public ApplicationEngine?Create(TriggerType trigger, IVerifiable container, DataCache snapshot, Block persistingBlock, ProtocolSettings settings, long gas, Diagnostic?diagnostic)
{
if (trigger == TriggerType.Application &&
container is Transaction tx &&
tx.Witnesses != null &&
tx.Witnesses.Length > 0 &&
EnumerateContractCalls(tx.Script).Any())
{
var path = SysIO.Path.Combine(Environment.CurrentDirectory, $"{tx.Hash}.neo-trace");
var sink = new TraceDebugStream(SysIO.File.OpenWrite(path));
return(new TraceApplicationEngine(sink, trigger, container, snapshot, persistingBlock, settings, gas, diagnostic));
}
return(null);
}
static void TraceBlock(Uri uri, Block block, ProtocolSettings settings, IConsole console, UInt256?txHash = null)
{
IReadOnlyStore roStore = block.Index > 0
? new StateServiceStore(uri, block.Index - 1)
: NullStore.Instance;
using var store = new MemoryTrackingStore(roStore);
using var snapshot = new SnapshotCache(store.GetSnapshot());
using (var engine = ApplicationEngine.Create(TriggerType.OnPersist, null, snapshot, block, settings, 0))
{
using var sb = new ScriptBuilder();
sb.EmitSysCall(ApplicationEngine.System_Contract_NativeOnPersist);
engine.LoadScript(sb.ToArray());
if (engine.Execute() != VMState.HALT)
{
throw new InvalidOperationException("NativeOnPersist operation failed", engine.FaultException);
}
}
var clonedSnapshot = snapshot.CreateSnapshot();
for (int i = 0; i < block.Transactions.Length; i++)
{
Transaction tx = block.Transactions[i];
using var engine = GetEngine(tx, clonedSnapshot);
if (engine is TraceApplicationEngine)
{
console.Out.WriteLine($"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));
}
}
}
