mirror of
https://github.com/ethereum/go-ethereum.git
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d55229677d
* verify header including validator * re-structure v1 v2 tests * remove unused test function * add test to check coinbase and validator address matches * refactor engine v2 to group private functions into same file
99 lines
3.7 KiB
Go
99 lines
3.7 KiB
Go
package engine_v2
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import (
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"fmt"
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"github.com/XinFinOrg/XDPoSChain/common"
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"github.com/XinFinOrg/XDPoSChain/consensus"
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"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS/utils"
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"github.com/XinFinOrg/XDPoSChain/core/types"
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"github.com/XinFinOrg/XDPoSChain/log"
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)
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// get epoch switch of the previous `limit` epoch
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func (x *XDPoS_v2) getPreviousEpochSwitchInfoByHash(chain consensus.ChainReader, hash common.Hash, limit int) (*utils.EpochSwitchInfo, error) {
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epochSwitchInfo, err := x.getEpochSwitchInfo(chain, nil, hash)
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if err != nil {
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log.Error("[getPreviousEpochSwitchInfoByHash] Adaptor v2 getEpochSwitchInfo has error, potentially bug", "err", err)
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return nil, err
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}
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for i := 0; i < limit; i++ {
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epochSwitchInfo, err = x.getEpochSwitchInfo(chain, nil, epochSwitchInfo.EpochSwitchParentBlockInfo.Hash)
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if err != nil {
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log.Error("[getPreviousEpochSwitchInfoByHash] Adaptor v2 getEpochSwitchInfo has error, potentially bug", "err", err)
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return nil, err
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}
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}
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return epochSwitchInfo, nil
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}
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// Given header and its hash, get epoch switch info from the epoch switch block of that epoch,
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// header is allow to be nil.
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func (x *XDPoS_v2) getEpochSwitchInfo(chain consensus.ChainReader, header *types.Header, hash common.Hash) (*utils.EpochSwitchInfo, error) {
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e, ok := x.epochSwitches.Get(hash)
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if ok {
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log.Debug("[getEpochSwitchInfo] cache hit", "hash", hash.Hex())
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epochSwitchInfo := e.(*utils.EpochSwitchInfo)
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return epochSwitchInfo, nil
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}
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h := header
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if h == nil {
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log.Debug("[getEpochSwitchInfo] header missing, get header", "hash", hash.Hex())
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h = chain.GetHeaderByHash(hash)
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if h == nil {
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log.Warn("[getEpochSwitchInfo] can not find header from db", "hash", hash.Hex())
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return nil, fmt.Errorf("[getEpochSwitchInfo] can not find header from db hash %v", hash.Hex())
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}
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}
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isEpochSwitch, _, err := x.IsEpochSwitch(h)
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if err != nil {
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return nil, err
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}
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if isEpochSwitch {
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log.Debug("[getEpochSwitchInfo] header is epoch switch", "hash", hash.Hex(), "number", h.Number.Uint64())
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quorumCert, round, masternodes, err := x.getExtraFields(h)
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if err != nil {
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return nil, err
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}
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epochSwitchInfo := &utils.EpochSwitchInfo{
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Masternodes: masternodes,
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EpochSwitchBlockInfo: &utils.BlockInfo{
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Hash: hash,
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Number: h.Number,
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Round: round,
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},
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}
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if quorumCert != nil {
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epochSwitchInfo.EpochSwitchParentBlockInfo = quorumCert.ProposedBlockInfo
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}
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x.epochSwitches.Add(hash, epochSwitchInfo)
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return epochSwitchInfo, nil
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}
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epochSwitchInfo, err := x.getEpochSwitchInfo(chain, nil, h.ParentHash)
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if err != nil {
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log.Error("[getEpochSwitchInfo] recursive error", "err", err, "hash", hash.Hex(), "number", h.Number.Uint64())
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return nil, err
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}
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log.Debug("[getEpochSwitchInfo] get epoch switch info recursively", "hash", hash.Hex(), "number", h.Number.Uint64())
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x.epochSwitches.Add(hash, epochSwitchInfo)
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return epochSwitchInfo, nil
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}
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// IsEpochSwitchAtRound() is used by miner to check whether it mines a block in the same epoch with parent
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func (x *XDPoS_v2) isEpochSwitchAtRound(round utils.Round, parentHeader *types.Header) (bool, uint64, error) {
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epochNum := x.config.V2.SwitchBlock.Uint64()/x.config.Epoch + uint64(round)/x.config.Epoch
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// if parent is last v1 block and this is first v2 block, this is treated as epoch switch
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if parentHeader.Number.Cmp(x.config.V2.SwitchBlock) == 0 {
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return true, epochNum, nil
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}
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_, round, _, err := x.getExtraFields(parentHeader)
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if err != nil {
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log.Error("[IsEpochSwitch] decode header error", "err", err, "header", parentHeader, "extra", common.Bytes2Hex(parentHeader.Extra))
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return false, 0, err
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}
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parentRound := round
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epochStartRound := round - round%utils.Round(x.config.Epoch)
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return parentRound < epochStartRound, epochNum, nil
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}
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