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authorDeterminant <[email protected]>2019-08-12 18:10:03 -0400
committerDeterminant <[email protected]>2019-08-12 18:10:03 -0400
commitbc9539a1b60dc80946bc867681eb32ecae4f0d66 (patch)
tree0d691d52fecd2e3a52482d3420310e12aec95580 /coreth.go
parentfd39e6b30af5d855dce23899394e6ef80a2c0a41 (diff)
make the basic demo work
Diffstat (limited to 'coreth.go')
-rw-r--r--coreth.go245
1 files changed, 5 insertions, 240 deletions
diff --git a/coreth.go b/coreth.go
index ec60ce6..74aabcb 100644
--- a/coreth.go
+++ b/coreth.go
@@ -1,26 +1,14 @@
package coreth
import (
- "math/big"
- "fmt"
- "time"
- "errors"
- "runtime"
"io"
"crypto/ecdsa"
- "golang.org/x/crypto/sha3"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/common"
//"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/event"
- "github.com/ethereum/go-ethereum/params"
- "github.com/ethereum/go-ethereum/consensus"
- "github.com/ethereum/go-ethereum/core/state"
- "github.com/Determinant/coreth/miner"
"github.com/Determinant/coreth/eth"
- "github.com/ethereum/go-ethereum/rlp"
- "github.com/ethereum/go-ethereum/rpc"
"github.com/Determinant/coreth/node"
"github.com/ethereum/go-ethereum/crypto"
)
@@ -30,262 +18,39 @@ type Block = types.Block
type Hash = common.Hash
type ETHChain struct {
- mux *event.TypeMux
backend *eth.Ethereum
- worker *miner.Worker
}
-type DummyEngine struct {
-}
-
-var (
- allowedFutureBlockTime = 15 * time.Second // Max time from current time allowed for blocks, before they're considered future blocks
-)
-
-var (
- errZeroBlockTime = errors.New("timestamp equals parent's")
-)
-
-// modified from consensus.go
-func (self *DummyEngine) verifyHeader(chain consensus.ChainReader, header, parent *types.Header, uncle bool, seal bool) error {
- // Ensure that the header's extra-data section is of a reasonable size
- if uint64(len(header.Extra)) > params.MaximumExtraDataSize {
- return fmt.Errorf("extra-data too long: %d > %d", len(header.Extra), params.MaximumExtraDataSize)
- }
- // Verify the header's timestamp
- if !uncle {
- if header.Time > uint64(time.Now().Add(allowedFutureBlockTime).Unix()) {
- return consensus.ErrFutureBlock
- }
- }
- if header.Time <= parent.Time {
- return errZeroBlockTime
- }
- // Verify that the gas limit is <= 2^63-1
- cap := uint64(0x7fffffffffffffff)
- if header.GasLimit > cap {
- return fmt.Errorf("invalid gasLimit: have %v, max %v", header.GasLimit, cap)
- }
- // Verify that the gasUsed is <= gasLimit
- if header.GasUsed > header.GasLimit {
- return fmt.Errorf("invalid gasUsed: have %d, gasLimit %d", header.GasUsed, header.GasLimit)
- }
- // Verify that the gas limit remains within allowed bounds
- diff := int64(parent.GasLimit) - int64(header.GasLimit)
- if diff < 0 {
- diff *= -1
- }
- limit := parent.GasLimit / params.GasLimitBoundDivisor
-
- if uint64(diff) >= limit || header.GasLimit < params.MinGasLimit {
- return fmt.Errorf("invalid gas limit: have %d, want %d += %d", header.GasLimit, parent.GasLimit, limit)
- }
- // Verify that the block number is parent's +1
- if diff := new(big.Int).Sub(header.Number, parent.Number); diff.Cmp(big.NewInt(1)) != 0 {
- return consensus.ErrInvalidNumber
- }
- // Verify the engine specific seal securing the block
- if seal {
- if err := self.VerifySeal(chain, header); err != nil {
- return err
- }
- }
- return nil
-}
-
-func (self *DummyEngine) verifyHeaderWorker(chain consensus.ChainReader, headers []*types.Header, seals []bool, index int) error {
- var parent *types.Header
- if index == 0 {
- parent = chain.GetHeader(headers[0].ParentHash, headers[0].Number.Uint64()-1)
- } else if headers[index-1].Hash() == headers[index].ParentHash {
- parent = headers[index-1]
- }
- if parent == nil {
- return consensus.ErrUnknownAncestor
- }
- if chain.GetHeader(headers[index].Hash(), headers[index].Number.Uint64()) != nil {
- return nil // known block
- }
- return self.verifyHeader(chain, headers[index], parent, false, seals[index])
-}
-
-func (self *DummyEngine) Author(header *types.Header) (common.Address, error) {
- addr := common.Address{}
- return addr, nil
-}
-
-func (self *DummyEngine) VerifyHeader(chain consensus.ChainReader, header *types.Header, seal bool) error {
- // Short circuit if the header is known, or it's parent not
- number := header.Number.Uint64()
- if chain.GetHeader(header.Hash(), number) != nil {
- return nil
- }
- parent := chain.GetHeader(header.ParentHash, number-1)
- if parent == nil {
- return consensus.ErrUnknownAncestor
- }
- // Sanity checks passed, do a proper verification
- return self.verifyHeader(chain, header, parent, false, seal)
-}
-
-func (self *DummyEngine) VerifyHeaders(chain consensus.ChainReader, headers []*types.Header, seals []bool) (chan<- struct{}, <-chan error) {
- // Spawn as many workers as allowed threads
- workers := runtime.GOMAXPROCS(0)
- if len(headers) < workers {
- workers = len(headers)
- }
-
- // Create a task channel and spawn the verifiers
- var (
- inputs = make(chan int)
- done = make(chan int, workers)
- errors = make([]error, len(headers))
- abort = make(chan struct{})
- )
- for i := 0; i < workers; i++ {
- go func() {
- for index := range inputs {
- errors[index] = self.verifyHeaderWorker(chain, headers, seals, index)
- done <- index
- }
- }()
- }
-
- errorsOut := make(chan error, len(headers))
- go func() {
- defer close(inputs)
- var (
- in, out = 0, 0
- checked = make([]bool, len(headers))
- inputs = inputs
- )
- for {
- select {
- case inputs <- in:
- if in++; in == len(headers) {
- // Reached end of headers. Stop sending to workers.
