forked from cerc-io/plugeth
cmd, consensus/ethash, eth: miner push notifications
This commit is contained in:
parent
00e6da9704
commit
f0998415ba
@ -98,8 +98,9 @@ var (
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utils.MaxPendingPeersFlag,
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utils.EtherbaseFlag,
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utils.GasPriceFlag,
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utils.MinerThreadsFlag,
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utils.MiningEnabledFlag,
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utils.MinerThreadsFlag,
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utils.MinerNotifyFlag,
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utils.TargetGasLimitFlag,
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utils.NATFlag,
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utils.NoDiscoverFlag,
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@ -185,6 +185,7 @@ var AppHelpFlagGroups = []flagGroup{
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Flags: []cli.Flag{
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utils.MiningEnabledFlag,
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utils.MinerThreadsFlag,
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utils.MinerNotifyFlag,
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utils.EtherbaseFlag,
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utils.TargetGasLimitFlag,
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utils.GasPriceFlag,
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@ -24,7 +24,6 @@ import (
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"math/big"
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"os"
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"path/filepath"
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"runtime"
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"strconv"
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"strings"
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"time"
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@ -318,9 +317,13 @@ var (
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Usage: "Enable mining",
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}
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MinerThreadsFlag = cli.IntFlag{
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Name: "minerthreads",
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Name: "miner.threads",
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Usage: "Number of CPU threads to use for mining",
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Value: runtime.NumCPU(),
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Value: 0,
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}
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MinerNotifyFlag = cli.StringFlag{
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Name: "miner.notify",
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Usage: "Comma separated HTTP URL list to notify of new work packages",
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}
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TargetGasLimitFlag = cli.Uint64Flag{
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Name: "targetgaslimit",
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@ -1093,6 +1096,9 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *eth.Config) {
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if ctx.GlobalIsSet(MinerThreadsFlag.Name) {
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cfg.MinerThreads = ctx.GlobalInt(MinerThreadsFlag.Name)
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}
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if ctx.GlobalIsSet(MinerNotifyFlag.Name) {
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cfg.MinerNotify = strings.Split(ctx.GlobalString(MinerNotifyFlag.Name), ",")
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}
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if ctx.GlobalIsSet(DocRootFlag.Name) {
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cfg.DocRoot = ctx.GlobalString(DocRootFlag.Name)
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}
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@ -1293,7 +1299,7 @@ func MakeChain(ctx *cli.Context, stack *node.Node) (chain *core.BlockChain, chai
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DatasetDir: stack.ResolvePath(eth.DefaultConfig.Ethash.DatasetDir),
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DatasetsInMem: eth.DefaultConfig.Ethash.DatasetsInMem,
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DatasetsOnDisk: eth.DefaultConfig.Ethash.DatasetsOnDisk,
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})
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}, nil)
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}
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}
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if gcmode := ctx.GlobalString(GCModeFlag.Name); gcmode != "full" && gcmode != "archive" {
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@ -729,7 +729,7 @@ func TestConcurrentDiskCacheGeneration(t *testing.T) {
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go func(idx int) {
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defer pend.Done()
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ethash := New(Config{cachedir, 0, 1, "", 0, 0, ModeNormal})
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ethash := New(Config{cachedir, 0, 1, "", 0, 0, ModeNormal}, nil)
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defer ethash.Close()
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if err := ethash.VerifySeal(nil, block.Header()); err != nil {
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t.Errorf("proc %d: block verification failed: %v", idx, err)
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@ -493,7 +493,7 @@ func (ethash *Ethash) VerifySeal(chain consensus.ChainReader, header *types.Head
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if !bytes.Equal(header.MixDigest[:], digest) {
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return errInvalidMixDigest
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}
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target := new(big.Int).Div(maxUint256, header.Difficulty)
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target := new(big.Int).Div(two256, header.Difficulty)
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if new(big.Int).SetBytes(result).Cmp(target) > 0 {
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return errInvalidPoW
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}
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@ -45,11 +45,11 @@ import (
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var ErrInvalidDumpMagic = errors.New("invalid dump magic")
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var (
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// maxUint256 is a big integer representing 2^256-1
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maxUint256 = new(big.Int).Exp(big.NewInt(2), big.NewInt(256), big.NewInt(0))
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// two256 is a big integer representing 2^256
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two256 = new(big.Int).Exp(big.NewInt(2), big.NewInt(256), big.NewInt(0))
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// sharedEthash is a full instance that can be shared between multiple users.
