Blueprint execution: Split up top-level cleanup implementation #9512
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Before this change, the high-level structure of this was "for each
ready-for-cleanup zone in the blueprint, match on its type and then
maybe perform some cleanup action depending on the type". After this
change, this is inverted: "for each zone type we care about, for each
ready-for-cleanup zone of that type in the blueprint, perform the
relevant cleanup action".
On its face this is a little worse: we now loop over the zones in the
blueprint twice times (currently, because we have two zone types we
care about for cleanup, although a third is implemented and compiled out
for now) instead of once. The intent here is that we're going to attach
a `reason` for why a given caller wants to act on expunged zones, and
it's much clearer if it's broken out this way. For example, in future
work we'll change this:
```rust
let zones_to_clean_up = blueprint
.all_omicron_zones(BlueprintZoneDisposition::is_ready_for_cleanup)
.filter(|(_sled_id, zone)| zone.zone_type.is_oximeter());
```
to something like
```rust
let zones_to_clean_up = blueprint.expunged_oximeter_zones_ready_to_clean_up(
Reason::OximeterProducerReassignment,
);
```
davepacheco
approved these changes
Dec 19, 2025
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davepacheco
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The only comment I had here is tiny and really on the pre-existing code.
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Before this change, the high-level structure of this was "for each ready-for-cleanup zone in the blueprint, match on its type and then maybe perform some cleanup action depending on the type". After this change, this is inverted: "for each zone type we care about, for each ready-for-cleanup zone of that type in the blueprint, perform the relevant cleanup action".
On its face this is a little worse: we now loop over the zones in the blueprint twice (currently, because we have two zone types we care about for cleanup, although a third is implemented and compiled out for now) instead of once. The intent here is that we're going to attach a
reasonfor why a given caller wants to act on expunged zones, and it's much clearer if it's broken out this way. For example, in future work we'll change this:to something like
and it's harder to express some kind of "composite reason" if we were to keep the original structure.