Golang ConsensusChange.FileContractDiffs方法代碼示例

// computeConsensusChange computes the consensus change from the change entry
// at index 'i' in the change log. If i is out of bounds, an error is returned.
func (cs *ConsensusSet) computeConsensusChange(tx *bolt.Tx, ce changeEntry) (modules.ConsensusChange, error) {
	cc := modules.ConsensusChange{
		ID: ce.ID(),
	}
	for _, revertedBlockID := range ce.RevertedBlocks {
		revertedBlock, err := getBlockMap(tx, revertedBlockID)
		if err != nil {
			cs.log.Critical("getBlockMap failed in computeConsensusChange:", err)
			return modules.ConsensusChange{}, err
		}

		// Because the direction is 'revert', the order of the diffs needs to
		// be flipped and the direction of the diffs also needs to be flipped.
		cc.RevertedBlocks = append(cc.RevertedBlocks, revertedBlock.Block)
		for i := len(revertedBlock.SiacoinOutputDiffs) - 1; i >= 0; i-- {
			scod := revertedBlock.SiacoinOutputDiffs[i]
			scod.Direction = !scod.Direction
			cc.SiacoinOutputDiffs = append(cc.SiacoinOutputDiffs, scod)
		}
		for i := len(revertedBlock.FileContractDiffs) - 1; i >= 0; i-- {
			fcd := revertedBlock.FileContractDiffs[i]
			fcd.Direction = !fcd.Direction
			cc.FileContractDiffs = append(cc.FileContractDiffs, fcd)
		}
		for i := len(revertedBlock.SiafundOutputDiffs) - 1; i >= 0; i-- {
			sfod := revertedBlock.SiafundOutputDiffs[i]
			sfod.Direction = !sfod.Direction
			cc.SiafundOutputDiffs = append(cc.SiafundOutputDiffs, sfod)
		}
		for i := len(revertedBlock.DelayedSiacoinOutputDiffs) - 1; i >= 0; i-- {
			dscod := revertedBlock.DelayedSiacoinOutputDiffs[i]
			dscod.Direction = !dscod.Direction
			cc.DelayedSiacoinOutputDiffs = append(cc.DelayedSiacoinOutputDiffs, dscod)
		}
		for i := len(revertedBlock.SiafundPoolDiffs) - 1; i >= 0; i-- {
			sfpd := revertedBlock.SiafundPoolDiffs[i]
			sfpd.Direction = modules.DiffRevert
			cc.SiafundPoolDiffs = append(cc.SiafundPoolDiffs, sfpd)
		}
	}
	for _, appliedBlockID := range ce.AppliedBlocks {
		appliedBlock, err := getBlockMap(tx, appliedBlockID)
		if err != nil {
			cs.log.Critical("getBlockMap failed in computeConsensusChange:", err)
			return modules.ConsensusChange{}, err
		}

		cc.AppliedBlocks = append(cc.AppliedBlocks, appliedBlock.Block)
		for _, scod := range appliedBlock.SiacoinOutputDiffs {
			cc.SiacoinOutputDiffs = append(cc.SiacoinOutputDiffs, scod)
		}
		for _, fcd := range appliedBlock.FileContractDiffs {
			cc.FileContractDiffs = append(cc.FileContractDiffs, fcd)
		}
		for _, sfod := range appliedBlock.SiafundOutputDiffs {
			cc.SiafundOutputDiffs = append(cc.SiafundOutputDiffs, sfod)
		}
		for _, dscod := range appliedBlock.DelayedSiacoinOutputDiffs {
			cc.DelayedSiacoinOutputDiffs = append(cc.DelayedSiacoinOutputDiffs, dscod)
		}
		for _, sfpd := range appliedBlock.SiafundPoolDiffs {
			cc.SiafundPoolDiffs = append(cc.SiafundPoolDiffs, sfpd)
		}
	}

