privilegedescalation/headlamp-sealed-secrets-plugin
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feat: implement Result types for type-safe error handling (Phase 1.1)

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Replace throw/catch patterns with explicit Result types throughout the
codebase. This provides type-safe error handling and better user-facing
error messages.

## Changes

### Core Type System (src/types.ts)
- Add Result<T, E> discriminated union type
- Add AsyncResult<T, E> for promises
- Add helper functions: Ok(), Err(), tryCatch(), tryCatchAsync()

### Crypto Module (src/lib/crypto.ts)
- Update parsePublicKeyFromCert() to return Result<PublicKey, string>
- Update encryptValue() to return Result<string, string>
- Update encryptKeyValues() to return Result<Record<string, string>, string>
- Early return on first encryption failure with detailed error

### Controller API (src/lib/controller.ts)
- Update fetchPublicCertificate() to return AsyncResult<string, string>
- Update verifySealedSecret() to return AsyncResult<boolean, string>
- Update rotateSealedSecret() to return AsyncResult<string, string>
- Use tryCatchAsync() for HTTP operations

### UI Components
- EncryptDialog: Explicit error checking at each step with specific messages
- SealingKeysView: Type-safe certificate download with error handling
- DecryptDialog: Import cleanup (auto-fixed by linter)
- SealedSecretDetail: Unused import removed (auto-fixed by linter)

### Documentation
- ENHANCEMENT_PLAN.md: Comprehensive 4-phase enhancement roadmap
- PHASE_1.1_COMPLETE.md: Detailed implementation summary
- BUILD_VERIFICATION_SUMMARY.md: Build metrics and verification results
- DEVELOPMENT.md: Development workflow guide
- TESTING_GUIDE.md: Manual testing procedures
- READY_FOR_TESTING.md: Quick-start testing guide

### Development Tools
- Add 5 specialized Claude Code subagents to .claude/agents/
  - typescript-pro: TypeScript expertise
  - kubernetes-specialist: K8s best practices
  - react-specialist: React optimization
  - security-auditor: Security review
  - code-reviewer: Code quality

## Benefits

- Type Safety: Errors are now part of type signatures
- Better UX: Specific error messages at each operation step
- Maintainability: Error paths are explicit and visible
- No Hidden Exceptions: All error cases handled explicitly

## Verification

- TypeScript: 0 errors
- Linting: All checks pass
- Build: 340.13 kB (93.40 kB gzipped, +0.2%)
- Package: Successfully created

## Breaking Changes

None for users. Internal API signatures changed but plugin behavior is
backward compatible.

## Testing

See TESTING_GUIDE.md for detailed test scenarios:
- Happy path: Create sealed secret with valid controller
- Error path: Try with controller unreachable
- Console check: Verify no uncaught exceptions

Run: npm start (in headlamp-sealed-secrets directory)

