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Donut moves to typed metadata, removing the necessity for strconv, parsing and string converstions

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This commit is contained in:
Harshavardhana 2015-06-26 15:32:24 -07:00
parent e3d8a9e0f1
commit 68974918ac
7 changed files with 153 additions and 182 deletions
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130
pkg/storage/donut/bucket.go
View File

@ -49,20 +49,18 @@ type bucket struct {
}
// newBucket - instantiate a new bucket
func newBucket(bucketName, aclType, donutName string, nodes map[string]node) (bucket, map[string]string, error) {
func newBucket(bucketName, aclType, donutName string, nodes map[string]node) (bucket, BucketMetadata, error) {
errParams := map[string]string{
"bucketName": bucketName,
"donutName": donutName,
"aclType": aclType,
}
if strings.TrimSpace(bucketName) == "" || strings.TrimSpace(donutName) == "" {
return bucket{}, nil, iodine.New(InvalidArgument{}, errParams)
return bucket{}, BucketMetadata{}, iodine.New(InvalidArgument{}, errParams)
}
bucketMetadata := make(map[string]string)
bucketMetadata["acl"] = aclType
t := time.Now().UTC()
bucketMetadata["created"] = t.Format(time.RFC3339Nano)
b := bucket{}
t := time.Now().UTC()
b.name = bucketName
b.acl = aclType
b.time = t
@ -70,7 +68,13 @@ func newBucket(bucketName, aclType, donutName string, nodes map[string]node) (bu
b.nodes = nodes
b.objects = make(map[string]object)
b.lock = new(sync.RWMutex)
return b, bucketMetadata, nil
metadata := BucketMetadata{}
metadata.Name = bucketName
metadata.ACL = aclType
metadata.Created = t
return b, metadata, nil
}
func (b bucket) getBucketName() string {
@ -93,7 +97,7 @@ func (b bucket) getObjectName(fileName, diskPath, bucketPath string) (string, er
return newObjectMetadata.Object, nil
}
func (b bucket) GetObjectMetadata(objectName string) (*objectMetadata, error) {
func (b bucket) GetObjectMetadata(objectName string) (ObjectMetadata, error) {
return b.objects[objectName].GetObjectMetadata()
}
@ -183,14 +187,14 @@ func (b bucket) ReadObject(objectName string) (reader io.ReadCloser, size int64,
if !ok {
return nil, 0, iodine.New(ObjectNotFound{Object: objectName}, nil)
}
// verify if donutObjectMetadata is readable, before we server the request
donutObjMetadata, err := object.GetDonutObjectMetadata()
// verify if sysObjectMetadata is readable, before we server the request
sysObjMetadata, err := object.GetSystemObjectMetadata()
if err != nil {
return nil, 0, iodine.New(err, nil)
}
// read and reply back to GetObject() request in a go-routine
go b.readEncodedData(b.normalizeObjectName(objectName), writer, donutObjMetadata)
return reader, donutObjMetadata.Size, nil
go b.readEncodedData(b.normalizeObjectName(objectName), writer, sysObjMetadata)
return reader, sysObjMetadata.Size, nil
}
// WriteObject - write a new object into bucket
@ -207,10 +211,10 @@ func (b bucket) WriteObject(objectName string, objectData io.Reader, expectedMD5
sumMD5 := md5.New()
sum512 := sha512.New()
objectMetadata := new(objectMetadata)
donutObjectMetadata := new(donutObjectMetadata)
objectMetadata.Version = objectMetadataVersion
donutObjectMetadata.Version = donutObjectMetadataVersion
objMetadata := new(ObjectMetadata)
sysObjMetadata := new(SystemObjectMetadata)
