// The HandleChangeAsync method is called for every observed Realm file
// whenever it has changes. It is called with a change event which contains
// a version of the Realm from before and after the change, as well as
// collections of all objects which were added, deleted, or modified in this change
public override async Task HandleChangeAsync(IChangeDetails details)
{
Console.WriteLine("I'm listening!!!!!!!");
//TODO: add this code
//if (details.TryGetValue("Coupon", out var changeSetDetails) &&
// changeSetDetails.Insertions.Length > 0)
//{
// // Extract the user ID from the virtual path, assuming that we're using
// // a filter which only subscribes us to updates of user-scoped Realms.
// var userId = details.RealmPath.Split(new[] { '/' }, StringSplitOptions.RemoveEmptyEntries)[0];
// using (var realm = details.GetRealmForWriting())
// {
// foreach (var coupon in changeSetDetails.Insertions.Select(c => c.CurrentObject))
// {
// var isValid = await CouponVerifier.VerifyAsync(coupon, userId);
// // Create a ThreadSafeReference of the coupon. While both
// // details.CurrentRealm and details.GetRealmForWriting() are open
// // on the same thread, they are at different versions, so you need
// // to pass the Coupon between them either via ThreadSafeReference
// // or by its PrimaryKey.
// var writeableCoupon = realm.ResolveReference(ThreadSafeReference.Create(coupon));
// // It may be null if the coupon was deleted by the time we get here
// if (writeableCoupon != null)
// {
// realm.Write(() => writeableCoupon.IsValid = isValid);
// }
// }
// }
//}
}
public override Task HandleChangeAsync(IChangeDetails details)
{
try
{
if (details.Changes.TryGetValue("Task", out var changeSetDetails))
{
//if (changeSetDetails.Insertions.Any())
//{
// var newTasks = (from m in changeSetDetails.Insertions
// let obj = m.CurrentObject
// let text = (string)obj.Title
// select new TaskItem {
// Id = (string)obj.Id,
// Reference = ThreadSafeReference.Create(obj),
// Text = text,
// Realm = details.GetRealmForWriting()
// })
// .ToList();
// newTasks.ForEach(t => newTaskSubject.OnNext(t));
//}
if (changeSetDetails.Modifications.Any())
{
var modifiedTasks = (from m in changeSetDetails.Modifications
//where m.CurrentObject != null && m.PreviousObject != null
//group m by m.CurrentObject.Id into g
//let obj = g.Last().CurrentObject
//let text = (string)obj.Title
let obj = m.CurrentObject
let text = (string)obj.Title
select new TaskItem
{
Id = (string)obj.Id,
Reference = ThreadSafeReference.Create(obj),
Text = text,
Realm = details.GetRealmForWriting()
})
.ToList();
modifiedTasks.ForEach(t => modifiedTaskSubject.OnNext(t));
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine(ex.StackTrace);
}
return(Task.CompletedTask);
}
/// <summary> /// A method invoked by the <see cref="INotifier"/> when a Realm has changed and /// <see cref="ShouldHandle"/> has returned <c>true</c>. /// </summary> /// <param name="details"> /// An instance of <see cref="IChangeDetails"/>, containing detailed information /// about the changes that have occurred in the Realm. /// </param> /// <returns> /// An awaitable task that, upon completion, signifies that the changes have been processed. /// </returns> /// <remarks> /// Handlers will be invoked sequentially in the order in which they have been supplied /// in the <see cref="NotifierConfiguration.Handlers"/>. /// <para/> /// This method will be invoked sequentially for Realms with the same path and in parallel /// for different Realms. This means that if the processing takes a lot of time, it will /// build up a queue of changes for that Realm path but will not affect notifications from /// other Realms. /// </remarks> public abstract Task HandleChangeAsync(IChangeDetails details);
public override async Task HandleChangeAsync(IChangeDetails details)
{
if (details.Changes.TryGetValue("Ticket", out var changeSetDetails) &&
changeSetDetails.Insertions.Length > 0)
{
// A new thread has been started - run sentiment analysis.
try
{
var tickets = changeSetDetails.Insertions
.Select(i => i.CurrentObject)
.Select(o => (string)(o.Title + Environment.NewLine + o.Description))
.ToArray();
if (tickets.Length == 0)
{
return;
}
Console.WriteLine($"Requesting sentiment score for {tickets.Length} objects...");
var sentimentRequest = tickets.Select((text, index) => new SentimentDocument
{
Id = index.ToString(),
Text = text,
Language = "en"
})
.Cast <IDocument>()
.ToList();
var sentimentResponse = await _sentimentClient.GetSentimentAsync(new SentimentRequest
{
Documents = sentimentRequest
});
foreach (var error in sentimentResponse.Errors)
{
Console.WriteLine("Error from sentiment API: " + error.Message);
}
Console.WriteLine($"Requesting key phrases for {tickets.Length} objects...");
var keyPhraseRequest = tickets.Select((text, index) => new KeyPhraseDocument
{
Id = index.ToString(),
Text = text,
Language = "en"
})
.Cast <IDocument>()
.ToList();
var keyPhraseResponse = await _keyPhraseClient.GetKeyPhrasesAsync(new KeyPhraseRequest
{
Documents = keyPhraseRequest
});
foreach (var error in keyPhraseResponse.Errors)
{
Console.WriteLine("Error from KeyPhrase API: " + error.Message);
}
var keyPhraseDictionary = keyPhraseResponse.Documents.ToDictionary(d => d.Id, d => d.KeyPhrases);
var toUpdate = sentimentResponse.Documents
.Select(doc =>
{
var obj = changeSetDetails.Insertions[int.Parse(doc.Id)].CurrentObject;
if (!keyPhraseDictionary.TryGetValue(doc.Id, out var keyPhrases) ||
keyPhrases == null)
{
keyPhrases = new List <string> {
"Unknown"
};
}
Console.WriteLine("------------------");
Console.WriteLine($"Analyzed: {obj.Title}");
Console.WriteLine($"Score: {doc.Score}");
Console.WriteLine($"KeyPhrases: {string.Join(", ", keyPhrases)}");
Console.WriteLine("------------------");
return(new
{
Score = doc.Score,
Reference = ThreadSafeReference.Create(obj),
KeyPhrases = keyPhrases
});
})
.ToArray();
using (var realm = details.GetRealmForWriting())
{
var resolved = toUpdate.Select(t => new
{
Score = t.Score,
Object = realm.ResolveReference(t.Reference),
KeyPhrases = t.KeyPhrases
})
.ToArray();
realm.Write(() =>
{
foreach (var item in resolved)
{
item.Object.Score = item.Score;
item.Object.Tags = string.Join(" ", item.KeyPhrases);
}
});
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine(ex.StackTrace);
}
}
}
public Task HandleChangeAsync(IChangeDetails details) => Task.CompletedTask;
public Task HandleChangeAsync(IChangeDetails details) => _handleChanges(details);