/
version_field_encoding.go
47 lines (41 loc) · 1.23 KB
/
version_field_encoding.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package statecouchdb
import (
"encoding/base64"
"github.com/golang/protobuf/proto"
"github.com/hyperledger/fabric/core/ledger/kvledger/txmgmt/statedb/statecouchdb/msgs"
"github.com/hyperledger/fabric/core/ledger/kvledger/txmgmt/version"
"github.com/pkg/errors"
)
func encodeVersionAndMetadata(version *version.Height, metadata []byte) (string, error) {
if version == nil {
return "", errors.New("nil version not supported")
}
msg := &msgs.VersionFieldProto{
VersionBytes: version.ToBytes(),
Metadata: metadata,
}
msgBytes, err := proto.Marshal(msg)
if err != nil {
return "", err
}
return base64.StdEncoding.EncodeToString(msgBytes), nil
}
func decodeVersionAndMetadata(encodedstr string) (*version.Height, []byte, error) {
versionFieldBytes, err := base64.StdEncoding.DecodeString(encodedstr)
if err != nil {
return nil, nil, err
}
versionFieldMsg := &msgs.VersionFieldProto{}
if err = proto.Unmarshal(versionFieldBytes, versionFieldMsg); err != nil {
return nil, nil, err
}
ver, _, err := version.NewHeightFromBytes(versionFieldMsg.VersionBytes)
if err != nil {
return nil, nil, err
}
return ver, versionFieldMsg.Metadata, nil
}