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();
}
