mirror of https://github.com/minio/minio.git
145 lines
3.5 KiB
Go
145 lines
3.5 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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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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"encoding/json"
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"time"
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jsoniter "github.com/json-iterator/go"
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"github.com/minio/minio/cmd/logger"
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"github.com/minio/minio/pkg/hash"
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)
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const (
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dataUsageObjName = "data-usage"
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dataUsageCrawlInterval = 12 * time.Hour
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)
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func initDataUsageStats() {
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go runDataUsageInfoUpdateRoutine()
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}
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func runDataUsageInfoUpdateRoutine() {
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// Wait until the object layer is ready
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var objAPI ObjectLayer
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for {
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objAPI = newObjectLayerWithoutSafeModeFn()
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if objAPI == nil {
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time.Sleep(time.Second)
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continue
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}
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break
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}
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ctx := context.Background()
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switch v := objAPI.(type) {
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case *xlZones:
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runDataUsageInfoForXLZones(ctx, v, GlobalServiceDoneCh)
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case *FSObjects:
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runDataUsageInfoForFS(ctx, v, GlobalServiceDoneCh)
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default:
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return
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}
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}
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func runDataUsageInfoForFS(ctx context.Context, fsObj *FSObjects, endCh <-chan struct{}) {
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t := time.NewTicker(dataUsageCrawlInterval)
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defer t.Stop()
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for {
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// Get data usage info of the FS Object
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usageInfo := fsObj.crawlAndGetDataUsageInfo(ctx, endCh)
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// Save the data usage in the disk
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err := storeDataUsageInBackend(ctx, fsObj, usageInfo)
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if err != nil {
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logger.LogIf(ctx, err)
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}
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select {
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case <-endCh:
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return
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// Wait until the next crawl interval
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case <-t.C:
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}
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}
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}
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func runDataUsageInfoForXLZones(ctx context.Context, z *xlZones, endCh <-chan struct{}) {
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locker := z.NewNSLock(ctx, minioMetaBucket, "leader-data-usage-info")
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for {
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err := locker.GetLock(newDynamicTimeout(time.Millisecond, time.Millisecond))
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if err != nil {
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time.Sleep(5 * time.Minute)
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continue
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}
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// Break without locking
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break
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}
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t := time.NewTicker(dataUsageCrawlInterval)
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defer t.Stop()
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for {
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usageInfo := z.crawlAndGetDataUsage(ctx, endCh)
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err := storeDataUsageInBackend(ctx, z, usageInfo)
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if err != nil {
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logger.LogIf(ctx, err)
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}
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select {
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case <-endCh:
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locker.Unlock()
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return
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case <-t.C:
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}
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}
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}
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func storeDataUsageInBackend(ctx context.Context, objAPI ObjectLayer, dataUsageInfo DataUsageInfo) error {
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dataUsageJSON, err := json.Marshal(dataUsageInfo)
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if err != nil {
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return err
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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, false)
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if err != nil {
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return err
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}
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_, err = objAPI.PutObject(ctx, minioMetaBackgroundOpsBucket, dataUsageObjName, NewPutObjReader(r, nil, nil), ObjectOptions{})
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return err
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}
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func loadDataUsageFromBackend(ctx context.Context, objAPI ObjectLayer) (DataUsageInfo, error) {
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var dataUsageInfoJSON bytes.Buffer
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err := objAPI.GetObject(ctx, minioMetaBackgroundOpsBucket, dataUsageObjName, 0, -1, &dataUsageInfoJSON, "", ObjectOptions{})
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if err != nil {
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return DataUsageInfo{}, nil
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}
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var dataUsageInfo DataUsageInfo
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var json = jsoniter.ConfigCompatibleWithStandardLibrary
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err = json.Unmarshal(dataUsageInfoJSON.Bytes(), &dataUsageInfo)
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if err != nil {
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return DataUsageInfo{}, err
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}
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return dataUsageInfo, nil
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}
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