objMetadata.Version = objectMetadataVersion
sysObjMetadata.Version = systemObjectMetadataVersion
size := metadata["contentLength"]
sizeInt, err := strconv.ParseInt(size, 10, 64)
if err != nil {
@ -225,8 +229,8 @@ func (b bucket) WriteObject(objectName string, objectData io.Reader, expectedMD5
if err != nil {
return "", iodine.New(err, nil)
}
donutObjectMetadata.Size = totalLength
objectMetadata.Size = totalLength
sysObjMetadata.Size = totalLength
objMetadata.Size = totalLength
case false:
// calculate data and parity dictated by total number of writers
k, m, err := b.getDataAndParity(len(writers))
@ -239,50 +243,50 @@ func (b bucket) WriteObject(objectName string, objectData io.Reader, expectedMD5
return "", iodine.New(err, nil)
}
/// donutMetadata section
donutObjectMetadata.BlockSize = 10 * 1024 * 1024
donutObjectMetadata.ChunkCount = chunkCount
donutObjectMetadata.DataDisks = k
donutObjectMetadata.ParityDisks = m
donutObjectMetadata.ErasureTechnique = "Cauchy"
donutObjectMetadata.Size = int64(totalLength)
// keep size inside objectMetadata as well for Object API requests
objectMetadata.Size = int64(totalLength)
sysObjMetadata.BlockSize = 10 * 1024 * 1024
sysObjMetadata.ChunkCount = chunkCount
sysObjMetadata.DataDisks = k
sysObjMetadata.ParityDisks = m
sysObjMetadata.ErasureTechnique = "Cauchy"
sysObjMetadata.Size = int64(totalLength)
// keep size inside ObjectMetadata as well for Object API requests
objMetadata.Size = int64(totalLength)
}
objectMetadata.Bucket = b.getBucketName()
objectMetadata.Object = objectName
objectMetadata.Metadata = metadata
objMetadata.Bucket = b.getBucketName()
objMetadata.Object = objectName
objMetadata.Metadata = metadata
dataMD5sum := sumMD5.Sum(nil)
dataSHA512sum := sum512.Sum(nil)
objectMetadata.Created = time.Now().UTC()
objMetadata.Created = time.Now().UTC()
// keeping md5sum for the object in two different places
// one for object storage and another is for internal use
hexMD5Sum := hex.EncodeToString(dataMD5sum)
hex512Sum := hex.EncodeToString(dataSHA512sum)
objectMetadata.MD5Sum = hexMD5Sum
objectMetadata.SHA512Sum = hex512Sum
donutObjectMetadata.MD5Sum = hexMD5Sum
donutObjectMetadata.SHA512Sum = hex512Sum
objMetadata.MD5Sum = hexMD5Sum
objMetadata.SHA512Sum = hex512Sum
sysObjMetadata.MD5Sum = hexMD5Sum
sysObjMetadata.SHA512Sum = hex512Sum
// Verify if the written object is equal to what is expected, only if it is requested as such
if strings.TrimSpace(expectedMD5Sum) != "" {
if err := b.isMD5SumEqual(strings.TrimSpace(expectedMD5Sum), objectMetadata.MD5Sum); err != nil {
if err := b.isMD5SumEqual(strings.TrimSpace(expectedMD5Sum), objMetadata.MD5Sum); err != nil {
return "", iodine.New(err, nil)
}
}
// write donut specific metadata
if err := b.writeDonutObjectMetadata(b.normalizeObjectName(objectName), donutObjectMetadata); err != nil {
if err := b.writeSystemObjectMetadata(b.normalizeObjectName(objectName), sysObjMetadata); err != nil {
return "", iodine.New(err, nil)
}
// write object specific metadata
if err := b.writeObjectMetadata(b.normalizeObjectName(objectName), objectMetadata); err != nil {
if err := b.writeObjectMetadata(b.normalizeObjectName(objectName), objMetadata); err != nil {
return "", iodine.New(err, nil)
}
// close all writers, when control flow reaches here
