private string GetProof(Trie trie, int contract_id, byte[] key)
{
StorageKey skey = new StorageKey
{
Id = contract_id,
Key = key,
};
var result = trie.TryGetProof(skey.ToArray(), out var proof);
if (!result)
{
throw new KeyNotFoundException();
}
using MemoryStream ms = new();
using BinaryWriter writer = new(ms, Utility.StrictUTF8);
writer.WriteVarBytes(skey.ToArray());
writer.WriteVarInt(proof.Count);
foreach (var item in proof)
{
writer.WriteVarBytes(item);
}
writer.Flush();
return(Convert.ToBase64String(ms.ToArray()));
}
internal override async ContractTask PostPersist(ApplicationEngine engine)
{
// Distribute GAS for committee
int m = engine.ProtocolSettings.CommitteeMembersCount;
int n = engine.ProtocolSettings.ValidatorsCount;
int index = (int)(engine.PersistingBlock.Index % (uint)m);
var gasPerBlock = GetGasPerBlock(engine.Snapshot);
var committee = GetCommitteeFromCache(engine.Snapshot);
var pubkey = committee[index].PublicKey;
var account = Contract.CreateSignatureRedeemScript(pubkey).ToScriptHash();
await GAS.Mint(engine, account, gasPerBlock *CommitteeRewardRatio / 100, false);
// Record the cumulative reward of the voters of committee
if (ShouldRefreshCommittee(engine.PersistingBlock.Index, m))
{
BigInteger voterRewardOfEachCommittee = gasPerBlock * VoterRewardRatio * 100000000L * m / (m + n) / 100; // Zoom in 100000000 times, and the final calculation should be divided 100000000L
for (index = 0; index < committee.Count; index++)
{
var member = committee[index];
var factor = index < n ? 2 : 1; // The `voter` rewards of validator will double than other committee's
if (member.Votes > 0)
{
BigInteger voterSumRewardPerNEO = factor * voterRewardOfEachCommittee / member.Votes;
StorageKey voterRewardKey = CreateStorageKey(Prefix_VoterRewardPerCommittee).Add(member.PublicKey).AddBigEndian(engine.PersistingBlock.Index + 1);
byte[] border = CreateStorageKey(Prefix_VoterRewardPerCommittee).Add(member.PublicKey).ToArray();
(_, var item) = engine.Snapshot.FindRange(voterRewardKey.ToArray(), border, SeekDirection.Backward).FirstOrDefault();
voterSumRewardPerNEO += (item ?? BigInteger.Zero);
engine.Snapshot.Add(voterRewardKey, new StorageItem(voterSumRewardPerNEO));
}
}
}
}
protected override StorageItem TryGetInternal(StorageKey key)
{
byte[] value = store.TryGet(key.ToArray());
if (value == null)
{
return(null);
}
return(new(value));
}
protected override StorageItem GetInternal(StorageKey key)
{
byte[] value = store.TryGet(key.ToArray());
if (value == null)
{
throw new KeyNotFoundException();
}
return(new(value));
}
public void Size()
{
var ut = new StorageKey()
{
Key = new byte[17], ScriptHash = UInt160.Zero
};
ut.ToArray().Length.Should().Be(((ISerializable)ut).Size);
ut = new StorageKey()
{
Key = new byte[0], ScriptHash = UInt160.Zero
};
ut.ToArray().Length.Should().Be(((ISerializable)ut).Size);
ut = new StorageKey()
{
Key = new byte[16], ScriptHash = UInt160.Zero
};
ut.ToArray().Length.Should().Be(((ISerializable)ut).Size);
}
public void Size()
{
var ut = new StorageKey()
{
Key = new byte[17], Id = 0
};
ut.ToArray().Length.Should().Be(((ISerializable)ut).Size);
ut = new StorageKey()
{
Key = new byte[0], Id = 0
};
ut.ToArray().Length.Should().Be(((ISerializable)ut).Size);
ut = new StorageKey()
{
Key = new byte[16], Id = 0
};
ut.ToArray().Length.Should().Be(((ISerializable)ut).Size);
}
private string GetProof(UInt256 root_hash, UInt160 script_hash, byte[] key)
{
if (!Settings.Default.FullState && StateStore.Singleton.CurrentLocalRootHash != root_hash)
{
throw new RpcException(-100, "Old state not supported");
}
var snapshot = System.StoreView;
var contract = NativeContract.ContractManagement.GetContract(snapshot, script_hash);
if (contract is null)
{
throw new RpcException(-100, "Unknown contract");
}
StorageKey skey = new StorageKey
{
Id = contract.Id,
Key = key,
};
HashSet <byte[]> proof = StateStore.Singleton.GetProof(root_hash, skey);
if (proof is null)
{
throw new RpcException(-100, "Unknown value");
}
using MemoryStream ms = new MemoryStream();
using BinaryWriter writer = new BinaryWriter(ms, Utility.StrictUTF8);
writer.WriteVarBytes(skey.ToArray());
writer.WriteVarInt(proof.Count);
foreach (var item in proof)
{
writer.WriteVarBytes(item);
}
writer.Flush();
return(Convert.ToBase64String(ms.ToArray()));
}
protected override void UpdateInternal(StorageKey key, StorageItem value)
{
snapshot?.Put(key.ToArray(), value.ToArray());
}
protected override StorageItem TryGetInternal(StorageKey key)
{
return(store.TryGet(key.ToArray())?.AsSerializable <StorageItem>());
}
protected override bool ContainsInternal(StorageKey key)
{
return(store.Contains(key.ToArray()));
}
protected override void DeleteInternal(StorageKey key)
{
snapshot?.Delete(key.ToArray());
}