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sharedEthash = New(Config{"", 3, 0, "", 1, 0, ModeNormal})
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sharedEthash = New(Config{"", 3, 0, "", 1, 0, ModeNormal}, nil)
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// algorithmRevision is the data structure version used for file naming.
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algorithmRevision = 23
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@ -447,8 +447,10 @@ type Ethash struct {
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exitCh chan chan error // Notification channel to exiting backend threads
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}
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// New creates a full sized ethash PoW scheme and starts a background thread for remote mining.
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func New(config Config) *Ethash {
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// New creates a full sized ethash PoW scheme and starts a background thread for
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// remote mining, also optionally notifying a batch of remote services of new work
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// packages.
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func New(config Config, notify []string) *Ethash {
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if config.CachesInMem <= 0 {
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log.Warn("One ethash cache must always be in memory", "requested", config.CachesInMem)
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config.CachesInMem = 1
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@ -473,13 +475,13 @@ func New(config Config) *Ethash {
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submitRateCh: make(chan *hashrate),
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exitCh: make(chan chan error),
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}
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go ethash.remote()
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go ethash.remote(notify)
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return ethash
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}
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// NewTester creates a small sized ethash PoW scheme useful only for testing
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// purposes.
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func NewTester() *Ethash {
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func NewTester(notify []string) *Ethash {
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ethash := &Ethash{
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config: Config{PowMode: ModeTest},
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caches: newlru("cache", 1, newCache),
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@ -494,7 +496,7 @@ func NewTester() *Ethash {
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submitRateCh: make(chan *hashrate),
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exitCh: make(chan chan error),
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}
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go ethash.remote()
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go ethash.remote(notify)
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return ethash
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}
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@ -32,17 +32,18 @@ import (
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// Tests that ethash works correctly in test mode.
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func TestTestMode(t *testing.T) {
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head := &types.Header{Number: big.NewInt(1), Difficulty: big.NewInt(100)}
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header := &types.Header{Number: big.NewInt(1), Difficulty: big.NewInt(100)}
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ethash := NewTester()
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ethash := NewTester(nil)
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defer ethash.Close()
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block, err := ethash.Seal(nil, types.NewBlockWithHeader(head), nil)
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block, err := ethash.Seal(nil, types.NewBlockWithHeader(header), nil)
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if err != nil {
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t.Fatalf("failed to seal block: %v", err)
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}
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head.Nonce = types.EncodeNonce(block.Nonce())
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head.MixDigest = block.MixDigest()
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if err := ethash.VerifySeal(nil, head); err != nil {
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header.Nonce = types.EncodeNonce(block.Nonce())
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header.MixDigest = block.MixDigest()
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if err := ethash.VerifySeal(nil, header); err != nil {
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t.Fatalf("unexpected verification error: %v", err)
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}
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}
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@ -55,7 +56,7 @@ func TestCacheFileEvict(t *testing.T) {
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t.Fatal(err)
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}
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defer os.RemoveAll(tmpdir)
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e := New(Config{CachesInMem: 3, CachesOnDisk: 10, CacheDir: tmpdir, PowMode: ModeTest})
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e := New(Config{CachesInMem: 3, CachesOnDisk: 10, CacheDir: tmpdir, PowMode: ModeTest}, nil)
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defer e.Close()
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workers := 8
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@ -78,21 +79,21 @@ func verifyTest(wg *sync.WaitGroup, e *Ethash, workerIndex, epochs int) {
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if block < 0 {
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block = 0
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}
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head := &types.Header{Number: big.NewInt(block), Difficulty: big.NewInt(100)}
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e.VerifySeal(nil, head)
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header := &types.Header{Number: big.NewInt(block), Difficulty: big.NewInt(100)}
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e.VerifySeal(nil, header)
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}
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}
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func TestRemoteSealer(t *testing.T) {
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ethash := NewTester()
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ethash := NewTester(nil)
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defer ethash.Close()
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api := &API{ethash}
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if _, err := api.GetWork(); err != errNoMiningWork {
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t.Error("expect to return an error indicate there is no mining work")
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}
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head := &types.Header{Number: big.NewInt(1), Difficulty: big.NewInt(100)}
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block := types.NewBlockWithHeader(head)
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header := &types.Header{Number: big.NewInt(1), Difficulty: big.NewInt(100)}
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block := types.NewBlockWithHeader(header)
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// Push new work.
