Skip unnecessary netbox updates

[MaIT-HA]

(Summary from CoPilot)

This PR reduces unnecessary NetBox reconcile updates by tracking status.lastUpdated for IpAddress, IpRange, and Prefix, and by skipping update calls when the NetBox last_updated timestamp and the CR Ready condition’s ObservedGeneration indicate everything is already in sync.

Changes:

• Add Status.LastUpdated to IpAddress, IpRange, and Prefix CRDs/types and propagate NetBox LastUpdated into status from controllers.
• Introduce utils.IsUpToDate and use it in NetBox API clients to skip update operations when LastUpdated + Ready condition + generation match.
• Refactor Prefix API v3/v4 request building and add/extend unit + controller tests for the new behavior.

[bruelea]

The review is focused on the ip address controller, since the structure of the controllers are aligned the comments apply to all 3 controllers.

Thanks for adding extensive testing!

[Copilot]

Pull request overview

This PR reduces unnecessary NetBox reconcile updates by tracking status.lastUpdated for IpAddress, IpRange, and Prefix, and by skipping update calls when the NetBox last_updated timestamp and the CR Ready condition’s ObservedGeneration indicate everything is already in sync.

Changes:

• Add Status.LastUpdated to IpAddress, IpRange, and Prefix CRDs/types and propagate NetBox LastUpdated into status from controllers.
• Introduce utils.IsUpToDate and use it in NetBox API clients to skip update operations when LastUpdated + Ready condition + generation match.
• Refactor Prefix API v3/v4 request building and add/extend unit + controller tests for the new behavior.

Reviewed changes

Copilot reviewed 24 out of 24 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
pkg/netbox/utils/helpers.go	Adds IsUpToDate helper used to decide whether to skip updates.
pkg/netbox/api/prefix.go	Updates Prefix reserve/update logic to return (resp, isUpToDate, err) and skip updates when up to date; refactors v3/v4 request building usage.
pkg/netbox/api/prefix_v4.go	Extracts v4 writable request builder + v4 create/update helpers.
pkg/netbox/api/prefix_v4_test.go	Adds tests for writablePrefixRequestV4.
pkg/netbox/api/prefix_v3.go	Adjusts v3 prefix client return signature and adds v3 writable request builder.
pkg/netbox/api/prefix_v3_test.go	Adds tests for v3 writable prefix request builder and updated signature.
pkg/netbox/api/prefix_test.go	Extends Prefix composite-client tests for up-to-date skipping behavior and LastUpdated.
pkg/netbox/api/ip_range.go	Updates IP range reserve/update logic to return (resp, isUpToDate, err) and skip updates when up to date.
pkg/netbox/api/ip_range_test.go	Extends IP range tests for up-to-date skipping and LastUpdated.
pkg/netbox/api/ip_address.go	Updates IP address reserve/update logic to return (resp, isUpToDate, err) and skip updates when up to date; uses NetBox LastUpdated.
pkg/netbox/api/ip_address_test.go	Extends IP address tests for up-to-date skipping and LastUpdated.
internal/controller/prefix_controller.go	Skips status updates when NetBox object is already up to date; persists status.lastUpdated.
internal/controller/iprange_controller.go	Skips status updates when up to date; persists status.lastUpdated.
internal/controller/ipaddress_controller.go	Skips status updates when up to date; persists status.lastUpdated.
internal/controller/ipaddress_controller_test.go	Adds a controller test case for “skip update when already up to date”.
internal/controller/netbox_testdata_test.go	Adds stable NetBox LastUpdated test data and an “up to date” CR helper.
config/crd/bases/netbox.dev_prefixes.yaml	Adds status.lastUpdated field to Prefix CRD schema.
config/crd/bases/netbox.dev_ipranges.yaml	Adds status.lastUpdated field to IpRange CRD schema.
config/crd/bases/netbox.dev_ipaddresses.yaml	Adds status.lastUpdated field to IpAddress CRD schema.
api/v1/prefix_types.go	Adds LastUpdated *metav1.Time to PrefixStatus.
api/v1/iprange_types.go	Adds LastUpdated *metav1.Time to IpRangeStatus.
api/v1/ipaddress_types.go	Adds LastUpdated *metav1.Time to IpAddressStatus.
api/v1/zz_generated.deepcopy.go	Updates deep-copy logic for new LastUpdated fields.
Makefile	Uses $(GOBIN)/ginkgo for integration tests.

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