- inputs = nil
- }
- case index := <-done:
- for checked[index] = true; checked[out]; out++ {
- errorsOut <- errors[out]
- if out == len(headers)-1 {
- return
- }
- }
- case <-abort:
- return
- }
- }
- }()
- return abort, errorsOut
-}
-
-func (self *DummyEngine) VerifyUncles(chain consensus.ChainReader, block *types.Block) error {
- return nil
-}
-
-func (self *DummyEngine) VerifySeal(chain consensus.ChainReader, header *types.Header) error {
- return nil
-}
-
-func (self *DummyEngine) Prepare(chain consensus.ChainReader, header *types.Header) error {
- header.Difficulty = big.NewInt(0)
- return nil
-}
-
-func (self *DummyEngine) Finalize(chain consensus.ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction,
-uncles []*types.Header) {
- // commit the final state root
- header.Root = state.IntermediateRoot(chain.Config().IsEIP158(header.Number))
-}
-
-func (self *DummyEngine) FinalizeAndAssemble(chain consensus.ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction,
-uncles []*types.Header, receipts []*types.Receipt) (*types.Block, error) {
- // commit the final state root
- header.Root = state.IntermediateRoot(chain.Config().IsEIP158(header.Number))
-
- // Header seems complete, assemble into a block and return
- return types.NewBlock(header, txs, uncles, receipts), nil
-}
-
-func (self *DummyEngine) Seal(chain consensus.ChainReader, block *types.Block, results chan<- *types.Block, stop <-chan struct{}) error {
- time.Sleep(1000 * time.Millisecond)
- fmt.Printf("sealed %s\n", block.ParentHash().String())
- results <- block
- return nil
-}
-
-func (self *DummyEngine) SealHash(header *types.Header) (hash common.Hash) {
- hasher := sha3.NewLegacyKeccak256()
-
- rlp.Encode(hasher, []interface{}{
- header.ParentHash,
- header.UncleHash,
- header.Coinbase,
- header.Root,
- header.TxHash,
- header.ReceiptHash,
- header.Bloom,
- header.Difficulty,
- header.Number,
- header.GasLimit,
- header.GasUsed,
- header.Time,
- header.Extra,
- })
- hasher.Sum(hash[:0])
- return hash
-}
-
-func (self *DummyEngine) CalcDifficulty(chain consensus.ChainReader, time uint64, parent *types.Header) *big.Int {
- return big.NewInt(0)
-}
-
-func (self *DummyEngine) APIs(chain consensus.ChainReader) []rpc.API {
- return nil
-}
-
-func (self *DummyEngine) Close() error {
- return nil
-}
func isLocalBlock(block *types.Block) bool {
return false
}
-func NewETHChain(config *eth.Config, chainConfig *params.ChainConfig, etherBase *common.Address) *ETHChain {
+func NewETHChain(config *eth.Config, etherBase *common.Address) *ETHChain {
if config == nil {
config = &eth.DefaultConfig
}
- if chainConfig == nil {
- chainConfig = params.MainnetChainConfig
- }
mux := new(event.TypeMux)
ctx := node.NewServiceContext(mux)
backend, _ := eth.New(&ctx, config)
- chain := &ETHChain {
- mux: mux,
- backend: backend,
- worker: miner.NewWorker(&config.Miner, chainConfig, &DummyEngine{}, backend, mux, isLocalBlock),
- }
+ chain := &ETHChain { backend: backend }
if etherBase == nil {
etherBase = &common.Address{
1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
}
}
- chain.worker.SetEtherbase(*etherBase)
+ backend.SetEtherbase(*etherBase)
return chain
}
func (self *ETHChain) Start() {
- self.worker.Start()
+ self.backend.StartMining(0)
}
func (self *ETHChain) Stop() {
- self.worker.Stop()
+ self.backend.Stop()
}
func (self *ETHChain) AddRemoteTxs(txs []*types.Transaction) []error {