for _, writer := range writers {
writer.Close()
}
return objectMetadata.MD5Sum, nil
return objMetadata.MD5Sum, nil
}
// isMD5SumEqual - returns error if md5sum mismatches, other its `nil`
@ -305,41 +309,41 @@ func (b bucket) isMD5SumEqual(expectedMD5Sum, actualMD5Sum string) error {
}
// writeObjectMetadata - write additional object metadata
func (b bucket) writeObjectMetadata(objectName string, objectMetadata *objectMetadata) error {
if objectMetadata == nil {
func (b bucket) writeObjectMetadata(objectName string, objMetadata *ObjectMetadata) error {
if objMetadata == nil {
return iodine.New(InvalidArgument{}, nil)
}
objectMetadataWriters, err := b.getDiskWriters(objectName, objectMetadataConfig)
objMetadataWriters, err := b.getDiskWriters(objectName, objectMetadataConfig)
if err != nil {
return iodine.New(err, nil)
}
for _, objectMetadataWriter := range objectMetadataWriters {
defer objectMetadataWriter.Close()
for _, objMetadataWriter := range objMetadataWriters {
defer objMetadataWriter.Close()
}
for _, objectMetadataWriter := range objectMetadataWriters {
jenc := json.NewEncoder(objectMetadataWriter)
if err := jenc.Encode(objectMetadata); err != nil {
for _, objMetadataWriter := range objMetadataWriters {
jenc := json.NewEncoder(objMetadataWriter)
if err := jenc.Encode(objMetadata); err != nil {
return iodine.New(err, nil)
}
}
return nil
}
// writeDonutObjectMetadata - write donut related object metadata
func (b bucket) writeDonutObjectMetadata(objectName string, donutObjectMetadata *donutObjectMetadata) error {
if donutObjectMetadata == nil {
// writeSystemObjectMetadata - write donut related object metadata
func (b bucket) writeSystemObjectMetadata(objectName string, sysObjMetadata *SystemObjectMetadata) error {
if sysObjMetadata == nil {
return iodine.New(InvalidArgument{}, nil)
}
donutObjectMetadataWriters, err := b.getDiskWriters(objectName, donutObjectMetadataConfig)
sysObjMetadataWriters, err := b.getDiskWriters(objectName, sysObjectMetadataConfig)
if err != nil {
return iodine.New(err, nil)
}
for _, donutObjectMetadataWriter := range donutObjectMetadataWriters {
defer donutObjectMetadataWriter.Close()
for _, sysObjMetadataWriter := range sysObjMetadataWriters {
defer sysObjMetadataWriter.Close()
}
for _, donutObjectMetadataWriter := range donutObjectMetadataWriters {
jenc := json.NewEncoder(donutObjectMetadataWriter)
if err := jenc.Encode(donutObjectMetadata); err != nil {
for _, sysObjMetadataWriter := range sysObjMetadataWriters {
jenc := json.NewEncoder(sysObjMetadataWriter)
if err := jenc.Encode(sysObjMetadata); err != nil {
return iodine.New(err, nil)
}
}
@ -403,8 +407,8 @@ func (b bucket) writeEncodedData(k, m uint8, writers []io.WriteCloser, objectDat
}
// readEncodedData -
func (b bucket) readEncodedData(objectName string, writer *io.PipeWriter, donutObjMetadata *donutObjectMetadata) {
expectedMd5sum, err := hex.DecodeString(donutObjMetadata.MD5Sum)
func (b bucket) readEncodedData(objectName string, writer *io.PipeWriter, sysObjMetadata SystemObjectMetadata) {
expectedMd5sum, err := hex.DecodeString(sysObjMetadata.MD5Sum)
if err != nil {
writer.CloseWithError(iodine.New(err, nil))
return
@ -421,18 +425,18 @@ func (b bucket) readEncodedData(objectName string, writer *io.PipeWriter, donutO
mwriter := io.MultiWriter(writer, hasher)
