b87fae0049
This change moves away from a unified constructor for plaintext and encrypted usage. NewPutObjReader is simplified for the plain-text reader use. For encrypted reader use, WithEncryption should be called on an initialized PutObjReader. Plaintext: func NewPutObjReader(rawReader *hash.Reader) *PutObjReader The hash.Reader is used to provide payload size and md5sum to the downstream consumers. This is different from the previous version in that there is no need to pass nil values for unused parameters. Encrypted: func WithEncryption(encReader *hash.Reader, key *crypto.ObjectKey) (*PutObjReader, error) This method sets up encrypted reader along with the key to seal the md5sum produced by the plain-text reader (already setup when NewPutObjReader was called). Usage: ``` pReader := NewPutObjReader(rawReader) // ... other object handler code goes here // Prepare the encrypted hashed reader pReader, err = pReader.WithEncryption(encReader, objEncKey) ```
96 lines
3 KiB
Go
96 lines
3 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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"net/http"
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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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envDataUsageCrawlDebug = "MINIO_DISK_USAGE_CRAWL_DEBUG"
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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 DataUsageInfo) {
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for dataUsageInfo := range dui {
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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, false)
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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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func loadDataUsageFromBackend(ctx context.Context, objAPI ObjectLayer) (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 DataUsageInfo{}, nil
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}
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return DataUsageInfo{}, toObjectErr(err, dataUsageBucket, dataUsageObjName)
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}
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defer r.Close()
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var dataUsageInfo 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 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]BucketUsageInfo, len(dataUsageInfo.BucketSizes))
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for bucket, size := range dataUsageInfo.BucketSizes {
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dataUsageInfo.BucketsUsage[bucket] = 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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