private PerformanceHint GetOrCreatePerformanceHint(out HugeDocumentsDetails details)
{
//Read() is transactional, so this is thread-safe
using (_notificationsStorage.Read(HugeDocumentsId, out var ntv))
{
if (ntv == null || ntv.Json.TryGet(nameof(PerformanceHint.Details), out BlittableJsonReaderObject detailsJson) == false || detailsJson == null)
{
details = new HugeDocumentsDetails();
}
else
{
details = DocumentConventions.DefaultForServer.Serialization.DefaultConverter.FromBlittable <HugeDocumentsDetails>(detailsJson, HugeDocumentsId);
}
string message = $"We have detected that some documents has surpassed the configured size threshold ({new Size(_maxWarnSize, SizeUnit.Bytes)}). It might have performance impact. You can alter warning limits by changing '{RavenConfiguration.GetKey(x => x.PerformanceHints.HugeDocumentSize)}' configuration value.";
return(PerformanceHint.Create(
_database,
"Huge documents",
message,
PerformanceHintType.HugeDocuments,
NotificationSeverity.Warning,
PerformanceHintSource,
details
));
}
}
public async Task Huge_document_hints_are_stored_and_can_be_read()
{
using (var store = GetDocumentStore())
{
var database = await GetDatabase(store.Database);
// this tests write to storage
database.HugeDocuments.AddIfDocIsHuge("orders/1-A", 10 * 1024 * 1024);
// this tests merge with existing item
database.HugeDocuments.AddIfDocIsHuge("orders/2-A", 20 * 1024 * 1024);
database.HugeDocuments.AddIfDocIsHuge("orders/3-A", 30 * 1024 * 1024);
database.HugeDocuments.AddIfDocIsHuge("orders/4-A", 40 * 1024 * 1024);
database.HugeDocuments.UpdateHugeDocuments(null);
Assert.True(database.ConfigurationStorage.NotificationsStorage.GetPerformanceHintCount() > 0);
// now read directly from storage and verify
using (database.ConfigurationStorage.NotificationsStorage.Read(HugeDocuments.HugeDocumentsId, out var ntv))
{
if (ntv == null || ntv.Json.TryGet(nameof(PerformanceHint.Details), out BlittableJsonReaderObject detailsJson) == false || detailsJson == null)
{
Assert.False(true, "Unable to read stored notification");
}
else
{
HugeDocumentsDetails details = (HugeDocumentsDetails)EntityToBlittable.ConvertToEntity(
typeof(HugeDocumentsDetails),
HugeDocuments.HugeDocumentsId,
detailsJson,
DocumentConventions.Default);
Assert.NotNull(details);
Assert.Equal(4, details.HugeDocuments.Count);
var ids = details.HugeDocuments.Values.Select(x => x.Id).ToList();
Assert.Contains("orders/1-A", ids);
Assert.Contains("orders/2-A", ids);
Assert.Contains("orders/3-A", ids);
Assert.Contains("orders/4-A", ids);
}
}
}
}
