public byte[] ToArray()
{
using (stream)
{
return(StorageKey.CreateSearchPrefix(id, stream.ToArray()));
}
}
protected override IEnumerable <(ReadOnlyMemory <byte>, StorageItem)> GetStorages()
{
return(contractId.HasValue
? snapshot.Find(StorageKey.CreateSearchPrefix(contractId.Value, default))
.Select(t => ((ReadOnlyMemory <byte>)t.Key.Key, t.Value))
: Enumerable.Empty <(ReadOnlyMemory <byte>, StorageItem)>());
}
public Task <IReadOnlyList <ExpressStorage> > ListStoragesAsync(UInt160 scriptHash)
{
try
{
if (disposedValue)
{
return(Task.FromException <IReadOnlyList <ExpressStorage> >(new ObjectDisposedException(nameof(OfflineNode))));
}
using var snapshot = neoSystem.GetSnapshot();
var contract = NativeContract.ContractManagement.GetContract(snapshot, scriptHash);
if (contract == null)
{
return(Task.FromResult <IReadOnlyList <ExpressStorage> >(Array.Empty <ExpressStorage>()));
}
byte[] prefix = StorageKey.CreateSearchPrefix(contract.Id, default);
var results = snapshot.Find(prefix)
.Select(t => new ExpressStorage()
{
Key = t.Key.Key.ToHexString(),
Value = t.Value.Value.ToHexString(),
});
return(Task.FromResult <IReadOnlyList <ExpressStorage> >(results.ToArray()));
}
catch (Exception ex)
{
return(Task.FromException <IReadOnlyList <ExpressStorage> >(ex));
}
}
public IEnumerable <(ECPoint PublicKey, BigInteger Votes)> GetRegisteredValidators(Snapshot snapshot)
{
byte[] prefix_key = StorageKey.CreateSearchPrefix(Hash, new[] { Prefix_Validator });
return(snapshot.Storages.Find(prefix_key).Select(p =>
(
p.Key.Key.Skip(1).ToArray().AsSerializable <ECPoint>(),
ValidatorState.FromByteArray(p.Value.Value).Votes
)));
}
public IEnumerable <(ECPoint PublicKey, BigInteger Votes)> GetCandidates(StoreView snapshot)
{
byte[] prefix_key = StorageKey.CreateSearchPrefix(Id, new[] { Prefix_Candidate });
return(snapshot.Storages.Find(prefix_key).Select(p =>
(
p.Key.Key.AsSerializable <ECPoint>(1),
p.Value.GetInteroperable <CandidateState>()
)).Where(p => p.Item2.Registered).Select(p => (p.Item1, p.Item2.Votes)));
}
private void Destroy(ApplicationEngine engine)
{
UInt160 hash = engine.CallingScriptHash;
StorageKey ckey = CreateStorageKey(Prefix_Contract).Add(hash);
ContractState contract = engine.Snapshot.TryGet(ckey)?.GetInteroperable<ContractState>();
if (contract is null) return;
engine.Snapshot.Delete(ckey);
foreach (var (key, _) in engine.Snapshot.Find(StorageKey.CreateSearchPrefix(contract.Id, ReadOnlySpan<byte>.Empty)))
engine.Snapshot.Delete(key);
engine.SendNotification(Hash, "Destroy", new VM.Types.Array { hash.ToArray() });
}
private void WriteStorages(UInt160 scriptHash)
{
if (scriptHash != null)
{
var contractState = NativeContract.ContractManagement.GetContract(Snapshot, scriptHash);
if (contractState != null)
{
var storages = Snapshot.Find(StorageKey.CreateSearchPrefix(contractState.Id, default));
traceDebugSink.Storages(scriptHash, storages);
}
}
}
public JObject?ExpressGetContractStorage(JArray @params)
{
var scriptHash = UInt160.Parse(@params[0].AsString());
var contract = NativeContract.ContractManagement.GetContract(neoSystem.StoreView, scriptHash);
if (contract == null)
{
return(null);
}
var storages = new JArray();
byte[] prefix = StorageKey.CreateSearchPrefix(contract.Id, default);
using var snapshot = neoSystem.GetSnapshot();
foreach (var(key, value) in snapshot.Find(prefix))
{
var storage = new JObject();
storage["key"] = key.Key.ToHexString();
storage["value"] = value.Value.ToHexString();
storages.Add(storage);
}
return(storages);
}
