecoder(r).Decode(&dataUsageInfo); err != nil {
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return madmin.DataUsageInfo{}, err
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}
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// For forward compatibility reasons, we need to add this code.
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if len(dataUsageInfo.BucketsUsage) == 0 {
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dataUsageInfo.BucketsUsage = make(map[string]madmin.BucketUsageInfo, len(dataUsageInfo.BucketSizes))
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for bucket, size := range dataUsageInfo.BucketSizes {
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dataUsageInfo.BucketsUsage[bucket] = madmin.BucketUsageInfo{Size: size}
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}
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}
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// For backward compatibility reasons, we need to add this code.
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if len(dataUsageInfo.BucketSizes) == 0 {
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dataUsageInfo.BucketSizes = make(map[string]uint64, len(dataUsageInfo.BucketsUsage))
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for bucket, bui := range dataUsageInfo.BucketsUsage {
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dataUsageInfo.BucketSizes[bucket] = bui.Size
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}
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}
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return dataUsageInfo, nil
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}
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