mirror of https://github.com/minio/minio.git
Merge pull request #676 from harshavardhana/pr_out_add_new_metadata_definitions_and_use_them_wip
This commit is contained in:
Harshavardhana
commit
e3d8a9e0f1
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@ -33,6 +33,7 @@ import (
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"encoding/json"
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"github.com/minio/minio/pkg/iodine"
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"github.com/minio/minio/pkg/utils/crypto/sha512"
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"github.com/minio/minio/pkg/utils/split"
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)
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@ -72,6 +73,10 @@ func newBucket(bucketName, aclType, donutName string, nodes map[string]node) (bu
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return b, bucketMetadata, nil
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}
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func (b bucket) getBucketName() string {
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return b.name
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}
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func (b bucket) getObjectName(fileName, diskPath, bucketPath string) (string, error) {
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newObject, err := newObject(fileName, filepath.Join(diskPath, bucketPath))
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if err != nil {
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@ -81,15 +86,14 @@ func (b bucket) getObjectName(fileName, diskPath, bucketPath string) (string, er
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if err != nil {
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return "", iodine.New(err, nil)
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}
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objectName, ok := newObjectMetadata["object"]
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if !ok {
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if newObjectMetadata.Object == "" {
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return "", iodine.New(ObjectCorrupted{Object: newObject.name}, nil)
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}
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b.objects[objectName] = newObject
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return objectName, nil
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b.objects[newObjectMetadata.Object] = newObject
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return newObjectMetadata.Object, nil
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}
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func (b bucket) GetObjectMetadata(objectName string) (map[string]string, error) {
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func (b bucket) GetObjectMetadata(objectName string) (*objectMetadata, error) {
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return b.objects[objectName].GetObjectMetadata()
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}
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@ -179,26 +183,14 @@ func (b bucket) ReadObject(objectName string) (reader io.ReadCloser, size int64,
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if !ok {
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return nil, 0, iodine.New(ObjectNotFound{Object: objectName}, nil)
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}
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// verify if objectMetadata is readable, before we serve the request
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objectMetadata, err := object.GetObjectMetadata()
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if err != nil {
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return nil, 0, iodine.New(err, nil)
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}
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if objectName == "" || writer == nil || len(objectMetadata) == 0 {
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return nil, 0, iodine.New(InvalidArgument{}, nil)
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}
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size, err = strconv.ParseInt(objectMetadata["size"], 10, 64)
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if err != nil {
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return nil, 0, iodine.New(err, nil)
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}
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// verify if donutObjectMetadata is readable, before we server the request
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donutObjectMetadata, err := object.GetDonutObjectMetadata()
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donutObjMetadata, err := object.GetDonutObjectMetadata()
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if err != nil {
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return nil, 0, iodine.New(err, nil)
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}
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// read and reply back to GetObject() request in a go-routine
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go b.readEncodedData(b.normalizeObjectName(objectName), writer, donutObjectMetadata)
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return reader, size, nil
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go b.readEncodedData(b.normalizeObjectName(objectName), writer, donutObjMetadata)
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return reader, donutObjMetadata.Size, nil
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}
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// WriteObject - write a new object into bucket
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@ -212,11 +204,13 @@ func (b bucket) WriteObject(objectName string, objectData io.Reader, expectedMD5
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if err != nil {
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return "", iodine.New(err, nil)
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}
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summer := md5.New()
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objectMetadata := make(map[string]string)
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donutObjectMetadata := make(map[string]string)
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objectMetadata["version"] = objectMetadataVersion
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donutObjectMetadata["version"] = donutObjectMetadataVersion
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sumMD5 := md5.New()
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sum512 := sha512.New()
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objectMetadata := new(objectMetadata)
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donutObjectMetadata := new(donutObjectMetadata)
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objectMetadata.Version = objectMetadataVersion
