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Restore Keycloak authentication flow diagrams and themed rendering - #1844
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David Pine (IEvangelist) merged 3 commits intoOct 16, 2026
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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October 8, 2026 13:07
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🟡 Changes recommended
The documented flows require cookie persistence and token-forwarding configuration absent from the accompanying example.
1 open finding
What changed in this PR
Restores themed Keycloak authentication diagrams and fixes development image-cache invalidation.
Changes:
- Adds light/dark diagrams and editable Excalidraw source.
- Embeds diagrams using
ThemeImage. - Adds content-hash URL versioning and regression coverage.
| File | Description |
|---|---|
src/frontend/src/components/ThemeImage.astro |
Versions development image URLs by content hash. |
src/frontend/tests/unit/custom-components.vitest.test.ts |
Tests stable and updated image URLs. |
src/frontend/src/content/docs/integrations/security/keycloak.mdx |
Adds authentication-flow explanations and diagrams. |
src/frontend/src/assets/integrations/security/keycloak/auth-flow-diagram.excalidraw |
Provides editable diagram source. |
src/frontend/src/assets/integrations/security/keycloak/auth-flow-diagram.png |
Adds dark separate-API diagram. |
src/frontend/src/assets/integrations/security/keycloak/auth-flow-diagram-light.png |
Adds light separate-API diagram. |
src/frontend/src/assets/integrations/security/keycloak/simple-auth-flow-diagram.png |
Adds dark combined-backend diagram. |
src/frontend/src/assets/integrations/security/keycloak/simple-auth-flow-diagram-light.png |
Adds light combined-backend diagram. |
🧠 Review effort: Balanced
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| ### Authentication flows | ||
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| When the backend also serves the API, the browser signs in through Keycloak and uses an authentication cookie for subsequent requests to the backend: |
Contributor
Frontend HTML artifact readyThe latest frontend build uploaded the This comment updates automatically when a new frontend build artifact is uploaded. |
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
David Pine (IEvangelist)
enabled auto-merge (squash)
October 16, 2026 12:29
Eric Erhardt (eerhardt)
approved these changes
Oct 16, 2026
David Pine (IEvangelist)
deleted the
ievangelist-restore-keycloak-auth-diagrams
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October 16, 2026 14:33
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Summary
-lightfor the light variants and the existingThemeImagecomponent in the article.Background
The original diagrams lived in
dotnet/docs-aspire/docs/authentication/media/and were omitted when the Keycloak integration article migrated to aspire.dev in #49. Their source and images are recovered from dotnet/docs-aspire commit1f1a76339b3f22c99ea2060f42ba72361d9728f9.The diagram exports were updated together from the recovered source. Embedded browser and Keycloak logos retain their original colors.
Development cache fix
Astro's development image endpoint sends a one-year cache lifetime, while its local source URLs remain unchanged when image contents change. This allowed a cached dark export to show old thick borders next to a newly rendered light export.
ThemeImagenow versions local/@fs/source URLs with a SHA-256 content revision during development. Unchanged images retain stable URLs; editing either image changes its URL. Production image handling remains unchanged.Verification
ThemeImagecomponent tests pass, including stable URLs for unchanged image bytes and changed URLs for updated bytes.