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ethash.Seal(nil, block, nil)
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@ -108,16 +109,14 @@ func TestRemoteSealer(t *testing.T) {
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if res := api.SubmitWork(types.BlockNonce{}, block.HashNoNonce(), common.Hash{}); res {
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t.Error("expect to return false when submit a fake solution")
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}
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// Push new block with same block number to replace the original one.
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head = &types.Header{Number: big.NewInt(1), Difficulty: big.NewInt(1000)}
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block = types.NewBlockWithHeader(head)
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header = &types.Header{Number: big.NewInt(1), Difficulty: big.NewInt(1000)}
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block = types.NewBlockWithHeader(header)
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ethash.Seal(nil, block, nil)
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if work, err = api.GetWork(); err != nil || work[0] != block.HashNoNonce().Hex() {
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t.Error("expect to return the latest pushed work")
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}
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// Push block with higher block number.
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newHead := &types.Header{Number: big.NewInt(2), Difficulty: big.NewInt(100)}
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newBlock := types.NewBlockWithHeader(newHead)
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@ -130,19 +129,18 @@ func TestRemoteSealer(t *testing.T) {
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func TestHashRate(t *testing.T) {
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var (
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ethash = NewTester()
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api = &API{ethash}
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hashrate = []hexutil.Uint64{100, 200, 300}
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expect uint64
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ids = []common.Hash{common.HexToHash("a"), common.HexToHash("b"), common.HexToHash("c")}
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)
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ethash := NewTester(nil)
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defer ethash.Close()
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if tot := ethash.Hashrate(); tot != 0 {
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t.Error("expect the result should be zero")
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}
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api := &API{ethash}
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for i := 0; i < len(hashrate); i += 1 {
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if res := api.SubmitHashRate(hashrate[i], ids[i]); !res {
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t.Error("remote miner submit hashrate failed")
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@ -155,9 +153,8 @@ func TestHashRate(t *testing.T) {
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}
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func TestClosedRemoteSealer(t *testing.T) {
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ethash := NewTester()
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// Make sure exit channel has been listened
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time.Sleep(1 * time.Second)
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ethash := NewTester(nil)
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time.Sleep(1 * time.Second) // ensure exit channel is listening
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ethash.Close()
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api := &API{ethash}
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@ -17,11 +17,14 @@
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package ethash
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import (
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"bytes"
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crand "crypto/rand"
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"encoding/json"
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"errors"
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"math"
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"math/big"
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"math/rand"
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"net/http"
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"runtime"
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"sync"
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"time"
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@ -109,7 +112,7 @@ func (ethash *Ethash) mine(block *types.Block, id int, seed uint64, abort chan s
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var (
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header = block.Header()
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hash = header.HashNoNonce().Bytes()
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target = new(big.Int).Div(maxUint256, header.Difficulty)
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target = new(big.Int).Div(two256, header.Difficulty)
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number = header.Number.Uint64()
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dataset = ethash.dataset(number)
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)
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@ -161,40 +164,65 @@ search:
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runtime.KeepAlive(dataset)
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}
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// remote starts a standalone goroutine to handle remote mining related stuff.
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func (ethash *Ethash) remote() {
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// remote is a standalone goroutine to handle remote mining related stuff.