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donutObjectMetadata.Version = donutObjectMetadataVersion
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size := metadata["contentLength"]
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sizeInt, err := strconv.ParseInt(size, 10, 64)
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if err != nil {
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@ -226,13 +220,13 @@ func (b bucket) WriteObject(objectName string, objectData io.Reader, expectedMD5
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// if total writers are only '1' do not compute erasure
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switch len(writers) == 1 {
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case true:
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mw := io.MultiWriter(writers[0], summer)
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mw := io.MultiWriter(writers[0], sumMD5, sum512)
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totalLength, err := io.CopyN(mw, objectData, sizeInt)
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if err != nil {
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return "", iodine.New(err, nil)
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}
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donutObjectMetadata["sys.size"] = strconv.FormatInt(totalLength, 10)
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objectMetadata["size"] = strconv.FormatInt(totalLength, 10)
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donutObjectMetadata.Size = totalLength
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objectMetadata.Size = totalLength
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case false:
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// calculate data and parity dictated by total number of writers
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k, m, err := b.getDataAndParity(len(writers))
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@ -240,37 +234,39 @@ func (b bucket) WriteObject(objectName string, objectData io.Reader, expectedMD5
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return "", iodine.New(err, nil)
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}
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// encoded data with k, m and write
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chunkCount, totalLength, err := b.writeEncodedData(k, m, writers, objectData, summer)
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chunkCount, totalLength, err := b.writeEncodedData(k, m, writers, objectData, sumMD5, sum512)
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if err != nil {
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return "", iodine.New(err, nil)
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}
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/// donutMetadata section
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donutObjectMetadata["sys.blockSize"] = strconv.Itoa(10 * 1024 * 1024)
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donutObjectMetadata["sys.chunkCount"] = strconv.Itoa(chunkCount)
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donutObjectMetadata["sys.erasureK"] = strconv.FormatUint(uint64(k), 10)
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donutObjectMetadata["sys.erasureM"] = strconv.FormatUint(uint64(m), 10)
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donutObjectMetadata["sys.erasureTechnique"] = "Cauchy"
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donutObjectMetadata["sys.size"] = strconv.Itoa(totalLength)
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donutObjectMetadata.BlockSize = 10 * 1024 * 1024
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donutObjectMetadata.ChunkCount = chunkCount
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donutObjectMetadata.DataDisks = k
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donutObjectMetadata.ParityDisks = m
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donutObjectMetadata.ErasureTechnique = "Cauchy"
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donutObjectMetadata.Size = int64(totalLength)
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// keep size inside objectMetadata as well for Object API requests
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objectMetadata["size"] = strconv.Itoa(totalLength)
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objectMetadata.Size = int64(totalLength)
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}
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objectMetadata["bucket"] = b.name
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objectMetadata["object"] = objectName
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// store all user provided metadata
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for k, v := range metadata {
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objectMetadata[k] = v
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}
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dataMd5sum := summer.Sum(nil)
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objectMetadata["created"] = time.Now().UTC().Format(time.RFC3339Nano)
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objectMetadata.Bucket = b.getBucketName()
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objectMetadata.Object = objectName
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objectMetadata.Metadata = metadata
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dataMD5sum := sumMD5.Sum(nil)
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dataSHA512sum := sum512.Sum(nil)
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objectMetadata.Created = time.Now().UTC()
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// keeping md5sum for the object in two different places
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// one for object storage and another is for internal use
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objectMetadata["md5"] = hex.EncodeToString(dataMd5sum)
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donutObjectMetadata["sys.md5"] = hex.EncodeToString(dataMd5sum)
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hexMD5Sum := hex.EncodeToString(dataMD5sum)
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hex512Sum := hex.EncodeToString(dataSHA512sum)
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objectMetadata.MD5Sum = hexMD5Sum
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objectMetadata.SHA512Sum = hex512Sum
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donutObjectMetadata.MD5Sum = hexMD5Sum
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donutObjectMetadata.SHA512Sum = hex512Sum
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// Verify if the written object is equal to what is expected, only if it is requested as such
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if strings.TrimSpace(expectedMD5Sum) != "" {
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if err := b.isMD5SumEqual(strings.TrimSpace(expectedMD5Sum), objectMetadata["md5"]); err != nil {
