mirror of
https://github.com/seaweedfs/seaweedfs.git
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192 lines
5.3 KiB
Go
192 lines
5.3 KiB
Go
package s3_backend
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import (
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"fmt"
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"io"
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"os"
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"strings"
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"time"
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"github.com/aws/aws-sdk-go/service/s3"
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"github.com/aws/aws-sdk-go/service/s3/s3iface"
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"github.com/google/uuid"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
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"github.com/chrislusf/seaweedfs/weed/storage/backend"
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)
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func init() {
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backend.BackendStorageFactories["s3"] = &S3BackendFactory{}
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}
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type S3BackendFactory struct {
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}
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func (factory *S3BackendFactory) StorageType() backend.StorageType {
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return backend.StorageType("s3")
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}
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func (factory *S3BackendFactory) BuildStorage(configuration backend.StringProperties, configPrefix string, id string) (backend.BackendStorage, error) {
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return newS3BackendStorage(configuration, configPrefix, id)
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}
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type S3BackendStorage struct {
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id string
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aws_access_key_id string
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aws_secret_access_key string
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region string
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bucket string
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endpoint string
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storageClass string
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conn s3iface.S3API
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}
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func newS3BackendStorage(configuration backend.StringProperties, configPrefix string, id string) (s *S3BackendStorage, err error) {
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s = &S3BackendStorage{}
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s.id = id
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s.aws_access_key_id = configuration.GetString(configPrefix + "aws_access_key_id")
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s.aws_secret_access_key = configuration.GetString(configPrefix + "aws_secret_access_key")
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s.region = configuration.GetString(configPrefix + "region")
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s.bucket = configuration.GetString(configPrefix + "bucket")
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s.endpoint = configuration.GetString(configPrefix + "endpoint")
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s.storageClass = configuration.GetString(configPrefix + "storage_class")
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if s.storageClass == "" {
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s.storageClass = "STANDARD_IA"
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}
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s.conn, err = createSession(s.aws_access_key_id, s.aws_secret_access_key, s.region, s.endpoint)
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glog.V(0).Infof("created backend storage s3.%s for region %s bucket %s", s.id, s.region, s.bucket)
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return
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}
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func (s *S3BackendStorage) ToProperties() map[string]string {
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m := make(map[string]string)
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m["aws_access_key_id"] = s.aws_access_key_id
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m["aws_secret_access_key"] = s.aws_secret_access_key
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m["region"] = s.region
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m["bucket"] = s.bucket
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m["endpoint"] = s.endpoint
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m["storage_class"] = s.storageClass
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return m
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}
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func (s *S3BackendStorage) NewStorageFile(key string, tierInfo *volume_server_pb.VolumeInfo) backend.BackendStorageFile {
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if strings.HasPrefix(key, "/") {
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key = key[1:]
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}
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f := &S3BackendStorageFile{
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backendStorage: s,
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key: key,
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tierInfo: tierInfo,
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}
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return f
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}
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func (s *S3BackendStorage) CopyFile(f *os.File, fn func(progressed int64, percentage float32) error) (key string, size int64, err error) {
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randomUuid, _ := uuid.NewRandom()
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key = randomUuid.String()
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glog.V(1).Infof("copying dat file of %s to remote s3.%s as %s", f.Name(), s.id, key)
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size, err = uploadToS3(s.conn, f.Name(), s.bucket, key, s.storageClass, fn)
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return
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}
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func (s *S3BackendStorage) DownloadFile(fileName string, key string, fn func(progressed int64, percentage float32) error) (size int64, err error) {
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glog.V(1).Infof("download dat file of %s from remote s3.%s as %s", fileName, s.id, key)
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size, err = downloadFromS3(s.conn, fileName, s.bucket, key, fn)
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return
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}
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func (s *S3BackendStorage) DeleteFile(key string) (err error) {
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glog.V(1).Infof("delete dat file %s from remote", key)
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err = deleteFromS3(s.conn, s.bucket, key)
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return
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}
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type S3BackendStorageFile struct {
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backendStorage *S3BackendStorage
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key string
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tierInfo *volume_server_pb.VolumeInfo
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}
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func (s3backendStorageFile S3BackendStorageFile) ReadAt(p []byte, off int64) (n int, err error) {
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bytesRange := fmt.Sprintf("bytes=%d-%d", off, off+int64(len(p))-1)
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// glog.V(0).Infof("read %s %s", s3backendStorageFile.key, bytesRange)
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getObjectOutput, getObjectErr := s3backendStorageFile.backendStorage.conn.GetObject(&s3.GetObjectInput{
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Bucket: &s3backendStorageFile.backendStorage.bucket,
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Key: &s3backendStorageFile.key,
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Range: &bytesRange,
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})
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if getObjectErr != nil {
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return 0, fmt.Errorf("bucket %s GetObject %s: %v", s3backendStorageFile.backendStorage.bucket, s3backendStorageFile.key, getObjectErr)
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}
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defer getObjectOutput.Body.Close()
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glog.V(4).Infof("read %s %s", s3backendStorageFile.key, bytesRange)
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glog.V(4).Infof("content range: %s, contentLength: %d", *getObjectOutput.ContentRange, *getObjectOutput.ContentLength)
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for {
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if n, err = getObjectOutput.Body.Read(p); err == nil && n < len(p) {
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p = p[n:]
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} else {
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break
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}
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}
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if err == io.EOF {
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err = nil
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}
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return
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}
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func (s3backendStorageFile S3BackendStorageFile) WriteAt(p []byte, off int64) (n int, err error) {
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panic("not implemented")
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}
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func (s3backendStorageFile S3BackendStorageFile) Truncate(off int64) error {
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panic("not implemented")
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}
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func (s3backendStorageFile S3BackendStorageFile) Close() error {
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return nil
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}
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func (s3backendStorageFile S3BackendStorageFile) GetStat() (datSize int64, modTime time.Time, err error) {
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files := s3backendStorageFile.tierInfo.GetFiles()
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if len(files) == 0 {
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err = fmt.Errorf("remote file info not found")
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return
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}
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datSize = int64(files[0].FileSize)
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modTime = time.Unix(int64(files[0].ModifiedTime), 0)
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return
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}
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func (s3backendStorageFile S3BackendStorageFile) Name() string {
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return s3backendStorageFile.key
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}
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func (s3backendStorageFile S3BackendStorageFile) Sync() error {
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return nil
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}
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