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>
This commit is contained in:
Chris Farhood
2026-02-11 21:09:10 -05:00
parent b0d86831b7
commit 286e88fece
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TESTING_GUIDE.md
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# Testing Guide - Phase 1.1 Result Types
This guide helps you test the Result types implementation to verify error handling works correctly.
---
## 🚀 Starting the Development Server
```bash
cd headlamp-sealed-secrets
npm start
```
This will:
- Build the plugin in development mode
- Start Headlamp with the plugin loaded
- Open http://localhost:4466 in your browser
- Enable hot-reload for code changes
**Expected Output:**
```
> headlamp-sealed-secrets@0.1.0 start
> headlamp-plugin start
Starting development server...
Plugin loaded: headlamp-sealed-secrets
Server running at http://localhost:4466
```
---
## 🧪 Test Scenarios
### Test 1: Normal Operation (Happy Path)
**Prerequisites:**
- Sealed Secrets controller running in cluster
- Valid kubeconfig configured
**Steps:**
1. Navigate to "Sealed Secrets" in sidebar
2. Click "Create Sealed Secret"
3. Fill in form:
- Name: `test-secret`
- Namespace: `default`
- Scope: `strict`
- Key: `password`
- Value: `mysecretvalue`
4. Click "Create"
**Expected Result:**
- ✅ Success message: "SealedSecret created successfully"
- ✅ Secret appears in list
- ✅ No console errors
**What This Tests:**
- Certificate fetch works
- Certificate parsing works
- Encryption works
- Kubernetes API call works
---
### Test 2: Controller Unreachable
**Setup:**
- Ensure controller is NOT running, or
- Modify Settings to point to invalid controller
**Steps:**
1. Go to Settings (if available)
2. Set controller namespace to `nonexistent`
3. Try to create a sealed secret
**Expected Result:**
- ❌ Error message: "Failed to fetch certificate: [HTTP error details]"
- ✅ User-friendly error, not stack trace
- ✅ No uncaught exception in console
**What This Tests:**
- `fetchPublicCertificate` error handling
- AsyncResult error path
- User-facing error messages
---
### Test 3: Invalid Certificate
**Setup:**
- Requires modifying controller to return invalid cert (advanced)
- OR test with mock by temporarily modifying `fetchPublicCertificate`
**Mock Test (temporary code change):**
```typescript
// In src/lib/controller.ts (TEMPORARY)
export async function fetchPublicCertificate(
config: PluginConfig
): AsyncResult<string, string> {
// Return invalid cert for testing
return Ok('INVALID CERTIFICATE DATA');
}
```
**Steps:**
1. Make the temporary code change above
2. Build: `npm run build`
3. Try to create a sealed secret
**Expected Result:**
- ❌ Error message: "Invalid certificate: [parse error details]"
- ✅ Specific error about certificate parsing
- ✅ No uncaught exception
**Cleanup:**
- Revert the temporary change
- Run `npm run build` again
**What This Tests:**
- `parsePublicKeyFromCert` error handling
- Result type error propagation
- Error message clarity
---
### Test 4: Encryption Failure
**Setup:**
- This is harder to trigger naturally
- Would require corrupting the crypto operation
**Skip for Now:**
- Covered by unit tests in future phases
- Error path is already type-safe
---
### Test 5: Certificate Download
**Steps:**
1. Navigate to "Sealing Keys" view
2. Click "Download Certificate" button
**Expected Results - Success:**
- ✅ File downloads: `sealed-secrets-cert.pem`
- ✅ Success message: "Certificate downloaded"
- ✅ File contains valid PEM certificate
**Expected Results - Failure (if controller down):**
- ❌ Error message: "Failed to download certificate: [error details]"
- ✅ No file downloaded
- ✅ Clear error message
**What This Tests:**
- Certificate fetch in different context
- File download error handling
- Result type in SealingKeysView
---
### Test 6: Browser Console Check
**Steps:**
1. Open Browser DevTools (F12)
2. Go to Console tab
3. Perform operations (create secret, download cert)
**Expected Results:**
- ✅ No uncaught exceptions
- ✅ No "Unhandled promise rejection" errors
- ℹ️ May see debug logs (acceptable)
- ⚠️ Any warnings should be from Headlamp framework, not our code
**What This Tests:**
- No exceptions escape Result type handling
- All async errors properly caught
- Promise rejection handling
---
## 📝 Manual Testing Checklist
### Before Testing
- [ ] Controller running in cluster (optional for error testing)
- [ ] kubectl configured
- [ ] Development server can start
- [ ] Browser DevTools open
### Happy Path
- [ ] Plugin loads without errors
- [ ] Sealed Secrets list view displays
- [ ] Create dialog opens
- [ ] Can create sealed secret successfully
