public async Task Run([CosmosDBTrigger(
databaseName: "TwitterBotDB",
collectionName: "TweetCollection",
ConnectionStringSetting = "CosmosDB:ConnectionString",
LeaseCollectionName = "leases",
CreateLeaseCollectionIfNotExists = true)] IReadOnlyList <Document> documents,
[SignalR(
HubName = "TweetNotificationsHub",
ConnectionStringSetting = "SignalR:ConnectionString")] IAsyncCollector <SignalRMessage> messages,
ILogger log)
{
log.LogInformation("Documents modified " + documents.Count);
foreach (var document in documents)
{
var tweet = await _tweetRepository.GetByIdAsync(document.Id);
var users = _userRepository.GetUsersByHashtags(tweet.Hashtags.Select(p => p.Text).ToArray());
foreach (var user in users)
{
await messages.AddAsync(new SignalRMessage
{
UserId = user.Id,
Target = "updateTweets",
Arguments = new[] { tweet }
});
}
}
await messages.FlushAsync();
}
public async Task Run([TimerTrigger("0 */5 * * * *")] TimerInfo myTimer, ILogger log)
{
var hashTagMessagess = await _serviceBusOperations.ReceiveMessagesAsync();
var hashTags = hashTagMessagess.Select(p => JsonConvert.DeserializeObject <Hashtag>(Encoding.UTF8.GetString(p.Body)));
var erroredHashtags = new List <Hashtag>();
foreach (var hashTag in hashTags)
{
try
{
var tweet = _tweetOperations.GetPopularTweetByHashtag(hashTag);
if (tweet != null)
{
tweet.Hashtags = new List <Hashtag>();
log.LogInformation($"Latest popular tweet for {hashTag.Text} : {tweet.FullText}");
var existingTweet = await _tweetDbRepository.GetByIdAsync(tweet.Id);
if (existingTweet is null)
{
tweet.Hashtags.Add(hashTag);
await _tweetDbRepository.AddOrUpdateAsync(tweet);
log.LogInformation($"Added Tweet in TweetCollection with Id: { tweet.Id }");
}
if (existingTweet != null && !existingTweet.Hashtags.Any(p => p.Text == hashTag.Text))
{
tweet.Hashtags = existingTweet.Hashtags;
tweet.Hashtags.Add(hashTag);
await _tweetDbRepository.AddOrUpdateAsync(tweet);
log.LogInformation($"Updated Tweet in TweetCollection with Id: { tweet.Id }");
}
}
hashTag.IsCurrentlyInQueue = false;
hashTag.LastSyncedDateTime = DateTime.UtcNow;
await _hashtagDbRepository.AddOrUpdateAsync(hashTag);
}
catch (Exception ex)
{
log.LogError(ex, ex.Message);
erroredHashtags.Add(hashTag);
}
}
if (erroredHashtags.Any())
{
throw new TwitterBotBusinessException(erroredHashtags);
}
}
//Read
public async Task <Person> ReadPerson(Person person)
{
return(await _personRepo.GetByIdAsync(person.Id));
}