switch len(readers) == 1 {
case false:
if donutObjMetadata.ErasureTechnique == "" {
if sysObjMetadata.ErasureTechnique == "" {
writer.CloseWithError(iodine.New(MissingErasureTechnique{}, nil))
return
}
encoder, err := newEncoder(donutObjMetadata.DataDisks, donutObjMetadata.ParityDisks, donutObjMetadata.ErasureTechnique)
encoder, err := newEncoder(sysObjMetadata.DataDisks, sysObjMetadata.ParityDisks, sysObjMetadata.ErasureTechnique)
if err != nil {
writer.CloseWithError(iodine.New(err, nil))
return
}
totalLeft := donutObjMetadata.Size
for i := 0; i < donutObjMetadata.ChunkCount; i++ {
decodedData, err := b.decodeEncodedData(totalLeft, int64(donutObjMetadata.BlockSize), readers, encoder, writer)
totalLeft := sysObjMetadata.Size
for i := 0; i < sysObjMetadata.ChunkCount; i++ {
decodedData, err := b.decodeEncodedData(totalLeft, int64(sysObjMetadata.BlockSize), readers, encoder, writer)
if err != nil {
writer.CloseWithError(iodine.New(err, nil))
return
@ -442,7 +446,7 @@ func (b bucket) readEncodedData(objectName string, writer *io.PipeWriter, donutO
writer.CloseWithError(iodine.New(err, nil))
return
}
totalLeft = totalLeft - int64(donutObjMetadata.BlockSize)
totalLeft = totalLeft - int64(sysObjMetadata.BlockSize)
}
case true:
_, err := io.Copy(writer, readers[0])

23
pkg/storage/donut/definitions.go
View File

@ -18,8 +18,8 @@ package donut
import "time"
// objectMetadata object specific metadata per object
type objectMetadata struct {
// ObjectMetadata object specific metadata per object
type ObjectMetadata struct {
// version
Version string `json:"version"`
@ -37,8 +37,8 @@ type objectMetadata struct {
Metadata map[string]string `json:"metadata"`
}
// donutObjectMetadata container for donut specific internal metadata per object
type donutObjectMetadata struct {
// SystemObjectMetadata container for donut system specific metadata per object
type SystemObjectMetadata struct {
// version
Version string `json:"version"`
@ -57,14 +57,21 @@ type donutObjectMetadata struct {
SHA512Sum string `json:"sys.sha512sum"`
}
// donutMetadata container for donut level metadata
type donutMetadata struct {
// Metadata container for donut metadata
type Metadata struct {
Version string `json:"version"`
}
// bucketMetadata container for bucket level metadata
type bucketMetadata struct {
// AllBuckets container for all buckets
type AllBuckets struct {
Buckets map[string]BucketMetadata
}
// BucketMetadata container for bucket level metadata
type BucketMetadata struct {
Version string `json:"version"`
Name string `json:"name"`
ACL string `json:"acl"`
Created time.Time `json:"created"`
Metadata map[string]string `json:"metadata"`
}

84
pkg/storage/donut/donut.go
View File

@ -25,7 +25,6 @@ import (
"strconv"
"strings"
"sync"
"time"
"github.com/minio/minio/pkg/iodine"
)
@ -40,17 +39,18 @@ type donut struct {
// config files used inside Donut
const (
// donut object metadata and config
donutObjectMetadataConfig = "donutObjectMetadata.json"
donutConfig = "donutMetadata.json"
// donut system object metadata
sysObjectMetadataConfig = "sysObjectMetadata.json"
// donut system config
donutConfig = "donutConfig.json"
// bucket, object metadata
bucketMetadataConfig = "bucketMetadata.json"
objectMetadataConfig = "objectMetadata.json"
// versions
objectMetadataVersion = "1.0"
