feat(orchestrator): reduce NFS Module Federation sync size by lokanandaprabhu · Pull Request #4024 · redhat-developer/rhdh-plugins

lokanandaprabhu · 2026-07-28T08:57:54Z

Summary

Replace OrchestratorIcon (MUI SvgIcon) with inline SVG in alpha.tsx to remove MUI component infrastructure from the sync bundle
Extract widget rendering into FormDecoratorContent.tsx and dynamically import() it in FormWidgetsApi, moving the ~860 KB RJSF widget graph from sync to async — loaded only when a workflow form is opened
Both OFS and NFS paths benefit from the lazy loading

Bundle Impact

Plugin	Export	Before	After	Delta
orchestrator-form-widgets	`./alpha` (NFS)	1002.6 KB sync	112.7 KB sync	-88.8%
orchestrator-form-widgets	`.` (OFS)	917.1 KB sync	51.6 KB sync	-94.4%
orchestrator	`./alpha` (NFS)	542.1 KB sync	524.0 KB sync	-3.3%

Test plan

All 79 orchestrator-form-widgets tests pass
All 289 orchestrator tests pass
Bundle metrics captured before/after confirming size reductions
Verify plugin loads correctly in RHDH with NFS enabled

🤖 Generated with Claude Code

rhdh-qodo-merge · 2026-07-28T08:58:07Z

Code Review by Qodo

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We weren't able to complete the code review on our side. Please try again manually by commenting /agentic_review on this PR.

rhdh-gh-app · 2026-07-28T08:58:24Z

Changed Packages

Package Name	Package Path	Changeset Bump	Current Version
@red-hat-developer-hub/backstage-plugin-orchestrator-form-widgets	workspaces/orchestrator/plugins/orchestrator-form-widgets	patch	`v1.12.0`
@red-hat-developer-hub/backstage-plugin-orchestrator	workspaces/orchestrator/plugins/orchestrator	patch	`v5.10.0`

rhdh-qodo-merge · 2026-07-28T09:01:00Z

PR Summary by Qodo

Lazy-load form widget graph and inline icon to shrink Module Federation sync bundles

✨ Enhancement 🧪 Tests ⚙️ Configuration changes 🕐 20-40 Minutes

AI Description

• Lazy-load the form decorator/widget graph so heavy RJSF code ships async only when forms open.
• Replace the MUI SvgIcon-based Orchestrator icon with an inline SVG to drop MUI icon plumbing.
• Add/adjust tests and publish patch changesets for orchestrator and form-widgets packages.

Diagram

sequenceDiagram
  participant UI as "Workflow form"
  participant API as "FormWidgetsApi"
  participant Loader as "import()"
  participant Content as "FormDecoratorContent"
  participant Form as "RJSF FormComponent"
  UI->>API: getFormDecorator()
  UI->>API: render Decorated(props)
  API->>Loader: import("./FormDecoratorContent")
  Loader-->>Content: default export
  API-->>UI: set state -> re-render
  UI->>Content: render(FormComponent, context)
  Content->>Form: render(widgets + validators + formContext)

High-Level Assessment

The following are alternative approaches to this PR:

1. React.lazy + Suspense boundary

➕ More idiomatic lazy-loading pattern for components
➕ Can show explicit loading UI instead of returning null
➖ Requires adding/deciding a fallback UI and ensuring Suspense compatibility in the hosting tree
➖ May complicate SSR/test setup depending on environment

2. Split widgets into a separately exported entrypoint/package

➕ Clearer dependency boundary; consumers opt-in explicitly to heavy widgets
➕ Can avoid runtime state/effect glue code
➖ Requires API/consumer changes and documentation updates
➖ Harder migration for existing OFS/NFS consumers expecting current API surface

3. Bundler-level chunking (splitChunks/externals) without code changes

➕ Minimal code churn in runtime path
➕ Keeps synchronous render behavior unchanged
➖ More fragile across Module Federation hosts and build tool variations
➖ Harder to guarantee that sync MF payload shrinks for both OFS and NFS

Recommendation: The PR’s approach (dynamic import cached on the API instance, with a small state/effect bridge) is a pragmatic way to guarantee the heavy RJSF widget graph moves out of the sync Module Federation bundle without changing the public API. If desired, a follow-up could replace the return null interim render with an explicit lightweight fallback (or migrate to React.lazy/Suspense) to make loading behavior clearer.

