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114 lines
2.7 KiB
114 lines
2.7 KiB
package s3_backend
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import (
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"fmt"
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"os"
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"sync/atomic"
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"github.com/aws/aws-sdk-go/aws"
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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/glog"
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)
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func uploadToS3(sess s3iface.S3API, filename string, destBucket string, destKey string,
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attributes map[string]string,
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fn func(progressed int64, percentage float32) error) (fileSize int64, err error) {
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//open the file
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f, err := os.Open(filename)
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if err != nil {
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return 0, fmt.Errorf("failed to open file %q, %v", filename, err)
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}
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defer f.Close()
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info, err := f.Stat()
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if err != nil {
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return 0, fmt.Errorf("failed to stat file %q, %v", filename, err)
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}
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fileSize = info.Size()
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partSize := int64(64 * 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(sess, func(u *s3manager.Uploader) {
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u.PartSize = partSize
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u.Concurrency = 5
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})
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fileReader := &s3UploadProgressedReader{
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fp: f,
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size: fileSize,
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read: -fileSize,
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fn: fn,
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}
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// process tagging
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tags := ""
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for k, v := range attributes {
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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 + "=" + v
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}
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// Upload the file to S3.
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var result *s3manager.UploadOutput
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result, err = uploader.Upload(&s3manager.UploadInput{
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Bucket: aws.String(destBucket),
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Key: aws.String(destKey),
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Body: fileReader,
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ACL: aws.String("private"),
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ServerSideEncryption: aws.String("AES256"),
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StorageClass: aws.String("STANDARD_IA"),
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Tagging: aws.String(tags),
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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 0, fmt.Errorf("failed to upload file %s: %v", filename, err)
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}
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glog.V(1).Infof("file %s uploaded to %s\n", filename, result.Location)
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return
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}
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// adapted from https://github.com/aws/aws-sdk-go/pull/1868
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type s3UploadProgressedReader struct {
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fp *os.File
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size int64
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read int64
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fn func(progressed int64, percentage float32) error
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}
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func (r *s3UploadProgressedReader) Read(p []byte) (int, error) {
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return r.fp.Read(p)
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}
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func (r *s3UploadProgressedReader) ReadAt(p []byte, off int64) (int, error) {
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n, err := r.fp.ReadAt(p, off)
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if err != nil {
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return n, err
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}
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// Got the length have read( or means has uploaded), and you can construct your message
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atomic.AddInt64(&r.read, int64(n))
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if r.fn != nil {
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read := r.read
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if err := r.fn(read, float32(read*100)/float32(r.size)); err != nil {
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return n, err
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}
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}
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return n, err
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}
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func (r *s3UploadProgressedReader) Seek(offset int64, whence int) (int64, error) {
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return r.fp.Seek(offset, whence)
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}
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