private TransactionExecutingStateSet GetChanges()
{
var changes = _smartContractProxy.GetChanges();
var address = _hostSmartContractBridgeContext.Self.ToStorageKey();
foreach (var key in changes.Writes.Keys)
{
if (!key.StartsWith(address))
{
throw new InvalidOperationException("a contract cannot access other contracts data");
}
}
foreach (var(key, value) in changes.Deletes)
{
if (!key.StartsWith(address))
{
throw new InvalidOperationException("a contract cannot access other contracts data");
}
}
foreach (var key in changes.Reads.Keys)
{
if (!key.StartsWith(address))
{
throw new InvalidOperationException("a contract cannot access other contracts data");
}
}
if (!CurrentTransactionContext.Trace.IsSuccessful())
{
changes.Writes.Clear();
changes.Deletes.Clear();
}
return(changes);
}
public void Execute()
{
var s = CurrentTransactionContext.Trace.StartTime = TimestampHelper.GetUtcNow().ToDateTime();
var methodName = CurrentTransactionContext.Transaction.MethodName;
try
{
if (!_callHandlers.TryGetValue(methodName, out var handler))
{
throw new RuntimeException(
$"Failed to find handler for {methodName}. We have {_callHandlers.Count} handlers: " +
string.Join(", ", _callHandlers.Keys.OrderBy(k => k))
);
}
try
{
var tx = CurrentTransactionContext.Transaction;
var retVal = handler.Execute(tx.Params.ToByteArray());
if (retVal != null)
{
CurrentTransactionContext.Trace.ReturnValue = ByteString.CopyFrom(retVal);
// TODO: Clean up ReadableReturnValue
CurrentTransactionContext.Trace.ReadableReturnValue = handler.ReturnBytesToString(retVal);
}
CurrentTransactionContext.Trace.ExecutionStatus = ExecutionStatus.Executed;
}
catch (TargetInvocationException ex)
{
CurrentTransactionContext.Trace.Error += ex;
CurrentTransactionContext.Trace.ExecutionStatus = ExecutionStatus.ContractError;
}
catch (AssertionException ex)
{
CurrentTransactionContext.Trace.ExecutionStatus = ExecutionStatus.ContractError;
CurrentTransactionContext.Trace.Error += "\n" + ex;
}
catch (Exception ex)
{
// TODO: Simplify exception
CurrentTransactionContext.Trace.ExecutionStatus = ExecutionStatus.ContractError;
CurrentTransactionContext.Trace.Error += "\n" + ex;
}
if (!handler.IsView())
{
var changes = _smartContractProxy.GetChanges();
var address = _hostSmartContractBridgeContext.Self.ToStorageKey();
foreach (var key in changes.Writes.Keys)
{
if (!key.StartsWith(address))
{
throw new InvalidOperationException("a contract cannot access other contracts data");
}
}
foreach (var key in changes.Reads.Keys)
{
if (!key.StartsWith(address))
{
throw new InvalidOperationException("a contract cannot access other contracts data");
}
}
if (!CurrentTransactionContext.Trace.IsSuccessful())
{
changes.Writes.Clear();
}
CurrentTransactionContext.Trace.StateSet = changes;
}
else
{
CurrentTransactionContext.Trace.StateSet = new TransactionExecutingStateSet();
}
}
catch (Exception ex)
{
CurrentTransactionContext.Trace.ExecutionStatus = ExecutionStatus.SystemError;
CurrentTransactionContext.Trace.Error += ex + "\n";
}
finally
{
// TODO: Not needed
Cleanup();
}
var e = CurrentTransactionContext.Trace.EndTime = TimestampHelper.GetUtcNow().ToDateTime();
CurrentTransactionContext.Trace.Elapsed = (e - s).Ticks;
}
