Implement presigned policy

pkg/erasure/erasure_encode.go

@@ -22,7 +22,6 @@ package erasure
 import "C"
 import (
 	"errors"
-	"io"
 	"unsafe"
 )
 
@@ -195,53 +194,3 @@ func (e *Erasure) Encode(inputData []byte) (encodedBlocks [][]byte, err error) {
 
 	return encodedBlocks, nil
 }
-
-// EncodeStream erasure codes a block of data in "k" data blocks and "m" parity blocks.
-// Output is [k+m][]blocks of data and parity slices.
-func (e *Erasure) EncodeStream(data io.Reader, size int64) ([][]byte, []byte, error) {
-	k := int(e.params.K) // "k" data blocks
-	m := int(e.params.M) // "m" parity blocks
-	n := k + m           // "n" total encoded blocks
-
-	// Length of a single encoded chunk.
-	// Total number of encoded chunks = "k" data  + "m" parity blocks
-	encodedBlockLen := GetEncodedBlockLen(int(size), uint8(k))
-
-	// Length of total number of "n" data chunks
-	encodedDataBlocksLen := encodedBlockLen * n
-
-	// allocate byte array for encodedBlock length
-	inputData := make([]byte, size, encodedDataBlocksLen)
-
-	_, err := io.ReadFull(data, inputData)
-	if err != nil {
-		// do not check for io.ErrUnexpectedEOF, we know the right amount of size
-		// to be read if its a short read we need to throw error since reader could
-		// have been prematurely closed.
-		if err != io.EOF {
-			return nil, nil, err
-		}
-	}
-
-	// Allocate memory to the "encoded blocks" return buffer
-	encodedBlocks := make([][]byte, n) // Return buffer
-
-	// Neccessary to bridge Go to the C world. C requires 2D arry of pointers to
-	// byte array. "encodedBlocks" is a 2D slice.
-	pointersToEncodedBlock := make([]*byte, n) // Pointers to encoded blocks.
-
-	// Copy data block slices to encoded block buffer
-	for i := 0; i < n; i++ {
-		encodedBlocks[i] = inputData[i*encodedBlockLen : (i+1)*encodedBlockLen]
-		pointersToEncodedBlock[i] = &encodedBlocks[i][0]
-	}
-
-	// Erasure code the data into K data blocks and M parity
-	// blocks. Only the parity blocks are filled. Data blocks remain
-	// intact.
-	C.ec_encode_data(C.int(encodedBlockLen), C.int(k), C.int(m), e.encodeTbls,
-		(**C.uchar)(unsafe.Pointer(&pointersToEncodedBlock[:k][0])), // Pointers to data blocks
-		(**C.uchar)(unsafe.Pointer(&pointersToEncodedBlock[k:][0]))) // Pointers to parity blocks
-
-	return encodedBlocks, inputData[0:size], nil
-}