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if err := b.isMD5SumEqual(strings.TrimSpace(expectedMD5Sum), objectMetadata.MD5Sum); err != nil {
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return "", iodine.New(err, nil)
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}
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}
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@ -286,7 +282,7 @@ func (b bucket) WriteObject(objectName string, objectData io.Reader, expectedMD5
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for _, writer := range writers {
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writer.Close()
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}
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return objectMetadata["md5"], nil
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return objectMetadata.MD5Sum, nil
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}
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// isMD5SumEqual - returns error if md5sum mismatches, other its `nil`
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@ -309,8 +305,8 @@ func (b bucket) isMD5SumEqual(expectedMD5Sum, actualMD5Sum string) error {
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}
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// writeObjectMetadata - write additional object metadata
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func (b bucket) writeObjectMetadata(objectName string, objectMetadata map[string]string) error {
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if len(objectMetadata) == 0 {
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func (b bucket) writeObjectMetadata(objectName string, objectMetadata *objectMetadata) error {
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if objectMetadata == nil {
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return iodine.New(InvalidArgument{}, nil)
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}
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objectMetadataWriters, err := b.getDiskWriters(objectName, objectMetadataConfig)
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@ -330,20 +326,20 @@ func (b bucket) writeObjectMetadata(objectName string, objectMetadata map[string
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}
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// writeDonutObjectMetadata - write donut related object metadata
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func (b bucket) writeDonutObjectMetadata(objectName string, objectMetadata map[string]string) error {
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if len(objectMetadata) == 0 {
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func (b bucket) writeDonutObjectMetadata(objectName string, donutObjectMetadata *donutObjectMetadata) error {
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if donutObjectMetadata == nil {
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return iodine.New(InvalidArgument{}, nil)
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}
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objectMetadataWriters, err := b.getDiskWriters(objectName, donutObjectMetadataConfig)
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donutObjectMetadataWriters, err := b.getDiskWriters(objectName, donutObjectMetadataConfig)
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if err != nil {
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return iodine.New(err, nil)
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}
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for _, objectMetadataWriter := range objectMetadataWriters {
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defer objectMetadataWriter.Close()
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for _, donutObjectMetadataWriter := range donutObjectMetadataWriters {
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defer donutObjectMetadataWriter.Close()
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}
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for _, objectMetadataWriter := range objectMetadataWriters {
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jenc := json.NewEncoder(objectMetadataWriter)
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if err := jenc.Encode(objectMetadata); err != nil {
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for _, donutObjectMetadataWriter := range donutObjectMetadataWriters {
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jenc := json.NewEncoder(donutObjectMetadataWriter)
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if err := jenc.Encode(donutObjectMetadata); err != nil {
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return iodine.New(err, nil)
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}
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}
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@ -380,7 +376,7 @@ func (b bucket) getDataAndParity(totalWriters int) (k uint8, m uint8, err error)
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}
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// writeEncodedData -
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func (b bucket) writeEncodedData(k, m uint8, writers []io.WriteCloser, objectData io.Reader, summer hash.Hash) (int, int, error) {
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func (b bucket) writeEncodedData(k, m uint8, writers []io.WriteCloser, objectData io.Reader, sumMD5, sum512 hash.Hash) (int, int, error) {
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chunks := split.Stream(objectData, 10*1024*1024)
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encoder, err := newEncoder(k, m, "Cauchy")
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if err != nil {
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@ -392,7 +388,8 @@ func (b bucket) writeEncodedData(k, m uint8, writers []io.WriteCloser, objectDat
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if chunk.Err == nil {
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totalLength = totalLength + len(chunk.Data)
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encodedBlocks, _ := encoder.Encode(chunk.Data)
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summer.Write(chunk.Data)
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sumMD5.Write(chunk.Data)
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sum512.Write(chunk.Data)
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for blockIndex, block := range encodedBlocks {
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_, err := io.Copy(writers[blockIndex], bytes.NewBuffer(block))
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if err != nil {
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@ -406,8 +403,8 @@ func (b bucket) writeEncodedData(k, m uint8, writers []io.WriteCloser, objectDat
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}
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// readEncodedData -
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func (b bucket) readEncodedData(objectName string, writer *io.PipeWriter, donutObjectMetadata map[string]string) {
