refactor: clean up the Kubernetes resource matchers - #3546
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- GenericKubernetesResourceMatcher allocated the path-prefix lists (List.of(SPEC), List.of(METADATA), the labels/annotations pair, List.of(STATUS)) once per JSON-diff node while matching, and nodeIsChildOf built a stream per call. Both run for every node of every match, so hoist the lists to constants and use an indexed loop. - SSABasedGenericKubernetesResourceMatcher#sanitizeState nested the StatefulSet volume-claim-template handling four levels deep inside the type ladder; extract it into sanitizeVolumeClaimTemplates so the ladder reads as one dispatch per resource kind.
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Pull request overview
This PR performs a small internal refactor of the Kubernetes resource matching/sanitization utilities in the operator framework core, focusing on reducing per-node allocations during JSON patch matching and flattening the SSA sanitizer’s kind-specific logic for StatefulSets.
Changes:
- Hoist frequently recreated JSON-path prefix lists in
GenericKubernetesResourceMatcherinto static constants and replace a per-call stream with an indexed loop. - Extract StatefulSet
volumeClaimTemplatessanitization fromsanitizeStateinto a dedicated helper method for readability.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/dependent/kubernetes/SSABasedGenericKubernetesResourceMatcher.java | Extracts StatefulSet volumeClaimTemplates sanitization into sanitizeVolumeClaimTemplates to simplify the dispatch ladder. |
| operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/dependent/kubernetes/GenericKubernetesResourceMatcher.java | Reduces allocation overhead by hoisting prefix lists and replacing stream().anyMatch(...) with a simple loop. |
(List.of(SPEC), List.of(METADATA), the labels/annotations pair, List.of(STATUS))
once per JSON-diff node while matching, and nodeIsChildOf built a stream per
call. Both run for every node of every match, so hoist the lists to constants
and use an indexed loop.
volume-claim-template handling four levels deep inside the type ladder;
extract it into sanitizeVolumeClaimTemplates so the ladder reads as one
dispatch per resource kind.
Quality-only change: no intended behavior difference. Cut from
nextandtouches a disjoint set of files from the sibling cleanup PRs, so it can be merged
independently and in any order.
Verified on this branch alone:
mvn -o -pl operator-framework-core,operator-framework-junit -am test(693 core + 6 junit tests, no failures) and
mvn spotless:check.