donutObjectMetadataVersion = "1.0"
objectMetadataVersion = "1.0.0"
systemObjectMetadataVersion = "1.0.0"
)
// attachDonutNode - wrapper function to instantiate a new node for associatedt donut
@ -98,24 +98,24 @@ func (dt donut) MakeBucket(bucket, acl string) error {
}
// GetBucketMetadata - get bucket metadata
func (dt donut) GetBucketMetadata(bucket string) (map[string]string, error) {
func (dt donut) GetBucketMetadata(bucketName string) (BucketMetadata, error) {
dt.lock.RLock()
defer dt.lock.RUnlock()
if err := dt.listDonutBuckets(); err != nil {
return nil, iodine.New(err, nil)
return BucketMetadata{}, iodine.New(err, nil)
}
if _, ok := dt.buckets[bucket]; !ok {
return nil, iodine.New(BucketNotFound{Bucket: bucket}, nil)
if _, ok := dt.buckets[bucketName]; !ok {
return BucketMetadata{}, iodine.New(BucketNotFound{Bucket: bucketName}, nil)
}
metadata, err := dt.getDonutBucketMetadata()
if err != nil {
return nil, iodine.New(err, nil)
return BucketMetadata{}, iodine.New(err, nil)
}
return metadata[bucket], nil
return metadata.Buckets[bucketName], nil
}
// SetBucketMetadata - set bucket metadata
func (dt donut) SetBucketMetadata(bucket string, bucketMetadata map[string]string) error {
func (dt donut) SetBucketMetadata(bucketName string, bucketMetadata map[string]string) error {
dt.lock.Lock()
defer dt.lock.Unlock()
if err := dt.listDonutBuckets(); err != nil {
@ -125,28 +125,31 @@ func (dt donut) SetBucketMetadata(bucket string, bucketMetadata map[string]strin
if err != nil {
return iodine.New(err, nil)
}
oldBucketMetadata := metadata[bucket]
// TODO ignore rest of the keys for now, only mutable data is "acl"
oldBucketMetadata["acl"] = bucketMetadata["acl"]
metadata[bucket] = oldBucketMetadata
oldBucketMetadata := metadata.Buckets[bucketName]
acl, ok := bucketMetadata["acl"]
if !ok {
return iodine.New(InvalidArgument{}, nil)
}
oldBucketMetadata.ACL = acl
metadata.Buckets[bucketName] = oldBucketMetadata
return dt.setDonutBucketMetadata(metadata)
}
// ListBuckets - return list of buckets
func (dt donut) ListBuckets() (metadata map[string]map[string]string, err error) {
func (dt donut) ListBuckets() (map[string]BucketMetadata, error) {
dt.lock.RLock()
defer dt.lock.RUnlock()
if err := dt.listDonutBuckets(); err != nil {
return nil, iodine.New(err, nil)
}
metadata, err = dt.getDonutBucketMetadata()
metadata, err := dt.getDonutBucketMetadata()
if err != nil {
// intentionally left out the error when Donut is empty
// but we need to revisit this area in future - since we need
// to figure out between acceptable and unacceptable errors
return make(map[string]map[string]string), nil
return make(map[string]BucketMetadata), nil
}
return metadata, nil
return metadata.Buckets, nil
}
// ListObjects - return list of objects
@ -233,7 +236,7 @@ func (dt donut) GetObject(bucket, object string) (reader io.ReadCloser, size int
}
// GetObjectMetadata - get object metadata
func (dt donut) GetObjectMetadata(bucket, object string) (map[string]string, error) {
func (dt donut) GetObjectMetadata(bucket, object string) (ObjectMetadata, error) {
dt.lock.RLock()
defer dt.lock.RUnlock()
errParams := map[string]string{
@ -241,10 +244,10 @@ func (dt donut) GetObjectMetadata(bucket, object string) (map[string]string, err
"object": object,
}
if err := dt.listDonutBuckets(); err != nil {
