/// <summary>
/// Get consensus behaviour for chain that able to change term,
/// like AElf Main Chain.
/// </summary>
/// <param name="currentRound"></param>
/// <param name="termNumber"></param>
/// <returns></returns>
private AElfConsensusBehaviour GetBehaviourForChainAbleToChangeTerm(Round currentRound, long termNumber)
{
// In first round, the blockchain start timestamp is incorrect.
// We can return NextRound directly.
if (currentRound.RoundNumber == 1)
{
return(AElfConsensusBehaviour.NextRound);
}
if (!TryToGetPreviousRoundInformation(out var previousRound))
{
Assert(false, $"Failed to get previous round information at height {Context.CurrentHeight}");
}
Assert(TryToGetBlockchainStartTimestamp(out var blockchainStartTimestamp),
"Failed to get blockchain start timestamp.");
Context.LogDebug(() => $"Using start timestamp: {blockchainStartTimestamp}");
// Calculate the approvals and make the judgement of changing term.
return(currentRound.IsTimeToChangeTerm(previousRound, blockchainStartTimestamp, termNumber,
State.TimeEachTerm.Value)
? AElfConsensusBehaviour.NextTerm
: AElfConsensusBehaviour.NextRound);
}
