/// <summary>Schedules a vote for the next time when the block will be mined.</summary>
/// <exception cref="InvalidOperationException">Thrown in case caller is not a federation member.</exception>
public void ScheduleVote(VotingData votingData)
{
this.EnsureInitialized();
if (!this.federationManager.IsFederationMember)
{
this.logger.LogTrace("(-)[NOT_FED_MEMBER]");
throw new InvalidOperationException("Not a federation member!");
}
lock (this.locker)
{
this.scheduledVotingData.Add(votingData);
this.CleanFinishedPollsLocked();
}
this.logger.LogDebug("Vote was scheduled with key: {0}.", votingData.Key);
}
/// <inheritdoc />
public string ConvertToString(VotingData data)
{
string action = $"Action:'{data.Key}'";
switch (data.Key)
{
case VoteKey.AddFederationMember:
case VoteKey.KickFederationMember:
IFederationMember federationMember = this.consensusFactory.DeserializeFederationMember(data.Data);
return($"{action},FederationMember:'{federationMember}'");
case VoteKey.WhitelistHash:
case VoteKey.RemoveHash:
var hash = new uint256(data.Data);
return($"{action},Hash:'{hash}'");
}
return("unknown (not supported voting data key)");
}
/// <summary>Checks pending polls against finished polls and removes pending polls that will make no difference and basically are redundant.</summary>
/// <remarks>All access should be protected by <see cref="locker"/>.</remarks>
private void CleanFinishedPollsLocked()
{
// We take polls that are not pending (collected enough votes in favor) but not executed yet (maxReorg blocks
// didn't pass since the vote that made the poll pass). We can't just take not pending polls because of the
// following scenario: federation adds a hash or fed member or does any other revertable action, then reverts
// the action (removes the hash) and then reapplies it again. To allow for this scenario we have to exclude
// executed polls here.
List <Poll> finishedPolls = this.polls.Where(x => !x.IsPending && !x.IsExecuted).ToList();
for (int i = this.scheduledVotingData.Count - 1; i >= 0; i--)
{
VotingData currentScheduledData = this.scheduledVotingData[i];
// Remove scheduled voting data that can be found in finished polls that were not yet executed.
if (finishedPolls.Any(x => x.VotingData == currentScheduledData))
{
this.scheduledVotingData.RemoveAt(i);
}
}
}
/// <inheritdoc />
public void RevertChange(VotingData data)
{
switch (data.Key)
{
case VoteKey.AddFederationMember:
this.RemoveFederationMember(data.Data);
break;
case VoteKey.KickFederationMember:
this.AddFederationMember(data.Data);
break;
case VoteKey.WhitelistHash:
this.RemoveHash(data.Data);
break;
case VoteKey.RemoveHash:
this.AddHash(data.Data);
break;
}
}
public VotingDataModel(VotingData votingData)
{
this.Key = votingData.Key.ToString();
this.Hash = (new uint256(votingData.Data)).ToString();
}
