/// <summary>
///
/// </summary>
/// <param name="blockGraph"></param>
/// <returns></returns>
private async Task <BlockGraph> SignBlockGraph(BlockGraph blockGraph)
{
Guard.Argument(blockGraph, nameof(blockGraph)).NotNull();
await _signing.GetOrUpsertKeyName(_signing.DefaultSigningKeyName);
var signature = await _signing.Sign(_signing.DefaultSigningKeyName, blockGraph.ToHash());
var pubKey = await _signing.GetPublicKey(_signing.DefaultSigningKeyName);
blockGraph.PublicKey = pubKey;
blockGraph.Signature = signature;
return(blockGraph);
}
/// <summary>
///
/// </summary>
public async Task <byte[]> GetPublicKey()
{
byte[] publicKey = null;
try
{
publicKey = await _signingProvider.GetPublicKey(_signingProvider.DefaultSigningKeyName);
}
catch (Exception ex)
{
_logger.Here().Error(ex, "Unable to get the public key");
}
return(publicKey);
}
/// <summary>
///
/// </summary>
/// <param name="applicationLifetime"></param>
/// <returns></returns>
public async Task StartAsync(IHostApplicationLifetime applicationLifetime)
{
if (_serfClient.ProcessStarted)
{
return;
}
if (_serfClient.SerfConfigurationOptions.Disabled)
{
Disabled = true;
return;
}
if (IsRunning())
{
_logger.Here().Warning("Serf is already running. It's OK if you are running on a different port.");
}
var useExisting = await TryUseExisting();
if (useExisting)
{
_serfClient.ProcessStarted = true;
_logger.Here().Information("Process Id cannot be found at this moment.");
return;
}
try
{
applicationLifetime.ApplicationStopping.Register(() =>
{
try
{
var process = Process.GetProcessById(_serfClient.ProcessId);
process?.Kill();
}
catch (Exception)
{
// ignored
}
});
var pubKey = await _signing.GetPublicKey(_signing.DefaultSigningKeyName);
_serfClient.Name = $"{_serfClient.SerfConfigurationOptions.NodeName}-{Helper.Util.Sha384ManagedHash(pubKey).ByteToHex().Substring(0, 16)}";
var serfPath = GetFilePath();
_logger.Here().Information("Serf assembly path: {@SerfPath}", serfPath);
// Chmod before attempting to execute serf on Linux and Mac
if (new[] { OSPlatform.Linux, OSPlatform.OSX }.Contains(Helper.Util.GetOperatingSystemPlatform()))
{
_logger.Here().Information("Granting execute permission on serf assembly");
var chmodCmd = Cli.Wrap("chmod")
.WithArguments(a => a
.Add("+x")
.Add(serfPath));
await chmodCmd.ExecuteAsync();
}
var cmd = Cli.Wrap(serfPath)
.WithArguments(a => a
.Add("agent")
.Add($"-bind={_serfClient.SerfConfigurationOptions.Listening}")
.Add($"-rpc-addr={_serfClient.SerfConfigurationOptions.RPC}")
.Add($"-advertise={_serfClient.SerfConfigurationOptions.Advertise}")
.Add($"-encrypt={ _serfClient.SerfConfigurationOptions.Encrypt}")
.Add($"-node={_serfClient.Name}")
.Add($"-snapshot={_serfClient.SerfConfigurationOptions.SnapshotPath}")
.Add($"-rejoin={_serfClient.SerfConfigurationOptions.Rejoin}")
.Add($"-broadcast-timeout={_serfClient.SerfConfigurationOptions.BroadcastTimeout}")
.Add($"-retry-max={_serfClient.SerfConfigurationOptions.RetryMax}")
.Add($"-log-level={_serfClient.SerfConfigurationOptions.Loglevel}")
.Add($"-profile={_serfClient.SerfConfigurationOptions.Profile}")
.Add("-tag")
.Add($"rest={_serfClient.ApiConfigurationOptions.Advertise}")
.Add("-tag")
.Add($"pubkey={pubKey.ByteToHex()}")
.Add("-tag")
.Add($"nodeversion={Assembly.GetExecutingAssembly().GetName().Version}"));
await cmd.Observe().ForEachAsync(cmdEvent =>
{
switch (cmdEvent)
{
case StartedCommandEvent started:
_logger.Here().Information("Process started; ID: {@ID}", started.ProcessId);
_serfClient.ProcessId = started.ProcessId;
break;
case StandardOutputCommandEvent stdOut:
if (stdOut.Text.Contains("agent: Serf agent starting"))
{
_logger.Here().Information("Serf has started!");
_serfClient.ProcessStarted = true;
}
_logger.Here().Debug("Out> {@StdOut}", stdOut.Text);
break;
case StandardErrorCommandEvent stdErr:
_logger.Here().Error("Err> {@StdErr}", stdErr.Text);
_serfClient.ProcessError = stdErr.Text;
break;
case ExitedCommandEvent exited:
_logger.Here().Information("Process exited; Code: {@ExitCode}", exited.ExitCode);
applicationLifetime.StopApplication();
break;
}
}, applicationLifetime.ApplicationStopping).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.Here().Error(ex, "Unable to initialize Serf");
applicationLifetime.StopApplication();
}
}