return nil, iodine.New(err, errParams)
return ObjectMetadata{}, iodine.New(err, errParams)
}
if _, ok := dt.buckets[bucket]; !ok {
return nil, iodine.New(BucketNotFound{Bucket: bucket}, errParams)
return ObjectMetadata{}, iodine.New(BucketNotFound{Bucket: bucket}, errParams)
}
//
// there is a potential issue here, if the object comes after the truncated list
@ -253,26 +256,14 @@ func (dt donut) GetObjectMetadata(bucket, object string) (map[string]string, err
// will fix it when we bring in persistent json into Donut - TODO
objectList, _, _, err := dt.buckets[bucket].ListObjects("", "", "", 1000)
if err != nil {
return nil, iodine.New(err, errParams)
return ObjectMetadata{}, iodine.New(err, errParams)
}
for _, objectName := range objectList {
if objectName == 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 dt.buckets[bucket].GetObjectMetadata(object)
}
}
return nil, iodine.New(ObjectNotFound{Object: object}, errParams)
return ObjectMetadata{}, iodine.New(ObjectNotFound{Object: object}, errParams)
}
// getDiskWriters -
@ -315,7 +306,7 @@ func (dt donut) getBucketMetadataReaders() ([]io.ReadCloser, error) {
}
//
func (dt donut) setDonutBucketMetadata(metadata map[string]map[string]string) error {
func (dt donut) setDonutBucketMetadata(metadata *AllBuckets) error {
writers, err := dt.getBucketMetadataWriters()
if err != nil {
return iodine.New(err, nil)
@ -332,8 +323,8 @@ func (dt donut) setDonutBucketMetadata(metadata map[string]map[string]string) er
return nil
}
func (dt donut) getDonutBucketMetadata() (map[string]map[string]string, error) {
metadata := make(map[string]map[string]string)
func (dt donut) getDonutBucketMetadata() (*AllBuckets, error) {
metadata := new(AllBuckets)
readers, err := dt.getBucketMetadataReaders()
if err != nil {
return nil, iodine.New(err, nil)
@ -343,7 +334,7 @@ func (dt donut) getDonutBucketMetadata() (map[string]map[string]string, error) {
}
for _, reader := range readers {
jenc := json.NewDecoder(reader)
if err := jenc.Decode(&metadata); err != nil {
if err := jenc.Decode(metadata); err != nil {
return nil, iodine.New(err, nil)
}
}
@ -380,8 +371,9 @@ func (dt donut) makeDonutBucket(bucketName, acl string) error {
metadata, err := dt.getDonutBucketMetadata()
if err != nil {
if os.IsNotExist(iodine.ToError(err)) {
metadata := make(map[string]map[string]string)
metadata[bucketName] = bucketMetadata
metadata := new(AllBuckets)
metadata.Buckets = make(map[string]BucketMetadata)
metadata.Buckets[bucketName] = bucketMetadata
err = dt.setDonutBucketMetadata(metadata)
if err != nil {
return iodine.New(err, nil)
@ -390,7 +382,7 @@ func (dt donut) makeDonutBucket(bucketName, acl string) error {
}
return iodine.New(err, nil)
}
metadata[bucketName] = bucketMetadata
metadata.Buckets[bucketName] = bucketMetadata
err = dt.setDonutBucketMetadata(metadata)
if err != nil {
return iodine.New(err, nil)

17
pkg/storage/donut/donut_test.go
View File

@ -26,7 +26,6 @@ import (
"path/filepath"
"strconv"
"testing"
"time"
. "github.com/minio/check"
)
@ -113,7 +112,7 @@ func (s *MySuite) TestMakeBucketAndList(c *C) {
buckets, err := donut.ListBuckets()
c.Assert(err, IsNil)
c.Assert(len(buckets), Equals, 1)
c.Assert(buckets["foo"]["acl"], Equals, "private")
c.Assert(buckets["foo"].ACL, Equals, "private")
}