Files changed (5) +125 / -40

Enhancement (1) +26 / -36

FormWidgetsApi.tsxLazy-load FormDecoratorContent from FormWidgetsApi via dynamic import +26/-36

Lazy-load FormDecoratorContent from FormWidgetsApi via dynamic import
• Replaces eager imports of RJSF widget infrastructure with a cached 'import('./FormDecoratorContent')' promise. Uses component state + effect to render nothing until the async module resolves, then renders the extracted decorator content.
workspaces/orchestrator/plugins/orchestrator-form-widgets/src/FormWidgetsApi.tsx

Refactor (2) +84 / -2

FormDecoratorContent.tsxExtract decorator content (widgets/validation/context) into a lazy-loadable module +67/-0

Extract decorator content (widgets/validation/context) into a lazy-loadable module
• Introduces a new component that encapsulates widget registration, custom validation passthrough, and 'useGetExtraErrors()' wiring. This module is intended to be loaded asynchronously to keep the sync bundle small.
workspaces/orchestrator/plugins/orchestrator-form-widgets/src/FormDecoratorContent.tsx

alpha.tsxInline Orchestrator SVG icon to avoid MUI SvgIcon dependency in alpha export +17/-2

Inline Orchestrator SVG icon to avoid MUI SvgIcon dependency in alpha export
• Removes the 'OrchestratorIcon' (MUI 'SvgIcon') import and replaces the page icon with inline SVG markup. Reduces transitive MUI component infrastructure in the sync Module Federation bundle for the alpha entry.
workspaces/orchestrator/plugins/orchestrator/src/alpha.tsx

Tests (1) +9 / -2

FormWidgetsApi.test.tsxUpdate FormWidgetsApi test to handle async dynamic import/render +9/-2

Update FormWidgetsApi test to handle async dynamic import/render
• Makes the decoration test async, preloads the lazy module, and flushes microtasks via 'act()' to allow the import resolution and rerender. Preserves assertions that widgets/context/validators are passed to the underlying form component.
workspaces/orchestrator/plugins/orchestrator-form-widgets/src/FormWidgetsApi.test.tsx

Other (1) +6 / -0

lazy-load-nfs-sync.mdAdd changeset for sync bundle size reduction patches +6/-0

Add changeset for sync bundle size reduction patches
• Adds a changeset marking patch releases for orchestrator and orchestrator-form-widgets. Documents the intent to reduce NFS Module Federation sync size via lazy-loading.
workspaces/orchestrator/.changeset/lazy-load-nfs-sync.md

rhdh-qodo-merge · 2026-07-28T09:09:22Z

Preparing PR labels...

codecov · 2026-07-28T09:11:30Z

Codecov Report

❌ Patch coverage is 92.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 57.88%. Comparing base (e03b281) to head (9bf2d58).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4024   +/-   ##
=======================================
  Coverage   57.87%   57.88%           
=======================================
  Files        2393     2394    +1     
  Lines       95985    96000   +15     
  Branches    26803    26787   -16     
=======================================
+ Hits        55551    55566   +15     
- Misses      38940    38943    +3     
+ Partials     1494     1491    -3

