private bool ExecuteTransaction(Transaction transaction, Timestamp time, StorageChangeSetContext changeSet, Action <Hash, Event> onNotify, OracleReader oracle, BigInteger minimumFee, out byte[] result)
{
result = null;
var runtime = new RuntimeVM(transaction.Script, this, time, transaction, changeSet, oracle, false);
runtime.MinimumFee = minimumFee;
runtime.ThrowOnFault = true;
var state = runtime.Execute();
if (state != ExecutionState.Halt)
{
return(false);
}
var cost = runtime.UsedGas;
foreach (var evt in runtime.Events)
{
onNotify(transaction.Hash, evt);
}
if (runtime.Stack.Count > 0)
{
var obj = runtime.Stack.Pop();
result = Serialization.Serialize(obj);
}
return(true);
}
public object InvokeContract(string contractName, string methodName, params object[] args)
{
var contract = FindContract <SmartContract>(contractName);
Throw.IfNull(contract, nameof(contract));
var script = ScriptUtils.BeginScript().CallContract(contractName, methodName, args).EndScript();
var changeSet = new StorageChangeSetContext(this.Storage);
var vm = new RuntimeVM(script, this, this.LastBlock, null, changeSet, true);
contract.SetRuntimeData(vm);
var state = vm.Execute();
if (state != ExecutionState.Halt)
{
throw new ChainException($"Invocation of method '{methodName}' of contract '{contractName}' failed with state: " + state);
}
if (vm.Stack.Count == 0)
{
throw new ChainException($"No result, vm stack is empty");
}
var result = vm.Stack.Pop();
return(result.ToObject());
}
internal bool Execute(Chain chain, Block block, StorageChangeSetContext changeSet, Action <Hash, Event> onNotify, out byte[] result)
{
result = null;
var runtime = new RuntimeVM(this.Script, chain, block, this, changeSet, false);
var state = runtime.Execute();
if (state != ExecutionState.Halt)
{
return(false);
}
var cost = runtime.UsedGas;
// fee distribution TODO
// if (chain.NativeTokenAddress != null && cost > 0)
{
//chain.TransferToken(this.PublicKey, chain.DistributionPubKey, cost);
}
foreach (var evt in runtime.Events)
{
onNotify(this.Hash, evt);
}
if (runtime.Stack.Count > 0)
{
var obj = runtime.Stack.Pop();
result = Serialization.Serialize(obj);
}
return(true);
}
internal bool Execute(Chain chain, Block block, StorageChangeSetContext changeSet, Action <Hash, Event> onNotify, OracleReaderDelegate oracleReader, out byte[] result)
{
result = null;
var runtime = new RuntimeVM(this.Script, chain, block, this, changeSet, false);
runtime.ThrowOnFault = true;
runtime.OracleReader = oracleReader;
var state = runtime.Execute();
if (state != ExecutionState.Halt)
{
return(false);
}
var cost = runtime.UsedGas;
foreach (var evt in runtime.Events)
{
onNotify(this.Hash, evt);
}
if (runtime.Stack.Count > 0)
{
var obj = runtime.Stack.Pop();
result = Serialization.Serialize(obj);
}
return(true);
}
private static VMObject ExecuteScript(Chain chain, byte[] script, ContractInterface abi, string methodName, params object[] args)
{
var method = abi.FindMethod(methodName);
if (method == null)
{
throw new Exception("ABI is missing: " + method.name);
}
var changeSet = new StorageChangeSetContext(chain.Storage);
var oracle = chain.Nexus.GetOracleReader();
var vm = new RuntimeVM(-1, script, (uint)method.offset, chain, Address.Null, Timestamp.Now, null, changeSet, oracle, ChainTask.Null, true);
//var vm = new GasMachine(script, (uint)method.offset);
// TODO maybe this needs to be in inverted order?
