mirror of https://github.com/minio/minio.git
100 lines
2.9 KiB
Go
100 lines
2.9 KiB
Go
package donut
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import (
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"io"
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"os"
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"path"
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"sort"
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"strings"
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"encoding/json"
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"github.com/minio-io/iodine"
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"io/ioutil"
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"path/filepath"
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)
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type localDirectoryNode struct {
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root string
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}
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func (d localDirectoryNode) CreateBucket(bucket string) error {
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objectPath := path.Join(d.root, bucket)
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return iodine.New(os.MkdirAll(objectPath, 0700), map[string]string{"bucket": bucket})
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}
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func (d localDirectoryNode) GetBuckets() ([]string, error) {
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files, err := ioutil.ReadDir(d.root)
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if err != nil {
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return nil, iodine.New(err, nil)
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}
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var results []string
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for _, file := range files {
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if file.IsDir() {
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results = append(results, file.Name())
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}
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}
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return results, nil
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}
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func (d localDirectoryNode) GetWriter(bucket, object string) (Writer, error) {
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errParams := map[string]string{"bucket": bucket, "object": object}
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objectPath := path.Join(d.root, bucket, object)
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err := os.MkdirAll(objectPath, 0700)
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if err != nil {
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return nil, iodine.New(err, errParams)
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}
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writer, err := newDonutObjectWriter(objectPath)
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return writer, iodine.New(err, errParams)
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}
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func (d localDirectoryNode) GetReader(bucket, object string) (io.ReadCloser, error) {
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reader, err := os.Open(path.Join(d.root, bucket, object, "data"))
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return reader, iodine.New(err, map[string]string{"bucket": bucket, "object": object})
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}
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func (d localDirectoryNode) GetMetadata(bucket, object string) (map[string]string, error) {
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m, err := d.getMetadata(bucket, object, "metadata.json")
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return m, iodine.New(err, map[string]string{"bucket": bucket, "object": object})
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}
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func (d localDirectoryNode) GetDonutMetadata(bucket, object string) (map[string]string, error) {
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m, err := d.getMetadata(bucket, object, "donutMetadata.json")
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return m, iodine.New(err, map[string]string{"bucket": bucket, "object": object})
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}
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func (d localDirectoryNode) getMetadata(bucket, object, fileName string) (map[string]string, error) {
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errParams := map[string]string{"bucket": bucket, "object": object, "file": fileName}
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file, err := os.Open(path.Join(d.root, bucket, object, fileName))
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defer file.Close()
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if err != nil {
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return nil, iodine.New(err, errParams)
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}
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metadata := make(map[string]string)
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decoder := json.NewDecoder(file)
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if err := decoder.Decode(&metadata); err != nil {
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return nil, iodine.New(err, errParams)
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}
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return metadata, nil
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}
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func (d localDirectoryNode) ListObjects(bucketName string) ([]string, error) {
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errParams := map[string]string{"bucket": bucketName}
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prefix := path.Join(d.root, bucketName)
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var objects []string
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if err := filepath.Walk(prefix, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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return iodine.New(err, errParams)
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}
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if !info.IsDir() && strings.HasSuffix(path, "data") {
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object := strings.TrimPrefix(path, prefix+"/")
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object = strings.TrimSuffix(object, "/data")
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objects = append(objects, object)
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}
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return nil
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}); err != nil {
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return nil, iodine.New(err, errParams)
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}
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sort.Strings(objects)
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return objects, nil
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}
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