417b18ec6a
towards generic method polling and reposito;y; config settings to filterevents/methods by account address; refactoring some stuff out of repo and into converter; remove fetcher and instead call blockchain's FetchContractData directly; finishing tests
88 lines
2.8 KiB
Go
88 lines
2.8 KiB
Go
// VulcanizeDB
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// Copyright © 2018 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 geth
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import (
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"math/big"
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"github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/common"
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"golang.org/x/net/context"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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vulcCommon "github.com/vulcanize/vulcanizedb/pkg/geth/converters/common"
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)
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type BlockChain struct {
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client core.EthClient
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blockConverter vulcCommon.BlockConverter
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headerConverter vulcCommon.HeaderConverter
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node core.Node
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}
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func NewBlockChain(client core.EthClient, node core.Node, converter vulcCommon.TransactionConverter) *BlockChain {
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return &BlockChain{
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client: client,
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blockConverter: vulcCommon.NewBlockConverter(converter),
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headerConverter: vulcCommon.HeaderConverter{},
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node: node,
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}
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}
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func (blockChain *BlockChain) GetBlockByNumber(blockNumber int64) (block core.Block, err error) {
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gethBlock, err := blockChain.client.BlockByNumber(context.Background(), big.NewInt(blockNumber))
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if err != nil {
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return block, err
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}
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return blockChain.blockConverter.ToCoreBlock(gethBlock)
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}
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func (blockChain *BlockChain) GetHeaderByNumber(blockNumber int64) (header core.Header, err error) {
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gethHeader, err := blockChain.client.HeaderByNumber(context.Background(), big.NewInt(blockNumber))
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if err != nil {
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return header, err
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}
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return blockChain.headerConverter.Convert(gethHeader)
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}
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func (blockChain *BlockChain) GetLogs(contract core.Contract, startingBlockNumber, endingBlockNumber *big.Int) ([]core.Log, error) {
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if endingBlockNumber == nil {
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endingBlockNumber = startingBlockNumber
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}
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contractAddress := common.HexToAddress(contract.Hash)
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fc := ethereum.FilterQuery{
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FromBlock: startingBlockNumber,
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ToBlock: endingBlockNumber,
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Addresses: []common.Address{contractAddress},
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}
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gethLogs, err := blockChain.client.FilterLogs(context.Background(), fc)
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if err != nil {
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return []core.Log{}, err
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}
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logs := vulcCommon.ToCoreLogs(gethLogs)
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return logs, nil
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}
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func (blockChain *BlockChain) LastBlock() *big.Int {
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block, _ := blockChain.client.HeaderByNumber(context.Background(), nil)
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return block.Number
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}
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func (blockChain *BlockChain) Node() core.Node {
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return blockChain.node
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}
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