public Task <IEnumerable <SubscribedEvent> > GetArchiveEventsTask(ArchiveParameters archiveParameters)
{
var task = new Task <IEnumerable <SubscribedEvent> >(() =>
{
var result = GetArchiveEvents(archiveParameters);
return(result);
});
return(task);
}
private void OnGetArchiveEventsCommand()
{
var archiveParameters = new ArchiveParameters
{
ChannelId = _channelsViewModel.SelectedChannelId,
DateTimeStart = SelectedDateTimeStart,
DateTimeEnd = SelectedDateTimeEnd,
EventId = _registeredEventsViewModel.SelectedEventInfo.Id
};
var archiveEventsTask = _archiveEventsModel.GetArchiveEventsTask(archiveParameters);
archiveEventsTask.Start();
archiveEventsTask.ContinueWith(t => { ArchiveEvents = t.Result; });
}
private IEnumerable <SubscribedEvent> GetArchiveEvents(ArchiveParameters archiveParameters)
{
var connectionParameters = _connectionParametersModel.ConnectionParameter;
var url = string.Format(ArchiveEventsUrl, connectionParameters.ServerIp,
connectionParameters.Port,
connectionParameters.Login,
Md5Helper.Md5Hash(connectionParameters.Password),
archiveParameters.DateTimeStart,
archiveParameters.DateTimeEnd);
if (archiveParameters.ChannelId != Guid.Empty)
{
url += string.Concat("&channelid=", archiveParameters.ChannelId);
}
if (archiveParameters.EventId != Guid.Empty)
{
url += string.Concat("&eventid=", archiveParameters.EventId);
}
_urlViewer.Url = url;
var responseString = _webRequestFactory.CreateAndGetResult(url);
if (string.IsNullOrEmpty(responseString))
{
return(new List <SubscribedEvent>());
}
var resultsSubscribedEvents = new List <SubscribedEvent>();
var stringBuilder = new List <string>();
using (var reader = new StringReader(responseString))
{
while (reader.Peek() > -1)
{
var line = reader.ReadLine();
if (string.IsNullOrEmpty(line))
{
stringBuilder.Clear();
continue;
}
stringBuilder.Add(line);
if (line != "}")
{
continue;
}
var subscribedEvent = JsonEventParser.ParseEventFromJsonPaylaod(stringBuilder);
if (subscribedEvent == null)
{
continue;
}
resultsSubscribedEvents.Add(subscribedEvent);
}
}
return(resultsSubscribedEvents);
}