249 lines
7.3 KiB
Go
249 lines
7.3 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 eth
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import (
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"errors"
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"fmt"
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"math/big"
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"strconv"
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"github.com/cerc-io/ipld-eth-server/v4/pkg/shared"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/statediff/indexer/models"
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"github.com/jmoiron/sqlx"
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log "github.com/sirupsen/logrus"
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)
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// Fetcher interface for substituting mocks in tests
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type Fetcher interface {
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Fetch(cids CIDWrapper) (*IPLDs, error)
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}
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// IPLDFetcher satisfies the IPLDFetcher interface for ethereum
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// It interfaces directly with PG-IPFS
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type IPLDFetcher struct {
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db *sqlx.DB
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}
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// NewIPLDFetcher creates a pointer to a new IPLDFetcher
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func NewIPLDFetcher(db *sqlx.DB) *IPLDFetcher {
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return &IPLDFetcher{
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db: db,
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}
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}
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// Fetch is the exported method for fetching and returning all the IPLDS specified in the CIDWrapper
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func (f *IPLDFetcher) Fetch(cids CIDWrapper) (*IPLDs, error) {
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log.Debug("fetching iplds")
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iplds := new(IPLDs)
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var ok bool
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iplds.TotalDifficulty, ok = new(big.Int).SetString(cids.Header.TotalDifficulty, 10)
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if !ok {
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return nil, errors.New("eth fetcher: unable to set total difficulty")
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}
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iplds.BlockNumber = cids.BlockNumber
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tx, err := f.db.Beginx()
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if err != nil {
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return nil, err
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}
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defer func() {
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if p := recover(); p != nil {
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shared.Rollback(tx)
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panic(p)
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} else if err != nil {
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shared.Rollback(tx)
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} else {
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err = tx.Commit()
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}
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}()
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iplds.Header, err = f.FetchHeader(tx, cids.Header)
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if err != nil {
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return nil, fmt.Errorf("eth pg fetcher: header fetching error: %s", err.Error())
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}
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iplds.Uncles, err = f.FetchUncles(tx, cids.Uncles)
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if err != nil {
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return nil, fmt.Errorf("eth pg fetcher: uncle fetching error: %s", err.Error())
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}
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iplds.Transactions, err = f.FetchTrxs(tx, cids.Transactions)
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if err != nil {
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return nil, fmt.Errorf("eth pg fetcher: transaction fetching error: %s", err.Error())
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}
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iplds.Receipts, err = f.FetchRcts(tx, cids.Receipts)
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if err != nil {
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return nil, fmt.Errorf("eth pg fetcher: receipt fetching error: %s", err.Error())
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}
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iplds.StateNodes, err = f.FetchState(tx, cids.StateNodes)
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if err != nil {
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return nil, fmt.Errorf("eth pg fetcher: state fetching error: %s", err.Error())
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}
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iplds.StorageNodes, err = f.FetchStorage(tx, cids.StorageNodes)
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if err != nil {
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return nil, fmt.Errorf("eth pg fetcher: storage fetching error: %s", err.Error())
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}
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return iplds, err
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}
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// FetchHeader fetches header
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func (f *IPLDFetcher) FetchHeader(tx *sqlx.Tx, c models.HeaderModel) (models.IPLDModel, error) {
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log.Debug("fetching header ipld")
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blockNumber, err := strconv.ParseUint(c.BlockNumber, 10, 64)
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if err != nil {
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return models.IPLDModel{}, err
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}
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headerBytes, err := shared.FetchIPLDByMhKeyAndBlockNumber(tx, c.MhKey, blockNumber)
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if err != nil {
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return models.IPLDModel{}, err
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}
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return models.IPLDModel{
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BlockNumber: c.BlockNumber,
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Data: headerBytes,
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Key: c.CID,
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}, nil
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}
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// FetchUncles fetches uncles
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func (f *IPLDFetcher) FetchUncles(tx *sqlx.Tx, cids []models.UncleModel) ([]models.IPLDModel, error) {
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log.Debug("fetching uncle iplds")
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uncleIPLDs := make([]models.IPLDModel, len(cids))
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for i, c := range cids {
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blockNumber, err := strconv.ParseUint(c.BlockNumber, 10, 64)
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if err != nil {
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return nil, err
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}
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uncleBytes, err := shared.FetchIPLDByMhKeyAndBlockNumber(tx, c.MhKey, blockNumber)
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if err != nil {
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return nil, err
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}
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uncleIPLDs[i] = models.IPLDModel{