// test re-create bucket
@ -202,9 +201,9 @@ func (s *MySuite) TestNewObjectMetadata(c *C) {
objectMetadata, err := donut.GetObjectMetadata("foo", "obj")
c.Assert(err, IsNil)
c.Assert(objectMetadata["contentType"], Equals, metadata["contentType"])
c.Assert(objectMetadata["foo"], Equals, metadata["foo"])
c.Assert(objectMetadata["hello"], Equals, metadata["hello"])
c.Assert(objectMetadata.Metadata["contentType"], Equals, metadata["contentType"])
c.Assert(objectMetadata.Metadata["foo"], Equals, metadata["foo"])
c.Assert(objectMetadata.Metadata["hello"], Equals, metadata["hello"])
}
// test create object fails without name
@ -255,11 +254,9 @@ func (s *MySuite) TestNewObjectCanBeWritten(c *C) {
actualMetadata, err := donut.GetObjectMetadata("foo", "obj")
c.Assert(err, IsNil)
c.Assert(expectedMd5Sum, Equals, actualMetadata["md5"])
c.Assert(strconv.Itoa(len(data)), Equals, actualMetadata["size"])
c.Assert("1.0", Equals, actualMetadata["version"])
_, err = time.Parse(time.RFC3339Nano, actualMetadata["created"])
c.Assert(err, IsNil)
c.Assert(expectedMd5Sum, Equals, actualMetadata.MD5Sum)
c.Assert(int64(len(data)), Equals, actualMetadata.Size)
c.Assert("1.0.0", Equals, actualMetadata.Version)
}
// test list objects

6
pkg/storage/donut/interfaces.go
View File

@ -29,9 +29,9 @@ type Donut interface {
// ObjectStorage is a donut object storage interface
type ObjectStorage interface {
// Storage service operations
GetBucketMetadata(bucket string) (map[string]string, error)
GetBucketMetadata(bucket string) (BucketMetadata, error)
SetBucketMetadata(bucket string, metadata map[string]string) error
ListBuckets() (map[string]map[string]string, error)
ListBuckets() (map[string]BucketMetadata, error)
MakeBucket(bucket, acl string) error
// Bucket operations
@ -39,7 +39,7 @@ type ObjectStorage interface {
// Object operations
GetObject(bucket, object string) (io.ReadCloser, int64, error)
GetObjectMetadata(bucket, object string) (map[string]string, error)
GetObjectMetadata(bucket, object string) (ObjectMetadata, error)
PutObject(bucket, object, expectedMD5Sum string, reader io.ReadCloser, metadata map[string]string) (string, error)
}

28
pkg/storage/donut/object.go
View File

@ -41,26 +41,26 @@ func newObject(objectName, p string) (object, error) {
return o, nil
}
func (o object) GetObjectMetadata() (*objectMetadata, error) {
objectMetadata := new(objectMetadata)
objectMetadataBytes, err := ioutil.ReadFile(filepath.Join(o.objectPath, objectMetadataConfig))
func (o object) GetObjectMetadata() (ObjectMetadata, error) {
objMetadata := ObjectMetadata{}
objMetadataBytes, err := ioutil.ReadFile(filepath.Join(o.objectPath, objectMetadataConfig))
if err != nil {
return nil, iodine.New(ObjectNotFound{Object: o.name}, nil)
return ObjectMetadata{}, iodine.New(ObjectNotFound{Object: o.name}, nil)
}
if err := json.Unmarshal(objectMetadataBytes, objectMetadata); err != nil {
return nil, iodine.New(err, nil)
if err := json.Unmarshal(objMetadataBytes, &objMetadata); err != nil {
return ObjectMetadata{}, iodine.New(err, nil)
}
return objectMetadata, nil
return objMetadata, nil
}
func (o object) GetDonutObjectMetadata() (*donutObjectMetadata, error) {
donutObjectMetadata := new(donutObjectMetadata)
donutObjectMetadataBytes, err := ioutil.ReadFile(filepath.Join(o.objectPath, donutObjectMetadataConfig))
