/
dbvalue_encoding.go
62 lines (54 loc) · 1.57 KB
/
dbvalue_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/internal/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 := &VersionAndMetadata{
Version: 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) {
persistedVersionAndMetadata, err := base64.StdEncoding.DecodeString(encodedstr)
if err != nil {
return nil, nil, err
}
versionAndMetadata := &VersionAndMetadata{}
if err = proto.Unmarshal(persistedVersionAndMetadata, versionAndMetadata); err != nil {
return nil, nil, err
}
ver, _, err := version.NewHeightFromBytes(versionAndMetadata.Version)
if err != nil {
return nil, nil, err
}
return ver, versionAndMetadata.Metadata, nil
}
func encodeValueVersionMetadata(value, versionAndMetadata []byte) ([]byte, error) {
val := &ValueVersionMetadata{
Value: value,
VersionAndMetadata: versionAndMetadata,
}
return proto.Marshal(val)
}
func decodeValueVersionMetadata(encodedMsg []byte) (*ValueVersionMetadata, error) {
val := &ValueVersionMetadata{}
if err := proto.Unmarshal(encodedMsg, val); err != nil {
return nil, err
}
return val, nil
}