OCPBUGS-78293: Defer 404 catch-all until plugin feature flags settle - #17099
OCPBUGS-78293: Defer 404 catch-all until plugin feature flags settle#17099TheRealJon wants to merge 4 commits into
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The catch-all 404 route activates as soon as all plugins finish loading (allPluginsProcessed). However, plugin feature flag hookProviders need additional time to resolve their flags asynchronously. During this window, flag-gated routes are absent from the router because useExtensions filters out extensions whose required flags are still undefined, causing a momentary 404 flash. This change adds a check for pending plugin feature flags before showing the 404 page. It inspects each loaded plugin's manifest.extensions for required flags that are still undefined in the Redux FLAGS store. A 3-second timeout fallback ensures broken hookProviders don't permanently block the 404 page. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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@TheRealJon: This pull request references Jira Issue OCPBUGS-78293, which is invalid:
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ChangesPlugin flag routing
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to The change defers the 404 fallback while plugin flags settle and adds a timeout safeguard; no actionable merge-blocking risk remains beyond normal checks and review. Suggested reviewers: 🚥 Pre-merge checks | ✅ 14 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (14 passed)
Full details: Description checkExplanation The description explains the root cause and solution, but it omits most required template sections, including test setup, test cases, browser conformance, screenshots or recording status, additional information, and reviewers or assignees. Resolution Complete the required template sections. Add test setup, test cases, browser conformance results, screenshots or state that they are not applicable, additional information, and reviewers or assignees. Use explicit Analysis / Root cause and Solution description headings if required by repository practice. Full details: Docstring CoverageExplanation No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 2 files. Full details: Stable And Deterministic Test NamesExplanation The PR changes only two TypeScript source files. The added hook and the updated Full details: Test Structure And QualityExplanation PASS: The pull request changes only two TypeScript production files. The PR diff contains no Ginkgo tests, Go test files, or test-related paths, so the specified Ginkgo test-quality requirements are not applicable. Full details: Single Node Openshift (Sno) Test CompatibilityExplanation PASS: The pull request changes only two frontend TypeScript files. The diff adds no Ginkgo e2e tests and contains no It(), Describe(), Context(), or When() declarations. Therefore, the SNO multi-node compatibility check is not applicable. Full details: Topology-Aware Scheduling CompatibilityExplanation PASS: The PR changes only two frontend TypeScript files: Full details: Ote Binary Stdout ContractExplanation PASS. The pull request changes only two frontend TypeScript files: Full details: Ipv6 And Disconnected Network Test CompatibilityExplanation PASS: The pull request changes only two TypeScript frontend files. The diff adds no Ginkgo e2e tests, Go test files, network addresses, URLs, or external connectivity operations. The IPv6 and disconnected-network test check is therefore not applicable. Full details: No-Weak-CryptoExplanation No weak-crypto issue was introduced. The pull request changes only plugin-flag state inspection, timeout handling, and 404 route gating. The exact added lines contain no MD5, SHA1, DES, RC4, 3DES, Blowfish, ECB, crypto API, custom cryptography, or secret/token comparison. The new Full details: Container-PrivilegesExplanation PASS: The pull request changes only two TypeScript source files: Full details: No-Sensitive-Data-In-LogsExplanation PASS: The pull request changes only route gating and feature-flag state handling. The complete diff adds no logging or telemetry calls, and structural searches found no console, logger, or print sinks in the changed code. The changed data consists of plugin metadata and Redux flag state, but the code does not emit it.
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Inline comments:
In `@frontend/public/components/app-contents.tsx`:
- Around line 182-190: The flagSettlingTimedOut state must reset when no plugin
flags are pending so each pending-flag cycle gets its own 3-second settling
window. Update the useEffect around allPluginsProcessed, hasPendingPluginFlags,
and flagSettlingTimedOut to clear the timeout state when hasPendingPluginFlags
becomes false, while preserving timer cleanup and the existing showNotFound
behavior; add a component test covering two consecutive pending cycles.
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frontend/public/components/app-contents.tsx
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@TheRealJon: This pull request references Jira Issue OCPBUGS-78293, which is valid. The bug has been moved to the POST state. 3 validation(s) were run on this bug
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Move the plugin flag settling logic from app-contents.tsx into a dedicated usePluginFlagsSettled hook for better separation of concerns and testability. Fix a bug where flagSettlingTimedOut was never reset when hasPendingPluginFlags became false, which could cause the hook to skip the timeout on a subsequent pending-flags cycle (e.g. if a late-loading plugin introduces new pending flags after the initial batch has settled). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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@TheRealJon: This pull request references Jira Issue OCPBUGS-78293, which is valid. 3 validation(s) were run on this bug
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Replace the eslint-disabled setState-in-useEffect with React's idiomatic setState-during-render pattern for resetting flagSettlingTimedOut when hasPendingPluginFlags transitions from true to false. This follows the React docs recommendation for storing information from previous renders and avoids the cascading render concerns of calling setState inside an effect. Simplify the useEffect to a single guard clause since the reset is now handled during render. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
| // This uses React's setState-during-render pattern to avoid the | ||
| // cascading-render issues of calling setState inside useEffect. | ||
| // See https://react.dev/reference/react/useState#storing-information-from-previous-renders |
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Reason for not breaking guardrail should be in commit description not in comments
| // This uses React's setState-during-render pattern to avoid the | |
| // cascading-render issues of calling setState inside useEffect. | |
| // See https://react.dev/reference/react/useState#storing-information-from-previous-renders |
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/label tide/merge-method-squash |
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Move the inline comment explaining the setState-during-render pattern into the commit history where it belongs. The code uses React's setState-during-render pattern (prevHasPending / setPrevHasPending) to reset flagSettlingTimedOut when pending flags resolve, so the timeout can fire again if new flags become pending (e.g. a late-loading plugin). This avoids the cascading-render issues of calling setState inside useEffect. See React docs: useState#storing-information-from-previous-renders. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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/lgtm |
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Scheduling tests matching the |
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The catch-all 404 route activates as soon as all plugins finish loading (allPluginsProcessed). However, plugin feature flag hookProviders need additional time to resolve their flags asynchronously. During this window, flag-gated routes are absent from the router because useExtensions filters out extensions whose required flags are still undefined, causing a momentary 404 flash.
This change adds a check for pending plugin feature flags before showing the 404 page. It inspects each loaded plugin's manifest.extensions for required flags that are still undefined in the Redux FLAGS store. A 3-second timeout fallback ensures broken hookProviders don't permanently block the 404 page.
Summary by CodeRabbit