public void Stake(Address from, BigInteger stakeAmount)
{
Runtime.Expect(stakeAmount >= MinimumValidStake, "invalid amount");
Runtime.Expect(Runtime.IsWitness(from), "witness failed");
var balance = Runtime.GetBalance(DomainSettings.StakingTokenSymbol, from);
if (stakeAmount > balance)
{
var diff = stakeAmount - balance;
throw new BalanceException("SOUL", from, diff);
balance = stakeAmount; // debug mode only, otherwise a exception will prevent it from reaching here
}
Runtime.Expect(balance >= stakeAmount, $"balance: {balance} stake: {stakeAmount} not enough balance to stake at " + from);
Runtime.TransferTokens(DomainSettings.StakingTokenSymbol, from, this.Address, stakeAmount);
EnergyStake stake;
if (_stakeMap.ContainsKey <Address>(from))
{
stake = _stakeMap.Get <Address, EnergyStake>(from);
}
else
{
stake = new EnergyStake()
{
stakeTime = new Timestamp(0),
stakeAmount = 0,
};
}
stake.stakeTime = Runtime.Time;
stake.stakeAmount += stakeAmount;
_stakeMap.Set <Address, EnergyStake>(from, stake);
Runtime.AddMember(DomainSettings.StakersOrganizationName, this.Address, from);
var claimList = _claimMap.Get <Address, StorageList>(from);
var claimEntry = new EnergyClaim()
{
stakeAmount = stakeAmount,
claimDate = this.Runtime.Time,
isNew = true,
};
claimList.Add(claimEntry);
var logEntry = new VotingLogEntry()
{
timestamp = this.Runtime.Time,
amount = stakeAmount
};
var votingLogbook = _voteHistory.Get <Address, StorageList>(from);
votingLogbook.Add(logEntry);
// masters membership
var masterAccountThreshold = GetMasterThreshold();
if (stake.stakeAmount >= masterAccountThreshold && !IsMaster(from))
{
var nextClaim = GetMasterClaimDate(2);
Runtime.AddMember(DomainSettings.MastersOrganizationName, this.Address, from);
_masterClaims.Set <Address, Timestamp>(from, nextClaim);
_masterAgeMap.Set <Address, Timestamp>(from, Runtime.Time);
}
}
// NOTE - witness not required, as anyone should be able to call this, permission is granted based on consensus
public void SetValidator(Address target, BigInteger index, ValidatorType type)
{
Runtime.Expect(target.IsUser, "must be user address");
Runtime.Expect(type == ValidatorType.Primary || type == ValidatorType.Secondary, "invalid validator type");
var primaryValidators = GetValidatorCount(ValidatorType.Primary);
var secondaryValidators = GetValidatorCount(ValidatorType.Secondary);
Runtime.Expect(index >= 0, "invalid index");
var totalValidators = GetMaxTotalValidators();
Runtime.Expect(index < totalValidators, "invalid index");
var expectedType = index < GetMaxPrimaryValidators() ? ValidatorType.Primary : ValidatorType.Secondary;
Runtime.Expect(type == expectedType, "unexpected validator type");
var requiredStake = Runtime.CallContext(NativeContractKind.Stake, nameof(StakeContract.GetMasterThreshold), target).AsNumber();
var stakedAmount = Runtime.GetStake(target);
Runtime.Expect(stakedAmount >= requiredStake, "not enough stake");
if (index > 0)
{
var isPreviousSet = _validators.ContainsKey <BigInteger>(index - 1);
Runtime.Expect(isPreviousSet, "previous validator slot is not set");
var previousEntry = _validators.Get <BigInteger, ValidatorEntry>(index - 1);
Runtime.Expect(previousEntry.type != ValidatorType.Invalid, " previous validator has unexpected status");
}
if (primaryValidators > 0)
{
var isValidatorProposed = _validators.ContainsKey <BigInteger>(index);
if (isValidatorProposed)
{
var currentEntry = _validators.Get <BigInteger, ValidatorEntry>(index);
if (currentEntry.type != ValidatorType.Proposed)
{
Runtime.Expect(currentEntry.type == ValidatorType.Invalid, "invalid validator state");
isValidatorProposed = false;
}
}
if (isValidatorProposed)
{
Runtime.Expect(Runtime.IsWitness(target), "invalid witness");
}
else
{
if (primaryValidators > 1)
{
var pollName = ConsensusContract.SystemPoll + ValidatorPollTag;
var obtainedRank = Runtime.CallContext("consensus", "GetRank", pollName, target).AsNumber();
Runtime.Expect(obtainedRank >= 0, "no consensus for electing this address");
Runtime.Expect(obtainedRank == index, "this address was elected at a different index");
}
else
{
var firstValidator = GetValidatorByIndex(0).address;
Runtime.Expect(Runtime.IsWitness(firstValidator), "invalid witness");
}
type = ValidatorType.Proposed;
}
}
else
{
Runtime.Expect(Runtime.IsWitness(Runtime.GenesisAddress), "invalid witness");
}
var entry = new ValidatorEntry()
{
address = target,
election = Runtime.Time,
type = type,
};
_validators.Set <BigInteger, ValidatorEntry>(index, entry);
if (type == ValidatorType.Primary)
{
var newValidators = GetValidatorCount(ValidatorType.Primary);
Runtime.Expect(newValidators > primaryValidators, "number of primary validators did not change");
}
else
if (type == ValidatorType.Secondary)
{
var newValidators = GetValidatorCount(ValidatorType.Secondary);
Runtime.Expect(newValidators > secondaryValidators, "number of secondary validators did not change");
}
if (type != ValidatorType.Proposed)
{
Runtime.AddMember(DomainSettings.ValidatorsOrganizationName, this.Address, target);
}
Runtime.Notify(type == ValidatorType.Proposed ? EventKind.ValidatorPropose : EventKind.ValidatorElect, Runtime.Chain.Address, target);
}