diff options
Diffstat (limited to 'lds/api_backend.go')
| -rw-r--r-- | lds/api_backend.go | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/lds/api_backend.go b/lds/api_backend.go new file mode 100644 index 000000000..7b4469bc5 --- /dev/null +++ b/lds/api_backend.go @@ -0,0 +1,211 @@ +// Copyright 2016 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 lds + +import ( + "context" + "math/big" + + "github.com/dexon-foundation/dexon/accounts" + "github.com/dexon-foundation/dexon/common" + "github.com/dexon-foundation/dexon/common/math" + "github.com/dexon-foundation/dexon/core" + "github.com/dexon-foundation/dexon/core/bloombits" + "github.com/dexon-foundation/dexon/core/rawdb" + "github.com/dexon-foundation/dexon/core/state" + "github.com/dexon-foundation/dexon/core/types" + "github.com/dexon-foundation/dexon/core/vm" + "github.com/dexon-foundation/dexon/eth/gasprice" + "github.com/dexon-foundation/dexon/ethdb" + "github.com/dexon-foundation/dexon/event" + "github.com/dexon-foundation/dexon/internal/ethapi" + "github.com/dexon-foundation/dexon/light" + "github.com/dexon-foundation/dexon/params" + "github.com/dexon-foundation/dexon/rpc" +) + +type LesApiBackend struct { + eth *LightEthereum + gpo *gasprice.Oracle +} + +func (b *LesApiBackend) ChainConfig() *params.ChainConfig { + return b.eth.chainConfig +} + +func (b *LesApiBackend) CurrentBlock() *types.Block { + return types.NewBlockWithHeader(b.eth.BlockChain().CurrentHeader()) +} + +func (b *LesApiBackend) SetHead(number uint64) { + b.eth.protocolManager.downloader.Cancel() + b.eth.blockchain.SetHead(number) +} + +func (b *LesApiBackend) HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error) { + if blockNr == rpc.LatestBlockNumber || blockNr == rpc.PendingBlockNumber { + return b.eth.blockchain.CurrentHeader(), nil + } + return b.eth.blockchain.GetHeaderByNumberOdr(ctx, uint64(blockNr)) +} + +func (b *LesApiBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) { + return b.eth.blockchain.GetHeaderByHash(hash), nil +} + +func (b *LesApiBackend) BlockByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Block, error) { + header, err := b.HeaderByNumber(ctx, blockNr) + if header == nil || err != nil { + return nil, err + } + return b.GetBlock(ctx, header.Hash()) +} + +func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*state.StateDB, *types.Header, error) { + header, err := b.HeaderByNumber(ctx, blockNr) + if header == nil || err != nil { + return nil, nil, err + } + return light.NewState(ctx, header, b.eth.odr), header, nil +} + +func (b *LesApiBackend) GetBlock(ctx context.Context, blockHash common.Hash) (*types.Block, error) { + return b.eth.blockchain.GetBlockByHash(ctx, blockHash) +} + +func (b *LesApiBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) { + if number := rawdb.ReadHeaderNumber(b.eth.chainDb, hash); number != nil { + return light.GetBlockReceipts(ctx, b.eth.odr, hash, *number) + } + return nil, nil +} + +func (b *LesApiBackend) GetLogs(ctx context.Context, hash common.Hash) ([][]*types.Log, error) { + if number := rawdb.ReadHeaderNumber(b.eth.chainDb, hash); number != nil { + return light.GetBlockLogs(ctx, b.eth.odr, hash, *number) + } + return nil, nil +} + +func (b *LesApiBackend) GetTd(hash common.Hash) *big.Int { + return b.eth.blockchain.GetTdByHash(hash) +} + +func (b *LesApiBackend) GetEVM(ctx context.Context, msg core.Message, state *state.StateDB, header *types.Header) (*vm.EVM, func() error, error) { + state.SetBalance(msg.From(), math.MaxBig256) + context := core.NewEVMContext(msg, header, b.eth.blockchain, nil) + return vm.NewEVM(context, state, b.eth.chainConfig, vm.Config{}), state.Error, nil +} + +func (b *LesApiBackend) SendTx(ctx context.Context, signedTx *types.Transaction) error { + return b.eth.txPool.Add(ctx, signedTx) +} + +func (b *LesApiBackend) SendTxs(ctx context.Context, signedTxs []*types.Transaction) []error { + b.eth.txPool.AddBatch(ctx, signedTxs) + return nil +} + +func (b *LesApiBackend) RemoveTx(txHash common.Hash) { + b.eth.txPool.RemoveTx(txHash) +} + +func (b *LesApiBackend) GetPoolTransactions() (types.Transactions, error) { + return b.eth.txPool.GetTransactions() +} + +func (b *LesApiBackend) GetPoolTransaction(txHash common.Hash) *types.Transaction { + return b.eth.txPool.GetTransaction(txHash) +} + +func (b *LesApiBackend) GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error) { + return b.eth.txPool.GetNonce(ctx, addr) +} + +func (b *LesApiBackend) Stats() (pending int, queued int) { + return b.eth.txPool.Stats(), 0 +} + +func (b *LesApiBackend) TxPoolContent() (map[common.Address]types.Transactions, map[common.Address]types.Transactions) { + return b.eth.txPool.Content() +} + +func (b *LesApiBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.Subscription { + return b.eth.txPool.SubscribeNewTxsEvent(ch) +} + +func (b *LesApiBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription { + return b.eth.blockchain.SubscribeChainEvent(ch) +} + +func (b *LesApiBackend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription { + return b.eth.blockchain.SubscribeChainHeadEvent(ch) +} + +func (b *LesApiBackend) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription { + return b.eth.blockchain.SubscribeChainSideEvent(ch) +} + +func (b *LesApiBackend) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription { + return b.eth.blockchain.SubscribeLogsEvent(ch) +} + +func (b *LesApiBackend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription { + return b.eth.blockchain.SubscribeRemovedLogsEvent(ch) +} + +func (b *LesApiBackend) Downloader() ethapi.Downloader { + return b.eth.Downloader() +} + +func (b *LesApiBackend) ProtocolVersion() int { + return b.eth.LesVersion() + 10000 +} + +func (b *LesApiBackend) SuggestPrice(ctx context.Context) (*big.Int, error) { + return b.gpo.SuggestPrice(ctx) +} + +func (b *LesApiBackend) ChainDb() ethdb.Database { + return b.eth.chainDb +} + +func (b *LesApiBackend) EventMux() *event.TypeMux { + return b.eth.eventMux +} + +func (b *LesApiBackend) AccountManager() *accounts.Manager { + return b.eth.accountManager +} + +func (b *LesApiBackend) RPCGasCap() *big.Int { + return b.eth.config.RPCGasCap +} + +func (b *LesApiBackend) BloomStatus() (uint64, uint64) { + if b.eth.bloomIndexer == nil { + return 0, 0 + } + sections, _, _ := b.eth.bloomIndexer.Sections() + return params.BloomBitsBlocksClient, sections +} + +func (b *LesApiBackend) ServiceFilter(ctx context.Context, session *bloombits.MatcherSession) { + for i := 0; i < bloomFilterThreads; i++ { + go session.Multiplex(bloomRetrievalBatch, bloomRetrievalWait, b.eth.bloomRequests) + } +} |