mirror of
https://github.com/seaweedfs/seaweedfs.git
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279 lines
8.1 KiB
Go
279 lines
8.1 KiB
Go
package s3
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import (
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"fmt"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/credentials"
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"github.com/aws/aws-sdk-go/aws/request"
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"github.com/aws/aws-sdk-go/aws/session"
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v4 "github.com/aws/aws-sdk-go/aws/signer/v4"
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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/aws/aws-sdk-go/service/s3/s3manager"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/pb/remote_pb"
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"github.com/chrislusf/seaweedfs/weed/remote_storage"
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"github.com/chrislusf/seaweedfs/weed/util"
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"io"
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"reflect"
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)
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func init() {
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remote_storage.RemoteStorageClientMakers["s3"] = new(s3RemoteStorageMaker)
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}
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type s3RemoteStorageMaker struct{}
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func (s s3RemoteStorageMaker) HasBucket() bool {
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return true
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}
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func (s s3RemoteStorageMaker) Make(conf *remote_pb.RemoteConf) (remote_storage.RemoteStorageClient, error) {
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client := &s3RemoteStorageClient{
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conf: conf,
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}
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config := &aws.Config{
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Region: aws.String(conf.S3Region),
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Endpoint: aws.String(conf.S3Endpoint),
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S3ForcePathStyle: aws.Bool(conf.S3ForcePathStyle),
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S3DisableContentMD5Validation: aws.Bool(true),
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}
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if conf.S3AccessKey != "" && conf.S3SecretKey != "" {
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config.Credentials = credentials.NewStaticCredentials(conf.S3AccessKey, conf.S3SecretKey, "")
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}
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sess, err := session.NewSession(config)
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if err != nil {
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return nil, fmt.Errorf("create aws session: %v", err)
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}
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if conf.S3V4Signature {
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sess.Handlers.Sign.PushBackNamed(v4.SignRequestHandler)
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}
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sess.Handlers.Build.PushBack(func(r *request.Request) {
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r.HTTPRequest.Header.Set("User-Agent", "SeaweedFS/"+util.VERSION_NUMBER)
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})
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sess.Handlers.Build.PushFront(skipSha256PayloadSigning)
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client.conn = s3.New(sess)
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return client, nil
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}
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type s3RemoteStorageClient struct {
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conf *remote_pb.RemoteConf
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conn s3iface.S3API
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}
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var _ = remote_storage.RemoteStorageClient(&s3RemoteStorageClient{})
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func (s *s3RemoteStorageClient) Traverse(remote *remote_pb.RemoteStorageLocation, visitFn remote_storage.VisitFunc) (err error) {
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pathKey := remote.Path[1:]
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listInput := &s3.ListObjectsV2Input{
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Bucket: aws.String(remote.Bucket),
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ContinuationToken: nil,
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Delimiter: nil, // not aws.String("/"), iterate through all entries
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EncodingType: nil,
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ExpectedBucketOwner: nil,
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FetchOwner: nil,
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MaxKeys: nil, // aws.Int64(1000),
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Prefix: aws.String(pathKey),
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RequestPayer: nil,
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StartAfter: nil,
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}
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isLastPage := false
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for !isLastPage && err == nil {
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listErr := s.conn.ListObjectsV2Pages(listInput, func(page *s3.ListObjectsV2Output, lastPage bool) bool {
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for _, content := range page.Contents {
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key := *content.Key
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key = "/" + key
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dir, name := util.FullPath(key).DirAndName()
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if err := visitFn(dir, name, false, &filer_pb.RemoteEntry{
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RemoteMtime: (*content.LastModified).Unix(),
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RemoteSize: *content.Size,
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RemoteETag: *content.ETag,
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StorageName: s.conf.Name,
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}); err != nil {
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return false
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}
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}
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listInput.ContinuationToken = page.NextContinuationToken
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isLastPage = lastPage
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return true
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})
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if listErr != nil {
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err = fmt.Errorf("list %v: %v", remote, listErr)
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}
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}
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return
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}
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func (s *s3RemoteStorageClient) ReadFile(loc *remote_pb.RemoteStorageLocation, offset int64, size int64) (data []byte, err error) {
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downloader := s3manager.NewDownloaderWithClient(s.conn, func(u *s3manager.Downloader) {
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u.PartSize = int64(4 * 1024 * 1024)
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u.Concurrency = 1
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})
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dataSlice := make([]byte, int(size))
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writerAt := aws.NewWriteAtBuffer(dataSlice)
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_, err = downloader.Download(writerAt, &s3.GetObjectInput{
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Bucket: aws.String(loc.Bucket),
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Key: aws.String(loc.Path[1:]),
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Range: aws.String(fmt.Sprintf("bytes=%d-%d", offset, offset+size-1)),
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})
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if err != nil {
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return nil, fmt.Errorf("failed to download file %s%s: %v", loc.Bucket, loc.Path, err)
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}
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return writerAt.Bytes(), nil
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}
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func (s *s3RemoteStorageClient) WriteDirectory(loc *remote_pb.RemoteStorageLocation, entry *filer_pb.Entry) (err error) {
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return nil
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}
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func (s *s3RemoteStorageClient) RemoveDirectory(loc *remote_pb.RemoteStorageLocation) (err error) {
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return nil
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}
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func (s *s3RemoteStorageClient) WriteFile(loc *remote_pb.RemoteStorageLocation, entry *filer_pb.Entry, reader io.Reader) (remoteEntry *filer_pb.RemoteEntry, err error) {
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fileSize := int64(filer.FileSize(entry))
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partSize := int64(8 * 1024 * 1024) // The minimum/default allowed part size is 5MB
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for partSize*1000 < fileSize {
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partSize *= 4
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}
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// Create an uploader with the session and custom options
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uploader := s3manager.NewUploaderWithClient(s.conn, func(u *s3manager.Uploader) {
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u.PartSize = partSize
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u.Concurrency = 1
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})
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// process tagging
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tags := ""
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for k, v := range entry.Extended {
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if len(tags) > 0 {
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tags = tags + "&"
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}
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tags = tags + k + "=" + string(v)
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}
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// Upload the file to S3.