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func (ethash *Ethash) remote(notify []string) {
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var (
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works = make(map[common.Hash]*types.Block)
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rates = make(map[common.Hash]hashrate)
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currentWork *types.Block
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)
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works = make(map[common.Hash]*types.Block)
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rates = make(map[common.Hash]hashrate)
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// getWork returns a work package for external miner.
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currentBlock *types.Block
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currentWork [3]string
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notifyTransport = &http.Transport{}
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notifyClient = &http.Client{
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Transport: notifyTransport,
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Timeout: time.Second,
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}
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notifyReqs = make([]*http.Request, len(notify))
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)
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// notifyWork notifies all the specified mining endpoints of the availability of
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// new work to be processed.
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notifyWork := func() {
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work := currentWork
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blob, _ := json.Marshal(work)
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for i, url := range notify {
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// Terminate any previously pending request and create the new work
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if notifyReqs[i] != nil {
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notifyTransport.CancelRequest(notifyReqs[i])
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}
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notifyReqs[i], _ = http.NewRequest("POST", url, bytes.NewReader(blob))
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notifyReqs[i].Header.Set("Content-Type", "application/json")
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// Push the new work concurrently to all the remote nodes
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go func(req *http.Request, url string) {
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res, err := notifyClient.Do(req)
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if err != nil {
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log.Warn("Failed to notify remote miner", "err", err)
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} else {
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log.Trace("Notified remote miner", "miner", url, "hash", log.Lazy{Fn: func() common.Hash { return common.HexToHash(work[0]) }}, "target", work[2])
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res.Body.Close()
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}
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}(notifyReqs[i], url)
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}
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}
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// makeWork creates a work package for external miner.
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//
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// The work package consists of 3 strings:
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// result[0], 32 bytes hex encoded current block header pow-hash
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// result[1], 32 bytes hex encoded seed hash used for DAG
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// result[2], 32 bytes hex encoded boundary condition ("target"), 2^256/difficulty
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getWork := func() ([3]string, error) {
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var res [3]string
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if currentWork == nil {
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return res, errNoMiningWork
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}
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res[0] = currentWork.HashNoNonce().Hex()
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res[1] = common.BytesToHash(SeedHash(currentWork.NumberU64())).Hex()
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makeWork := func(block *types.Block) {
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hash := block.HashNoNonce()
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// Calculate the "target" to be returned to the external sealer.
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n := big.NewInt(1)
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n.Lsh(n, 255)
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n.Div(n, currentWork.Difficulty())
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n.Lsh(n, 1)
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res[2] = common.BytesToHash(n.Bytes()).Hex()
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currentWork[0] = hash.Hex()
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currentWork[1] = common.BytesToHash(SeedHash(block.NumberU64())).Hex()
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currentWork[2] = common.BytesToHash(new(big.Int).Div(two256, block.Difficulty()).Bytes()).Hex()
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// Trace the seal work fetched by remote sealer.
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works[currentWork.HashNoNonce()] = currentWork
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return res, nil
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currentBlock = block
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works[hash] = block
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}
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// submitWork verifies the submitted pow solution, returning
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// whether the solution was accepted or not (not can be both a bad pow as well as
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// any other error, like no pending work or stale mining result).
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@ -238,21 +266,23 @@ func (ethash *Ethash) remote() {
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for {
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select {
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case block := <-ethash.workCh:
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if currentWork != nil && block.ParentHash() != currentWork.ParentHash() {
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if currentBlock != nil && block.ParentHash() != currentBlock.ParentHash() {
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// Start new round mining, throw out all previous work.
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works = make(map[common.Hash]*types.Block)
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}
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// Update current work with new received block.
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// Note same work can be past twice, happens when changing CPU threads.
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currentWork = block
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makeWork(block)
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// Notify and requested URLs of the new work availability
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notifyWork()
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case work := <-ethash.fetchWorkCh:
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// Return current mining work to remote miner.
