public async Task Init(Block block, RawOperation op, RawBallotContent content)
{
var period = await Cache.Periods.CurrentAsync();
var proposal = await Cache.Proposals.GetAsync((period as ExplorationPeriod)?.ProposalId ?? (period as PromotionPeriod).ProposalId);
var sender = Cache.Accounts.GetDelegate(content.Source);
var rolls = 0;
if (block.Events.HasFlag(BlockEvents.VotingPeriodBegin))
rolls = (int)(sender.StakingBalance / block.Protocol.TokensPerRoll);
else
rolls = (await Db.VotingSnapshots.FirstAsync(x => x.PeriodId == period.Id && x.DelegateId == sender.Id)).Rolls;
Ballot = new BallotOperation
{
Id = Cache.AppState.NextOperationId(),
Block = block,
Level = block.Level,
Timestamp = block.Timestamp,
OpHash = op.Hash,
Sender = sender,
Rolls = rolls,
Period = period,
Proposal = proposal,
Vote = content.Ballot switch
{
"yay" => Vote.Yay,
"nay" => Vote.Nay,
"pass" => Vote.Pass,
_ => throw new Exception("invalid ballot value")
}
};
}
protected async Task ValidateBallot(RawBallotContent ballot, RawBlock rawBlock)
{
var period = await Cache.Periods.CurrentAsync();
if (period.EndLevel == rawBlock.Level - 1)
{
return;
}
var proposal = await Cache.Proposals.GetAsync((period as ExplorationPeriod)?.ProposalId ?? (period as PromotionPeriod).ProposalId);
if (proposal.Hash != ballot.Proposal)
{
throw new ValidationException("invalid ballot proposal");
}
if (!Cache.Accounts.DelegateExists(ballot.Source))
{
throw new ValidationException("invalid proposal sender");
}
if (ballot.Period != rawBlock.Metadata.LevelInfo.VotingPeriod)
{
throw new ValidationException("invalid proposal voting period");
}
}
public static async Task<BallotsCommit> Apply(ProtocolHandler proto, Block block, RawOperation op, RawBallotContent content)
{
var commit = new BallotsCommit(proto);
await commit.Init(block, op, content);
await commit.Apply();
return commit;
}
