mmm​.s‑ol.nu

pleasant experiments and FPGAs
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Yesterday I got client-side access to the whole mmmfs tree to work via the new web datastore, but the requests were still extremely inefficient. This was because the organisation of the interface between the Fileder implementation and the datastore, which required the Fileder to make two separate requests to ?index to fetch its children and facets, and also couldn’t take advantage of the ?tree pseudo-facet to bundle together multiple indexes in a single request.

To fix this I added a new datastore method called get_index that returns both facet and child information [e2a4257] The Fileder implementation now uses this method instead of asking individually for the two pieces of information when lazy-loading fileder contents. The get_index method can also be instructed to recursively load to a fixed depth. A Fileder can also be instantiated using such a nested index, which causes it to immediately preload up to the same depth without the need for fetching more data. This allows some more optimizations, like having the client preload 3-levels deep when it launches, which seems like a decent heuristic of the data actually required for most pages and minimizes load time.

I also added some tests for the Key class that I use in many different places to represent facet names and types [782d072]].

The ?interactive pseudo-facet from yesterday was changed to the text/html+interactive type instead [8cdf5d4]. This was a bit of a tough decision, because it is a bit un-idiomatic: rendering the browser page still requires an exception in the browser. In the end the motivation for the change was that it should be possible, for user ergonomics, to link to the interactive view of a given facet of a given fileder. With ?interactive being a facet, it wasn’t possible to specify the facet without jumping out of the adressing system. With these updates on the other hand it is possible to link fo example: