private void DispatchCommandWithoutErrorHandling(ICommandInput commandInput, ICommand cmd)
{
if (EnableTrace)
{
Trace.Indent();
Tracer.WriteCommandExecution(commandInput);
}
using (var context = _commandContextFactory.CreateContext(commandInput))
{
cmd.Execute(context);
}
if (EnableTrace)
{
Trace.Unindent();
}
}
protected override async Task ExecuteAsync(
CancellationToken stoppingToken)
{
_logger.LogWarning(
"Starting LineReaderService. Console output may appear " +
"garbled.");
// HACK: Since the command store has no way of getting *all*
// registered commands, we have to do this currently
var commandCount = ((List <ICommand>)_commandStore.GetType()
.GetField("_currentCommands",
BindingFlags.NonPublic | BindingFlags.Instance) !
.GetValue(_commandStore) !)
.Count;
_logger.LogInformation("Command store contains {count} commands",
commandCount);
// N.B. since Console.ReadLine() can't be cancelled or done
// asynchronously, we forcibly yield here to ensure other services
// can be started.
await Task.Yield();
while (true)
{
stoppingToken.ThrowIfCancellationRequested();
var command = Console.ReadLine();
_logger.LogDebug("Command: {command}", command);
if (command != null)
{
var context = _commandContextFactory.CreateContext();
try
{
_commandParser.Parse(context, command);
}
catch (Exception e)
{
_logger.LogError(e,
"Failed to parse {command}",
command);
continue;
}
foreach (var paramPair in context.Parameters)
{
_logger.LogInformation(
"Parameter {key} ({type}) = {value}",
paramPair.Key,
paramPair.Value?.GetType() ?? typeof(object),
paramPair.Value);
}
await _commandExecutor.ExecuteAsync(context,
stoppingToken);
}
}
}