foreach (var arg in args)
{
vm.Stack.Push(VMObject.FromObject(arg));
}
var result = vm.Execute();
if (result == ExecutionState.Halt)
{
return(vm.Stack.Pop());
}
throw new Exception("Script execution failed for: " + method.name);
}
private bool ExecuteTransaction(int index, Transaction transaction, byte[] script, Address validator, Timestamp time, StorageChangeSetContext changeSet
, Action <Hash, Event> onNotify, OracleReader oracle, ITask task, BigInteger minimumFee, out VMObject result, bool allowModify = true)
{
if (!transaction.HasSignatures)
{
throw new ChainException("Cannot execute unsigned transaction");
}
result = null;
uint offset = 0;
RuntimeVM runtime;
using (var m = new ProfileMarker("new RuntimeVM"))
{
runtime = new RuntimeVM(index, script, offset, this, validator, time, transaction, changeSet, oracle, task, false);
}
runtime.MinimumFee = minimumFee;
ExecutionState state;
using (var m = new ProfileMarker("runtime.Execute"))
state = runtime.Execute();
if (state != ExecutionState.Halt)
{
return(false);
}
//var cost = runtime.UsedGas;
using (var m = new ProfileMarker("runtime.Events"))
{
foreach (var evt in runtime.Events)
{
using (var m2 = new ProfileMarker(evt.ToString()))
if (allowModify)
{
onNotify(transaction.Hash, evt);
}
}
}
if (runtime.Stack.Count > 0)
{
result = runtime.Stack.Pop();
}
// merge transaction oracle data
oracle.MergeTxData();
return(true);
}
private RuntimeVM ExecuteScript(string[] scriptString)
{
var script = BuildScript(scriptString);
var keys = KeyPair.Generate();
var nexus = new Nexus("vmnet", keys.Address, new ConsoleLogger());
var tx = new Transaction(nexus.Name, nexus.RootChain.Name, script, 0, 0);
var changeSet = new StorageChangeSetContext(new MemoryStorageContext());
var vm = new RuntimeVM(tx.Script, nexus.RootChain, null, tx, changeSet, true);
vm.Execute();
return(vm);
}
public VMObject InvokeScript(byte[] script)
{
var changeSet = new StorageChangeSetContext(this.Storage);
var vm = new RuntimeVM(script, this, this.LastBlock, null, changeSet, true);
var state = vm.Execute();
if (state != ExecutionState.Halt)
{
return(null);
}
if (vm.Stack.Count == 0)
{
throw new ChainException($"No result, vm stack is empty");
}
var result = vm.Stack.Pop();
return(result);
}
private bool ExecuteTransaction(int index, Transaction transaction, Timestamp time, StorageChangeSetContext changeSet, Action <Hash, Event> onNotify, OracleReader oracle, BigInteger minimumFee, out byte[] result)
{
result = null;
RuntimeVM runtime;
using (var m = new ProfileMarker("new RuntimeVM"))
runtime = new RuntimeVM(index, transaction.Script, this, time, transaction, changeSet, oracle, false);
runtime.MinimumFee = minimumFee;
runtime.ThrowOnFault = true;
ExecutionState state;
using (var m = new ProfileMarker("runtime.Execute"))
state = runtime.Execute();
if (state != ExecutionState.Halt)
{
return(false);
}
var cost = runtime.UsedGas;
using (var m = new ProfileMarker("runtime.Events"))
{
foreach (var evt in runtime.Events)
{
using (var m2 = new ProfileMarker(evt.ToString()))
onNotify(transaction.Hash, evt);
}
}
if (runtime.Stack.Count > 0)
{
var obj = runtime.Stack.Pop();
result = Serialization.Serialize(obj);
}
return(true);
}
public VMObject InvokeScript(StorageContext storage, byte[] script, Timestamp time)
{
var oracle = Nexus.CreateOracleReader();
var changeSet = new StorageChangeSetContext(storage);
var vm = new RuntimeVM(script, this, time, null, changeSet, oracle, true);
var state = vm.Execute();
if (state != ExecutionState.Halt)
{
return(null);
}
if (vm.Stack.Count == 0)
{
throw new ChainException($"No result, vm stack is empty");
}
var result = vm.Stack.Pop();
return(result);
}
public IAPIResult InvokeRawScript([APIParameter("Address or name of chain", "root")] string chainInput, [APIParameter("Serialized script bytes, in hexadecimal format", "0000000000")] string scriptData)
{
var chain = FindChainByInput(chainInput);
if (chain == null)
{
return(new ErrorResult {
error = "invalid chain"
});
}
byte[] script;
try
{
script = Base16.Decode(scriptData);
}
catch
{
return(new ErrorResult {
error = "Failed to decode script"
});
}
if (script.Length == 0)
{
return(new ErrorResult {
error = "Invalid transaction script"
});
}
var changeSet = new StorageChangeSetContext(chain.Storage);
var vm = new RuntimeVM(script, chain, null, null, changeSet, true);
var state = vm.Execute();
if (state != ExecutionState.Halt)
{
return(new ErrorResult {
error = $"Execution failed, state:{state}"
});
}
string encodedResult;
if (vm.Stack.Count == 0)
{
encodedResult = "";
}
else
{
var temp = vm.Stack.Pop();
var result = temp.ToObject();
var resultBytes = Serialization.Serialize(result);
encodedResult = Base16.Encode(resultBytes);
}
var evts = vm.Events.Select(evt => new EventResult()
{
address = evt.Address.Text, kind = evt.Kind.ToString(), data = Base16.Encode(evt.Data)
});
return(new ScriptResult {
result = encodedResult, events = evts.ToArray()
});
}