forked from cerc-io/ipld-eth-server
70 lines
2.2 KiB
Go
70 lines
2.2 KiB
Go
// VulcanizeDB
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// Copyright © 2019 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package btc
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import (
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"bytes"
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"fmt"
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"github.com/btcsuite/btcd/wire"
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"github.com/btcsuite/btcutil"
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)
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// PayloadConverter satisfies the PayloadConverter interface for bitcoin
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type PayloadConverter struct{}
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// NewPayloadConverter creates a pointer to a new PayloadConverter which satisfies the PayloadConverter interface
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func NewPayloadConverter() *PayloadConverter {
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return &PayloadConverter{}
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}
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// Convert method is used to convert a bitcoin BlockPayload to an IPLDPayload
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// Satisfies the shared.PayloadConverter interface
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func (pc *PayloadConverter) Convert(payload interface{}) (interface{}, error) {
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btcBlockPayload, ok := payload.(BlockPayload)
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if !ok {
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return nil, fmt.Errorf("btc converter: expected payload type %T got %T", BlockPayload{}, payload)
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}
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msgBlock := wire.NewMsgBlock(btcBlockPayload.Header)
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for _, tx := range btcBlockPayload.Txs {
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msgBlock.AddTransaction(tx.MsgTx())
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}
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w := bytes.NewBuffer(make([]byte, 0, msgBlock.SerializeSize()))
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if err := msgBlock.Serialize(w); err != nil {
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return nil, err
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}
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utilBlock := btcutil.NewBlockFromBlockAndBytes(msgBlock, w.Bytes())
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utilBlock.SetHeight(btcBlockPayload.Height)
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txMeta := make([]TxModel, len(btcBlockPayload.Txs))
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for _, tx := range utilBlock.Transactions() {
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index := tx.Index()
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txModel := TxModel{
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TxHash: tx.Hash().String(),
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Index: int64(tx.Index()),
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HasWitness: tx.HasWitness(),
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}
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if tx.HasWitness() {
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txModel.WitnessHash = tx.WitnessHash().String()
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}
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txMeta[index] = txModel
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}
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return IPLDPayload{
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Block: utilBlock,
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TxMetaData: txMeta,
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}, nil
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}
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