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2e6de80c14
Add some methods to the parsing API within the Go off_chain_data sample for consistency with the Node and Java implementations: - ToProto() on Block, Transaction and NamespaceReadWriteSet. - ValidationCode() on Transaction. - Creator() on Transaction Signed-off-by: Mark S. Lewis <Mark.S.Lewis@outlook.com>
92 lines
2.3 KiB
Go
92 lines
2.3 KiB
Go
package parser
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import (
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"fmt"
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"github.com/hyperledger/fabric-protos-go-apiv2/common"
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"github.com/hyperledger/fabric-protos-go-apiv2/msp"
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"github.com/hyperledger/fabric-protos-go-apiv2/peer"
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"google.golang.org/protobuf/proto"
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)
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type payload struct {
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commonPayload *common.Payload
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statusCode int32
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channelHeader *common.ChannelHeader
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creator *creatorIdentity
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}
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func parsePayload(commonPayload *common.Payload, statusCode int32) (*payload, error) {
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channelHeader, err := unmarshalChannelHeaderFrom(commonPayload)
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if err != nil {
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return nil, err
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}
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creator, err := unmarshalCreator(commonPayload)
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if err != nil {
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return nil, err
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}
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result := &payload{
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commonPayload: commonPayload,
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statusCode: statusCode,
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channelHeader: channelHeader,
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creator: &creatorIdentity{creator},
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}
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return result, nil
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}
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func unmarshalChannelHeaderFrom(commonPayload *common.Payload) (*common.ChannelHeader, error) {
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result := &common.ChannelHeader{}
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if err := proto.Unmarshal(commonPayload.GetHeader().GetChannelHeader(), result); err != nil {
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return nil, err
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}
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return result, nil
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}
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func unmarshalCreator(commonPayload *common.Payload) (*msp.SerializedIdentity, error) {
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signatureHeader := &common.SignatureHeader{}
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if err := proto.Unmarshal(commonPayload.GetHeader().GetSignatureHeader(), signatureHeader); err != nil {
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return nil, err
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}
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result := &msp.SerializedIdentity{}
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if err := proto.Unmarshal(signatureHeader.GetCreator(), result); err != nil {
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return nil, err
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}
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return result, nil
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}
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func (p *payload) endorserTransaction() (*endorserTransaction, error) {
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if !p.isEndorserTransaction() {
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return nil, fmt.Errorf("unexpected payload type: %d", p.channelHeader.GetType())
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}
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result := &peer.Transaction{}
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if err := proto.Unmarshal(p.commonPayload.GetData(), result); err != nil {
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return nil, err
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}
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return parseEndorserTransaction(result), nil
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}
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func (p *payload) isEndorserTransaction() bool {
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return p.channelHeader.GetType() == int32(common.HeaderType_ENDORSER_TRANSACTION)
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}
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func (p *payload) isValid() bool {
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return p.statusCode == int32(peer.TxValidationCode_VALID)
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}
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type creatorIdentity struct {
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creator *msp.SerializedIdentity
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}
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func (i *creatorIdentity) MspID() string {
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return i.creator.GetMspid()
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}
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func (i *creatorIdentity) Credentials() []byte {
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return i.creator.GetIdBytes()
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}
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