- [ ] Success message appears
- [ ] Secret appears in list
- [ ] Certificate download works
### Error Paths
- [ ] Controller unreachable shows proper error
- [ ] Invalid certificate shows proper error
- [ ] Network errors handled gracefully
- [ ] No uncaught exceptions in console
- [ ] Error messages are user-friendly
### Code Quality
- [ ] No TypeScript errors in build
- [ ] No linting errors
- [ ] Bundle size acceptable
- [ ] Hot reload works during development
---
## 🐛 Known Issues to Look For
### Issue: Type Narrowing
**Symptom:** TypeScript errors about accessing `.error` or `.value`
**Cause:** Using `!result.ok` instead of `result.ok === false`
**Fix:** Use explicit comparison `result.ok === false`
### Issue: Promise Rejection
**Symptom:** "Unhandled promise rejection" in console
**Cause:** Async function not returning Result type
**Fix:** Ensure all async functions use `AsyncResult<T, E>`
### Issue: Generic Error Messages
**Symptom:** User sees "Error: [object Object]"
**Cause:** Not extracting error message from Result
**Fix:** Use `result.error` (if string) or `result.error.message` (if Error)
---
## 📊 What to Record
### For Each Test:
```markdown
**Test:** [Test name]
**Date:** [Date/time]
**Environment:** [Browser, OS]
**Status:** ✅ Pass / ❌ Fail
**Steps:**
1. [Step 1]
2. [Step 2]
**Actual Result:**
[What happened]
**Expected Result:**
[What should happen]
**Screenshots:**
[If applicable]
**Console Output:**
[Any relevant console messages]
```
### Example:
```markdown
**Test:** Create Sealed Secret - Happy Path
**Date:** 2026-02-11 21:00
**Environment:** Chrome 120, macOS
**Status:** ✅ Pass
**Steps:**
1. Opened Sealed Secrets page
2. Clicked "Create Sealed Secret"
3. Filled form with test data
4. Clicked "Create"
**Actual Result:**
- Green success message appeared: "SealedSecret created successfully"
- Secret "test-secret" appeared in list
- No console errors
**Expected Result:**
- Success message ✅
- Secret in list ✅
- No errors ✅
**Console Output:**
(No errors)
```
---
## 🔍 Debugging Tips
### Enable Verbose Logging
Add temporary console.logs to track Result flow:
```typescript
const certResult = await fetchPublicCertificate(config);
console.log('Certificate fetch result:', certResult);
if (certResult.ok === false) {
console.error('Certificate fetch failed:', certResult.error);
// ...
}
```
### Check Network Tab
1. Open DevTools → Network tab
2. Try creating a secret
3. Look for request to `/v1/cert.pem`
4. Check status code and response
### Inspect State
Use React DevTools to inspect component state:
1. Install React DevTools extension
2. Select `<EncryptDialog>` component
3. Check `encrypting` state
4. Verify no infinite loops
---
## ✅ Success Criteria
### Must Pass
- [ ] Plugin loads without errors
- [ ] Can create sealed secret with valid controller
- [ ] Error messages are clear and specific
- [ ] No uncaught exceptions in console
- [ ] No unhandled promise rejections
### Should Pass
- [ ] Certificate download works
- [ ] Sealing keys view displays
- [ ] Settings page loads (if exists)
- [ ] Hot reload works during development
### Nice to Have
- [ ] Error messages suggest solutions
- [ ] Loading states show during operations
- [ ] Success feedback is immediate
- [ ] UI remains responsive during errors
---
## 📋 Test Report Template
```markdown
# Phase 1.1 Test Report
**Date:** [Date]
**Tester:** [Name]
**Environment:** [Browser, OS, kubectl version]
## Test Results Summary
- Total Tests: 6
- Passed: X
- Failed: Y
- Skipped: Z
## Detailed Results
### Test 1: Normal Operation
Status: ✅ / ❌
Notes: [Details]
### Test 2: Controller Unreachable
Status: ✅ / ❌
Notes: [Details]
[Continue for all tests...]
## Issues Found
1. [Issue description]
- Severity: Critical / High / Medium / Low
- Steps to reproduce: [Steps]
- Expected: [Expected behavior]
- Actual: [Actual behavior]
## Recommendations
- [Recommendation 1]
- [Recommendation 2]
## Sign-off
- [ ] All critical tests pass
- [ ] No regressions found
- [ ] Ready for next phase
**Tester Signature:** [Name]
**Date:** [Date]
```
---
## 🎯 Next Steps After Testing
### If All Tests Pass
1. Document test results
2. Commit Phase 1.1 changes
3. Move to Phase 1.2 (Branded Types)
### If Tests Fail
1. Document failing scenarios
2. Debug and fix issues
3. Re-run failed tests
4. Verify fixes don't break passing tests
### If Blockers Found
1. Assess severity
2. Create GitHub issues if needed
3. Decide whether to continue or fix first
---
**Happy Testing!** 🧪
Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)
Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>