path: root/eth/backend.go

// Copyright 2014 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

// Package eth implements the Ethereum protocol.
package eth

import (
	"errors"
	"fmt"
	"math/big"
	"runtime"
	"sync"
	"sync/atomic"

	"github.com/ava-labs/coreth/consensus/dummy"
	mycore "github.com/ava-labs/coreth/core"
	"github.com/ava-labs/coreth/eth/filters"
	"github.com/ava-labs/coreth/eth/gasprice"
	"github.com/ava-labs/coreth/internal/ethapi"
	"github.com/ava-labs/coreth/miner"
	"github.com/ava-labs/coreth/node"
	myparams "github.com/ava-labs/coreth/params"
	"github.com/ava-labs/go-ethereum/accounts"
	"github.com/ava-labs/go-ethereum/accounts/abi/bind"
	"github.com/ava-labs/go-ethereum/common"
	"github.com/ava-labs/go-ethereum/common/hexutil"
	"github.com/ava-labs/go-ethereum/consensus"
	"github.com/ava-labs/go-ethereum/consensus/clique"
	"github.com/ava-labs/go-ethereum/consensus/ethash"
	"github.com/ava-labs/go-ethereum/core"
	"github.com/ava-labs/go-ethereum/core/bloombits"
	"github.com/ava-labs/go-ethereum/core/rawdb"
	"github.com/ava-labs/go-ethereum/core/types"
	"github.com/ava-labs/go-ethereum/core/vm"
	"github.com/ava-labs/go-ethereum/eth/downloader"
	"github.com/ava-labs/go-ethereum/ethdb"
	"github.com/ava-labs/go-ethereum/event"
	"github.com/ava-labs/go-ethereum/log"
	"github.com/ava-labs/go-ethereum/p2p"
	"github.com/ava-labs/go-ethereum/p2p/enr"
	"github.com/ava-labs/go-ethereum/params"
	"github.com/ava-labs/go-ethereum/rlp"
	"github.com/ava-labs/go-ethereum/rpc"
)

type LesServer interface {
	Start(srvr *p2p.Server)
	Stop()
	APIs() []rpc.API
	Protocols() []p2p.Protocol
	SetBloomBitsIndexer(bbIndexer *core.ChainIndexer)
	SetContractBackend(bind.ContractBackend)
}

type BackendCallbacks struct {
	OnQueryAcceptedBlock func() *types.Block
}

// Ethereum implements the Ethereum full node service.
type Ethereum struct {
	config *Config

	// Channel for shutting down the service
	shutdownChan chan bool

	server *p2p.Server

	// Handlers
	txPool          *core.TxPool
	blockchain      *core.BlockChain
	protocolManager *ProtocolManager
	lesServer       LesServer

	// DB interfaces
	chainDb ethdb.Database // Block chain database

	eventMux       *event.TypeMux
	engine         consensus.Engine
	accountManager *accounts.Manager

	bloomRequests chan chan *bloombits.Retrieval // Channel receiving bloom data retrieval requests
	bloomIndexer  *core.ChainIndexer             // Bloom indexer operating during block imports

	APIBackend *EthAPIBackend

	miner     *miner.Miner
	gasPrice  *big.Int
	etherbase common.Address

	networkID     uint64
	netRPCService *ethapi.PublicNetAPI

	lock sync.RWMutex // Protects the variadic fields (e.g. gas price and etherbase)

	txSubmitChan chan struct{}
	bcb          *BackendCallbacks
}

func (s *Ethereum) AddLesServer(ls LesServer) {
	s.lesServer = ls
	ls.SetBloomBitsIndexer(s.bloomIndexer)
}

// SetClient sets a rpc client which connecting to our local node.
func (s *Ethereum) SetContractBackend(backend bind.ContractBackend) {
	// Pass the rpc client to les server if it is enabled.
	if s.lesServer != nil {
		s.lesServer.SetContractBackend(backend)
	}
}

// New creates a new Ethereum object (including the
// initialisation of the common Ethereum object)
func New(ctx *node.ServiceContext, config *Config,
	cb *dummy.ConsensusCallbacks,
	mcb *miner.MinerCallbacks,
	bcb *BackendCallbacks,
	chainDb ethdb.Database) (*Ethereum, error) {
	// Ensure configuration values are compatible and sane
	if config.SyncMode == downloader.LightSync {
		return nil, errors.New("can't run eth.Ethereum in light sync mode, use les.LightEthereum")
	}
	if !config.SyncMode.IsValid() {
		return nil, fmt.Errorf("invalid sync mode %d", config.SyncMode)
	}
	if config.Miner.GasPrice == nil || config.Miner.GasPrice.Cmp(common.Big0