55 lines
2.0 KiB
Go
55 lines
2.0 KiB
Go
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// VulcanizeDB
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// Copyright © 2022 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 debug
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import (
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"context"
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"errors"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/eth/tracers"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/cerc-io/ipld-eth-server/v4/pkg/eth"
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)
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var _ tracers.Backend = &Backend{}
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var (
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errMethodNotSupported = errors.New("backend method not supported")
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)
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// Backend implements tracers.Backend interface
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type Backend struct {
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eth.Backend
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}
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// StateAtBlock retrieves the state database associated with a certain block
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func (b *Backend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, checkLive, preferDisk bool) (*state.StateDB, error) {
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rpcBlockNumber := rpc.BlockNumber(block.NumberU64())
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statedb, _, err := b.StateAndHeaderByNumberOrHash(ctx, rpc.BlockNumberOrHashWithNumber(rpcBlockNumber))
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return statedb, err
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}
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// StateAtTransaction returns the execution environment of a certain transaction
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func (b *Backend) StateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (core.Message, vm.BlockContext, *state.StateDB, error) {
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return nil, vm.BlockContext{}, nil, errMethodNotSupported
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}
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