implement lease transfer

[bennyz]

this simply allows to update the lease with a different client

a corresponding jumpstarter cli update to
jmp update lease will be made

Summary by CodeRabbit

• New Features
  • Lease client transfer capability added, allowing reassignment of active leases to different clients.
  • Enhanced validation ensures active status, target client availability, and namespace consistency.
  • Clear error messaging for transfer failures (lease not active, clients in different namespaces, target client not found).

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

Walkthrough

This change introduces a lease transfer feature that enables updating a lease's client reference. The UpdateLease operation now accepts an optional target client identifier, validates the current lease is active and not ended, enforces namespace consistency, retrieves the target client, and updates the lease's client reference. A new utility function facilitates parsing client identifiers.

Changes

Cohort / File(s)	Summary
Lease Transfer Logic internal/service/client/v1/client_service.go	Adds lease transfer flow within UpdateLease: validates active, non-ended lease; parses target client identifier; enforces same-namespace constraint; retrieves and validates target client; updates ClientRef.Name; provides explicit error messages for transfer failures.
Identifier Parsing internal/service/utils/identifier.go	Adds new exported function ParseClientIdentifier() that wraps ParseObjectIdentifier() for client-specific parsing.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

• The lease transfer logic introduces multiple validation steps and error handling paths that require careful review to ensure correctness
• Verify that the namespace enforcement and client retrieval logic are properly integrated with the existing UpdateLease flow
• Confirm error handling and messages align with intended behavior for different failure scenarios

Poem

🐰 A lease can now hop to a new client's care,
With checks to ensure all is proper and fair.
Namespaces match, and the lease must be strong,
Then ClientRef shifts where it should belong! ✨

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	You can run @coderabbitai generate docstrings to improve docstring coverage.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: implementing lease transfer functionality to allow updating a lease to use a different client.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch lease-transfer

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[mangelajo]

This is very cool, I believe that in the longer term we may want to create a new lease, and transfer the exporter to the new lease, end the current one.

The reason for that will be that we may want to do accounting/billing.

Also something very interesting that we can think about in the future is lease-sharing, but that is more complicated.

[coderabbitai]

Actionable comments posted: 0

🧹 Nitpick comments (1)

internal/service/client/v1/client_service.go (1)

247-268: Lease transfer flow is well‑guarded; consider a small optimization for no‑op transfers

This block correctly:

• Ensures only the current client (checked earlier) can request the transfer.
• Restricts transfers to active, non‑ended leases.
• Enforces same‑namespace transfers and validates the target client exists before updating ClientRef.Name.

One optional refinement: if *req.Lease.Client encodes the same client as jlease.Spec.ClientRef.Name, you could short‑circuit before parsing/GET to avoid an unnecessary API call, e.g. by comparing against the current client identifier the CLI already uses.

📜 Review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between a049e90 and f50a2c3.

📒 Files selected for processing (2)

• internal/service/client/v1/client_service.go (1 hunks)
• internal/service/utils/identifier.go (1 hunks)

🧰 Additional context used

🧬 Code graph analysis (1)

internal/service/client/v1/client_service.go (3)

api/v1alpha1/lease_types.go (1)

• Lease (80-86)

api/v1alpha1/client_types.go (1)

• Client (43-49)

internal/service/utils/identifier.go (1)

• ParseClientIdentifier (93-95)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (4)

• GitHub Check: e2e-test-operator
• GitHub Check: e2e-tests (ubuntu-24.04)
• GitHub Check: e2e-tests-release-0-7
• GitHub Check: e2e-tests (ubuntu-24.04-arm)

🔇 Additional comments (1)

internal/service/utils/identifier.go (1)

93-95: ParseClientIdentifier helper is consistent with existing identifier utilities

The wrapper cleanly reuses ParseObjectIdentifier with the "clients" kind and matches the existing exporter/lease helpers. No issues from a correctness or style standpoint.