add button to reload data buckets for each layer

[MichaelBuessemeyer]

This PR adds a button to reload all cached buckets of a data layer in the frontend.

URL of deployed dev instance (used for testing):

• https://___.webknossos.xyz

Steps to test:

• Open a tracing and the dataset settings.
• Click on the reload icon above the histogram of any layer.
• A toast should indicate the success of dropping the cached buckets.
• Now move a bit around to trigger the reloading of the bucket.
• If there are multiple layers, only the data buckets of the selected layer should be reloaded.

Issues:

• fixes Add "reload" button per layer #4335

---

• Updated changelog
• [ ] Updated migration guide if applicable
• [ ] Updated documentation if applicable
• [ ] Adapted wk-connect if datastore API changes
• Needs datastore update after deployment
• Ready for review

[MichaelBuessemeyer]

ToDo:

• Check support for segmentation layer

[fm3]

I think the backend should also be adapted (change the clear bucket cache api so it supports selecting the layer), right?

[philippotto]

I think the backend should also be adapted (change the clear bucket cache api so it supports selecting the layer), right?

If it's quick to implement, then, yes. Otherwise, it's not that big of a deal to clear the entire dataset, I think. As long as the local buckets are not discarded for all layers, the UX will be fine, at least.

[philippotto]

We shouldn't force the user to move around to see the new data. Setting window.needsRerender = true; above should do the trick here :)

[MichaelBuessemeyer]

This does not work for me. Do you have any other suggestions or know why it might not be working?

[philippotto]

Hm, let's have a look together at this.

[MichaelBuessemeyer]

maybe this helps app.vent.trigger("rerender"); 🤷‍♂️ . Just saw it in our code base.

[philippotto]

I had a look and fixed it now :) The layer rendering manager had to be refreshed.

[youri-k]

@MichaelBuessemeyer I just pushed the necessary changes, so the backend can clear the cache of one layer only. I also added the new layerName attribute to the routes in the admin_rest_api. Hope this helps 🙂

[youri-k]

@fm3 could you review the backend part? Thanks 😄

[fm3]

Backend LGTM

[MichaelBuessemeyer]

ToDo:

• Check support for segmentation layer

works perfectly.

[MichaelBuessemeyer]

@MichaelBuessemeyer I just pushed the necessary changes, so the backend can clear the cache of one layer only. I also added the new layerName attribute to the routes in the admin_rest_api. Hope this helps 🙂

Thanks a lot @youri-k

[philippotto]

@MichaelBuessemeyer Awesome stuff! Only a minor request from my side:

Could you move the reload/find-data buttons so that they align with the right side of the histogram? Right now, it looks a bit weird in my opinion 🙈

[MichaelBuessemeyer]

@philippotto Could you please review my changes? I arranged the buttons with the right edge of the histogram.

[philippotto]

Awesome! I'm very looking forward to this feature :)