And that's such a horrendously inefficient way to do that
Gotta go, I'll be back. You submitted an issue for this anyway, righ?
Is it reasonable to set a UserId Header on any session like this? Do people something similar or is putting a user id on metadata not something you usually want to do?
public class ScopedSessionFactory: ISessionFactory
{
private readonly IDocumentStore store;
private readonly IUserService userService;
public ScopedSessionFactory(IDocumentStore store, IUserService userService)
{
this.store = store;
this.userService = userService;
}
public IQuerySession QuerySession()
{
return store.QuerySession();
}
public IDocumentSession OpenSession()
{
var session = store.LightweightSession();
var userId = userService.GetUserId();
session.SetHeader("UserId", userId);
return session;
}
}Are these diagnostic messages normal/expected? I get them several times per second
`
[14:31:51 INF] High Water agent is stale after threshold of 3 seconds, skipping gap to events marked after 08/08/2022 12:30:20 +00:00
[14:31:51 INF] Daemon projection high water detection skipping a gap in event sequence, determined that the 'safe harbor' sequence is at null
`
You can bump up that “stale time” if you have long running transactions in your system that make it look like it’s stale
Marten should be putting tombstone events in place of the failed events, but maybe we've never tested that workflow in the case of serialization failures earlier in the SaveChanges() call.
Im using System.text.json + https://github.com/Tarmil/FSharp.SystemTextJson and I actually like it. It gives some errors as kind of expected but actually now I have a model that I am happy with. I.e. strings are now not nullable but need to be "string option" (FsharpOption) and null will error on de/serializing
To balance that, F# user experience will be my next goal after merging Upcasters PR. If you could write up all of your challenges in the GH issue, then I could try to include that.
Still, I need to learn F# language and idiomatic approach better, so it’ll take some time
It's not something that always happens and I haven't been able to reliably recreate it, but ive taken to putting an extra ToString on all my header calls
Tested with Newtonsoft and fsharp types are serialized okish, however the deserialization format for options and discriminated unions is imho not ideal. For both types are different json representations possible, Ill try write a blogpost about my experiences but not yet sure when...
Do you think that being able to do custom serialization like in my PR would help? JasperFx/marten#2314
2 replies
In theory, it’s more for event schema migration, but I was thinking of making it more generic also for documents as the next step
What is the default for
AutoCreateSchemaObjects if it's not specified? I have queries periodically failing for a service running in Google Cloud Run with timeouts like so. Just wondering what could be the reason.---> System.TimeoutException: The operation has timed out.
at Weasel.Core.Migrations.TimedLock.Lock(TimeSpan timeout)
at Weasel.Core.Migrations.DatabaseBase`1.generateOrUpdateFeature(Type featureType, IFeatureSchema feature, CancellationToken token)
at Weasel.Core.Migrations.DatabaseBase`1.ensureStorageExists(IList`1 types, Type featureType, CancellationToken token)
at Marten.Linq.MartenLinqQueryProvider.ensureStorageExistsAsync(LinqHandlerBuilder builder, CancellationToken cancellationToken)
at Marten.Linq.MartenLinqQueryProvider.ExecuteAsync[TResult](Expression expression, CancellationToken token)
My assumption is that the default is
None, but why is it then trying to apply migrations
Looking at the sauce the default appears to be
CreateOrUpdate ouch
@EgorPavlikhin_twitter It's
CreateOrUpdate to enable quick developer starts. Check out this topic maybe: https://martendb.io/configuration/optimized_artifact_workflow.html
The only implication is that patching documents won't work
@grzybsonssg No, the method call parser business is only used for Where() clauses -- but feel free to open an issue for some kind of extension for this. I think we've added an
OrderBy() overload extension method that lets you feed in raw SQL. That might be easier than mucking with Linq.
Or, easiest, make a read-only getter property that calculates that value and it'll get serialized into the JSON and you'll be able to order or search on that at will. Kinda like building an index for that expression
@pnjakste Here's a rundown of the functionality that won't exist w/o PLv8: https://martendb.io/documents/plv8.html.
@phillip-haydon The compiled query class itself just defines the SQL and the “plan” to get results out of the SQL. To run a compiled query asynchronously, it’s just this method: https://github.com/JasperFx/marten/blob/master/src/Marten/IQuerySession.cs#L204
Use this parent class: https://github.com/JasperFx/marten/blob/master/src/Marten/Linq/ICompiledQuery.cs#L38. Then pass that into
IQuerySession.QueryAsync(compiled query) and you get Task<IReadOnlyList<T>>