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expectedMd5sum, err := hex.DecodeString(donutObjectMetadata["sys.md5"])
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func (b bucket) readEncodedData(objectName string, writer *io.PipeWriter, donutObjMetadata *donutObjectMetadata) {
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expectedMd5sum, err := hex.DecodeString(donutObjMetadata.MD5Sum)
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if err != nil {
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writer.CloseWithError(iodine.New(err, nil))
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return
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@ -424,23 +421,18 @@ func (b bucket) readEncodedData(objectName string, writer *io.PipeWriter, donutO
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mwriter := io.MultiWriter(writer, hasher)
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switch len(readers) == 1 {
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case false:
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totalChunks, totalLeft, blockSize, k, m, err := b.donutMetadata2Values(donutObjectMetadata)
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if err != nil {
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writer.CloseWithError(iodine.New(err, nil))
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return
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}
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technique, ok := donutObjectMetadata["sys.erasureTechnique"]
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if !ok {
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if donutObjMetadata.ErasureTechnique == "" {
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writer.CloseWithError(iodine.New(MissingErasureTechnique{}, nil))
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return
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}
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encoder, err := newEncoder(uint8(k), uint8(m), technique)
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encoder, err := newEncoder(donutObjMetadata.DataDisks, donutObjMetadata.ParityDisks, donutObjMetadata.ErasureTechnique)
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if err != nil {
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writer.CloseWithError(iodine.New(err, nil))
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return
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}
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for i := 0; i < totalChunks; i++ {
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decodedData, err := b.decodeEncodedData(totalLeft, blockSize, readers, encoder, writer)
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totalLeft := donutObjMetadata.Size
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for i := 0; i < donutObjMetadata.ChunkCount; i++ {
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decodedData, err := b.decodeEncodedData(totalLeft, int64(donutObjMetadata.BlockSize), readers, encoder, writer)
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if err != nil {
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writer.CloseWithError(iodine.New(err, nil))
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return
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@ -450,7 +442,7 @@ func (b bucket) readEncodedData(objectName string, writer *io.PipeWriter, donutO
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writer.CloseWithError(iodine.New(err, nil))
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return
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}
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totalLeft = totalLeft - int64(blockSize)
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totalLeft = totalLeft - int64(donutObjMetadata.BlockSize)
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}
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case true:
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_, err := io.Copy(writer, readers[0])
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@ -496,31 +488,6 @@ func (b bucket) decodeEncodedData(totalLeft, blockSize int64, readers []io.ReadC
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return decodedData, nil
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}
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// donutMetadata2Values -
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func (b bucket) donutMetadata2Values(donutObjectMetadata map[string]string) (totalChunks int, totalLeft, blockSize int64, k, m uint64, err error) {
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totalChunks, err = strconv.Atoi(donutObjectMetadata["sys.chunkCount"])
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if err != nil {
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return 0, 0, 0, 0, 0, iodine.New(err, nil)
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}
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totalLeft, err = strconv.ParseInt(donutObjectMetadata["sys.size"], 10, 64)
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if err != nil {
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return 0, 0, 0, 0, 0, iodine.New(err, nil)
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}
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blockSize, err = strconv.ParseInt(donutObjectMetadata["sys.blockSize"], 10, 64)
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if err != nil {
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return 0, 0, 0, 0, 0, iodine.New(err, nil)
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}
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k, err = strconv.ParseUint(donutObjectMetadata["sys.erasureK"], 10, 8)
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if err != nil {
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return 0, 0, 0, 0, 0, iodine.New(err, nil)
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}
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m, err = strconv.ParseUint(donutObjectMetadata["sys.erasureM"], 10, 8)
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if err != nil {
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return 0, 0, 0, 0, 0, iodine.New(err, nil)
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}
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return totalChunks, totalLeft, blockSize, k, m, nil
|
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}
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// getDiskReaders -
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func (b bucket) getDiskReaders(objectName, objectMeta string) ([]io.ReadCloser, error) {
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var readers []io.ReadCloser
|
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|
|
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|
@ -0,0 +1,70 @@
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/*
|
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* Minimalist Object Storage, (C) 2015 Minio, Inc.
|