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BlockNumber: c.BlockNumber,
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Data: uncleBytes,
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Key: c.CID,
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}
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}
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return uncleIPLDs, nil
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}
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// FetchTrxs fetches transactions
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func (f *IPLDFetcher) FetchTrxs(tx *sqlx.Tx, cids []models.TxModel) ([]models.IPLDModel, error) {
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log.Debug("fetching transaction iplds")
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trxIPLDs := make([]models.IPLDModel, len(cids))
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for i, c := range cids {
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blockNumber, err := strconv.ParseUint(c.BlockNumber, 10, 64)
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if err != nil {
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return nil, err
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}
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txBytes, err := shared.FetchIPLDByMhKeyAndBlockNumber(tx, c.MhKey, blockNumber)
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if err != nil {
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return nil, err
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}
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trxIPLDs[i] = models.IPLDModel{
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BlockNumber: c.BlockNumber,
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Data: txBytes,
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Key: c.CID,
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}
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}
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return trxIPLDs, nil
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}
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// FetchRcts fetches receipts
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func (f *IPLDFetcher) FetchRcts(tx *sqlx.Tx, cids []models.ReceiptModel) ([]models.IPLDModel, error) {
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log.Debug("fetching receipt iplds")
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rctIPLDs := make([]models.IPLDModel, len(cids))
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for i, c := range cids {
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blockNumber, err := strconv.ParseUint(c.BlockNumber, 10, 64)
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if err != nil {
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return nil, err
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}
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rctBytes, err := shared.FetchIPLDByMhKeyAndBlockNumber(tx, c.LeafMhKey, blockNumber)
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if err != nil {
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return nil, err
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}
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//nodeVal, err := DecodeLeafNode(rctBytes)
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rctIPLDs[i] = models.IPLDModel{
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BlockNumber: c.BlockNumber,
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Data: rctBytes,
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Key: c.LeafCID,
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}
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}
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return rctIPLDs, nil
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}
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// FetchState fetches state nodes
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func (f *IPLDFetcher) FetchState(tx *sqlx.Tx, cids []models.StateNodeModel) ([]StateNode, error) {
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log.Debug("fetching state iplds")
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stateNodes := make([]StateNode, 0, len(cids))
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for _, stateNode := range cids {
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if stateNode.CID == "" {
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continue
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}
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blockNumber, err := strconv.ParseUint(stateNode.BlockNumber, 10, 64)
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if err != nil {
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return nil, err
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}
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stateBytes, err := shared.FetchIPLDByMhKeyAndBlockNumber(tx, stateNode.MhKey, blockNumber)
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if err != nil {
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return nil, err
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}
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stateNodes = append(stateNodes, StateNode{
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IPLD: models.IPLDModel{
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BlockNumber: stateNode.BlockNumber,
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Data: stateBytes,
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Key: stateNode.CID,
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},
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StateLeafKey: common.HexToHash(stateNode.StateKey),
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Type: ResolveToNodeType(stateNode.NodeType),
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Path: stateNode.Path,
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})
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}
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return stateNodes, nil
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}
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// FetchStorage fetches storage nodes
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func (f *IPLDFetcher) FetchStorage(tx *sqlx.Tx, cids []models.StorageNodeWithStateKeyModel) ([]StorageNode, error) {
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log.Debug("fetching storage iplds")
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storageNodes := make([]StorageNode, 0, len(cids))
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for _, storageNode := range cids {
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if storageNode.CID == "" || storageNode.StateKey == "" {
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continue
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}
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blockNumber, err := strconv.ParseUint(storageNode.BlockNumber, 10, 64)
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if err != nil {
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return nil, err
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}
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storageBytes, err := shared.FetchIPLDByMhKeyAndBlockNumber(tx, storageNode.MhKey, blockNumber)
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if err != nil {
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return nil, err
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}
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storageNodes = append(storageNodes, StorageNode{
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IPLD: models.IPLDModel{
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BlockNumber: storageNode.BlockNumber,
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Data: storageBytes,
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Key: storageNode.CID,
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},
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StateLeafKey: common.HexToHash(storageNode.StateKey),
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StorageLeafKey: common.HexToHash(storageNode.StorageKey),
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Type: ResolveToNodeType(storageNode.NodeType),
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Path: storageNode.Path,
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})
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}
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return storageNodes, nil
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}
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