Avoid useless call to schema load api on repo import

[ogenstad]

I noticed locally that I had a repo import fail because the schema load API timed out after two minutes, however I didn't have any schemas within my repo so the API should never have been called.

There's also a problem on the actual API in the sense that it can waste time and resources if a user calls it with an empty array. If this is done we can either report it as a user error alternatively we send back a SchemaUpdate indicating that the hash remained the same and that there were no updates. Thoughts around this?

Targeting stable so it's included in 1.0.1.

[codspeed-hq]

CodSpeed Performance Report

Merging #4796 will improve performances by 31.91%

_{Comparing pog-avoid-schema-load-api (db6aba2) with stable (2e89e34)}

Summary

⚡ 1 improvements
✅ 9 untouched benchmarks

Benchmarks breakdown

	Benchmark	stable	pog-avoid-schema-load-api	Change
⚡	test_schemabranch_duplicate	409.4 µs	310.3 µs	+31.91%

[dgarros]

Should we also look into why the schema load API timeout in the first place or was it expected in your environment ?

[ogenstad]

Should we also look into why the schema load API timeout in the first place or was it expected in your environment ?

Yes that would be good. Though I couldn't recreate that specific issue after trying again. I just saw that I had a timeout error in the task log that I didn't expect and tracked it down to this call. But will be on the lookout if I specifically see the actual timeout again.