/// <summary>
/// Parses input before pipeline execution.
/// </summary>
protected virtual async Task <int> ParseInput(IReadOnlyList <string> commandLineArguments,
RootSchema root)
{
//TODO: CommandInput.Parse as middleware step
CommandInput input = CommandInputResolver.Parse(commandLineArguments, root.GetCommandNames());
CliContext.Input = input;
return(await ExecuteCommand());
}
/// <inheritdoc/>
public async Task <int> ExecuteCommandAsync(IEnumerable <string> commandLineArguments)
{
_logger.LogInformation("Executing command '{CommandLineArguments}'.", commandLineArguments);
using (IServiceScope serviceScope = _serviceScopeFactory.CreateScope())
{
IServiceProvider provider = serviceScope.ServiceProvider;
ICliContext cliContext = provider.GetRequiredService <ICliContext>();
Guid cliContextId = cliContext.Id;
_logger.LogDebug("New scope created with CliContext {CliContextId}.", cliContextId);
CommandInput input = CommandInputResolver.Parse(commandLineArguments, _rootSchemaAccessor.RootSchema.GetCommandNames());
((CliContext)cliContext).Input = input;
try
{
// Execute middleware pipeline
await RunPipelineAsync(provider, cliContext);
}
catch (Exception ex)
{
_logger.LogDebug("Exception occured. Trying to find exception handler.");
IEnumerable <ICliExceptionHandler> exceptionHandlers = provider.GetServices <ICliExceptionHandler>();
foreach (ICliExceptionHandler handler in exceptionHandlers)
{
if (handler.HandleException(ex))
{
_logger.LogDebug(ex, "Exception handled by {ExceptionHandlerType}.", handler.GetType().FullName);
return(ExitCodes.FromException(ex));
}
}
_logger.LogCritical(ex, "Unhandled exception during command execution.");
throw;
}
finally
{
_logger.LogDebug("Disposed scope with CliContext {CliContextId}.", cliContextId);
}
return(cliContext.ExitCode ?? ExitCodes.Error);
}
}
private async Task RunInteractivelyAsync(RootSchema root)
{
IConsole console = CliContext.Console;
string executableName = CliContext.Metadata.ExecutableName;
do
{
string[]? commandLineArguments = GetInput(console, executableName);
if (commandLineArguments is null)
{
console.ResetColor();
return;
}
CommandInput input = CommandInputResolver.Parse(commandLineArguments, root.GetCommandNames());
CliContext.Input = input; //TODO maybe refactor with some clever IDisposable class
await ExecuteCommand();
console.ResetColor();
}while (!console.GetCancellationToken().IsCancellationRequested);
}
protected override async Task <int> ParseInput(IReadOnlyList <string> commandLineArguments,
RootSchema root)
{
CommandInput input = CommandInputResolver.Parse(commandLineArguments, root.GetCommandNames());
CliContext.Input = input;
if (input.IsInteractiveDirectiveSpecified)
{
CliContext.IsInteractiveMode = true;
// we don't want to run default command for e.g. `[interactive]` but we want to run if there is sth else
if (!input.IsDefaultCommandOrEmpty)
{
await ExecuteCommand();
}
await RunInteractivelyAsync(root);
return(ExitCodes.Success); // called after Ctrl+C
}
return(await ExecuteCommand());
}