minio/cmd/data-usage.go
Poorna Krishnamoorthy 47c09a1e6f
Various improvements in replication (#11949)
- collect real time replication metrics for prometheus.
- add pending_count, failed_count metric for total pending/failed replication operations.

- add API to get replication metrics

- add MRF worker to handle spill-over replication operations

- multiple issues found with replication
- fixes an issue when client sends a bucket
 name with `/` at the end from SetRemoteTarget
 API call make sure to trim the bucket name to 
 avoid any extra `/`.

- hold write locks in GetObjectNInfo during replication
  to ensure that object version stack is not overwritten
  while reading the content.

- add additional protection during WriteMetadata() to
  ensure that we always write a valid FileInfo{} and avoid
  ever writing empty FileInfo{} to the lowest layers.

Co-authored-by: Poorna Krishnamoorthy <poorna@minio.io>
Co-authored-by: Harshavardhana <harsha@minio.io>
2021-04-03 09:03:42 -07:00

95 lines
3.0 KiB
Go

/*
* 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"
"github.com/minio/minio/pkg/madmin"
)
const (
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 madmin.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) (madmin.DataUsageInfo, error) {
r, err := objAPI.GetObjectNInfo(ctx, dataUsageBucket, dataUsageObjName, nil, http.Header{}, readLock, ObjectOptions{})
if err != nil {
if isErrObjectNotFound(err) || isErrBucketNotFound(err) {
return madmin.DataUsageInfo{}, nil
}
return madmin.DataUsageInfo{}, toObjectErr(err, dataUsageBucket, dataUsageObjName)
}
defer r.Close()
var dataUsageInfo madmin.DataUsageInfo
var json = jsoniter.ConfigCompatibleWithStandardLibrary
if err = json.NewDecoder(r).Decode(&dataUsageInfo); err != nil {
return madmin.DataUsageInfo{}, err
}
// For forward compatibility reasons, we need to add this code.
if len(dataUsageInfo.BucketsUsage) == 0 {
dataUsageInfo.BucketsUsage = make(map[string]madmin.BucketUsageInfo, len(dataUsageInfo.BucketSizes))
for bucket, size := range dataUsageInfo.BucketSizes {
dataUsageInfo.BucketsUsage[bucket] = madmin.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
}