ipld-eth-server/pkg/debug/backend.go
2023-04-14 14:49:39 +08:00

55 lines
2.0 KiB
Go

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