	cc.Synced = cs.synced
	return cc, nil
}

// computeConsensusChange computes the consensus change from the change entry
// at index 'i' in the change log. If i is out of bounds, an error is returned.
func (cs *ConsensusSet) computeConsensusChange(tx *bolt.Tx, ce changeEntry) (modules.ConsensusChange, error) {
	cc := modules.ConsensusChange{
		ID: ce.ID(),
	}
	for _, revertedBlockID := range ce.RevertedBlocks {
		revertedBlock, err := getBlockMap(tx, revertedBlockID)
		if err != nil {
			cs.log.Critical("getBlockMap failed in computeConsensusChange:", err)
			return modules.ConsensusChange{}, err
		}

		// Because the direction is 'revert', the order of the diffs needs to
		// be flipped and the direction of the diffs also needs to be flipped.
		cc.RevertedBlocks = append(cc.RevertedBlocks, revertedBlock.Block)
		for i := len(revertedBlock.SiacoinOutputDiffs) - 1; i >= 0; i-- {
			scod := revertedBlock.SiacoinOutputDiffs[i]
			scod.Direction = !scod.Direction
			cc.SiacoinOutputDiffs = append(cc.SiacoinOutputDiffs, scod)
		}
		for i := len(revertedBlock.FileContractDiffs) - 1; i >= 0; i-- {
			fcd := revertedBlock.FileContractDiffs[i]
			fcd.Direction = !fcd.Direction
			cc.FileContractDiffs = append(cc.FileContractDiffs, fcd)
		}
		for i := len(revertedBlock.SiafundOutputDiffs) - 1; i >= 0; i-- {
			sfod := revertedBlock.SiafundOutputDiffs[i]
			sfod.Direction = !sfod.Direction
			cc.SiafundOutputDiffs = append(cc.SiafundOutputDiffs, sfod)
		}
		for i := len(revertedBlock.DelayedSiacoinOutputDiffs) - 1; i >= 0; i-- {
			dscod := revertedBlock.DelayedSiacoinOutputDiffs[i]
			dscod.Direction = !dscod.Direction
			cc.DelayedSiacoinOutputDiffs = append(cc.DelayedSiacoinOutputDiffs, dscod)
		}
		for i := len(revertedBlock.SiafundPoolDiffs) - 1; i >= 0; i-- {
			sfpd := revertedBlock.SiafundPoolDiffs[i]
			sfpd.Direction = modules.DiffRevert
			cc.SiafundPoolDiffs = append(cc.SiafundPoolDiffs, sfpd)
		}
	}
	for _, appliedBlockID := range ce.AppliedBlocks {
		appliedBlock, err := getBlockMap(tx, appliedBlockID)
		if err != nil {
			cs.log.Critical("getBlockMap failed in computeConsensusChange:", err)
			return modules.ConsensusChange{}, err
		}

		cc.AppliedBlocks = append(cc.AppliedBlocks, appliedBlock.Block)
		for _, scod := range appliedBlock.SiacoinOutputDiffs {
			cc.SiacoinOutputDiffs = append(cc.SiacoinOutputDiffs, scod)
		}
		for _, fcd := range appliedBlock.FileContractDiffs {
			cc.FileContractDiffs = append(cc.FileContractDiffs, fcd)
		}
		for _, sfod := range appliedBlock.SiafundOutputDiffs {
			cc.SiafundOutputDiffs = append(cc.SiafundOutputDiffs, sfod)
		}
		for _, dscod := range appliedBlock.DelayedSiacoinOutputDiffs {
			cc.DelayedSiacoinOutputDiffs = append(cc.DelayedSiacoinOutputDiffs, dscod)
		}
		for _, sfpd := range appliedBlock.SiafundPoolDiffs {
			cc.SiafundPoolDiffs = append(cc.SiafundPoolDiffs, sfpd)
		}
	}

