private void OnUserAddedToDataStore(object sender, UserChangedEventArgs args)
{
_stream.PauseStream();
if (args.NewUser != null)
{
_stream.AddFollow(args.NewUser.Id);
}
if (args.OldUser != null)
{
_stream.RemoveFollow(args.OldUser.Id);
}
_stream.ResumeStream();
}
/// <summary>
/// Starts a Twitter Stream based on the specified geographic coordinates and the now playing hash tag
/// </summary>
/// <param name="latitude1">Latitude of user location (bottom_left)</param>
/// <param name="longitude1">Longitude of user location (bottom_left)</param>
/// <param name="latitude2">Latitude of user location (top_right)</param>
/// <param name="longitude2">Longitude of user location (top_right)</param>
public static async Task StartStream(double latitude1, double longitude1, double latitude2, double longitude2)
{
// Setup Twitter credentials
TweetinviUtilities.SetTwitterCredentials();
// If the stream does not exists...
if (_stream == null)
{
//...then it is started
// Create a filtered stream
_stream = Stream.CreateFilteredStream();
_stream.AddTrack(Constants.NOWPLAYING_HASHTAG); // Lookup for nowplaying hashtag
// OPTIONAL: if you want to see how the feed is updated really quick, just comment the following line of code.
// You will see the effect of "infinite scroll" in the client
_stream.AddLocation(
new Coordinates(latitude1, longitude1),
new Coordinates(latitude2, longitude2)); // Lookup in the specific geographic coordinates
// OPTIONAL: if you want to filter the stream just for a specific user, uncomment the following line of code
//_stream.AddFollow(2834545563);
// Event that handles a matching tweet
_stream.MatchingTweetReceived += async(sender, args) =>
{
// A OEmbed tweet is sent to the client
IOEmbedTweet embedTweet = Tweet.GetOEmbedTweet(args.Tweet);
await _context.Clients.All.updateFeed(embedTweet);
};
// Start the stream matching all conditions
await _stream.StartStreamMatchingAllConditionsAsync();
}
else
{
//... otherwise resume it
_stream.ResumeStream();
}
}
private async void MinuteTimerEventHandler(object sender, System.Timers.ElapsedEventArgs e)
{
CheckTwitterFollows();
if (_twitterStream == null)
{
return;
}
switch (_twitterStream.StreamState)
{
case StreamState.Running:
break;
case StreamState.Pause:
_twitterStream.ResumeStream();
break;
case StreamState.Stop:
await _twitterStream.StartStreamMatchingAllConditionsAsync();
break;
}
}
public static async Task StartStream()
{
var consumerKey = Environment.GetEnvironmentVariable("TWITTER_CONSUMER_KEY", EnvironmentVariableTarget.User);
var consumerSecret = Environment.GetEnvironmentVariable("TWITTER_CONSUMER_SECRET", EnvironmentVariableTarget.User);
var accessToken = Environment.GetEnvironmentVariable("TWITTER_ACCESS_TOKEN", EnvironmentVariableTarget.User);
var accessTokenSecret = Environment.GetEnvironmentVariable("TWITTER_ACCESS_TOKEN_SECRET", EnvironmentVariableTarget.User);
var credentials = Auth.SetUserCredentials(consumerKey, consumerSecret, accessToken, accessTokenSecret);
if (_stream == null)
{
_stream = Stream.CreateFilteredStream(credentials);
_stream.AddTrack("#WorldCup");
_stream.MatchingTweetReceived += async(sender, args) =>
{
await HubContext.Clients.All.SendTweet(args.Tweet.FullText);
};
await _stream.StartStreamMatchingAllConditionsAsync();
}
else
{
_stream.ResumeStream();
}
}
