fix(cf-api): New Worker Rollover endpoint

[dmikhaylovnv]

Changes:

• Replaced the rollover endpoint with:
  PUT /v2/nvcf/accounts/{ncaId}/rolloverWorkers/deployments/{deploymentId}/gpu-specifications/{gpuSpecificationId}
• Simplified RolloverSpecificationDto to contain only numInstances.
• Removed the obsolete RolloverRequest wrapper.
• Validates deployment ownership, GPU specification membership, and maximum instance count.
• Rolls over only the selected GPU specification.
• Updated integration tests for authorization, payload validation, unknown GPU specs, and successful rollover.

Closes #1164

Summary by CodeRabbit

• New Features

  • Rollover workers for a specific deployment and GPU specification.
  • Request a defined number of new instances, with validation for valid and supported counts.
  • Receive a single request ID for each rollover operation.

• Bug Fixes

  • Improved validation and authorization handling for rollover requests.
  • Clearer errors for unknown deployments or GPU specifications.

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📒 Files selected for processing (1)

• src/control-plane-services/cloud-functions/nvcf-core/src/main/java/com/nvidia/nvcf/rest/misc/dto/RolloverWorkersResponse.java

🚧 Files skipped from review as they are similar to previous changes (1)

• src/control-plane-services/cloud-functions/nvcf-core/src/main/java/com/nvidia/nvcf/rest/misc/dto/RolloverWorkersResponse.java

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📝 Walkthrough

Walkthrough

The worker rollover API now targets a deployment and GPU specification directly. Its request contains only numInstances, and its response contains one ICMS request ID. Controller logic and tests cover single-specification validation and scheduling.

Changes

Deployment GPU specification rollover

Layer / File(s)	Summary
Rollover request and response contracts src/control-plane-services/cloud-functions/nvcf-core/src/main/java/com/nvidia/nvcf/rest/misc/dto/*	RolloverSpecificationDto now contains only a positive numInstances value. RolloverWorkersResponse now returns one ICMS request ID.
Deployment GPU specification rollover flow src/control-plane-services/cloud-functions/nvcf-core/src/main/java/com/nvidia/nvcf/rest/misc/XAccountMiscEndpointsController.java	The endpoint uses deployment and GPU specification identifiers, validates the selected specification and instance count, schedules one instance, and removes legacy multi-specification processing.
Endpoint validation and response tests src/control-plane-services/cloud-functions/nvcf-core/src/test/java/com/nvidia/nvcf/rest/misc/RolloverWorkersTest.java	Tests cover authorization, invalid instance counts, unknown GPU specifications, successful requests, and one returned ICMS request ID.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: ⚪ Minimal · up to 890db

This change is merge-ready after normal checks and review; no actionable merge-blocking risk remains.

Sequence Diagram(s)

sequenceDiagram
  participant Caller
  participant XAccountMiscEndpointsController
  participant DeploymentContext
  participant ICMSAllocator
  Caller->>XAccountMiscEndpointsController: Submit deploymentId, gpuSpecificationId, and numInstances
  XAccountMiscEndpointsController->>DeploymentContext: Resolve deployment context
  XAccountMiscEndpointsController->>ICMSAllocator: Schedule one instance
  ICMSAllocator-->>XAccountMiscEndpointsController: Return ICMS request ID
  XAccountMiscEndpointsController-->>Caller: Return one ICMS request ID

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Suggested reviewers: sanjay-saxena

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	The PR implements the endpoint and payload simplification in issue [#1164] and updates related validation and tests. However, the route uses /gpu-specifications/ instead of the issue-required `/gpu-…	Use the exact route required by [#1164], or confirm that the issue requirement changed. Add the required Helm chart component version update and verify support for self-hosted and managed environments.
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 7 functions across 4 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title follows Conventional Commits syntax with the required type and scope. The fix type and subject describe the worker rollover endpoint change.
Out of Scope Changes check	✅ Passed	The controller, DTO, response, and test changes directly support the worker rollover endpoint replacement and contain no unrelated changes.

Full details: Linked Issues check

Explanation

The PR implements the endpoint and payload simplification in issue [#1164] and updates related validation and tests. However, the route uses /gpu-specifications/ instead of the issue-required /gpu-specs/, and no Helm chart component version update appears in the changes.

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🛡️ CodeQL Analysis

🚨 Found 11 issue(s)

Severity Breakdown:

• 🔴 Errors: 0
• 🟡 Warnings: 0
• 🔵 Notes: 0

📋 Top Issues

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_{🕐 Last updated: 2026-09-01 19:45:10 UTC | Commit: a3c9d55}

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Actionable comments posted: 2

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Inline comments:
In
`@src/control-plane-services/cloud-functions/nvcf-core/src/main/java/com/nvidia/nvcf/rest/misc/dto/RolloverWorkersResponse.java`:
- Around line 26-28: Update the `@Schema` descriptions on RolloverWorkersResponse
and its icmsRequestId component to use singular wording, reflecting that the
response contains one ICMS request ID.
- Line 29: Replace the `@NotEmpty` annotation on
RolloverWorkersResponse.icmsRequestId with `@NotNull`, since the field is a UUID
and should only be validated for non-null values.

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📥 Commits

Reviewing files that changed from the base of the PR and between df7b0d4 and a3c9d55.

📒 Files selected for processing (5)

• src/control-plane-services/cloud-functions/nvcf-core/src/main/java/com/nvidia/nvcf/rest/misc/XAccountMiscEndpointsController.java
• src/control-plane-services/cloud-functions/nvcf-core/src/main/java/com/nvidia/nvcf/rest/misc/dto/RolloverRequest.java
• src/control-plane-services/cloud-functions/nvcf-core/src/main/java/com/nvidia/nvcf/rest/misc/dto/RolloverSpecificationDto.java
• src/control-plane-services/cloud-functions/nvcf-core/src/main/java/com/nvidia/nvcf/rest/misc/dto/RolloverWorkersResponse.java
• src/control-plane-services/cloud-functions/nvcf-core/src/test/java/com/nvidia/nvcf/rest/misc/RolloverWorkersTest.java

💤 Files with no reviewable changes (1)

• src/control-plane-services/cloud-functions/nvcf-core/src/main/java/com/nvidia/nvcf/rest/misc/dto/RolloverRequest.java

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