public async Task HandleAsync(TCommand command, CancellationToken cancellationToken = default)
{
if (command == null)
{
throw new ArgumentNullException(nameof(command));
}
Guid? userId = null;
string clientId = null;
if (command is IOperationCommand operationCommand)
{
userId = operationCommand.OperatorId;
clientId = operationCommand.ClientId;
}
EventLog log = null;
try
{
var result = await ExecuteAsync(new CommandExectionContext <TCommand>(command), cancellationToken);
if (result.IsHandled)
{
log = _logBuilder.Create(userId, clientId, command, new AffectedAggregatesDescriptor
{
Aggregates = result.AffectedAggregates,
Count = result.AffectedAggregatesCount,
Type = result.AffectedAggregateType,
});
}
}
catch (ValidationException ex)
{
throw ex;
}
catch (Exception ex)
{
log = _logBuilder.Create(userId, clientId, command, null, ex);
_logger.LogError(ex, $"命令处理时出现异常,DateTime:{DateTime.Now},CommandType:{command.GetType().Name}");
throw ex;
}
if (log != null)
{
try
{
await _eventLogStore.LogAsync(log);
}
catch (Exception ex)
{
_logger.LogError(ex, $"命令处理后,在本地记录日志时出现异常,DateTime:{DateTime.Now},CommandType:{command.GetType().Name}");
}
try
{
await _eventPublisher.PublishAsync($"log.{log.Source}.{command.GetRoutingKey()}", log, cancellationToken);
}
catch (Exception ex)
{
_logger.LogError(ex, $"命令处理后,在事件发布时出现异常,DateTime:{DateTime.Now},CommandType:{command.GetType().Name}");
}
}
}