public StoreMetaDataCache(IReadOnlyStore store, byte prefix, Func <T> factory = null)
: base(factory)
{
this.store = store;
this.snapshot = store as ISnapshot;
this.prefix = prefix;
}
public static void RegisterHandlers(IReadOnlyStore readOnlyStore, IServiceBus serviceBus)
{
_serviceBus = serviceBus;
RegisterCommandHandler(new ProductListCommandHandlers());
RegisterEventHandler(new ProductListEventHandlers(readOnlyStore));
}
public static void Integrate <A, B>(IReadOnlyStore <A> source, IStore <B> destination, IdMap <A, B> idMap)
{
var listA = source.List();
foreach (var id in listA)
{
if (!idMap.ContainsKey(id))
{
TextReader reader = source.Get(id);
B newId = destination.Store(reader);
idMap.Add(id, newId);
}
}
var syncA = idMap.Keys;
foreach (var syncId in syncA)
{
if (!listA.Contains(syncId))
{
B idB = idMap[syncId];
destination.Delete(idB);
idMap.Remove(syncId);
}
}
}
public bool IsSameStore(IReadOnlyStore other)
{
if (other is DiskReadOnlyStore dros)
{
return(dros.Path == Path);
}
return(false);
}
public static byte[]? TryGet(this TrackingMap trackingMap, IReadOnlyStore store, byte[]?key)
{
key ??= Array.Empty <byte>();
if (trackingMap.TryGetValue(key, out var mapValue))
{
return(mapValue.Match <byte[]?>(v => v.ToArray(), _ => null));
}
return(store.TryGet(key));
}
/// <summary>
/// Copies blobs from <paramref name="source"/> store to <paramref name="destination"/> store.
/// Also, this checks that the blobs exist, and that there is no error in the hash of those blobs.
/// When these checks fail, an exception is raised, and the task fails.
/// </summary>
/// <param name="hashes">designates the blobs to be copied</param>
/// <param name="accountId">the account of <paramref name="source"/> store. only helps with error messages</param>
/// <returns></returns>
public static async Task <WrittenBlob[]> ImportBlobs(
this IWriteOnlyStore destination,
IReadOnlyStore source,
IReadOnlyCollection <Hash> hashes,
long?accountId = null,
CancellationToken cancel = default)
{
var checkExistTasks = hashes.Select(
h => source[h].ExistsAsync(cancel)
).ToArray();
bool[] exist = await Task.WhenAll(checkExistTasks);
int i = 0;
foreach (var h in hashes)
{
if (!exist[i])
{
throw new NoSuchBlobException(accountId?.ToString() ?? "<unknown>", h);
}
}
var copyTasks = hashes.Select(
h => destination.ImportBlobUnchecked(source[h], cancel)).ToArray();
var writtenBlobs = await Task.WhenAll(copyTasks).ConfigureAwait(false);
List <(Hash orig, Hash result)> badHashes = null;
i = 0;
foreach (var orig in hashes)
{
var blob = writtenBlobs[i++];
if (!blob.Hash.Equals(orig))
{
badHashes = badHashes ?? new List <(Hash orig, Hash result)>();
badHashes.Add((orig, blob.Hash));
}
}
if (badHashes != null)
{
string details = string.Join("\n", badHashes.Select(_ => $" {accountId}/{_.orig}: {_.result}"));
throw new Exception("Bad hash(es) detected: " + details);
}
return(writtenBlobs);
}
/// <summary>
/// Initializes a new instance of the <see cref="SnapshotCache"/> class.
/// </summary>
/// <param name="store">An <see cref="IReadOnlyStore"/> to create a readonly cache; or an <see cref="ISnapshot"/> to create a snapshot cache.</param>
public SnapshotCache(IReadOnlyStore store)
{
this.store = store;
this.snapshot = store as ISnapshot;
}
public StoreDataCache(IReadOnlyStore store, byte prefix)
{
this.store = store;
this.snapshot = store as ISnapshot;
this.prefix = prefix;
}
public Snapshot(IReadOnlyStore store, TrackingMap trackingMap, Action <TrackingMap> commitAction)
{
this.store = store;
this.trackingMap = trackingMap;
this.commitAction = commitAction;
}
public static IEnumerable <DebugInfo> Find(IReadOnlyStore store)
{
return(store
.Seek(DEBUG_INFO_PREFIX, Array.Empty <byte>(), Neo.IO.Caching.SeekDirection.Forward)
.Select(t => t.Value.AsSerializable <DebugInfo>()));
}
public static DebugInfo?TryGet(IReadOnlyStore store, UInt160 scriptHash)
{
var value = store.TryGet(DEBUG_INFO_PREFIX, scriptHash.ToArray());
return(value == null ? null : value.AsSerializable <DebugInfo>());
}
public bool IsSameStore(IReadOnlyStore other) => ReferenceEquals(other, this);
public static IEnumerable <(byte[] Key, byte[] Value)> Seek(this TrackingMap trackingMap, IReadOnlyStore store, byte[]?key, SeekDirection direction)
{
key ??= Array.Empty <byte>();
if (key.Length == 0 && direction == SeekDirection.Backward)
{
return(Enumerable.Empty <(byte[] key, byte[] value)>());
}
var comparer = direction == SeekDirection.Forward
? ReadOnlyMemoryComparer.Default
: ReadOnlyMemoryComparer.Reverse;
var memoryItems = trackingMap
.Where(kvp => kvp.Value.IsT0)
.Where(kvp => key.Length == 0 || comparer.Compare(kvp.Key, key) >= 0)
.Select(kvp => (Key: kvp.Key.ToArray(), Value: kvp.Value.AsT0.ToArray()));
var storeItems = store
.Seek(key, direction)
.Where <(byte[] Key, byte[] Value)>(kvp => !trackingMap.ContainsKey(kvp.Key));
return(memoryItems.Concat(storeItems).OrderBy(kvp => kvp.Key, comparer));
}
public ReadOnlyView(IReadOnlyStore store)
{
this.store = store;
}
public MemoryTrackingStore(IReadOnlyStore store)
{
this.store = store;
}
static void TraceBlock(Uri uri, Block block, ProtocolSettings settings, IConsole console, UInt256?txHash = null)
{
IReadOnlyStore roStore = block.Index > 0
? new StateServiceStore(uri, block.Index - 1)
: NullStore.Instance;
using var store = new MemoryTrackingStore(roStore);
using var snapshot = new SnapshotCache(store.GetSnapshot());
using (var engine = ApplicationEngine.Create(TriggerType.OnPersist, null, snapshot, block, settings, 0))
{
using var sb = new ScriptBuilder();
sb.EmitSysCall(ApplicationEngine.System_Contract_NativeOnPersist);
engine.LoadScript(sb.ToArray());
if (engine.Execute() != VMState.HALT)
{
throw new InvalidOperationException("NativeOnPersist operation failed", engine.FaultException);
}
}
var clonedSnapshot = snapshot.CreateSnapshot();
for (int i = 0; i < block.Transactions.Length; i++)
{
Transaction tx = block.Transactions[i];
using var engine = GetEngine(tx, clonedSnapshot);
if (engine is TraceApplicationEngine)
{
console.Out.WriteLine($"Tracing Transaction #{i} ({tx.Hash})");
}
else
{
console.Out.WriteLine($"Executing Transaction #{i} ({tx.Hash})");
}
engine.LoadScript(tx.Script);
if (engine.Execute() == VMState.HALT)
{
clonedSnapshot.Commit();
}
else
{
clonedSnapshot = snapshot.CreateSnapshot();
}
}
ApplicationEngine GetEngine(Transaction tx, DataCache snapshot)
{
if (txHash == null || txHash == tx.Hash)
{
var path = SysIO.Path.Combine(Environment.CurrentDirectory, $"{tx.Hash}.neo-trace");
var sink = new TraceDebugStream(SysIO.File.OpenWrite(path));
return(new TraceApplicationEngine(sink, TriggerType.Application, tx, snapshot, block, settings, tx.SystemFee));
}
else
{
return(ApplicationEngine.Create(TriggerType.Application, tx, snapshot, block, settings, tx.SystemFee));
}
}
}