protected async Task ValidateEndorsement(RawEndorsementContent endorsement, RawBlock rawBlock)
{
var lastBlock = await Cache.Blocks.CurrentAsync();
if (endorsement.Level != lastBlock.Level)
{
throw new ValidationException("invalid endorsed block level");
}
if (!Cache.Accounts.DelegateExists(endorsement.Metadata.Delegate))
{
throw new ValidationException("invalid endorsement delegate");
}
if (endorsement.Metadata.BalanceUpdates.Count != 0 && endorsement.Metadata.BalanceUpdates.Count != (Protocol.BlockReward0 > 0 ? 3 : 2))
{
throw new ValidationException("invalid endorsement balance updates count");
}
if (endorsement.Metadata.BalanceUpdates.Count > 0)
{
var contractUpdate = endorsement.Metadata.BalanceUpdates.FirstOrDefault(x => x is ContractUpdate) as ContractUpdate
?? throw new ValidationException("invalid endorsement contract balance updates");
var depostisUpdate = endorsement.Metadata.BalanceUpdates.FirstOrDefault(x => x is DepositsUpdate) as DepositsUpdate
?? throw new ValidationException("invalid endorsement depostis balance updates");
if (contractUpdate.Contract != endorsement.Metadata.Delegate ||
contractUpdate.Change != -endorsement.Metadata.Slots.Count * Protocol.EndorsementDeposit)
{
throw new ValidationException("invalid endorsement contract update");
}
if (depostisUpdate.Delegate != endorsement.Metadata.Delegate ||
depostisUpdate.Change != endorsement.Metadata.Slots.Count * Protocol.EndorsementDeposit)
{
throw new ValidationException("invalid endorsement depostis update");
}
if (Cycle >= (Protocol.PreservedCycles + 2))
{
var rewardsUpdate = endorsement.Metadata.BalanceUpdates.FirstOrDefault(x => x is RewardsUpdate) as RewardsUpdate
?? throw new ValidationException("invalidendorsement rewards updates");
if (rewardsUpdate.Delegate != endorsement.Metadata.Delegate ||
rewardsUpdate.Change != GetEndorsementReward(endorsement.Metadata.Slots.Count, lastBlock.Priority))
{
throw new ValidationException("invalid endorsement rewards update");
}
}
}
}
public Task Init(Block block, RawOperation op, RawEndorsementContent content)
{
Endorsement = new EndorsementOperation
{
Id = Cache.AppState.NextOperationId(),
Block = block,
Level = block.Level,
Timestamp = block.Timestamp,
OpHash = op.Hash,
Slots = content.Metadata.Slots.Count,
Delegate = Cache.Accounts.GetDelegate(content.Metadata.Delegate),
Reward = content.Metadata.BalanceUpdates.FirstOrDefault(x => x is RewardsUpdate)?.Change ?? 0
};
return(Task.CompletedTask);
}
public static async Task <EndorsementsCommit> Apply(ProtocolHandler proto, Block block, RawOperation op, RawEndorsementContent content)
{
var commit = new EndorsementsCommit(proto);
await commit.Init(block, op, content);
await commit.Apply();
return(commit);
}