public OnlineNode(ProtocolSettings settings, ExpressChain chain, ExpressConsensusNode node)
{
this.ProtocolSettings = settings;
this.chain = chain;
rpcClient = new RpcClient(new Uri($"http://localhost:{node.RpcPort}"), protocolSettings: settings);
consensusNodesKeys = new Lazy <KeyPair[]>(() => chain.GetConsensusNodeKeys());
}
public static void Preload(uint preloadGasAmount, Store store, ExpressConsensusNode node, TextWriter writer, CancellationToken cancellationToken)
{
Debug.Assert(preloadGasAmount > 0);
var wallet = DevWallet.FromExpressWallet(node.Wallet);
using var system = new NeoSystem(store);
var generationAmount = Blockchain.GenerationAmount[0];
var gas = preloadGasAmount / generationAmount;
var preloadCount = preloadGasAmount % generationAmount == 0 ? gas : gas + 1;
writer.WriteLine($"Creating {preloadCount} empty blocks to preload {preloadGasAmount} GAS");
Random random = new Random();
for (int i = 1; i <= preloadCount; i++)
{
if (i % 100 == 0)
{
writer.WriteLine($" Creating Block {i}");
}
var block = CreatePreloadBlock(wallet, random);
var relayResult = system.Blockchain.Ask <RelayResultReason>(block).Result;
if (relayResult != RelayResultReason.Succeed)
{
throw new Exception($"Preload block {i} failed {relayResult}");
}
}
ClaimPreloadGas(system, wallet, random);
writer.WriteLine($"Preload complete. {preloadCount * generationAmount} GAS loaded into genesis account.");
}
public static string GetMultiSigAddress(this ExpressConsensusNode node)
{
var account = DevWalletAccount.FromExpressWalletAccount(node.Wallet.Accounts
.Single(a => Neo.SmartContract.Helper.IsMultiSigContract(a.Contract.Script.ToByteArray())));
return(account.Address);
}
static RpcServerSettings GetRpcServerSettings(ExpressChain chain, ExpressConsensusNode node)
{
var ipAddress = chain.TryReadSetting <IPAddress>("rpc.BindAddress", IPAddress.TryParse, out var bindAddress)
? bindAddress : IPAddress.Loopback;
var settings = new Dictionary <string, string>()
{
{ "PluginConfiguration:Network", $"{chain.Network}" },
{ "PluginConfiguration:BindAddress", $"{ipAddress}" },
{ "PluginConfiguration:Port", $"{node.RpcPort}" }
};
if (chain.TryReadSetting <decimal>("rpc.MaxGasInvoke", decimal.TryParse, out var maxGasInvoke))
{
settings.Add("PluginConfiguration:MaxGasInvoke", $"{maxGasInvoke}");
}
if (chain.TryReadSetting <decimal>("rpc.MaxFee", decimal.TryParse, out var maxFee))
{
settings.Add("PluginConfiguration:MaxFee", $"{maxFee}");
}
if (chain.TryReadSetting <int>("rpc.MaxIteratorResultItems", int.TryParse, out var maxIteratorResultItems) &&
maxIteratorResultItems > 0)
{
settings.Add("PluginConfiguration:MaxIteratorResultItems", $"{maxIteratorResultItems}");
}
var config = new ConfigurationBuilder().AddInMemoryCollection(settings).Build();
return(RpcServerSettings.Load(config.GetSection("PluginConfiguration")));
}
public async Task RunAsync(IStorageProvider store, ExpressConsensusNode node, bool enableTrace, TextWriter writer, CancellationToken token)
{
if (IsNodeRunning(node))
{
throw new Exception("Node already running");
}
var tcs = new TaskCompletionSource <bool>();
_ = Task.Run(() =>
{
try
{
var linkedToken = CancellationTokenSource.CreateLinkedTokenSource(token);
var defaultAccount = node.Wallet.Accounts.Single(a => a.IsDefault);
using var mutex = new Mutex(true, GLOBAL_PREFIX + defaultAccount.ScriptHash);
var wallet = DevWallet.FromExpressWallet(ProtocolSettings, node.Wallet);
var multiSigAccount = wallet.GetMultiSigAccounts().Single();
var logPlugin = new Node.LogPlugin(writer);
var storageProviderPlugin = new Node.StorageProviderPlugin(store);
var appEngineProvider = enableTrace ? new Node.ApplicationEngineProvider() : null;
var dbftPlugin = new Neo.Consensus.DBFTPlugin(GetConsensusSettings(chain));
