public async Task StartAsync(CancellationToken cancel)
{
var ptcv = PrintToConsole ? 1 : 0;
using var process = Start($"{NetworkTranslator.GetCommandLineArguments(Network)} -datadir=\"{DataDir}\" -printtoconsole={ptcv}", false);
await PidFile.WriteFileAsync(process.Id).ConfigureAwait(false);
CachedPid = process.Id;
string latestFailureMessage = null;
while (true)
{
var ex = await RpcClient.TestAsync().ConfigureAwait(false);
if (ex is null)
{
Logger.LogInfo($"RPC connection is successfully established.");
break;
}
else if (latestFailureMessage != ex.Message)
{
latestFailureMessage = ex.Message;
Logger.LogInfo($"{Constants.BuiltinBitcoinNodeName} is not yet ready... Reason: {latestFailureMessage}");
}
if (process is null || process.HasExited)
{
throw new BitcoindException($"Failed to start daemon, location: '{process?.StartInfo.FileName} {process?.StartInfo.Arguments}'", ex);
}
if (cancel.IsCancellationRequested)
{
await StopAsync(true).ConfigureAwait(false);
cancel.ThrowIfCancellationRequested();
}
await Task.Delay(100).ConfigureAwait(false); // So to leave some breathing room before the next check.
}
}
/// <summary>
/// This method can be called only once.
/// </summary>
public async Task StartAsync(CancellationToken cancel)
{
int ptcv = PrintToConsole ? 1 : 0;
string processPath = MicroserviceHelpers.GetBinaryPath("bitcoind");
string networkArgument = NetworkTranslator.GetCommandLineArguments(Network);
string args = $"{networkArgument} -datadir=\"{DataDir}\" -printtoconsole={ptcv}";
// Start bitcoind process.
Process = new ProcessAsync(ProcessStartInfoFactory.Make(processPath, args));
Process.Start();
// Store PID in PID file.
await PidFile.WriteFileAsync(Process.Id).ConfigureAwait(false);
CachedPid = Process.Id;
try
{
var exceptionTracker = new LastExceptionTracker();
// Try to connect to bitcoin daemon RPC until we succeed.
while (true)
{
try
{
TimeSpan timeSpan = await RpcClient.UptimeAsync(cancel).ConfigureAwait(false);
Logger.LogInfo("RPC connection is successfully established.");
Logger.LogDebug($"RPC uptime is: {timeSpan}.");
// Bitcoin daemon is started. We are done.
break;
}
catch (Exception ex)
{
ExceptionInfo exceptionInfo = exceptionTracker.Process(ex);
// Don't log extensively.
if (exceptionInfo.IsFirst)
{
Logger.LogInfo($"{Constants.BuiltinBitcoinNodeName} is not yet ready... Reason: {exceptionInfo.Exception.Message}");
}
if (Process is { } p&& p.HasExited)
{
throw new BitcoindException($"Failed to start daemon, location: '{p.StartInfo.FileName} {p.StartInfo.Arguments}'", ex);
}
}
if (cancel.IsCancellationRequested)
{
Logger.LogDebug("Bitcoin daemon was not started yet and user requested to cancel the operation.");
await StopAsync(onlyOwned : true).ConfigureAwait(false);
cancel.ThrowIfCancellationRequested();
}
// Wait a moment before the next check.
await Task.Delay(100, cancel).ConfigureAwait(false);
}
}
catch (Exception)
{
Process?.Dispose();
throw;
}
}