211 lines
6.2 KiB
Go
211 lines
6.2 KiB
Go
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// 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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"github.com/ethereum/go-ethereum/common"
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"github.com/jmoiron/sqlx"
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log "github.com/sirupsen/logrus"
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"github.com/vulcanize/vulcanizedb/pkg/ipfs"
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"github.com/vulcanize/vulcanizedb/pkg/postgres"
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"github.com/vulcanize/vulcanizedb/pkg/super_node/shared"
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)
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// IPLDPGFetcher satisfies the IPLDFetcher interface for ethereum
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// It interfaces directly with PG-IPFS
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type IPLDPGFetcher struct {
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db *postgres.DB
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}
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// NewIPLDPGFetcher creates a pointer to a new IPLDPGFetcher
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func NewIPLDPGFetcher(db *postgres.DB) *IPLDPGFetcher {
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return &IPLDPGFetcher{
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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 *IPLDPGFetcher) Fetch(cids shared.CIDsForFetching) (shared.IPLDs, error) {
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cidWrapper, ok := cids.(*CIDWrapper)
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if !ok {
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return nil, fmt.Errorf("eth fetcher: expected cids type %T got %T", &CIDWrapper{}, cids)
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}
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log.Debug("fetching iplds")
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var err error
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iplds := IPLDs{}
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iplds.TotalDifficulty, ok = new(big.Int).SetString(cidWrapper.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 = cidWrapper.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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iplds.Header, err = f.FetchHeader(tx, cidWrapper.Header)
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if err != nil {
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shared.Rollback(tx)
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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, cidWrapper.Uncles)
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if err != nil {
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shared.Rollback(tx)
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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, cidWrapper.Transactions)
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if err != nil {
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shared.Rollback(tx)
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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, cidWrapper.Receipts)
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if err != nil {
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shared.Rollback(tx)
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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, cidWrapper.StateNodes)
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if err != nil {
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shared.Rollback(tx)
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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, cidWrapper.StorageNodes)
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if err != nil {
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shared.Rollback(tx)
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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, tx.Commit()
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}
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// FetchHeaders fetches headers
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func (f *IPLDPGFetcher) FetchHeader(tx *sqlx.Tx, c HeaderModel) (ipfs.BlockModel, error) {
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log.Debug("fetching header ipld")
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headerBytes, err := shared.FetchIPLD(tx, c.CID)
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if err != nil {
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return ipfs.BlockModel{}, err
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}
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return ipfs.BlockModel{
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Data: headerBytes,
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CID: c.CID,
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}, nil
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}
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// FetchUncles fetches uncles
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func (f *IPLDPGFetcher) FetchUncles(tx *sqlx.Tx, cids []UncleModel) ([]ipfs.BlockModel, error) {
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log.Debug("fetching uncle iplds")
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uncleIPLDs := make([]ipfs.BlockModel, len(cids))
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for i, c := range cids {
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uncleBytes, err := shared.FetchIPLD(tx, c.CID)
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if err != nil {
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return nil, err
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}
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uncleIPLDs[i] = ipfs.BlockModel{
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Data: uncleBytes,
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CID: 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 *IPLDPGFetcher) FetchTrxs(tx *sqlx.Tx, cids []TxModel) ([]ipfs.BlockModel, error) {
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log.Debug("fetching transaction iplds")
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trxIPLDs := make([]ipfs.BlockModel, len(cids))
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for i, c := range cids {
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txBytes, err := shared.FetchIPLD(tx, c.CID)
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if err != nil {
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return nil, err
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}
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trxIPLDs[i] = ipfs.BlockModel{
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Data: txBytes,
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CID: 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 *IPLDPGFetcher) FetchRcts(tx *sqlx.Tx, cids []ReceiptModel) ([]ipfs.BlockModel, error) {
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log.Debug("fetching receipt iplds")
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rctIPLDs := make([]ipfs.BlockModel, len(cids))
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for i, c := range cids {
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rctBytes, err := shared.FetchIPLD(tx, c.CID)
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if err != nil {
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return nil, err
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}
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rctIPLDs[i] = ipfs.BlockModel{
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Data: rctBytes,
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CID: c.CID,
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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 *IPLDPGFetcher) FetchState(tx *sqlx.Tx, cids []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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stateBytes, err := shared.FetchIPLD(tx, stateNode.CID)
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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: ipfs.BlockModel{
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Data: stateBytes,
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CID: 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 *IPLDPGFetcher) FetchStorage(tx *sqlx.Tx, cids []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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storageBytes, err := shared.FetchIPLD(tx, storageNode.CID)
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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: ipfs.BlockModel{
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Data: storageBytes,
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CID: 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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