var persistencePlugin = new Node.PersistencePlugin(store);
using var neoSystem = new Neo.NeoSystem(ProtocolSettings, storageProviderPlugin.Name);
_ = neoSystem.ActorSystem.ActorOf(EventWrapper <Blockchain.ApplicationExecuted> .Props(OnApplicationExecuted));
var rpcSettings = GetRpcServerSettings(chain, node);
var rpcServer = new Neo.Plugins.RpcServer(neoSystem, rpcSettings);
var expressRpcMethods = new ExpressRpcMethods(neoSystem, store, multiSigAccount.ScriptHash, linkedToken);
rpcServer.RegisterMethods(expressRpcMethods);
rpcServer.RegisterMethods(persistencePlugin);
rpcServer.StartRpcServer();
neoSystem.StartNode(new Neo.Network.P2P.ChannelsConfig
{
Tcp = new IPEndPoint(IPAddress.Loopback, node.TcpPort),
WebSocket = new IPEndPoint(IPAddress.Loopback, node.WebSocketPort),
});
dbftPlugin.Start(wallet);
// DevTracker looks for a string that starts with "Neo express is running" to confirm that the instance has started
// Do not remove or re-word this console output:
writer.WriteLine($"Neo express is running ({store.GetType().Name})");
linkedToken.Token.WaitHandle.WaitOne();
}
catch (Exception ex)
{
tcs.SetException(ex);
}
finally
{
tcs.TrySetResult(true);
}
});
await tcs.Task.ConfigureAwait(false);
static bool IsNodeRunning(ExpressConsensusNode node)
{
// Check to see if there's a neo-express blockchain currently running by
// attempting to open a mutex with the multisig account address for a name
var account = node.Wallet.Accounts.Single(a => a.IsDefault);
return(Mutex.TryOpenExisting(GLOBAL_PREFIX + account.ScriptHash, out var _));
}
public async Task RunAsync(IExpressStore store, ExpressConsensusNode node, uint secondsPerBlock, bool enableTrace, TextWriter writer, CancellationToken token)
{
if (IsRunning(node))
{
throw new Exception("Node already running");
}
chain.InitalizeProtocolSettings(secondsPerBlock);
await writer.WriteLineAsync(store.GetType().Name).ConfigureAwait(false);
var tcs = new TaskCompletionSource <bool>();
_ = Task.Run(() =>
{
try
{
var defaultAccount = node.Wallet.Accounts.Single(a => a.IsDefault);
using var mutex = new Mutex(true, GLOBAL_PREFIX + defaultAccount.ScriptHash);
var wallet = DevWallet.FromExpressWallet(node.Wallet);
var multiSigAccount = node.Wallet.Accounts.Single(a => a.IsMultiSigContract());
var dbftPlugin = new Neo.Consensus.DBFTPlugin();
var logPlugin = new Node.LogPlugin(writer);
var storageProvider = new Node.ExpressStorageProvider((IStore)store);
var appEngineProvider = enableTrace ? new Node.ExpressApplicationEngineProvider() : null;
var appLogsPlugin = new Node.ExpressAppLogsPlugin(store);
using var system = new Neo.NeoSystem(storageProvider.Name);
var rpcSettings = new Neo.Plugins.RpcServerSettings(port: node.RpcPort);
var rpcServer = new Neo.Plugins.RpcServer(system, rpcSettings);
var expressRpcServer = new ExpressRpcServer(store, multiSigAccount);
rpcServer.RegisterMethods(expressRpcServer);
rpcServer.RegisterMethods(appLogsPlugin);
rpcServer.StartRpcServer();
system.StartNode(new Neo.Network.P2P.ChannelsConfig
{
Tcp = new IPEndPoint(IPAddress.Loopback, node.TcpPort),
WebSocket = new IPEndPoint(IPAddress.Loopback, node.WebSocketPort),
});
dbftPlugin.Start(wallet);
token.WaitHandle.WaitOne();
}
catch (Exception ex)
{
tcs.SetException(ex);
}
finally
{
tcs.TrySetResult(true);
}
});
await tcs.Task.ConfigureAwait(false);
}
public static string GetBlockchainPath(this ExpressConsensusNode node)
{
if (node == null)
{
throw new ArgumentNullException(nameof(node));
}
return(node.Wallet.GetBlockchainPath());
}
static bool NodeRunning(ExpressConsensusNode node)
{
// Check to see if there's a neo-express blockchain currently running
// by attempting to open a mutex with the multisig account address for
// a name. If so, do an online checkpoint instead of offline.
