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Add candidate events #2754

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merged 9 commits into from
May 26, 2022
Merged

Add candidate events #2754

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9eef2ca
Add events
shargon May 23, 2022
f040db1
Unify
shargon May 24, 2022
703d704
Distribute gas after notification
erikzhang May 24, 2022
a80fa80
Erik's feedback
shargon May 26, 2022
de0412e
Optimize without neo
shargon May 26, 2022
744a1d7
Update src/neo/SmartContract/Native/NeoToken.cs
shargon May 26, 2022
23f55c5
Merge branch 'master' into candidate-events
shargon May 26, 2022
08c8605
Fix UT
erikzhang May 26, 2022
f495f20
Merge branch 'master' into candidate-events
erikzhang May 26, 2022
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64 changes: 64 additions & 0 deletions src/neo/SmartContract/Native/NeoToken.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@
using Neo.IO;
using Neo.Persistence;
using Neo.SmartContract.Iterators;
using Neo.SmartContract.Manifest;
using Neo.VM;
using Neo.VM.Types;
using System;
Expand Down Expand Up @@ -56,6 +57,61 @@ public sealed class NeoToken : FungibleToken<NeoToken.NeoAccountState>
internal NeoToken()
{
this.TotalAmount = 100000000 * Factor;

var events = new List<ContractEventDescriptor>(Manifest.Abi.Events)
{
new ContractEventDescriptor
{
Name = "CandidateStateChanged",
Parameters = new ContractParameterDefinition[]
{
new ContractParameterDefinition()
{
Name = "pubkey",
Type = ContractParameterType.PublicKey
},
new ContractParameterDefinition()
{
Name = "registered",
Type = ContractParameterType.Boolean
},
new ContractParameterDefinition()
{
Name = "votes",
Type = ContractParameterType.Integer
}
}
},
new ContractEventDescriptor
{
Name = "Vote",
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Parameters = new ContractParameterDefinition[]
{
new ContractParameterDefinition()
{
Name = "account",
Type = ContractParameterType.Hash160
},
new ContractParameterDefinition()
{
Name = "voteTo",
Type = ContractParameterType.PublicKey
},
new ContractParameterDefinition()
{
Name = "balance",
Type = ContractParameterType.Integer
},
new ContractParameterDefinition()
{
Name = "votes",
Type = ContractParameterType.Integer
}
}
}
};

Manifest.Abi.Events = events.ToArray();
}

public override BigInteger TotalSupply(DataCache snapshot)
Expand Down Expand Up @@ -295,7 +351,10 @@ private bool RegisterCandidate(ApplicationEngine engine, ECPoint pubkey)
StorageKey key = CreateStorageKey(Prefix_Candidate).Add(pubkey);
StorageItem item = engine.Snapshot.GetAndChange(key, () => new StorageItem(new CandidateState()));
CandidateState state = item.GetInteroperable<CandidateState>();
if (state.Registered) return true;
state.Registered = true;
engine.SendNotification(Hash, "CandidateStateChanged",
new VM.Types.Array(engine.ReferenceCounter) { pubkey.ToArray(), true, state.Votes });
return true;
}

Expand All @@ -308,8 +367,11 @@ private bool UnregisterCandidate(ApplicationEngine engine, ECPoint pubkey)
if (engine.Snapshot.TryGet(key) is null) return true;
StorageItem item = engine.Snapshot.GetAndChange(key);
CandidateState state = item.GetInteroperable<CandidateState>();
if (!state.Registered) return true;
state.Registered = false;
CheckCandidate(engine.Snapshot, pubkey, state);
engine.SendNotification(Hash, "CandidateStateChanged",
new VM.Types.Array(engine.ReferenceCounter) { pubkey.ToArray(), false, state.Votes });
return true;
}

Expand Down Expand Up @@ -348,6 +410,8 @@ private async ContractTask<bool> Vote(ApplicationEngine engine, UInt160 account,
{
validator_new.Votes += state_account.Balance;
}
engine.SendNotification(Hash, "Vote",
new VM.Types.Array(engine.ReferenceCounter) { account.ToArray(), voteTo?.ToArray() ?? StackItem.Null, state_account.Balance, validator_new?.Votes ?? StackItem.Null });
if (gasDistribution is not null)
await GAS.Mint(engine, gasDistribution.Account, gasDistribution.Amount, true);
return true;
Expand Down