preparing to support S3 multipart uploads

weed/s3api/filer_multipart.go

@@ -0,0 +1,70 @@
+package s3api
+
+import (
+	"github.com/aws/aws-sdk-go/service/s3"
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/satori/go.uuid"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+)
+
+func (s3a *S3ApiServer) createMultipartUpload(input *s3.CreateMultipartUploadInput) (output *s3.CreateMultipartUploadOutput, code ErrorCode) {
+	uploadId, _ := uuid.NewV4()
+	uploadIdString := uploadId.String()
+
+	if err := s3a.mkdir(s3a.genUploadsFolder(*input.Bucket), uploadIdString, func(entry *filer_pb.Entry) {
+		if entry.Extended == nil {
+			entry.Extended = make(map[string]string)
+		}
+		entry.Extended["key"] = *input.Key
+	}); err != nil {
+		glog.Errorf("NewMultipartUpload error: %v", err)
+		return nil, ErrInternalError
+	}
+
+	output = &s3.CreateMultipartUploadOutput{
+		Bucket:   input.Bucket,
+		Key:      input.Key,
+		UploadId: aws.String(uploadIdString),
+	}
+
+	return
+}
+
+func (s3a *S3ApiServer) completeMultipartUpload(input *s3.CompleteMultipartUploadInput) (output *s3.CompleteMultipartUploadOutput, code ErrorCode) {
+	return
+}
+
+func (s3a *S3ApiServer) abortMultipartUpload(input *s3.AbortMultipartUploadInput) (output *s3.AbortMultipartUploadOutput, code ErrorCode) {
+	return
+}
+
+func (s3a *S3ApiServer) listMultipartUploads(input *s3.ListMultipartUploadsInput) (output *s3.ListMultipartUploadsOutput, code ErrorCode) {
+	entries, err := s3a.list(s3a.genUploadsFolder(*input.Bucket))
+	if err != nil {
+		glog.Errorf("listMultipartUploads %s error: %v", *input.Bucket, err)
+		return nil, ErrNoSuchUpload
+	}
+	output = &s3.ListMultipartUploadsOutput{
+		Bucket:       input.Bucket,
+		Delimiter:    input.Delimiter,
+		EncodingType: input.EncodingType,
+		KeyMarker:    input.KeyMarker,
+		MaxUploads:   input.MaxUploads,
+		Prefix:       input.Prefix,
+	}
+	for _, entry := range entries {
+		if entry.Extended != nil {
+			key := entry.Extended["key"]
+			output.Uploads = append(output.Uploads, &s3.MultipartUpload{
+				Key:      aws.String(key),
+				UploadId: aws.String(entry.Name),
+			})
+		}
+	}
+	return
+}
+
+func (s3a *S3ApiServer) listObjectParts(input *s3.ListPartsInput) (output *s3.ListPartsOutput, code ErrorCode) {
+	return
+}