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_, err = uploader.Upload(&s3manager.UploadInput{
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Bucket: aws.String(loc.Bucket),
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Key: aws.String(loc.Path[1:]),
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Body: reader,
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Tagging: aws.String(tags),
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StorageClass: aws.String(s.conf.S3StorageClass),
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})
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//in case it fails to upload
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if err != nil {
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return nil, fmt.Errorf("upload to %s/%s%s: %v", loc.Name, loc.Bucket, loc.Path, err)
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}
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// read back the remote entry
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return s.readFileRemoteEntry(loc)
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}
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func toTagging(attributes map[string][]byte) *s3.Tagging {
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tagging := &s3.Tagging{}
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for k, v := range attributes {
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tagging.TagSet = append(tagging.TagSet, &s3.Tag{
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Key: aws.String(k),
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Value: aws.String(string(v)),
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})
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}
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return tagging
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}
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func (s *s3RemoteStorageClient) readFileRemoteEntry(loc *remote_pb.RemoteStorageLocation) (*filer_pb.RemoteEntry, error) {
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resp, err := s.conn.HeadObject(&s3.HeadObjectInput{
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Bucket: aws.String(loc.Bucket),
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Key: aws.String(loc.Path[1:]),
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})
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if err != nil {
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return nil, err
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}
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return &filer_pb.RemoteEntry{
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RemoteMtime: resp.LastModified.Unix(),
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RemoteSize: *resp.ContentLength,
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RemoteETag: *resp.ETag,
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StorageName: s.conf.Name,
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}, nil
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}
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func (s *s3RemoteStorageClient) UpdateFileMetadata(loc *remote_pb.RemoteStorageLocation, oldEntry *filer_pb.Entry, newEntry *filer_pb.Entry) (err error) {
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if reflect.DeepEqual(oldEntry.Extended, newEntry.Extended) {
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return nil
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}
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tagging := toTagging(newEntry.Extended)
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if len(tagging.TagSet) > 0 {
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_, err = s.conn.PutObjectTagging(&s3.PutObjectTaggingInput{
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Bucket: aws.String(loc.Bucket),
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Key: aws.String(loc.Path[1:]),
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Tagging: toTagging(newEntry.Extended),
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})
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} else {
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_, err = s.conn.DeleteObjectTagging(&s3.DeleteObjectTaggingInput{
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Bucket: aws.String(loc.Bucket),
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Key: aws.String(loc.Path[1:]),
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})
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}
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return
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}
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func (s *s3RemoteStorageClient) DeleteFile(loc *remote_pb.RemoteStorageLocation) (err error) {
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_, err = s.conn.DeleteObject(&s3.DeleteObjectInput{
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Bucket: aws.String(loc.Bucket),
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Key: aws.String(loc.Path[1:]),
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})
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return
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}
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func (s *s3RemoteStorageClient) ListBuckets() (buckets []*remote_storage.Bucket, err error) {
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resp, err := s.conn.ListBuckets(&s3.ListBucketsInput{})
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if err != nil {
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return nil, fmt.Errorf("list buckets: %v", err)
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}
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for _, b := range resp.Buckets {
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buckets = append(buckets, &remote_storage.Bucket{
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Name: *b.Name,
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CreatedAt: *b.CreationDate,
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})
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}
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return
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}
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func (s *s3RemoteStorageClient) CreateBucket(name string) (err error) {
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_, err = s.conn.CreateBucket(&s3.CreateBucketInput{
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ACL: nil,
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Bucket: aws.String(name),
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CreateBucketConfiguration: nil,
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GrantFullControl: nil,
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GrantRead: nil,
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GrantReadACP: nil,
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GrantWrite: nil,
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GrantWriteACP: nil,
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ObjectLockEnabledForBucket: nil,
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})
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if err != nil {
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return fmt.Errorf("%s create bucket %s: %v", s.conf.Name, name, err)
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}
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return
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}
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func (s *s3RemoteStorageClient) DeleteBucket(name string) (err error) {
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_, err = s.conn.DeleteBucket(&s3.DeleteBucketInput{
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Bucket: aws.String(name),
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})
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if err != nil {
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return fmt.Errorf("delete bucket %s: %v", name, err)
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}
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return
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}
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