Flag	Coverage Δ		*Carryforward flag
adoption-insights	`84.54% <ø> (ø)`		Carriedforward from e03b281
ai-integrations	`69.06% <ø> (ø)`		Carriedforward from e03b281
app-defaults	`69.79% <ø> (ø)`		Carriedforward from e03b281
augment	`46.67% <ø> (ø)`		Carriedforward from e03b281
boost	`76.77% <ø> (ø)`		Carriedforward from e03b281
bulk-import	`72.55% <ø> (ø)`		Carriedforward from e03b281
cost-management	`13.55% <ø> (ø)`		Carriedforward from e03b281
dcm	`60.72% <ø> (ø)`		Carriedforward from e03b281
extensions	`56.48% <ø> (ø)`		Carriedforward from e03b281
global-floating-action-button	`71.18% <ø> (ø)`		Carriedforward from e03b281
global-header	`62.17% <ø> (ø)`		Carriedforward from e03b281
homepage	`47.46% <ø> (ø)`		Carriedforward from e03b281
install-dynamic-plugins	`56.77% <ø> (ø)`		Carriedforward from e03b281
intelligent-assistant	`74.24% <ø> (ø)`		Carriedforward from e03b281
konflux	`91.98% <ø> (ø)`		Carriedforward from e03b281
lightspeed	`69.02% <ø> (ø)`		Carriedforward from e03b281
mcp-integrations	`83.40% <ø> (ø)`		Carriedforward from e03b281
orchestrator	`66.86% <92.00%> (+0.06%)`	⬆️
quickstart	`65.04% <ø> (ø)`		Carriedforward from e03b281
sandbox	`79.56% <ø> (ø)`		Carriedforward from e03b281
scorecard	`84.94% <ø> (ø)`		Carriedforward from e03b281
theme	`87.90% <ø> (ø)`		Carriedforward from e03b281
translations	`5.12% <ø> (ø)`		Carriedforward from e03b281
x2a	`79.31% <ø> (ø)`		Carriedforward from e03b281

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lokanandaprabhu · 2026-07-28T10:05:25Z

/cc @debsmita1

lokanandaprabhu · 2026-07-28T11:43:55Z

Tested on app-next NFS shell (rhdh#5115)

Orchestrator page loads correctly with inline SVG icon in sidebar
Workflow form renders with all RJSF widgets (lazy-loaded via dynamic import)
Workflow execution completes successfully

Bundle impact (orchestrator-form-widgets ./alpha expose):

Metric	Baseline	Current	Delta
Sync chunks	5 (1006.8 KB)	3 (112.7 KB)	-2 chunks (-894.1 KB / -88.8%)
NFS vs OFS	+1 chunks (+85.5 KB)	-1 chunks (-808.6 KB)	NFS now smaller than OFS

Lazy-load heavy dependencies to reduce sync bundle size: - Replace OrchestratorIcon (MUI SvgIcon) with inline SVG in alpha.tsx - Extract widget rendering into FormDecoratorContent and dynamically import it in FormWidgetsApi, moving the ~860 KB RJSF widget graph from sync to async Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Remove unnecessary `import React from 'react'` in FormDecoratorContent and FormWidgetsApi, use named imports instead - Move inline SVG from alpha.tsx back to OrchestratorIcon component, replacing MUI SvgIcon with plain <svg> element - Update API reports Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

sonarqubecloud · 2026-07-29T06:01:48Z

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

lokanandaprabhu · 2026-07-29T06:32:59Z

@debsmita1 Updated the PR based on feedback, PTAL.

lokanandaprabhu requested review from a team, christoph-jerolimov, karthikjeeyar and lholmquist as code owners July 28, 2026 08:57

github-actions Bot added the workspace/orchestrator label Jul 28, 2026

openshift-ci Bot requested a review from debsmita1 July 28, 2026 10:05

debsmita1 requested changes Jul 28, 2026

View reviewed changes

Comment thread workspaces/orchestrator/plugins/orchestrator-form-widgets/src/FormDecoratorContent.tsx Outdated

Comment thread workspaces/orchestrator/plugins/orchestrator-form-widgets/src/FormWidgetsApi.tsx Outdated

Comment thread workspaces/orchestrator/plugins/orchestrator/src/alpha.tsx Outdated

lokanandaprabhu and others added 3 commits July 29, 2026 11:20

chore: update API reports

ba3b956

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lokanandaprabhu force-pushed the orchestrator/reduce-nfs-sync-size branch from e3e5bfd to 9bf2d58 Compare July 29, 2026 06:00

lokanandaprabhu requested a review from debsmita1 July 29, 2026 06:32

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feat(orchestrator): reduce NFS Module Federation sync size - #4024

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