ipld-eth-server/pkg/core/blockchain.go

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// VulcanizeDB
// Copyright © 2018 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package core
import (
"math/big"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/core/types"
)
type BlockChain interface {
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ContractDataFetcher
GetBlockByNumber(blockNumber int64) (Block, error)
GetHeaderByNumber(blockNumber int64) (Header, error)
GetLogs(contract Contract, startingBlockNumber *big.Int, endingBlockNumber *big.Int) ([]Log, error)
GetEthLogsWithCustomQuery(query ethereum.FilterQuery) ([]types.Log, error)
LastBlock() *big.Int
Node() Node
}
type ContractDataFetcher interface {
FetchContractData(abiJSON string, address string, method string, methodArgs []interface{}, result interface{}, blockNumber int64) error
}