func Save(blobpath string, c btncrypt.Cipher, bs blobstore.BlobStore, cb EncodeCallback) error {
var buf bytes.Buffer
zw := zlib.NewWriter(&buf)
enc := gob.NewEncoder(zw)
es := []error{}
if err := cb(enc); err != nil {
es = append(es, fmt.Errorf("Failed to encode state: %v", err))
}
if err := zw.Close(); err != nil {
es = append(es, fmt.Errorf("Failed to close zlib Writer: %v", err))
}
if err := util.ToErrors(es); err != nil {
return err
}
w, err := bs.OpenWriter(blobpath)
if err != nil {
return err
}
cw, err := chunkstore.NewChunkWriter(w, c, chunkstore.ChunkHeader{
PayloadLen: uint32(buf.Len()),
PayloadVersion: 1,
OrigFilename: blobpath,
OrigOffset: 0,
})
if err != nil {
return err
}
if _, err := cw.Write(buf.Bytes()); err != nil {
es = append(es, fmt.Errorf("Failed to write to ChunkWriter: %v", err))
}
if err := cw.Close(); err != nil {
es = append(es, fmt.Errorf("Failed to close ChunkWriter: %v", err))
}
if err := w.Close(); err != nil {
es = append(es, fmt.Errorf("Failed to close blobhandle: %v", err))
}
if err := util.ToErrors(es); err != nil {
return err
}
return nil
}
func genFrameByChunkWriter(t *testing.T, p []byte) []byte {
buf := new(bytes.Buffer)
cw, err := chunkstore.NewChunkWriter(buf, TestCipher(), chunkstore.ChunkHeader{PayloadLen: uint32(len(p))})
if err != nil {
t.Errorf("Failed to create chunk writer: %v", err)
}
if _, err := cw.Write(p); err != nil {
t.Errorf("Failed to write chunk payload: %v", err)
return nil
}
if err := cw.Close(); err != nil {
t.Errorf("Failed to close ChunkWriter: %v", err)
return nil
}
return buf.Bytes()
}