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miningWork, err := getWork()
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if err != nil {
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work.errc <- err
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if currentBlock == nil {
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work.errc <- errNoMiningWork
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} else {
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work.res <- miningWork
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work.res <- currentWork
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}
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case result := <-ethash.submitWorkCh:
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|
115
consensus/ethash/sealer_test.go
Normal file
115
consensus/ethash/sealer_test.go
Normal file
@ -0,0 +1,115 @@
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package ethash
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import (
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"encoding/json"
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"io/ioutil"
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"math/big"
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"net"
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"net/http"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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)
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// Tests whether remote HTTP servers are correctly notified of new work.
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func TestRemoteNotify(t *testing.T) {
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// Start a simple webserver to capture notifications
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sink := make(chan [3]string)
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server := &http.Server{
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Handler: http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
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blob, err := ioutil.ReadAll(req.Body)
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if err != nil {
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t.Fatalf("failed to read miner notification: %v", err)
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}
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var work [3]string
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if err := json.Unmarshal(blob, &work); err != nil {
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t.Fatalf("failed to unmarshal miner notification: %v", err)
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}
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sink <- work
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}),
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}
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// Open a custom listener to extract its local address
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listener, err := net.Listen("tcp", "localhost:0")
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if err != nil {
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t.Fatalf("failed to open notification server: %v", err)
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}
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defer listener.Close()
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go server.Serve(listener)
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// Create the custom ethash engine
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ethash := NewTester([]string{"http://" + listener.Addr().String()})
|
||||
defer ethash.Close()
|
||||
|
||||
// Stream a work task and ensure the notification bubbles out
|
||||
header := &types.Header{Number: big.NewInt(1), Difficulty: big.NewInt(100)}
|
||||
block := types.NewBlockWithHeader(header)
|
||||
|
||||
ethash.Seal(nil, block, nil)
|
||||
select {
|
||||
case work := <-sink:
|
||||
if want := header.HashNoNonce().Hex(); work[0] != want {
|
||||
t.Errorf("work packet hash mismatch: have %s, want %s", work[0], want)
|
||||
}
|
||||
if want := common.BytesToHash(SeedHash(header.Number.Uint64())).Hex(); work[1] != want {
|
||||
t.Errorf("work packet seed mismatch: have %s, want %s", work[1], want)
|
||||
}
|
||||
target := new(big.Int).Div(new(big.Int).Lsh(big.NewInt(1), 256), header.Difficulty)
|
||||
if want := common.BytesToHash(target.Bytes()).Hex(); work[2] != want {
|
||||
t.Errorf("work packet target mismatch: have %s, want %s", work[2], want)
