/// <summary>
/// disptach each hashtag to the appropriate grain, using the hashtag as the grain key
/// </summary>
/// <param name="score"></param>
/// <param name="hashtags"></param>
/// <param name="tweet"></param>
/// <returns></returns>
public async Task AddScore(int score, string[] hashtags, string tweet)
{
// fan out to the grains for all hashtags to set their scores
var tasks = new List <Task>();
foreach (var hashtag in hashtags)
{
var grain = HashtagGrainFactory.GetGrain(0, hashtag);
var task = grain.AddScore(score, tweet);
tasks.Add(task);
}
await Task.WhenAll(tasks);
}
/// <summary>
/// retrieve the totals for a set of hashtags
/// </summary>
/// <param name="hashtags"></param>
/// <returns></returns>
public async Task <Totals[]> GetTotals(string[] hashtags)
{
// fan out to the grains for all hashtags to retrieve their scores
var tasks = new List <Task <Totals> >();
foreach (var hashtag in hashtags)
{
var grain = HashtagGrainFactory.GetGrain(0, hashtag);
tasks.Add(grain.GetTotals());
}
await Task.WhenAll(tasks);
return(tasks.Select(x => x.Result).ToArray());
}