github.com/arieschain/arieschain@v0.0.0-20191023063405-37c074544356/les/api_backend.go (about)

     1  package les
     2  
     3  import (
     4  	"context"
     5  	"math/big"
     6  
     7  	"github.com/quickchainproject/quickchain/accounts"
     8  	"github.com/quickchainproject/quickchain/common"
     9  	"github.com/quickchainproject/quickchain/common/math"
    10  	"github.com/quickchainproject/quickchain/core"
    11  	"github.com/quickchainproject/quickchain/core/bloombits"
    12  	"github.com/quickchainproject/quickchain/core/state"
    13  	"github.com/quickchainproject/quickchain/core/types"
    14  	"github.com/quickchainproject/quickchain/core/vm"
    15  	"github.com/quickchainproject/quickchain/qct/downloader"
    16  	"github.com/quickchainproject/quickchain/qct/gasprice"
    17  	"github.com/quickchainproject/quickchain/qctdb"
    18  	"github.com/quickchainproject/quickchain/event"
    19  	"github.com/quickchainproject/quickchain/light"
    20  	"github.com/quickchainproject/quickchain/params"
    21  	"github.com/quickchainproject/quickchain/rpc"
    22  )
    23  
    24  type LesApiBackend struct {
    25  	eth *LightEthereum
    26  	gpo *gasprice.Oracle
    27  }
    28  
    29  func (b *LesApiBackend) ChainConfig() *params.ChainConfig {
    30  	return b.eth.chainConfig
    31  }
    32  
    33  func (b *LesApiBackend) CurrentBlock() *types.Block {
    34  	return types.NewBlockWithHeader(b.eth.BlockChain().CurrentHeader())
    35  }
    36  
    37  func (b *LesApiBackend) SetHead(number uint64) {
    38  	b.eth.protocolManager.downloader.Cancel()
    39  	b.eth.blockchain.SetHead(number)
    40  }
    41  
    42  func (b *LesApiBackend) HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error) {
    43  	if blockNr == rpc.LatestBlockNumber || blockNr == rpc.PendingBlockNumber {
    44  		return b.eth.blockchain.CurrentHeader(), nil
    45  	}
    46  
    47  	return b.eth.blockchain.GetHeaderByNumberOdr(ctx, uint64(blockNr))
    48  }
    49  
    50  func (b *LesApiBackend) BlockByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Block, error) {
    51  	header, err := b.HeaderByNumber(ctx, blockNr)
    52  	if header == nil || err != nil {
    53  		return nil, err
    54  	}
    55  	return b.GetBlock(ctx, header.Hash())
    56  }
    57  
    58  func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
    59  	header, err := b.HeaderByNumber(ctx, blockNr)
    60  	if header == nil || err != nil {
    61  		return nil, nil, err
    62  	}
    63  	return light.NewState(ctx, header, b.eth.odr), header, nil
    64  }
    65  
    66  func (b *LesApiBackend) GetBlock(ctx context.Context, blockHash common.Hash) (*types.Block, error) {
    67  	return b.eth.blockchain.GetBlockByHash(ctx, blockHash)
    68  }
    69  
    70  func (b *LesApiBackend) GetReceipts(ctx context.Context, blockHash common.Hash) (types.Receipts, error) {
    71  	return light.GetBlockReceipts(ctx, b.eth.odr, blockHash, core.GetBlockNumber(b.eth.chainDb, blockHash))
    72  }
    73  
    74  func (b *LesApiBackend) GetLogs(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error) {
    75  	return light.GetBlockLogs(ctx, b.eth.odr, blockHash, core.GetBlockNumber(b.eth.chainDb, blockHash))
    76  }
    77  
    78  func (b *LesApiBackend) GetTd(blockHash common.Hash) *big.Int {
    79  	return b.eth.blockchain.GetTdByHash(blockHash)
    80  }
    81  
    82  func (b *LesApiBackend) GetEVM(ctx context.Context, msg core.Message, state *state.StateDB, header *types.Header, vmCfg vm.Config) (*vm.EVM, func() error, error) {
