Expiration in R4-RC1

[Marcelo Volmaro]

In the latest beta I setup the expiration of an entity in the following way:

Session.Advanced.GetMetadataFor(value)[Constants.Documents.Expiration.ExpirationDate] = date.ToString("O");

and 

Session.Advanced.GetMetadataFor(value).Remove(Constants.Documents.Expiration.ExpirationDate);

to remove the expiration. That now doesn't even compile since there is no Expiration in Documents. 

What it the correct way to do that now?

[Grisha Kotler]

You can use: Constants.Documents.Metadata.Expires

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[Marcelo Volmaro]

Perfect. And... do I need to enable expiration somewhere? Or it is enabled by default? Because on previous betas, while the metadata was being updated, Raven never expired any document...

You can use: Constants.Documents.Metadata.Expires

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[Grisha Kotler]

You need to enable it in Settings -> Document Revisions

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[Grisha Kotler]

Sorry, there shouldn't be any configuration for document expiration.

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[Marcelo Volmaro]

Ok, so it should work out of the box then...

[Oren Eini (Ayende Rahien)]

Yes, but IIRC, the default config is to expire documents every 5 minutes or so

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[Marcelo Volmaro]

I can confirm you that expiration is not working. It was not working on previous betas neither, but I though it was because, well, it was a beta release.

Right now, I have a DB with some documents that have expiration, the db was running for a couple of days and the documents are still there.

Here you have an extract of the metadata of one document...

"@metadata": {

        "@collection": "AuthenticationTokens",

        "Raven-Clr-Type": "DDS.Webloader.Service.Entities.AuthenticationToken, DDS.Webloader.Service",

        "@expires": "2017-09-14T20:00:31.1727948Z"

   }

Just for you to see that there is actually an expiration date set on the document...

[Fitzchak Yitzchaki]

In order for expiration to be active you need to activate it using the expiration configuration.

Currently it isn't exposed in the studio:

http://issues.hibernatingrhinos.com/issue/RavenDB-8669

The reason that we have this configuration is to let the user activate or disable the expiration on the database level, so for example it would be possible to disable expiration and import old smuggler file with documents that has the @expires which should be expired this way we have an option to import and not delete them right in the import process.

Best Regards,

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[Tal Weiss]

One can activate the expiration bundle by modifying the database record in the studio, right?

Not saying its the best way, but a workaround for now. 

[Oren Eini (Ayende Rahien)]

Yes, but we intentionally don't provide UI for that.

You can do that with a REST call, though

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On Mon, Sep 18, 2017 at 11:00 AM, Tal Weiss <t...@ayende.com> wrote:

One can activate the expiration bundle by modifying the database record in the studio, right?

Not saying its the best way, but a workaround for now. 

[Marcelo Volmaro]

Ok, perfect. How would I enable it then while waiting for RC2? I would like to start testing some of the tools I migrated from Raven 3 to Raven 4, but without expiration it is impossible, as I need the DB to be purged of old documents so it doesn't grow unbounded.

Of course I can create my own expiration method/thread, but I would prefer to use the already existing one... 

[Oren Eini (Ayende Rahien)]

Do a PUT on /admin/databases?name=DB_NAME

The content should the JSON value of the database record (take it from here: http://4.live-test.ravendb.net/studio/index.html#databases/settings/databaseRecord?&database=Northwind )

And add:

"Expiration": { "Active": true }

Note that this will apply expiration only to values created while this is active

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[Fitzchak Yitzchaki]

You can also make a POST request to /admin/expiration/config, see:

https://github.com/ravendb/ravendb/blob/b3a7205a334eb994d1259a0120c93ea4ddd7c46a/src/Raven.Server/Web/System/AdminDatabasesHandler.cs#L397

It expected a json with Active and optional a DeleteFrequencyInSec:

https://github.com/ravendb/ravendb/blob/b3a7205a334eb994d1259a0120c93ea4ddd7c46a/src/Raven.Client/ServerWide/Expiration/ExpirationConfiguration.cs#L7

Best Regards,

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[Fitzchak Yitzchaki]