static void Main(string[] args)
{
try
{
// Create the platform session.
ISession session = GlobalSettings.Sessions.GetSession();
// Open the session
session.Open();
// ********************************************************************************************
// Headline Alert Endpoint URL.
// ********************************************************************************************
const string alertHeadlinesEndpoint = "https://api.refinitiv.com/alerts/v1/news-headlines-subscriptions";
// Determine if we are using an existing queue or creating one. The QueueManager will assist us here.
IQueueManager manager = DeliveryFactory.CreateQueueManager(new QueueManager.Params().Session(session)
.Endpoint(alertHeadlinesEndpoint)
.OnError((qm, err) => Console.WriteLine(err)));
// First, check to see if we have any news headline queues active in the cloud, if not, create one.
List <IQueue> queues = manager.GetAllQueues();
// Determine if we retrieved anything...create one if not.
IQueue queue = (queues?.Count > 0 ? queues[0] : manager.CreateQueue());
// Ensure our queue is created
if (queue != null)
{
Console.WriteLine($"{Environment.NewLine}{(queues.Count > 0 ? "Using existing" : "Created a new")} queue...");
// Start polling for news headline messages from the queue
// A QueueSubscriber provides the mechanisms to poll the queue and capture each headline alert via lambda expressions
IQueueSubscriber subscriber = DeliveryFactory.CreateQueueSubscriber(
new AWSQueueSubscriber.Params().Queue(queue)
.WithMessagePollingInterval(1)
.OnResponse((s, response) =>
{
if (response.IsSuccess)
{
DisplayHeadline(response.Data.Raw);
}
else
{
Console.WriteLine(response.Status);
}
}));
// Open the subscriber to begin polling for messages
subscriber.StartPolling();
Console.WriteLine("Polling for messages from the queue...hit any key to stop polling");
// Hit any key to stop...
Console.ReadKey();
// Close the subscription - stops polling for messages
subscriber.StopPolling();
Console.WriteLine($"{Environment.NewLine}Stopped polling for messages from the queue.");
// Prompt the user to delete the queue
Console.Write("Delete the queue (Y/N) [N]: ");
var delete = Console.ReadLine();
if (delete?.ToUpper() == "Y")
{
if (manager.DeleteQueue(queue))
{
Console.WriteLine("Successfully deleted queue.");
}
else
{
Console.WriteLine($"Issues deleting queue {manager.Error}");
}
}
}
}
catch (Exception e)
{
Console.WriteLine($"\n**************\nFailed to execute: {e.Message}\n***************");
}
}
static void Main(string[] _)
{
const string newsStoriesEndpoint = "https://api.refinitiv.com/message-services/v1/news-stories/subscriptions";
try
{
using (ISession session = Configuration.Sessions.GetSession())
{
// Open the session
session.Open();
// Create our stories definition
var definition = Queue.Definition(newsStoriesEndpoint);
// Create a QueueManager to actively manage our queues
IQueueManager manager = definition.CreateQueueManager().OnError((err, qm) => Console.WriteLine(err));
// First, check to see if we have any news headline queues active in the cloud...
var queues = manager.GetAllQueues();
// If no existing queue exists, create one.
IQueueNode queue = (queues.Count > 0 ? queues[0] : manager.CreateQueue());
// Ensure our queue is created
if (queue != null)
{
Console.WriteLine($"{Environment.NewLine}{(queues.Count > 0 ? "Using existing" : "Created a new")} queue. Waiting for stories...");
// Subscribe to the queue.
// Note: The subscriber interface has 2 mechanisms to retrieve data from the queue. The first mechanism is to selectively
// poll the queue for new messages. The second mechanism is to define a callback/lambda expression and notify the
// the subscriber to poll for messages as they come in - this mechansim provides a near realtime result.
//
// The following example demonstrates the second mechanism.
IQueueSubscriber subscriber = definition.CreateAWSSubscriber(queue);
// Open the subscriber to begin polling for messages. Use Async() as this method is a long running task.
var task = subscriber.StartPollingAsync((story, s) => DisplayStory(story));
Console.ReadKey();
// Close the subscription - stops polling for messages
subscriber.StopPolling();
task.GetAwaiter().GetResult();
Console.WriteLine("Stopped polling for messages from the queue.");
// Prompt the user to delete the queue
Console.Write("Delete the queue (Y/N) [N]: ");
var delete = Console.ReadLine();
if (delete?.ToUpper() == "Y")
{
if (manager.DeleteQueue(queue))
{
Console.WriteLine("Successfully deleted queue.");
}
else
{
Console.WriteLine($"Issues deleting queue.");
}
}
}
}
}
catch (Exception e)
{
Console.WriteLine($"\n**************\nFailed to execute: {e.Message}\n{e.InnerException}\n***************");
}
}