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[release/v25.1.x] operator: handle ServiceMonitorList's Items#920

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chrisseto merged 1 commit intorelease/v25.1.xfrom
backport/release/v25.1.x/pr-918
Jun 16, 2025
Merged

[release/v25.1.x] operator: handle ServiceMonitorList's Items#920
chrisseto merged 1 commit intorelease/v25.1.xfrom
backport/release/v25.1.x/pr-918

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Backport

This will backport the following commits from main to release/v25.1.x:

Questions ?

Please refer to the Backport tool documentation

Previously the lifecycle client would panic if > 0 ServiceMonitors were found
in `listResources` due to Items being `[]*T` instead of the standard `[]T`.

```
interface conversion: **v1.ServiceMonitor is not client.Object: missing method DeepCopyObject
github.com/go-logr/logr.Logger.Error
        /root/go/pkg/mod/github.com/go-logr/logr@v1.4.2/logr.go:301
k8s.io/apimachinery/pkg/util/runtime.logPanic
        /root/go/pkg/mod/k8s.io/apimachinery@v0.33.1/pkg/util/runtime/runtime.go:142
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller[...]).Reconcile.func1
        /root/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.20.4/pkg/internal/controller/controller.go:108
runtime.gopanic
        /nix/store/5xvi25nqmbrg58aixp4zgczilfnp7pwg-go-1.24.3/share/go/src/runtime/panic.go:792
runtime.getitab
        /nix/store/5xvi25nqmbrg58aixp4zgczilfnp7pwg-go-1.24.3/share/go/src/runtime/iface.go:55
runtime.typeAssert
        /nix/store/5xvi25nqmbrg58aixp4zgczilfnp7pwg-go-1.24.3/share/go/src/runtime/iface.go:474
github.com/redpanda-data/redpanda-operator/operator/internal/lifecycle.(*ResourceClient[...]).listResources
        /work/operator/internal/lifecycle/client.go:278
github.com/redpanda-data/redpanda-operator/operator/internal/lifecycle.(*ResourceClient[...]).listAllOwnedResources
        /work/operator/internal/lifecycle/client.go:290
github.com/redpanda-data/redpanda-operator/operator/internal/lifecycle.(*ResourceClient[...]).SyncAll
        /work/operator/internal/lifecycle/client.go:95
github.com/redpanda-data/redpanda-operator/operator/internal/controller/redpanda.(*RedpandaReconciler).reconcileResources
        /work/operator/internal/controller/redpanda/redpanda_controller.go:315
github.com/redpanda-data/redpanda-operator/operator/internal/controller/redpanda.(*RedpandaReconciler).Reconcile
        /work/operator/internal/controller/redpanda/redpanda_controller.go:208
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller[...]).Reconcile
        /root/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.20.4/pkg/internal/controller/controller.go:119
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller[...]).reconcileHandler
        /root/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.20.4/pkg/internal/controller/controller.go:334
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller[...]).processNextWorkItem
        /root/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.20.4/pkg/internal/controller/controller.go:294
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller[...]).Start.func2.2
        /root/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.20.4/pkg/internal/controller/controller.go:255
```

This commit implements `kube.Items` to provide a standard panic free way of
extracting the items from a Kubernetes object list. This method was opted for
as reproducing a panic would otherwise require installing Prometheus' CRDs into
our test environments for an issue that occurs 100% on the client side.

(cherry picked from commit 33fda60)
@chrisseto chrisseto merged commit eda76c5 into release/v25.1.x Jun 16, 2025
11 checks passed
@RafalKorepta RafalKorepta deleted the backport/release/v25.1.x/pr-918 branch June 16, 2025 17:38
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