void SubscribeNewsUpdates(Action<NewsDTO> onUpdate, Action<Exception> onError)
{
_client = new Client(RPC_URI);
_client.BeginLogIn(USERNAME, PASSWORD,
ar =>
{
try
{
_client.EndLogIn(ar);
Debug.WriteLine("Login ok");
_streamingClient = StreamingClientFactory.CreateStreamingClient(
STREAMING_URI, USERNAME, _client.SessionId);
_streamingClient.Connect();
Debug.WriteLine("\r\n\r\n\r\n\r\n\r\nStreaming connected ok");
_newsListener = _streamingClient.BuildListener<NewsDTO>("NEWS.MOCKHEADLINES.UK");
_newsListener.MessageRecieved +=
(s, e) =>
{
var msg = e.Data.Headline;
Debug.WriteLine(msg);
//onUpdate(e.Data);
};
_newsListener.Start();
Debug.WriteLine("\r\n\r\n\r\n\r\n\r\nListener started ok");
}
catch (Exception exc)
{
onError(exc);
}
}, null);
}
private void ToggleSubscribeButton_Click(object sender, RoutedEventArgs e)
{
if (ToggleSubscribeButtonlabel.Text == "Subscribe")
{
_rcpClient = new Rpc.Client(new Uri(RpcUriTextbox.Text));
var userName = UserNameTextbox.Text;
var streamingUri = new Uri(StreamingUriTextbox.Text);
var topic = TopicTextbox.Text;
Log("Creating session...");
_rcpClient.BeginLogIn(userName, PasswordTextbox.Text, loginResult =>
{
try
{
_rcpClient.EndLogIn(loginResult);
_logger.DebugFormat("Session is: {0}", _rcpClient.SessionId);
Log("Creating streaming client...");
_streamingClient = StreamingClientFactory.CreateStreamingClient(streamingUri, userName, _rcpClient.SessionId);
_streamingClient.StatusChanged += (s, message)
=> Log(string.Format("Status update: {0}", message.Status));
_streamingClient.Connect();
Log("Listening to news stream...");
_newsListener = _streamingClient.BuildListener<NewsDTO>(topic);
_newsListener.Start();
_newsListener.MessageRecieved += (s, message) =>
{
try
{
NewsDTO recievedNewsHeadline = message.Data;
Log(
string.Format(
"Recieved: NewsDTO: StoryId {0}, Headline {1}, PublishDate = {2}",
recievedNewsHeadline.StoryId, recievedNewsHeadline.Headline,
recievedNewsHeadline.PublishDate.ToString("u")));
}
catch (Exception exception)
{
_logger.Error("Exception occured:", exception);
}
};
}
catch (Exception exception)
{
_logger.Error("Exception occured:", exception);
}
}, null);
ToggleSubscribeButtonlabel.Text = "Stop";
}
else
{
try
{
Log("Stopping listening to news stream...");
// D: abbreviating conditionals makes it hard to step
// and is also a good way to get bugs. you may notice that I always use
// blocks.
if (_newsListener != null)
{
_newsListener.Stop();
}
Log("Disconnecting from streaming server...");
if (_streamingClient != null)
{
_streamingClient.Disconnect();
}
Log("Deleting session...");
if (_rcpClient != null )
{
// REMOVEME: i commented this out and still getting the ObjectDisposed exception
// so it is not in the RpcClient
_rcpClient.BeginLogOut(logoutResult =>
{
// FIXME: id/session invalid - getting back LoggedOut: false
/*do nothing*/
var breakTarget = 0;
}, null);
}
}
catch (Exception exception)
{
_logger.Error("Exception occured:", exception);
}
ToggleSubscribeButtonlabel.Text = "Subscribe";
}
}
