Bug-fix: Retry reconciliation on transient errors and stale LB state - #149
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Signed-off-by: jesse.millan <jesse.millan@oracle.com>
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Summary
Harden OCI Native Ingress reconciliation against transient load balancer dependency errors, stale LB state, and IngressClass annotation writes.
Why
OCI load balancer updates do not become visible all at once. The controller can reconcile related resources before a newly created listener, backend set, updated ETag, or IngressClass annotation is visible. These are temporary convergence states, so the controller should keep retrying instead of treating them as final failures.
Manual verification
Verified with OCI Native Ingress CI failures where routing policy/backend reconciliation hit missing backend sets, missing route_443, stale ETags, and a missing LB ID annotation while the LB was still converging. Confirmed the controller now treats those dependency and stale-state paths as transient retries, refreshes LB state before subsequent backend update attempts, and verifies IngressClass annotation writes after patching.
I’ve repeatedly run our product's integration tests in OCI Native mode with this change which creates multiple OCI load balancers with DNS names and certificates across different Ingress configurations, then validates the endpoints end to end. I also reviewed the OCI Load Balancer work requests and OCI Native ingress controller logs during the CI tests. All checks look good with this change.