	// Grab the child target and the minimum valid child timestamp.
	recentBlock := ce.AppliedBlocks[len(ce.AppliedBlocks)-1]
	pb, err := getBlockMap(tx, recentBlock)
	if err != nil {
		cs.log.Critical("could not find process block for known block")
	}
	cc.ChildTarget = pb.ChildTarget
	cc.MinimumValidChildTimestamp = cs.blockRuleHelper.minimumValidChildTimestamp(tx.Bucket(BlockMap), pb)

	currentBlock := currentBlockID(tx)
	if cs.synced && recentBlock == currentBlock {
		cc.Synced = true
	}
	return cc, nil
}

// updateSubscribers will inform all subscribers of the new update to the
// consensus set.
func (s *State) updateSubscribers(revertedNodes []*blockNode, appliedNodes []*blockNode) {
	// Sanity check - len(appliedNodes) should never be 0.
	if build.DEBUG {
		if len(appliedNodes) == 0 {
			panic("cannot have len(appliedNodes) = 0 in consensus set - blockchain must always get heavier")
		}
	}

	// Take the nodes and condense them into a consensusChange object.
	var cc modules.ConsensusChange
	for _, rn := range revertedNodes {
		// Because the direction is 'revert', the order of the diffs needs to
		// be flipped and the direction of the diffs also needs to be flipped.
		cc.RevertedBlocks = append(cc.RevertedBlocks, rn.block)
		for i := len(rn.siacoinOutputDiffs) - 1; i >= 0; i-- {
			scod := rn.siacoinOutputDiffs[i]
			scod.Direction = !scod.Direction
			cc.SiacoinOutputDiffs = append(cc.SiacoinOutputDiffs, scod)
		}
		for i := len(rn.fileContractDiffs) - 1; i >= 0; i-- {
			fcd := rn.fileContractDiffs[i]
			fcd.Direction = !fcd.Direction
			cc.FileContractDiffs = append(cc.FileContractDiffs, fcd)
		}
		for i := len(rn.siafundOutputDiffs) - 1; i >= 0; i-- {
			sfod := rn.siafundOutputDiffs[i]
			sfod.Direction = !sfod.Direction
			cc.SiafundOutputDiffs = append(cc.SiafundOutputDiffs, sfod)
		}
		for i := len(rn.delayedSiacoinOutputDiffs) - 1; i >= 0; i-- {
			dscod := rn.delayedSiacoinOutputDiffs[i]
			dscod.Direction = !dscod.Direction
			cc.DelayedSiacoinOutputDiffs = append(cc.DelayedSiacoinOutputDiffs, dscod)
		}
		for i := len(rn.siafundPoolDiffs) - 1; i >= 0; i-- {
			sfpd := rn.siafundPoolDiffs[i]
			cc.SiafundPoolDiffs = append(cc.SiafundPoolDiffs, sfpd)
		}
	}
	for _, an := range appliedNodes {
		cc.AppliedBlocks = append(cc.AppliedBlocks, an.block)
		for _, scod := range an.siacoinOutputDiffs {
			cc.SiacoinOutputDiffs = append(cc.SiacoinOutputDiffs, scod)
		}
		for _, fcd := range an.fileContractDiffs {
			cc.FileContractDiffs = append(cc.FileContractDiffs, fcd)
		}
		for _, sfod := range an.siafundOutputDiffs {
			cc.SiafundOutputDiffs = append(cc.SiafundOutputDiffs, sfod)
		}
		for _, dscod := range an.delayedSiacoinOutputDiffs {
			cc.DelayedSiacoinOutputDiffs = append(cc.DelayedSiacoinOutputDiffs, dscod)
		}
		for _, sfpd := range an.siafundPoolDiffs {
			cc.SiafundPoolDiffs = append(cc.SiafundPoolDiffs, sfpd)
		}
	}
	// Add the changes to the change set.
	s.consensusChanges = append(s.consensusChanges, cc)

	// Notify each update channel that a new update is ready.
	for _, subscriber := range s.subscriptions {
		// If the channel is already full, don't block.
		select {
		case subscriber <- struct{}{}:
		default:
		}
	}
}