func (o object) GetSystemObjectMetadata() (SystemObjectMetadata, error) {
sysObjMetadata := SystemObjectMetadata{}
sysObjMetadataBytes, err := ioutil.ReadFile(filepath.Join(o.objectPath, sysObjectMetadataConfig))
if err != nil {
return nil, iodine.New(ObjectNotFound{Object: o.name}, nil)
return SystemObjectMetadata{}, iodine.New(ObjectNotFound{Object: o.name}, nil)
}
if err := json.Unmarshal(donutObjectMetadataBytes, donutObjectMetadata); err != nil {
return nil, iodine.New(err, nil)
if err := json.Unmarshal(sysObjMetadataBytes, &sysObjMetadata); err != nil {
return SystemObjectMetadata{}, iodine.New(err, nil)
}
return donutObjectMetadata, nil
return sysObjMetadata, nil
}

47
pkg/storage/drivers/donut/donut.go
View File

@ -26,7 +26,6 @@ import (
"strconv"
"strings"
"sync"
"time"
"io/ioutil"
@ -141,13 +140,9 @@ func (d donutDriver) ListBuckets() (results []drivers.BucketMetadata, err error)
return nil, err
}
for name, metadata := range buckets {
created, err := time.Parse(time.RFC3339Nano, metadata["created"])
if err != nil {
return nil, iodine.New(err, nil)
}
result := drivers.BucketMetadata{
Name: name,
Created: created,
Created: metadata.Created,
}
results = append(results, result)
}
@ -195,18 +190,10 @@ func (d donutDriver) GetBucketMetadata(bucketName string) (drivers.BucketMetadat
if err != nil {
return drivers.BucketMetadata{}, iodine.New(drivers.BucketNotFound{Bucket: bucketName}, nil)
}
created, err := time.Parse(time.RFC3339Nano, metadata["created"])
if err != nil {
return drivers.BucketMetadata{}, iodine.New(err, nil)
}
acl, ok := metadata["acl"]
if !ok {
return drivers.BucketMetadata{}, iodine.New(drivers.BackendCorrupted{}, nil)
}
bucketMetadata := drivers.BucketMetadata{
Name: bucketName,
Created: created,
ACL: drivers.BucketACL(acl),
Created: metadata.Created,
ACL: drivers.BucketACL(metadata.ACL),
}
return bucketMetadata, nil
}
@ -332,22 +319,14 @@ func (d donutDriver) GetObjectMetadata(bucketName, objectName string) (drivers.O
Object: objectName,
}, errParams)
}
created, err := time.Parse(time.RFC3339Nano, metadata["created"])
if err != nil {
return drivers.ObjectMetadata{}, iodine.New(err, errParams)
}
size, err := strconv.ParseInt(metadata["size"], 10, 64)
if err != nil {
return drivers.ObjectMetadata{}, iodine.New(err, errParams)
}
objectMetadata := drivers.ObjectMetadata{
Bucket: bucketName,
Key: objectName,
ContentType: metadata["contentType"],
Created: created,
Md5: metadata["md5"],
Size: size,
ContentType: metadata.Metadata["contentType"],
Created: metadata.Created,
Md5: metadata.MD5Sum,
Size: metadata.Size,
}
return objectMetadata, nil
}
@ -390,18 +369,10 @@ func (d donutDriver) ListObjects(bucketName string, resources drivers.BucketReso
if err != nil {
return nil, drivers.BucketResourcesMetadata{}, iodine.New(err, errParams)
}
t, err := time.Parse(time.RFC3339Nano, objectMetadata["created"])
if err != nil {
return nil, drivers.BucketResourcesMetadata{}, iodine.New(err, nil)
}
size, err := strconv.ParseInt(objectMetadata["size"], 10, 64)
if err != nil {
return nil, drivers.BucketResourcesMetadata{}, iodine.New(err, nil)
}
metadata := drivers.ObjectMetadata{
Key: objectName,
Created: t,
Size: size,
Created: objectMetadata.Created,
Size: objectMetadata.Size,
}
results = append(results, metadata)
}