if (Mutex.TryOpenExisting(node.GetMultiSigAddress(), out var _))
{
return(true);
}
return(false);
}
public async Task <bool> StopNodeAsync(ExpressConsensusNode node)
{
if (!IsNodeRunning(node))
{
return(false);
}
var rpcClient = new Neo.Network.RPC.RpcClient(new Uri($"http://localhost:{node.RpcPort}"), protocolSettings: ProtocolSettings);
var json = await rpcClient.RpcSendAsync("expressshutdown").ConfigureAwait(false);
var processId = int.Parse(json["process-id"].AsString());
var process = System.Diagnostics.Process.GetProcessById(processId);
await process.WaitForExitAsync().ConfigureAwait(false);
return(true);
}
public static Task RunAsync(Store store, ExpressConsensusNode node, TextWriter writer, CancellationToken cancellationToken)
{
var tcs = new TaskCompletionSource <bool>();
Task.Run(() =>
{
try
{
var wallet = DevWallet.FromExpressWallet(node.Wallet);
using (var system = new NeoSystem(store))
{
var logPlugin = new LogPlugin(writer);
var rpcPlugin = new ExpressNodeRpcPlugin(store);
system.StartNode(node.TcpPort, node.WebSocketPort);
system.StartConsensus(wallet);
system.StartRpc(IPAddress.Loopback, node.RpcPort, wallet);
{
using var snapshot = Blockchain.Singleton.GetSnapshot();
var validators = snapshot.GetValidators();
;
}
cancellationToken.WaitHandle.WaitOne();
}
}
catch (Exception ex)
{
tcs.SetException(ex);
}
finally
{
if (store is IDisposable disposable)
{
disposable.Dispose();
}
tcs.TrySetResult(true);
}
});
return(tcs.Task);
}
public static string GetNodePath(this IFileSystem fileSystem, ExpressConsensusNode node)
{
if (node == null)
{
throw new ArgumentNullException(nameof(node));
}
if (node.Wallet == null)
{
throw new ArgumentNullException(nameof(node.Wallet));
}
var account = node.Wallet.Accounts.Single(a => a.IsDefault);
var rootPath = fileSystem.Path.Combine(
Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData, Environment.SpecialFolderOption.DoNotVerify),
"Neo-Express",
"blockchain-nodes");
return(fileSystem.Path.Combine(rootPath, account.ScriptHash));
}
public void ResetNode(ExpressConsensusNode node, bool force)
{
if (IsNodeRunning(node))
{
var scriptHash = node.Wallet.DefaultAccount?.ScriptHash ?? "<unknown>";
throw new InvalidOperationException($"node {scriptHash} currently running");
}
var nodePath = fileSystem.GetNodePath(node);
if (fileSystem.Directory.Exists(nodePath))
{
if (!force)
{
throw new InvalidOperationException("--force must be specified when resetting a node");
}
fileSystem.Directory.Delete(nodePath, true);
}
}
public IExpressStore GetNodeStore(ExpressConsensusNode node, bool discard)
{
var folder = fileSystem.GetNodePath(node);
if (discard)
{
try
{
var rocksDbStore = RocksDbStore.OpenReadOnly(folder);
return(new CheckpointStore(rocksDbStore));
}
catch
{
return(new CheckpointStore(NullReadOnlyStore.Instance));
}
}
else
{
return(RocksDbStore.Open(folder));
}
}
static RpcServerSettings GetRpcServerSettings(ExpressChain chain, ExpressConsensusNode node)
{
var settings = new Dictionary <string, string>()
{
{ "PluginConfiguration:Network", $"{chain.Network}" },
{ "PluginConfiguration:BindAddress", $"{IPAddress.Loopback}" },
{ "PluginConfiguration:Port", $"{node.RpcPort}" }
};
if (chain.TryReadSetting <long>("rpc.MaxGasInvoke", long.TryParse, out var maxGasInvoke))
{
settings.Add("PluginConfiguration:MaxGasInvoke", $"{maxGasInvoke}");
}
if (chain.TryReadSetting <long>("rpc.MaxFee", long.TryParse, out var maxFee))
{
settings.Add("PluginConfiguration:MaxFee", $"{maxFee}");
}
var config = new ConfigurationBuilder().AddInMemoryCollection(settings).Build();
return(RpcServerSettings.Load(config.GetSection("PluginConfiguration")));
}
public static Uri GetUri(this ExpressConsensusNode node)
=> new Uri($"http://localhost:{node.RpcPort}");
public OnlineNode(ProtocolSettings settings, ExpressChain chain, ExpressConsensusNode node)
{
this.ProtocolSettings = settings;
this.chain = chain;
rpcClient = new RpcClient(new Uri($"http://localhost:{node.RpcPort}"), protocolSettings: settings);
}
public OnlineNode(ExpressChain chain, ExpressConsensusNode node)
{
this.chain = chain;
rpcClient = new RpcClient(node.GetUri());
}