Create an endpoint to trigger asset summary generation

[waxlamp]

Yarik wrote:

@dchiquito do you see an easy quick way to trigger that offband generation of summaries for all dandisets?
may be we should expose some /updateInternal endpoint for each dandiset to facilitate such/similar updates in the future?

Originally posted by @yarikoptic in #389 (comment)

I would recommend the endpoint PUT /dandisets/{versions__dandiset__pk}/versions/{versions__version}/assets/summary for this purpose.

Design doc: https://github.com/dandi/dandi-api/blob/master/doc/design/scheduled-tasks.md

[satra]

since the summary is at the dandiset level, perhaps:

/dandisets/{versions__dandiset__pk}/versions/{versions__version}/summary

note that at present any update to metadata should also trigger summarization, perhaps the summary endpoint is better, but it does also need to be triggered on a delay timer (relative to last asset update; preferred) or a cron-job (fallback).

however, more generally, we should consider how much of this should be in the api or part of the server workflow.

[yarikoptic]

it does also need to be triggered on a delay timer (relative to last asset update; preferred)

Back ref #385

[dchiquito]

Doing a PUT ../versions/{version_id} that is a no-op will update assetsSummary.

What exactly was the use case for this endpoint? assetsSummary should be recomputed whenever changes are made.

[yarikoptic]

relates to #431 as might be providing a workaround for testing if this end-point would cause the task without any delay

[waxlamp]

@dchiquito, what's the status on this issue?

[dchiquito]

I can see this being useful as way to quickly flush the asset summary queue when running tests. Right now the test has to wait at max 60s for the job to run, which is never a nice thing to do in a test.
This would be a nice optimization for the CLI tests, but it is a non-blocker.

[dchiquito]

It's possible it might resolve the flaky test issues we've been seeing with asset summary validation #567 (comment)
Perhaps it's worth looking at sooner rather than later.