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Adding list objects to donut

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This commit is contained in:
Frederick F. Kautz IV 2015-03-22 15:33:52 -07:00
parent 64fed14aac
commit 03f51eac29
3 changed files with 58 additions and 19 deletions
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17
pkg/storage/donut/donut.go
View File

@ -7,11 +7,11 @@ import "io"
// Donut interface
type Donut interface {
CreateBucket(bucket string) error
ListBuckets() ([]string, error)
GetObjectWriter(bucket, object string) (ObjectWriter, error)
GetObject(bucket, object string) (io.ReadCloser, error)
GetObjectMetadata(bucket, object string) (map[string]string, error)
// ListObjects(bucket string) ([]string, error)
GetObjectWriter(bucket, object string) (ObjectWriter, error)
ListBuckets() ([]string, error)
ListObjects(bucket string) ([]string, error)
}
// Bucket interface
@ -22,19 +22,20 @@ type Bucket interface {
// Node interface
type Node interface {
GetBuckets() ([]string, error)
GetWriter(bucket, object string) (Writer, error)
GetReader(bucket, object string) (io.ReadCloser, error)
GetMetadata(bucket, object string) (map[string]string, error)
GetDonutMetadata(bucket, object string) (map[string]string, error)
GetMetadata(bucket, object string) (map[string]string, error)
GetReader(bucket, object string) (io.ReadCloser, error)
GetWriter(bucket, object string) (Writer, error)
ListObjects(bucket string) ([]string, error)
}
// ObjectWriter interface
type ObjectWriter interface {
Write([]byte) (int, error)
Close() error
CloseWithError(error) error
SetMetadata(map[string]string) error
GetMetadata() (map[string]string, error)
SetMetadata(map[string]string) error
Write([]byte) (int, error)
}
// Writer interface

55
pkg/storage/donut/donutdriver.go
View File

@ -16,6 +16,7 @@ import (
"github.com/minio-io/minio/pkg/encoding/erasure"
"github.com/minio-io/minio/pkg/utils/split"
"path/filepath"
)
type donutDriver struct {
@ -128,6 +129,19 @@ func (driver donutDriver) GetObjectMetadata(bucketName, object string) (map[stri
return nil, errors.New("Bucket not found")
}
func (driver donutDriver) ListObjects(bucketName string) ([]string, error) {
if bucket, ok := driver.buckets[bucketName]; ok {
nodes, err := bucket.GetNodes()
if err != nil {
return nil, err
}
if node, ok := driver.nodes[nodes[0]]; ok {
return node.ListObjects(bucketName + ":0:0")
}
}
return nil, errors.New("Bucket not found")
}
func erasureReader(readers []io.ReadCloser, donutMetadata map[string]string, writer *io.PipeWriter) {
totalChunks, _ := strconv.Atoi(donutMetadata["chunkCount"])
totalLeft, _ := strconv.Atoi(donutMetadata["totalLength"])
@ -259,12 +273,12 @@ type localDirectoryNode struct {
root string
}
func (d localDirectoryNode) GetBuckets() ([]string, error) {
func (node localDirectoryNode) GetBuckets() ([]string, error) {
return nil, errors.New("Not Implemented")
}
func (d localDirectoryNode) GetWriter(bucket, object string) (Writer, error) {
objectPath := path.Join(d.root, bucket, object)
func (node localDirectoryNode) GetWriter(bucket, object string) (Writer, error) {
objectPath := path.Join(node.root, bucket, object)
err := os.MkdirAll(objectPath, 0700)
if err != nil {
return nil, err
@ -272,19 +286,19 @@ func (d localDirectoryNode) GetWriter(bucket, object string) (Writer, error) {
return newDonutFileWriter(objectPath)
}
func (d localDirectoryNode) GetReader(bucket, object string) (io.ReadCloser, error) {
return os.Open(path.Join(d.root, bucket, object, "data"))
func (node localDirectoryNode) GetReader(bucket, object string) (io.ReadCloser, error) {
return os.Open(path.Join(node.root, bucket, object, "data"))
}
func (d localDirectoryNode) GetMetadata(bucket, object string) (map[string]string, error) {
return d.getMetadata(bucket, object, "metadata.json")
func (node localDirectoryNode) GetMetadata(bucket, object string) (map[string]string, error) {
return node.getMetadata(bucket, object, "metadata.json")
}
func (d localDirectoryNode) GetDonutMetadata(bucket, object string) (map[string]string, error) {
return d.getMetadata(bucket, object, "donutMetadata.json")
func (node localDirectoryNode) GetDonutMetadata(bucket, object string) (map[string]string, error) {
return node.getMetadata(bucket, object, "donutMetadata.json")
}
func (d localDirectoryNode) getMetadata(bucket, object, fileName string) (map[string]string, error) {
file, err := os.Open(path.Join(d.root, bucket, object, fileName))
func (node localDirectoryNode) getMetadata(bucket, object, fileName string) (map[string]string, error) {
file, err := os.Open(path.Join(node.root, bucket, object, fileName))
defer file.Close()
if err != nil {
return nil, err
@ -295,7 +309,26 @@ func (d localDirectoryNode) getMetadata(bucket, object, fileName string) (map[st
return nil, err
}
return metadata, nil
}
func (node localDirectoryNode) ListObjects(bucketName string) ([]string, error) {
prefix := path.Join(node.root, bucketName)
var objects []string
if err := filepath.Walk(prefix, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if !info.IsDir() && strings.HasSuffix(path, "data") {
object := strings.TrimPrefix(path, prefix+"/")
object = strings.TrimSuffix(object, "/data")
objects = append(objects, object)
}
return nil
}); err != nil {
return nil, err
}
sort.Strings(objects)
return objects, nil
}
func newDonutFileWriter(objectDir string) (Writer, error) {

5
pkg/storage/donut/donutdriver_test.go
View File

@ -200,4 +200,9 @@ func (s *MySuite) TestMultipleNewObjects(c *C) {
_, err = io.Copy(&readerBuffer2, reader)
c.Assert(err, IsNil)
c.Assert(readerBuffer2.Bytes(), DeepEquals, []byte("two"))
// test list objects
listObjects, err := donut.ListObjects("foo")
c.Assert(err, IsNil)
c.Assert(listObjects, DeepEquals, []string{"obj1", "obj2"})
}