    83  	state.SetBalance(msg.From(), math.MaxBig256)
    84  	context := core.NewEVMContext(msg, header, b.eth.blockchain, nil)
    85  	return vm.NewEVM(context, state, b.eth.chainConfig, vmCfg), state.Error, nil
    86  }
    87  
    88  func (b *LesApiBackend) SendTx(ctx context.Context, signedTx *types.Transaction) error {
    89  	return b.eth.txPool.Add(ctx, signedTx)
    90  }
    91  
    92  func (b *LesApiBackend) RemoveTx(txHash common.Hash) {
    93  	b.eth.txPool.RemoveTx(txHash)
    94  }
    95  
    96  func (b *LesApiBackend) GetPoolTransactions() (types.Transactions, error) {
    97  	return b.eth.txPool.GetTransactions()
    98  }
    99  
   100  func (b *LesApiBackend) GetPoolTransaction(txHash common.Hash) *types.Transaction {
   101  	return b.eth.txPool.GetTransaction(txHash)
   102  }
   103  
   104  func (b *LesApiBackend) GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error) {
   105  	return b.eth.txPool.GetNonce(ctx, addr)
   106  }
   107  
   108  func (b *LesApiBackend) Stats() (pending int, queued int) {
   109  	return b.eth.txPool.Stats(), 0
   110  }
   111  
   112  func (b *LesApiBackend) TxPoolContent() (map[common.Address]types.Transactions, map[common.Address]types.Transactions) {
   113  	return b.eth.txPool.Content()
   114  }
   115  
   116  func (b *LesApiBackend) SubscribeTxPreEvent(ch chan<- core.TxPreEvent) event.Subscription {
   117  	return b.eth.txPool.SubscribeTxPreEvent(ch)
   118  }
   119  
   120  func (b *LesApiBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription {
   121  	return b.eth.blockchain.SubscribeChainEvent(ch)
   122  }
   123  
   124  func (b *LesApiBackend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription {
   125  	return b.eth.blockchain.SubscribeChainHeadEvent(ch)
   126  }
   127  
   128  func (b *LesApiBackend) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription {
   129  	return b.eth.blockchain.SubscribeChainSideEvent(ch)
   130  }
   131  
   132  func (b *LesApiBackend) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription {
   133  	return b.eth.blockchain.SubscribeLogsEvent(ch)
   134  }
   135  
   136  func (b *LesApiBackend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription {
   137  	return b.eth.blockchain.SubscribeRemovedLogsEvent(ch)
   138  }
   139  
   140  func (b *LesApiBackend) Downloader() *downloader.Downloader {
   141  	return b.eth.Downloader()
   142  }
   143  
   144  func (b *LesApiBackend) ProtocolVersion() int {
   145  	return b.eth.LesVersion() + 10000
   146  }
   147  
   148  func (b *LesApiBackend) SuggestPrice(ctx context.Context) (*big.Int, error) {
   149  	return b.gpo.SuggestPrice(ctx)
   150  }
   151  
   152  func (b *LesApiBackend) ChainDb() qctdb.Database {
   153  	return b.eth.chainDb
   154  }
   155  
   156  func (b *LesApiBackend) EventMux() *event.TypeMux {
   157  	return b.eth.eventMux
   158  }
   159  
   160  func (b *LesApiBackend) AccountManager() *accounts.Manager {
   161  	return b.eth.accountManager
   162  }
   163  
   164  func (b *LesApiBackend) BloomStatus() (uint64, uint64) {
   165  	if b.eth.bloomIndexer == nil {
   166  		return 0, 0
   167  	}
   168  	sections, _, _ := b.eth.bloomIndexer.Sections()
   169  	return light.BloomTrieFrequency, sections
   170  }
   171  
   172  func (b *LesApiBackend) ServiceFilter(ctx context.Context, session *bloombits.MatcherSession) {
   173  	for i := 0; i < bloomFilterThreads; i++ {
   174  		go session.Multiplex(bloomRetrievalBatch, bloomRetrievalWait, b.eth.bloomRequests)
   175  	}
   176  }