public IEnumerable <(ECPoint PublicKey, BigInteger Votes)> GetRegisteredValidators(Snapshot snapshot)
{
return(snapshot.Storages.Find(new[] { Prefix_Validator }).Select(p =>
(
p.Key.Key.Skip(1).ToArray().AsSerializable <ECPoint>(),
ValidatorState.FromByteArray(p.Value.Value).Votes
)));
}
public void TestValidatorState_FromByteArray()
{
ValidatorState input = new ValidatorState {
Votes = new BigInteger(1000)
};
ValidatorState output = ValidatorState.FromByteArray(input.ToByteArray());
output.Should().BeEquivalentTo(input);
}
public IEnumerable <(ECPoint PublicKey, BigInteger Votes)> GetRegisteredValidators(StoreView snapshot)
{
byte[] prefix_key = StorageKey.CreateSearchPrefix(Id, new[] { Prefix_Validator });
return(snapshot.Storages.Find(prefix_key).Select(p =>
(
p.Key.Key.AsSerializable <ECPoint>(1),
ValidatorState.FromByteArray(p.Value.Value).Votes
)));
}
private StackItem Vote(ApplicationEngine engine, VMArray args)
{
UInt160 account = new UInt160(args[0].GetByteArray());
ECPoint[] pubkeys = ((VMArray)args[1]).Select(p => p.GetByteArray().AsSerializable <ECPoint>()).ToArray();
if (!InteropService.CheckWitness(engine, account))
{
return(false);
}
StorageKey key_account = CreateAccountKey(account);
if (engine.Snapshot.Storages.TryGet(key_account) is null)
{
return(false);
}
StorageItem storage_account = engine.Snapshot.Storages.GetAndChange(key_account);
AccountState state_account = new AccountState(storage_account.Value);
foreach (ECPoint pubkey in state_account.Votes)
{
StorageItem storage_validator = engine.Snapshot.Storages.GetAndChange(CreateStorageKey(Prefix_Validator, pubkey.ToArray()));
ValidatorState state_validator = ValidatorState.FromByteArray(storage_validator.Value);
state_validator.Votes -= state_account.Balance;
storage_validator.Value = state_validator.ToByteArray();
}
pubkeys = pubkeys.Distinct().Where(p => engine.Snapshot.Storages.TryGet(CreateStorageKey(Prefix_Validator, p.ToArray())) != null).ToArray();
if (pubkeys.Length != state_account.Votes.Length)
{
StorageItem storage_count = engine.Snapshot.Storages.GetAndChange(CreateStorageKey(Prefix_ValidatorsCount), () => new StorageItem
{
Value = new ValidatorsCountState().ToByteArray()
});
ValidatorsCountState state_count = ValidatorsCountState.FromByteArray(storage_count.Value);
if (state_account.Votes.Length > 0)
{
state_count.Votes[state_account.Votes.Length - 1] -= state_account.Balance;
}
if (pubkeys.Length > 0)
{
state_count.Votes[pubkeys.Length - 1] += state_account.Balance;
}
storage_count.Value = state_count.ToByteArray();
}
state_account.Votes = pubkeys;
storage_account.Value = state_account.ToByteArray();
foreach (ECPoint pubkey in state_account.Votes)
{
StorageItem storage_validator = engine.Snapshot.Storages.GetAndChange(CreateStorageKey(Prefix_Validator, pubkey.ToArray()));
ValidatorState state_validator = ValidatorState.FromByteArray(storage_validator.Value);
state_validator.Votes += state_account.Balance;
storage_validator.Value = state_validator.ToByteArray();
}
return(true);
}
protected override void OnBalanceChanging(ApplicationEngine engine, UInt160 account, AccountState state, BigInteger amount)
{
DistributeGas(engine, account, state);
if (amount.IsZero)
{
return;
}
if (state.Votes.Length == 0)
{
return;
}
foreach (ECPoint pubkey in state.Votes)
{
StorageItem storage_validator = engine.Snapshot.Storages.GetAndChange(CreateStorageKey(Prefix_Validator, pubkey.ToArray()));
ValidatorState state_validator = ValidatorState.FromByteArray(storage_validator.Value);
state_validator.Votes += amount;
storage_validator.Value = state_validator.ToByteArray();
}
StorageItem storage_count = engine.Snapshot.Storages.GetAndChange(CreateStorageKey(Prefix_ValidatorsCount));
ValidatorsCountState state_count = ValidatorsCountState.FromByteArray(storage_count.Value);
state_count.Votes[state.Votes.Length - 1] += amount;
storage_count.Value = state_count.ToByteArray();
}