|
||||
}
|
||||
case <-time.After(time.Second):
|
||||
t.Fatalf("notification timed out")
|
||||
}
|
||||
}
|
||||
|
||||
// Tests that pushing work packages fast to the miner doesn't cause any daa race
|
||||
// issues in the notifications.
|
||||
func TestRemoteMultiNotify(t *testing.T) {
|
||||
// Start a simple webserver to capture notifications
|
||||
sink := make(chan [3]string, 1024)
|
||||
|
||||
server := &http.Server{
|
||||
Handler: http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
|
||||
blob, err := ioutil.ReadAll(req.Body)
|
||||
if err != nil {
|
||||
t.Fatalf("failed to read miner notification: %v", err)
|
||||
}
|
||||
var work [3]string
|
||||
if err := json.Unmarshal(blob, &work); err != nil {
|
||||
t.Fatalf("failed to unmarshal miner notification: %v", err)
|
||||
}
|
||||
sink <- work
|
||||
}),
|
||||
}
|
||||
// Open a custom listener to extract its local address
|
||||
listener, err := net.Listen("tcp", "localhost:0")
|
||||
if err != nil {
|
||||
t.Fatalf("failed to open notification server: %v", err)
|
||||
}
|
||||
defer listener.Close()
|
||||
|
||||
go server.Serve(listener)
|
||||
|
||||
// Create the custom ethash engine
|
||||
ethash := NewTester([]string{"http://" + listener.Addr().String()})
|
||||
defer ethash.Close()
|
||||
|
||||
// Stream a lot of work task and ensure all the notifications bubble out
|
||||
for i := 0; i < cap(sink); i++ {
|
||||
header := &types.Header{Number: big.NewInt(int64(i)), Difficulty: big.NewInt(100)}
|
||||
block := types.NewBlockWithHeader(header)
|
||||
|
||||
ethash.Seal(nil, block, nil)
|
||||
}
|
||||
for i := 0; i < cap(sink); i++ {
|
||||
select {
|
||||
case <-sink:
|
||||
case <-time.After(250 * time.Millisecond):
|
||||
t.Fatalf("notification %d timed out", i)
|
||||
}
|
||||
}
|
||||
}
|
@ -124,7 +124,7 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
|
||||
chainConfig: chainConfig,
|
||||
eventMux: ctx.EventMux,
|
||||
accountManager: ctx.AccountManager,
|
||||
engine: CreateConsensusEngine(ctx, &config.Ethash, chainConfig, chainDb),
|
||||
engine: CreateConsensusEngine(ctx, chainConfig, &config.Ethash, config.MinerNotify, chainDb),
|
||||
shutdownChan: make(chan bool),
|
||||
networkID: config.NetworkId,
|
||||
gasPrice: config.GasPrice,
|
||||
@ -210,7 +210,7 @@ func CreateDB(ctx *node.ServiceContext, config *Config, name string) (ethdb.Data
|
||||
}
|
||||
|
||||
// CreateConsensusEngine creates the required type of consensus engine instance for an Ethereum service
|
||||
func CreateConsensusEngine(ctx *node.ServiceContext, config *ethash.Config, chainConfig *params.ChainConfig, db ethdb.Database) consensus.Engine {
|
||||
func CreateConsensusEngine(ctx *node.ServiceContext, chainConfig *params.ChainConfig, config *ethash.Config, notify []string, db ethdb.Database) consensus.Engine {
|
||||
// If proof-of-authority is requested, set it up
|
||||
if chainConfig.Clique != nil {
|
||||
return clique.New(chainConfig.Clique, db)
|
||||
@ -222,7 +222,7 @@ func CreateConsensusEngine(ctx *node.ServiceContext, config *ethash.Config, chai
|
||||
return ethash.NewFaker()
|
||||
case ethash.ModeTest:
|
||||
log.Warn("Ethash used in test mode")
|
||||
return ethash.NewTester()
|
||||
return ethash.NewTester(nil)
|
||||
case ethash.ModeShared:
|
||||
log.Warn("Ethash used in shared mode")
|
||||
return ethash.NewShared()
|
||||
@ -234,7 +234,7 @@ func CreateConsensusEngine(ctx *node.ServiceContext, config *ethash.Config, chai
|
||||
DatasetDir: config.DatasetDir,
|
||||
DatasetsInMem: config.DatasetsInMem,
|
||||
DatasetsOnDisk: config.DatasetsOnDisk,
|
||||
})
|
||||
}, notify)
|
||||
engine.SetThreads(-1) // Disable CPU mining
|
||||
return engine
|
||||
}
|
||||
|
@ -97,6 +97,7 @@ type Config struct {
|
||||
// Mining-related options
|
||||
Etherbase common.Address `toml:",omitempty"`
|
||||
MinerThreads int `toml:",omitempty"`
|
||||
MinerNotify []string `toml:",omitempty"`
|
||||
ExtraData []byte `toml:",omitempty"`
|
||||
GasPrice *big.Int
|
||||
|
||||
|
@ -102,7 +102,7 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) {
|
||||
peers: peers,
|
||||
reqDist: newRequestDistributor(peers, quitSync),
|
||||
accountManager: ctx.AccountManager,
|
||||
engine: eth.CreateConsensusEngine(ctx, &config.Ethash, chainConfig, chainDb),
|
||||
engine: eth.CreateConsensusEngine(ctx, chainConfig, &config.Ethash, nil, chainDb),
|
||||
shutdownChan: make(chan bool),
|
||||
networkId: config.NetworkId,
|
||||
bloomRequests: make(chan chan *bloombits.Retrieval),
|
||||
|
Loading…
Reference in New Issue
Block a user