Enhance internal token authentication mode by introducing a skipValidation option

[Thushani-Jayasekera]

$subject

[coderabbitai]

📝 Walkthrough

Walkthrough

The change adds auth.internalToken.skipValidation support for internal_token mode. Helm omits the JWT public key requirement and mount when enabled. Platform API validation, documentation, tests, and startup logging reflect the remaining claim and authorization checks.

Changes

Internal token validation bypass

Layer / File(s)	Summary
Runtime configuration and validation platform-api/config/config-template.toml, platform-api/config/config.go, platform-api/config/config_test.go, platform-api/internal/server/server.go, platform-api/internal/middleware/auth.go	Configuration comments describe the remaining JWT parsing, organization-claim, and authorization checks. Tests cover key requirements for internal-token and file modes. Startup logging uses an Info message when validation is skipped.
Helm configuration and key mounting kubernetes/helm/platform-api-helm-chart/templates/configmap.yaml, kubernetes/helm/platform-api-helm-chart/templates/deployment.yaml, kubernetes/helm/platform-api-helm-chart/values.yaml	The chart adds auth.internalToken.skipValidation. When enabled for internal_token, the ConfigMap emits skip_validation, while the chart omits the public-key requirement and jwt-keys mount. Comments document the updated secret and key behavior.

Priority: ⬇️ Low

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

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant HelmValues
  participant HelmTemplates
  participant PlatformAPI
  HelmValues->>HelmTemplates: Set auth.internalToken.skipValidation
  HelmTemplates->>PlatformAPI: Render skip_validation without JWT key mount
  PlatformAPI->>PlatformAPI: Parse claims and apply authorization

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Merge Risk: 🟡 Moderate · up to c536d

An exposed deployment could accept forged organization, scope, or role claims. Enforce the trusted-upstream boundary before merging.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description contains only "$subject" and does not provide the required purpose, goals, approach, user stories, documentation, testing, security checks, samples, related PRs, or test environment de…	Replace "$subject" with a complete description that follows the repository template. Include the purpose, goals, implementation approach, user stories, documentation impact, unit and integration test details, security-check results, sample …

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main change: adding a skipValidation option to internal token authentication.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 4 files. (4 skipped: 4 …
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Description check

Explanation

The description contains only "$subject" and does not provide the required purpose, goals, approach, user stories, documentation, testing, security checks, samples, related PRs, or test environment details.

Resolution

Replace "$subject" with a complete description that follows the repository template. Include the purpose, goals, implementation approach, user stories, documentation impact, unit and integration test details, security-check results, sample information, related PRs, and test environment.

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Actionable comments posted: 1

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Inline comments:
In `@kubernetes/helm/platform-api-helm-chart/templates/deployment.yaml`:
- Around line 14-15: Update the Helm template logic around $skipJwtValidation
and $jwtKeysMounted to reject rendering when skipValidation is enabled for
NodePort or LoadBalancer Services without a configured trusted upstream that
authenticates or replaces Authorization. Keep skipValidation supported for
internal-only Services and preserve normal JWT key mounting behavior in all
other cases.

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📥 Commits

Reviewing files that changed from the base of the PR and between 45388b9 and c536d1b.

📒 Files selected for processing (8)

• kubernetes/helm/platform-api-helm-chart/templates/configmap.yaml
• kubernetes/helm/platform-api-helm-chart/templates/deployment.yaml
• kubernetes/helm/platform-api-helm-chart/values.yaml
• platform-api/config/config-template.toml
• platform-api/config/config.go
• platform-api/config/config_test.go
• platform-api/internal/middleware/auth.go
• platform-api/internal/server/server.go

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