static bool TryGetDeploymentSigner(ConfigProps config, ExpressChain?chain, byte version, [MaybeNullWhen(false)] out Signer signer)
{
if (config.TryGetValue("deploy-signer", out var deploySignerToken))
{
return(TryParseSigner(deploySignerToken, chain, version, out signer));
}
signer = default;
return(false);
}
static async Task <IApplicationEngine> CreateEngineAsync(ConfigProps config)
{
if (!config.TryGetValue("invocation", out var jsonInvocation))
{
throw new JsonException("missing invocation property");
}
if (jsonInvocation.Type == JTokenType.Object && jsonInvocation["trace-file"] != null)
{
var traceFile = jsonInvocation.Value <string>("trace-file") ?? throw new JsonException("invalid trace-file property");
var program = ParseProgram(config);
var launchContract = LoadNefFile(program);
var contracts = new List <NefFile> {
launchContract
};
// TODO: load other contracts?
return(new TraceApplicationEngine(traceFile, contracts));
}
return(await CreateDebugEngineAsync(config, jsonInvocation).ConfigureAwait(false));
}
static async Task <IApplicationEngine> CreateDebugEngineAsync(ConfigProps config, JToken jsonInvocation)
{
var program = ParseProgram(config);
var launchNefFile = LoadNefFile(program);
var launchManifest = await LoadContractManifestAsync(program).ConfigureAwait(false);
var chain = LoadNeoExpress(config);
var invocation = ParseInvocation(jsonInvocation);
var checkpoint = LoadBlockchainCheckpoint(config, chain?.Network, chain?.AddressVersion);
var(trigger, witnessChecker) = ParseRuntime(config, chain, checkpoint.Settings.AddressVersion);
if (trigger != TriggerType.Application)
{
throw new Exception($"Trigger Type {trigger} not supported");
}
var signers = ParseSigners(config, chain, checkpoint.Settings.AddressVersion).ToArray();
var store = new MemoryTrackingStore(checkpoint);
store.EnsureLedgerInitialized(checkpoint.Settings);
Script invokeScript;
var attributes = Array.Empty <TransactionAttribute>();
if (invocation.IsT3) // T3 == ContractDeploymentInvocation
{
if ((signers.Length == 0 || (signers.Length == 1 && signers[0].Account == UInt160.Zero)) &&
TryGetDeploymentSigner(config, chain, checkpoint.Settings.AddressVersion, out var deploySigner))
{
signers = new[] { deploySigner };
}
using var builder = new ScriptBuilder();
builder.EmitDynamicCall(NativeContract.ContractManagement.Hash, "deploy", launchNefFile.ToArray(), launchManifest.ToJson().ToString());
invokeScript = builder.ToArray();
}
else
{
var paramParser = CreateContractParameterParser(checkpoint.Settings.AddressVersion, store, chain);
var deploySigner = TryGetDeploymentSigner(config, chain, checkpoint.Settings.AddressVersion, out var _deploySigner)
? _deploySigner
: new Signer {
Account = UInt160.Zero
};
var(launchContractId, launchContractHash) = EnsureContractDeployed(store, launchNefFile, launchManifest, deploySigner, checkpoint.Settings);
UpdateContractStorage(store, launchContractId, ParseStorage(config, paramParser));
invokeScript = await CreateInvokeScriptAsync(invocation, program, launchContractHash, paramParser);
if (invocation.IsT1) // T1 == OracleResponseInvocation
{
attributes = GetTransactionAttributes(invocation.AsT1, store, launchContractHash, paramParser);
}
}
// TODO: load other contracts
// Not sure supporting other contracts is a good idea anymore. Since there's no way to calculate the
// contract id hash prior to deployment in Neo 3, I'm thinking the better approach would be to simply
// deploy whatever contracts you want and take a snapshot rather than deploying multiple contracts
// during launch configuration.
var tx = new Transaction
{
Version = 0,
Nonce = (uint)new Random().Next(),
Script = invokeScript,
Signers = signers,
ValidUntilBlock = checkpoint.Settings.MaxValidUntilBlockIncrement,
Attributes = attributes,
Witnesses = Array.Empty <Witness>()
};
var block = CreateDummyBlock(store, tx);
var engine = new DebugApplicationEngine(tx, store, checkpoint.Settings, block, witnessChecker);
engine.LoadScript(invokeScript);
return(engine);
static string ParseProgram(ConfigProps config) => config["program"].Value <string>() ?? throw new JsonException("missing program property");