github.com/ebakus/go-ebakus@v1.0.5-0.20200520105415-dbccef9ec421/internal/ethapi/backend.go

// Copyright 2019 The ebakus/go-ebakus Authors
// This file is part of the ebakus/go-ebakus library.
//
// The ebakus/go-ebakus 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 ebakus/go-ebakus 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 ebakus/go-ebakus library. If not, see <http://www.gnu.org/licenses/>.

// Package ethapi implements the general Ebakus API functions.
package ethapi

import (
	"context"
	"math/big"

	"github.com/ebakus/ebakusdb"
	"github.com/ebakus/go-ebakus/accounts"
	"github.com/ebakus/go-ebakus/common"
	"github.com/ebakus/go-ebakus/core"
	"github.com/ebakus/go-ebakus/core/bloombits"
	"github.com/ebakus/go-ebakus/core/state"
	"github.com/ebakus/go-ebakus/core/types"
	"github.com/ebakus/go-ebakus/core/vm"
	"github.com/ebakus/go-ebakus/eth/downloader"
	"github.com/ebakus/go-ebakus/ethdb"
	"github.com/ebakus/go-ebakus/event"
	"github.com/ebakus/go-ebakus/params"
	"github.com/ebakus/go-ebakus/rpc"
)

// Backend interface provides the common API services (that are provided by
// both full and light clients) with access to necessary functions.
type Backend interface {
	// General Ebakus API
	Downloader() *downloader.Downloader
	ProtocolVersion() int
	SuggestPrice(ctx context.Context) (*float64, error)
	ChainDb() ethdb.Database
	EventMux() *event.TypeMux
	AccountManager() *accounts.Manager
	ExtRPCEnabled() bool
	RPCGasCap() *big.Int // global gas cap for eth_call over rpc: DoS protection
	MinGasPrice() float64
	EbakusdbMaxActiveIterators() uint64

	// Blockchain API
	SetHead(number uint64)
	HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error)
	HeaderByHash(ctx context.Context, blockHash common.Hash) (*types.Header, error)
	HeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Header, error)
	BlockByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Block, error)
	BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error)
	BlockByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Block, error)
	StateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*state.StateDB, *types.Header, error)
	StateAndHeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*state.StateDB, *types.Header, error)
	EbakusStateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*ebakusdb.Snapshot, *types.Header, error)
	EbakusStateAndHeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*ebakusdb.Snapshot, *types.Header, error)
	GetBlockAuthor(header *types.Header) (common.Address, error)
	GetReceipts(ctx context.Context, blockHash common.Hash) (types.Receipts, error)
	GetEVM(ctx context.Context, msg core.Message, state *state.StateDB, ebakusState *ebakusdb.Snapshot, header *types.Header) (*vm.EVM, func() error, error)
	SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription
	SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription
	SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription

	// Transaction pool API
	SendTx(ctx context.Context, signedTx *types.Transaction) error
	GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, common.Hash, uint64, uint64, error)
	GetPoolTransactions() (types.Transactions, error)
	GetPoolTransaction(txHash common.Hash) *types.Transaction
	GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error)
	Stats() (pending int, queued int)
	TxPoolContent() (map[common.Address]types.Transactions, map[common.Address]types.Transactions)
	SubscribeNewTxsEvent(chan<- core.NewTxsEvent) event.Subscription

	// Filter API
	BloomStatus() (uint64, uint64)
	GetLogs(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error)
	ServiceFilter(ctx context.Context, session *bloombits.MatcherSession)
	SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription
	SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription

	ChainConfig() *params.ChainConfig
	CurrentBlock() *types.Block
}

func GetAPIs(apiBackend Backend) []rpc.API {
	nonceLock := new(AddrLocker)
	return []rpc.API{
		{
			Namespace: "eth",
			Version:   "1.0",
			Service:   NewPublicEbakusAPI(apiBackend),
			Public:    true,
		}, {
			Namespace: "eth",
			Version:   "1.0",
			Service:   NewPublicBlockChainAPI(apiBackend),
			Public:    true,
		}, {
			Namespace: "eth",
			Version:   "1.0",
			Service:   NewPublicTransactionPoolAPI(apiBackend, nonceLock),
			Public:    true,
		}, {
			Namespace: "txpool",
			Version:   "1.0",
			Service:   NewPublicTxPoolAPI(apiBackend),
			Public:    true,
		}, {
			Namespace: "debug",
			Version:   "1.0",
			Service:   NewPublicDebugAPI(apiBackend),
			Public:    true,
		}, {
			Namespace: "debug",
			Version:   "1.0",
			Service:   NewPrivateDebugAPI(apiBackend),
		}, {
			Namespace: "eth",
			Version:   "1.0",
			Service:   NewPublicAccountAPI(apiBackend.AccountManager()),
			Public:    true,
		}, {
			Namespace: "personal",
			Version:   "1.0",
			Service:   NewPrivateAccountAPI(apiBackend, nonceLock),
			Public:    false,
		}, {
			Namespace: "db",
			Version:   "1.0",
			Service:   NewPublicDBAPI(apiBackend),
			Public:    true,
		},
	}
}