/// <summary>
/// This method will be executed before executing a block.
/// </summary>
/// <param name="extraData"></param>
/// <returns></returns>
private ValidationResult ValidateBeforeExecution(AElfConsensusHeaderInformation extraData)
{
// According to current round information:
if (!TryToGetCurrentRoundInformation(out var baseRound))
{
return(new ValidationResult {
Success = false, Message = "Failed to get current round information."
});
}
// Skip the certain initial miner during first several rounds. (When other nodes haven't produce blocks yet.)
if (baseRound.RealTimeMinersInformation.Count != 1 &&
Context.CurrentHeight < AEDPoSContractConstants.MaximumTinyBlocksCount.Mul(3))
{
string producedMiner = null;
var result = true;
for (var i = baseRound.RoundNumber; i > 0; i--)
{
var producedMiners = State.Rounds[i].RealTimeMinersInformation.Values
.Where(m => m.ActualMiningTimes.Any()).ToList();
if (producedMiners.Count != 1)
{
result = false;
break;
}
if (producedMiner == null)
{
producedMiner = producedMiners.Single().Pubkey;
}
else if (producedMiner != producedMiners.Single().Pubkey)
{
result = false;
}
}
if (result)
{
return(new ValidationResult {
Success = true
});
}
}
if (extraData.Behaviour == AElfConsensusBehaviour.UpdateValue)
{
baseRound.RecoverFromUpdateValue(extraData.Round, extraData.SenderPubkey.ToHex());
}
if (extraData.Behaviour == AElfConsensusBehaviour.TinyBlock)
{
baseRound.RecoverFromTinyBlock(extraData.Round, extraData.SenderPubkey.ToHex());
}
var validationContext = new ConsensusValidationContext
{
BaseRound = baseRound,
CurrentTermNumber = State.CurrentTermNumber.Value,
CurrentRoundNumber = State.CurrentRoundNumber.Value,
PreviousRound = TryToGetPreviousRoundInformation(out var previousRound) ? previousRound : new Round(),
LatestPubkeyToTinyBlocksCount = State.LatestPubkeyToTinyBlocksCount.Value,
ExtraData = extraData
};
/* Ask several questions: */
// Add basic providers at first.
var validationProviders = new List <IHeaderInformationValidationProvider>
{
// Is sender in miner list (of base round)?
new MiningPermissionValidationProvider(),
// Is this block produced in proper time?
new TimeSlotValidationProvider(),
// Is sender produced too many blocks at one time?
new ContinuousBlocksValidationProvider()
};
switch (extraData.Behaviour)
{
case AElfConsensusBehaviour.UpdateValue:
validationProviders.Add(new UpdateValueValidationProvider());
// Is confirmed lib height and lib round number went down? (Which should not happens.)
validationProviders.Add(new LibInformationValidationProvider());
break;
case AElfConsensusBehaviour.NextRound:
// Is sender's order of next round correct?
validationProviders.Add(new NextRoundMiningOrderValidationProvider());
validationProviders.Add(new RoundTerminateValidationProvider());
break;
case AElfConsensusBehaviour.NextTerm:
validationProviders.Add(new RoundTerminateValidationProvider());
break;
}
var service = new HeaderInformationValidationService(validationProviders);
Context.LogDebug(() => $"Validating behaviour: {extraData.Behaviour.ToString()}");
var validationResult = service.ValidateInformation(validationContext);
if (validationResult.Success == false)
{
Context.LogDebug(() => $"Consensus Validation before execution failed : {validationResult.Message}");
}
return(validationResult);
}
}
/// <summary>
/// This method will be executed before executing a block.
/// </summary>
/// <param name="extraData"></param>
/// <returns></returns>
private ValidationResult ValidateBeforeExecution(AElfConsensusHeaderInformation extraData)
{
// According to current round information:
if (!TryToGetCurrentRoundInformation(out var baseRound))
{
return(new ValidationResult {
Success = false, Message = "Failed to get current round information."
});
}
if (extraData.Behaviour == AElfConsensusBehaviour.UpdateValue)
{
baseRound.RecoverFromUpdateValue(extraData.Round, extraData.SenderPubkey.ToHex());
}
if (extraData.Behaviour == AElfConsensusBehaviour.TinyBlock)
{
baseRound.RecoverFromTinyBlock(extraData.Round, extraData.SenderPubkey.ToHex());
}
var validationContext = new ConsensusValidationContext
{
BaseRound = baseRound,
CurrentTermNumber = State.CurrentTermNumber.Value,
CurrentRoundNumber = State.CurrentRoundNumber.Value,
PreviousRound = TryToGetPreviousRoundInformation(out var previousRound) ? previousRound : new Round(),
LatestPubkeyToTinyBlocksCount = State.LatestPubkeyToTinyBlocksCount.Value,
ExtraData = extraData
};
/* Ask several questions: */
// Add basic providers at first.
var validationProviders = new List <IHeaderInformationValidationProvider>
{
// Is sender in miner list (of base round)?
new MiningPermissionValidationProvider(),
// Is this block produced in proper time?
new TimeSlotValidationProvider(),
// Is sender produced too many blocks at one time?
new ContinuousBlocksValidationProvider()
};
switch (extraData.Behaviour)
{
case AElfConsensusBehaviour.UpdateValue:
validationProviders.Add(new UpdateValueValidationProvider());
// Is confirmed lib height and lib round number went down? (Which should not happens.)
validationProviders.Add(new LibInformationValidationProvider());
break;
case AElfConsensusBehaviour.NextRound:
// Is sender's order of next round correct?
validationProviders.Add(new NextRoundMiningOrderValidationProvider());
validationProviders.Add(new RoundTerminateValidationProvider());
break;
case AElfConsensusBehaviour.NextTerm:
validationProviders.Add(new RoundTerminateValidationProvider());
break;
}
var service = new HeaderInformationValidationService(validationProviders);
Context.LogDebug(() => $"Validating behaviour: {extraData.Behaviour.ToString()}");
var validationResult = service.ValidateInformation(validationContext);
if (validationResult.Success == false)
{
Context.LogDebug(() => $"Consensus Validation before execution failed : {validationResult.Message}");
}
return(validationResult);
}
}