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*
|
||||
* 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.
|
||||
*/
|
||||
|
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package donut
|
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|
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import "time"
|
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|
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// objectMetadata object specific metadata per object
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type objectMetadata struct {
|
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// version
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Version string `json:"version"`
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|
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// object metadata
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Size int64 `json:"size"`
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Created time.Time `json:"created"`
|
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Bucket string `json:"bucket"`
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Object string `json:"object"`
|
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|
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// checksums
|
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MD5Sum string `json:"md5sum"`
|
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SHA512Sum string `json:"sha512sum"`
|
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|
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// additional metadata
|
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Metadata map[string]string `json:"metadata"`
|
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}
|
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|
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// donutObjectMetadata container for donut specific internal metadata per object
|
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type donutObjectMetadata struct {
|
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// version
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Version string `json:"version"`
|
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|
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// erasure
|
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DataDisks uint8 `json:"sys.erasureK"`
|
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ParityDisks uint8 `json:"sys.erasureM"`
|
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ErasureTechnique string `json:"sys.erasureTechnique"`
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|
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// object metadata
|
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Size int64 `json:"sys.size"`
|
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BlockSize int `json:"sys.blockSize"`
|
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ChunkCount int `json:"sys.chunkCount"`
|
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|
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// checksums
|
||||
MD5Sum string `json:"sys.md5sum"`
|
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SHA512Sum string `json:"sys.sha512sum"`
|
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}
|
||||
|
||||
// donutMetadata container for donut level metadata
|
||||
type donutMetadata struct {
|
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Version string `json:"version"`
|
||||
}
|
||||
|
||||
// bucketMetadata container for bucket level metadata
|
||||
type bucketMetadata struct {
|
||||
Version string `json:"version"`
|
||||
ACL string `json:"acl"`
|
||||
Metadata map[string]string `json:"metadata"`
|
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}
|
||||
|
|
@ -25,6 +25,7 @@ import (
|
|||
"strconv"
|
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"strings"
|
||||
"sync"
|
||||
"time"
|
||||
|
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"github.com/minio/minio/pkg/iodine"
|
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)
|
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|
|
@ -256,7 +257,19 @@ func (dt donut) GetObjectMetadata(bucket, object string) (map[string]string, err
|
|||
}
|
||||
for _, objectName := range objectList {
|
||||
if objectName == object {
|
||||
return dt.buckets[bucket].GetObjectMetadata(object)
|
||||
objectMetadataMap := make(map[string]string)
|
||||
objectMetadata, err := dt.buckets[bucket].GetObjectMetadata(object)
|
||||
if err != nil {
|
||||
return nil, iodine.New(err, nil)
|
||||
}
|
||||
objectMetadataMap["created"] = objectMetadata.Created.Format(time.RFC3339Nano)
|
||||
objectMetadataMap["size"] = strconv.FormatInt(objectMetadata.Size, 10)
|
||||
objectMetadataMap["md5"] = objectMetadata.MD5Sum
|
||||
objectMetadataMap["version"] = objectMetadata.Version
|
||||
for k, v := range objectMetadata.Metadata {
|
||||
objectMetadataMap[k] = v
|
||||
}
|
||||
return objectMetadataMap, nil
|
||||
}
|
||||
}
|
||||
return nil, iodine.New(ObjectNotFound{Object: object}, errParams)
|
||||
|
|
|
|||
|
|
@ -28,8 +28,6 @@ import (
|
|||
type object struct {
|
||||
name string
|
||||
objectPath string
|
||||
objectMetadata map[string]string
|
||||
donutObjectMetadata map[string]string
|
||||
}
|
||||
|
||||
// newObject - instantiate a new object
|
||||
|
|
@ -43,28 +41,26 @@ func newObject(objectName, p string) (object, error) {
|
|||
return o, nil
|
||||
}
|
||||
|
||||
func (o object) GetObjectMetadata() (map[string]string, error) {
|
||||
objectMetadata := make(map[string]string)
|
||||
func (o object) GetObjectMetadata() (*objectMetadata, error) {
|
||||
objectMetadata := new(objectMetadata)
|
||||
objectMetadataBytes, err := ioutil.ReadFile(filepath.Join(o.objectPath, objectMetadataConfig))
|
||||
if err != nil {
|
||||
return nil, iodine.New(ObjectNotFound{Object: o.name}, nil)
|
||||
}
|
||||
if err := json.Unmarshal(objectMetadataBytes, &objectMetadata); err != nil {
|
||||
if err := json.Unmarshal(objectMetadataBytes, objectMetadata); err != nil {
|
||||
return nil, iodine.New(err, nil)
|
||||
}
|
||||
o.objectMetadata = objectMetadata
|
||||
return o.objectMetadata, nil
|
||||
return objectMetadata, nil
|
||||
}
|
||||
|
||||
func (o object) GetDonutObjectMetadata() (map[string]string, error) {
|
||||
donutObjectMetadata := make(map[string]string)
|
||||
func (o object) GetDonutObjectMetadata() (*donutObjectMetadata, error) {
|
||||
donutObjectMetadata := new(donutObjectMetadata)
|
||||
donutObjectMetadataBytes, err := ioutil.ReadFile(filepath.Join(o.objectPath, donutObjectMetadataConfig))
|
||||
if err != nil {
|
||||
return nil, iodine.New(ObjectNotFound{Object: o.name}, nil)
|
||||
}
|
||||
if err := json.Unmarshal(donutObjectMetadataBytes, &donutObjectMetadata); err != nil {
|
||||
if err := json.Unmarshal(donutObjectMetadataBytes, donutObjectMetadata); err != nil {
|
||||
return nil, iodine.New(err, nil)
|
||||
}
|
||||
o.donutObjectMetadata = donutObjectMetadata
|
||||
return o.donutObjectMetadata, nil
|
||||
return donutObjectMetadata, nil
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue