mirror of
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Merge pull request #31 from fkautz/pr_out_extracting_storage_api_to_interface
This commit is contained in:
Frederick F. Kautz IV
commit
e410337d26
@ -21,7 +21,8 @@ import (
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"reflect"
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"github.com/minio-io/minio/pkg/httpserver"
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storageModule "github.com/minio-io/minio/pkg/storage"
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mstorage "github.com/minio-io/minio/pkg/storage"
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"github.com/minio-io/minio/pkg/storage/inmemory"
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"github.com/minio-io/minio/pkg/webapi/minioapi"
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)
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@ -29,7 +30,11 @@ func Start() {
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var ctrlChans []chan<- string
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var statusChans []<-chan error
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ctrlChan, statusChan, storage := storageModule.Start()
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var ctrlChan chan<- string
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var statusChan <-chan error
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var storage mstorage.Storage
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ctrlChan, statusChan, storage = inmemory.Start()
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ctrlChans = append(ctrlChans, ctrlChan)
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statusChans = append(statusChans, statusChan)
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152
pkg/storage/inmemory/inmemory.go
Normal file
152
pkg/storage/inmemory/inmemory.go
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@ -0,0 +1,152 @@
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package inmemory
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import (
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"bytes"
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"crypto/sha256"
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"fmt"
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"io"
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"log"
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"strings"
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"time"
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mstorage "github.com/minio-io/minio/pkg/storage"
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)
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type Storage struct {
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bucketdata map[string]storedBucket
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objectdata map[string]storedObject
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}
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type storedBucket struct {
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metadata mstorage.BucketMetadata
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// owner string // TODO
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// id string // TODO
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}
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type storedObject struct {
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metadata mstorage.ObjectMetadata
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data []byte
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}
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func (storage *Storage) CopyObjectToWriter(w io.Writer, bucket string, object string) (int64, error) {
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// TODO synchronize access
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// get object
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key := bucket + ":" + object
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if val, ok := storage.objectdata[key]; ok {
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objectBuffer := bytes.NewBuffer(val.data)
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written, err := io.Copy(w, objectBuffer)
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return written, err
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} else {
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return 0, mstorage.ObjectNotFound{Bucket: bucket, Path: object}
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}
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}
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func (storage *Storage) StoreObject(bucket string, key string, data io.Reader) error {
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objectKey := bucket + ":" + key
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if _, ok := storage.objectdata[objectKey]; ok == true {
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return mstorage.ObjectExists{Bucket: bucket, Key: key}
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}
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var bytesBuffer bytes.Buffer
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newObject := storedObject{}
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if _, ok := io.Copy(&bytesBuffer, data); ok == nil {
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size := bytesBuffer.Len()
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etag := fmt.Sprintf("%x", sha256.Sum256(bytesBuffer.Bytes()))
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newObject.metadata = mstorage.ObjectMetadata{
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Key: key,
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SecCreated: time.Now().Unix(),
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Size: size,
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ETag: etag,
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}
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newObject.data = bytesBuffer.Bytes()
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}
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storage.objectdata[objectKey] = newObject
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return nil
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}
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func (storage *Storage) StoreBucket(bucketName string) error {
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if !isValidBucket(bucketName) {
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return mstorage.BucketNameInvalid{Bucket: bucketName}
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}
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if _, ok := storage.bucketdata[bucketName]; ok == true {
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return mstorage.BucketExists{Bucket: bucketName}
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}
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newBucket := storedBucket{}
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newBucket.metadata = mstorage.BucketMetadata{
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Name: bucketName,
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Created: time.Now().Unix(),
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}
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log.Println(bucketName)
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storage.bucketdata[bucketName] = newBucket
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return nil
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}
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func (storage *Storage) ListObjects(bucket, prefix string, count int) []mstorage.ObjectMetadata {
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// TODO prefix and count handling
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var results []mstorage.ObjectMetadata
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for key, object := range storage.objectdata {
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if strings.HasPrefix(key, bucket+":") {
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results = append(results, object.metadata)
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}
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}
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return results
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}
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func (storage *Storage) ListBuckets(prefix string) []mstorage.BucketMetadata {
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// TODO prefix handling
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var results []mstorage.BucketMetadata
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for _, bucket := range storage.bucketdata {
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results = append(results, bucket.metadata)
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}
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return results
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}
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func Start() (chan<- string, <-chan error, *Storage) {
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ctrlChannel := make(chan string)
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errorChannel := make(chan error)
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go start(ctrlChannel, errorChannel)
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return ctrlChannel, errorChannel, &Storage{
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bucketdata: make(map[string]storedBucket),
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objectdata: make(map[string]storedObject),
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}
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}
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func start(ctrlChannel <-chan string, errorChannel chan<- error) {
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close(errorChannel)
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}
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func isValidBucket(bucket string) bool {
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l := len(bucket)
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if l < 3 || l > 63 {
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return false
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}
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valid := false
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prev := byte('.')
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for i := 0; i < len(bucket); i++ {
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c := bucket[i]
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switch {
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default:
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return false
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case 'a' <= c && c <= 'z':
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valid = true
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case '0' <= c && c <= '9':
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// Is allowed, but bucketname can't be just numbers.
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// Therefore, don't set valid to true
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case c == '-':
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if prev == '.' {
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return false
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}
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case c == '.':
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if prev == '.' || prev == '-' {
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return false
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}
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}
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prev = c
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}
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if prev == '-' || prev == '.' {
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return false
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}
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return valid
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}
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@ -17,30 +17,18 @@
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package storage
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import (
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"bytes"
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"fmt"
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"io"
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"log"
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"strings"
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"time"
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"crypto/sha256"
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)
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type Storage struct {
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bucketdata map[string]storedBucket
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objectdata map[string]storedObject
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}
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type Storage interface {
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// Bucket Operations
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StoreBucket(bucket string) error
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ListBuckets(prefix string) []BucketMetadata
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type storedObject struct {
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metadata ObjectMetadata
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data []byte
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}
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type storedBucket struct {
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metadata BucketMetadata
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// owner string // TODO
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// id string // TODO
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// Object Operations
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CopyObjectToWriter(w io.Writer, bucket string, object string) (int64, error)
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StoreObject(bucket string, key string, data io.Reader) error
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ListObjects(bucket, prefix string, count int) []ObjectMetadata
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}
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type BucketMetadata struct {
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@ -54,126 +42,3 @@ type ObjectMetadata struct {
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Size int
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ETag string
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}
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func isValidBucket(bucket string) bool {
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l := len(bucket)
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if l < 3 || l > 63 {
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return false
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}
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valid := false
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prev := byte('.')
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for i := 0; i < len(bucket); i++ {
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c := bucket[i]
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switch {
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default:
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return false
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case 'a' <= c && c <= 'z':
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valid = true
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case '0' <= c && c <= '9':
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// Is allowed, but bucketname can't be just numbers.
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// Therefore, don't set valid to true
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case c == '-':
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if prev == '.' {
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return false
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}
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case c == '.':
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if prev == '.' || prev == '-' {
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return false
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}
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}
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prev = c
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}
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if prev == '-' || prev == '.' {
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return false
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}
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return valid
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}
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func (storage *Storage) CopyObjectToWriter(w io.Writer, bucket string, object string) (int64, error) {
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// TODO synchronize access
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// get object
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key := bucket + ":" + object
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if val, ok := storage.objectdata[key]; ok {
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objectBuffer := bytes.NewBuffer(val.data)
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written, err := io.Copy(w, objectBuffer)
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return written, err
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} else {
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return 0, ObjectNotFound{bucket: bucket, path: object}
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}
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}
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func (storage *Storage) StoreObject(bucket string, key string, data io.Reader) error {
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objectKey := bucket + ":" + key
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if _, ok := storage.objectdata[objectKey]; ok == true {
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return ObjectExists{bucket: bucket, key: key}
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}
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var bytesBuffer bytes.Buffer
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newObject := storedObject{}
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if _, ok := io.Copy(&bytesBuffer, data); ok == nil {
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size := bytesBuffer.Len()
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etag := fmt.Sprintf("%x", sha256.Sum256(bytesBuffer.Bytes()))
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newObject.metadata = ObjectMetadata{
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Key: key,
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SecCreated: time.Now().Unix(),
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Size: size,
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ETag: etag,
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}
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newObject.data = bytesBuffer.Bytes()
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}
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storage.objectdata[objectKey] = newObject
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return nil
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}
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func (storage *Storage) StoreBucket(bucketName string) error {
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if !isValidBucket(bucketName) {
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return BucketNameInvalid{bucket: bucketName}
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}
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if _, ok := storage.bucketdata[bucketName]; ok == true {
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return BucketExists{bucket: bucketName}
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}
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newBucket := storedBucket{}
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newBucket.metadata = BucketMetadata{
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Name: bucketName,
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Created: time.Now().Unix(),
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}
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log.Println(bucketName)
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storage.bucketdata[bucketName] = newBucket
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return nil
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}
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func (storage *Storage) ListObjects(bucket, prefix string, count int) []ObjectMetadata {
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// TODO prefix and count handling
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var results []ObjectMetadata
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for key, object := range storage.objectdata {
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if strings.HasPrefix(key, bucket+":") {
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results = append(results, object.metadata)
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}
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}
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return results
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}
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func (storage *Storage) ListBuckets(prefix string) []BucketMetadata {
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// TODO prefix handling
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var results []BucketMetadata
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for _, bucket := range storage.bucketdata {
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results = append(results, bucket.metadata)
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}
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return results
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}
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func Start() (chan<- string, <-chan error, *Storage) {
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ctrlChannel := make(chan string)
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errorChannel := make(chan error)
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go start(ctrlChannel, errorChannel)
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return ctrlChannel, errorChannel, &Storage{
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bucketdata: make(map[string]storedBucket),
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objectdata: make(map[string]storedObject),
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}
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}
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func start(ctrlChannel <-chan string, errorChannel chan<- error) {
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close(errorChannel)
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}
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@ -1,37 +1,37 @@
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package storage
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type GenericError struct {
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bucket string
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path string
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Bucket string
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Path string
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}
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type ObjectExists struct {
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bucket string
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key string
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Bucket string
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Key string
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}
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type BucketNameInvalid struct {
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bucket string
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Bucket string
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}
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type BucketExists struct {
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bucket string
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Bucket string
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}
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type ObjectNotFound GenericError
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func (self ObjectNotFound) Error() string {
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return "Object not Found: " + self.bucket + "#" + self.path
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return "Object not Found: " + self.Bucket + "#" + self.Path
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}
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func (self ObjectExists) Error() string {
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return "Object exists: " + self.bucket + "#" + self.key
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return "Object exists: " + self.Bucket + "#" + self.Key
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}
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func (self BucketNameInvalid) Error() string {
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return "Bucket name invalid: " + self.bucket
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return "Bucket name invalid: " + self.Bucket
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}
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func (self BucketExists) Error() string {
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return "Bucket exists: " + self.bucket
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return "Bucket exists: " + self.Bucket
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}
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@ -29,14 +29,14 @@ import (
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)
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type minioApi struct {
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storage *mstorage.Storage
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storage mstorage.Storage
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}
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type encoder interface {
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Encode(v interface{}) error
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}
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func HttpHandler(storage *mstorage.Storage) http.Handler {
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func HttpHandler(storage mstorage.Storage) http.Handler {
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mux := mux.NewRouter()
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api := minioApi{
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storage: storage,
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