mirror of
https://github.com/hyperledger/fabric-samples.git
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2c43e03591
Created parser, contract and utils packages and extracted each piece of functionality into its own files. Removed "Get" prefix from methods and changed return values from interfaces to structs. Signed-off-by: Stanislav Jakuschevskij <stas@two-giants.com>
87 lines
2 KiB
Go
87 lines
2 KiB
Go
package parser
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import (
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"offChainData/utils"
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"github.com/hyperledger/fabric-protos-go-apiv2/common"
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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 Block struct {
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block *common.Block
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validationCodes []byte
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transactions []Transaction
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}
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func ParseBlock(block *common.Block) Block {
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validationCodes := extractTransactionValidationCodes(block)
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return Block{block, validationCodes, nil}
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}
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func (b *Block) Number() uint64 {
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header := utils.AssertDefined(b.block.GetHeader(), "missing block header")
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return header.GetNumber()
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}
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// TODO: needs cache, getPayloads, parsePayload
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func (b *Block) Transactions() []Transaction {
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return nil
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}
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func (b *Block) ToProto() *common.Block {
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return nil
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}
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func (b *Block) payloads() []*common.Payload {
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var payloads []*common.Payload
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for _, envelopeBytes := range b.block.GetData().GetData() {
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envelope := &common.Envelope{}
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if err := proto.Unmarshal(envelopeBytes, envelope); err != nil {
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panic(err)
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}
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payload := &common.Payload{}
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if err := proto.Unmarshal(envelope.Payload, payload); err != nil {
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panic(err)
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}
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payloads = append(payloads, payload)
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}
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return payloads
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}
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// TODO not sure about this
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func (pb *Block) statusCode(txIndex int) peer.TxValidationCode {
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blockMetadata := utils.AssertDefined(
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pb.block.GetMetadata(),
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"missing block metadata",
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)
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metadata := blockMetadata.GetMetadata()
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if int(common.BlockMetadataIndex_TRANSACTIONS_FILTER) >= len(metadata) {
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return peer.TxValidationCode_INVALID_OTHER_REASON
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}
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statusCodes := metadata[common.BlockMetadataIndex_TRANSACTIONS_FILTER]
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if txIndex >= len(statusCodes) {
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return peer.TxValidationCode_INVALID_OTHER_REASON
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}
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return peer.TxValidationCode(statusCodes[txIndex])
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}
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func extractTransactionValidationCodes(block *common.Block) []byte {
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metadata := utils.AssertDefined(
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block.GetMetadata(),
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"missing block metadata",
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)
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return utils.AssertDefined(
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metadata.GetMetadata()[common.BlockMetadataIndex_TRANSACTIONS_FILTER],
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"missing transaction validation code",
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)
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}
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