protected async Task <object> ExecuteCommand(ActionInfo action, IDotvvmRequestContext context, IEnumerable <ICommandActionFilter> methodFilters)
{
// run OnCommandExecuting on action filters
foreach (var filter in methodFilters)
{
await filter.OnCommandExecutingAsync(context, action);
}
object result = null;
Task resultTask = null;
try
{
result = action.Action();
resultTask = result as Task;
if (resultTask != null)
{
await resultTask;
}
}
catch (Exception ex)
{
if (ex is TargetInvocationException)
{
ex = ex.InnerException;
}
if (ex is DotvvmInterruptRequestExecutionException)
{
throw new DotvvmInterruptRequestExecutionException("The request execution was interrupted in the command!", ex);
}
context.CommandException = ex;
}
// run OnCommandExecuted on action filters
foreach (var filter in methodFilters.Reverse())
{
await filter.OnCommandExecutedAsync(context, action, context.CommandException);
}
if (context.CommandException != null && !context.IsCommandExceptionHandled)
{
throw new Exception("Unhandled exception occurred in the command!", context.CommandException);
}
if (resultTask != null)
{
return(TaskUtils.GetResult(resultTask));
}
return(result);
}
public virtual void Send(TMessage message, object context = null)
{
try
{
object cntxt = context;
if (cntxt == null)
{
cntxt = _defaultMessenger;
}
IDictionary <WeakReference, ActionInfo> actions = FindActions(cntxt);
if (actions != null)
{
foreach (var item in actions)
{
object recipient = item.Key.Target;
if (recipient != null) // Otherwise the recipient has died and been garbage collected
{
ActionInfo actionInfo = item.Value;
if (actionInfo.InvokeOnUiThread)
{
Device.BeginInvokeOnMainThread(() => {
actionInfo.Action(message);
});
}
else
{
actionInfo.Action(message);
}
}
}
}
}
catch (Exception ex)
{
Logging.LogException(ex);
throw;
}
}
private static void WaitCallBack(object obj)
{
ActionInfo actionInfo = obj as ActionInfo;
try
{
if (actionInfo.Action != null)
{
actionInfo.Action();
}
else
{
actionInfo.ObjectAction(actionInfo.State);
}
}
catch (Exception ex)
{
}
actionInfo.Status = ActionStatus.Stop;
}
private void TryPublishEvents(EventStream eventStream, ActionInfo successActionInfo)
{
Func <EventStream, bool> tryPublishEventsAction = (stream) => {
try {
_eventPublisher.Publish(stream);
return(true);
}
catch (Exception ex) {
_logger.Error(string.Format("Exception raised when publishing events:{0}", stream.GetStreamInformation()), ex);
return(false);
}
};
if (_retryService.TryAction("TryPublishEvents", () => tryPublishEventsAction(eventStream), 3))
{
successActionInfo.Action(successActionInfo.Data);
}
else
{
_retryService.RetryInQueue(new ActionInfo("TryPublishEvents", (obj) => tryPublishEventsAction(obj as EventStream), eventStream, successActionInfo));
}
}
protected Task ExecuteCommand(ActionInfo action, DotvvmRequestContext context, IEnumerable <ActionFilterAttribute> methodFilters)
{
// run OnCommandExecuting on action filters
foreach (var filter in methodFilters)
{
filter.OnCommandExecuting(context, action);
}
object result = null;
try
{
result = action.Action();
}
catch (Exception ex)
{
if (ex is TargetInvocationException)
{
ex = ex.InnerException;
}
if (ex is DotvvmInterruptRequestExecutionException)
{
throw new DotvvmInterruptRequestExecutionException("The request execution was interrupted in the command!", ex);
}
context.CommandException = ex;
}
// run OnCommandExecuted on action filters
foreach (var filter in methodFilters.Reverse())
{
filter.OnCommandExecuted(context, action, context.CommandException);
}
if (context.CommandException != null && !context.IsCommandExceptionHandled)
{
throw new Exception("Unhandled exception occured in the command!", context.CommandException);
}
return(result as Task ?? (result == null ? TaskUtils.GetCompletedTask() : Task.FromResult(result)));
}
private void TryPersistEvents(EventStreamContext eventStreamContext, ActionInfo successActionInfo)
{
Func <EventStreamContext, bool> tryPersistEventsAction = (context) => {
try {
_eventStore.Append(context.EventStream);
return(true);
}
catch (Exception ex) {
if (ex is ConcurrentException && IsEventStreamCommitted(context.EventStream))
{
return(true);
}
var errorMessage = string.Format("{0} raised when persisting events:{1}", ex.GetType().Name, context.EventStream.GetStreamInformation());
_logger.Error(errorMessage, ex);
if (ex is ConcurrentException)
{
context.SetConcurrentException(new ErrorInfo {
ErrorMessage = errorMessage, Exception = ex
});
return(true);
}
return(false);
}
};
if (_retryService.TryAction("TryPersistEvents", () => tryPersistEventsAction(eventStreamContext), 3))
{
successActionInfo.Action(successActionInfo.Data);
}
else
{
_retryService.RetryInQueue(new ActionInfo("TryPersistEvents", (obj) => tryPersistEventsAction(obj as EventStreamContext), eventStreamContext, successActionInfo));
}
}
