feat: add OpenRouter multi-provider failover support #7365

shariqriazz · 2025-08-24T00:43:03Z

Add support for up to 4 OpenRouter providers with automatic failover
Implement priority-based provider selection in UI with dynamic dropdowns
Add comprehensive test coverage for multi-provider functionality
Enable seamless switching between single and multi-provider modes
Ensure primary provider's context window and pricing is used for model info

Important

Adds multi-provider failover support for OpenRouter with UI updates and comprehensive test coverage, ensuring backward compatibility.

Behavior:
- Adds support for up to 4 OpenRouter providers with automatic failover in openrouter.ts.
- Implements priority-based provider selection in ApiOptions.tsx with dynamic dropdowns.
- Ensures primary provider's context window and pricing is used for model info in useSelectedModel.ts.
Tests:
- Adds comprehensive test coverage for multi-provider functionality in openrouter-multi-provider.spec.ts and useSelectedModel-multiProvider.spec.ts.
UI:
- Updates ApiOptions.tsx and OpenRouter.tsx to enable seamless switching between single and multi-provider modes.
- Adds UI elements for multi-provider selection and failover enablement.
Misc:
- Keeps openRouterSpecificProvider for backward compatibility in provider-settings.ts.

^{This description was created by}^{for f586d7e. You can customize this summary. It will automatically update as commits are pushed.}

- Add support for up to 4 OpenRouter providers with automatic failover - Implement priority-based provider selection in UI with dynamic dropdowns - Add comprehensive test coverage for multi-provider functionality - Enable seamless switching between single and multi-provider modes - Ensure primary provider's context window and pricing is used for model info

ellipsis-dev · 2025-08-24T00:44:37Z

webview-ui/src/components/settings/providers/OpenRouter.tsx

+						<Checkbox
+							checked={apiConfiguration?.openRouterFailoverEnabled ?? true}
+							onChange={handleInputChange("openRouterFailoverEnabled", noTransform)}>
+							Enable automatic failover


Please use the translation function (e.g., t('settings:providers.openRouter.multiProvider.failoverEnabled')) for the checkbox label instead of the hardcoded string "Enable automatic failover".

Suggested change

Enable automatic failover

{t('settings:providers.openRouter.multiProvider.failoverEnabled')}

^{This comment was generated because it violated a code review rule: irule_C0ez7Rji6ANcGkkX.}

ellipsis-dev · 2025-08-24T00:44:37Z

webview-ui/src/components/settings/ApiOptions.tsx

+									{apiConfiguration?.openRouterFailoverEnabled ? (
+										<div key="multi-provider-mode">
+											<label className="block font-medium mb-2">
+												Multiple Providers (up to 4)


The multi-provider mode title is hardcoded as 'Multiple Providers (up to 4)'. Use a translatable string (e.g., t('settings:providers.openRouter.multiProvider.title')).

Suggested change

Multiple Providers (up to 4)

{t('settings:providers.openRouter.multiProvider.title')}

^{This comment was generated because it violated a code review rule: irule_C0ez7Rji6ANcGkkX.}

ellipsis-dev · 2025-08-24T00:44:37Z

webview-ui/src/components/settings/ApiOptions.tsx

+														key={`provider-${index}-${apiConfiguration?.openRouterFailoverEnabled}`}
+														className="mb-2">
+														<label className="block text-sm font-medium mb-1">
+															{index === 0


Provider role labels ('Primary Provider', 'Secondary Provider', etc.) are hardcoded. These should be replaced with translation keys (e.g., t('settings:providers.openRouter.multiProvider.primaryProvider')) for consistency.

^{This comment was generated because it violated a code review rule: irule_C0ez7Rji6ANcGkkX.}

roomote

Thank you for your contribution! I've reviewed the OpenRouter multi-provider failover implementation and found several issues that need attention before merging.

roomote · 2025-08-24T00:47:50Z

webview-ui/src/components/settings/ApiOptions.tsx

+									{apiConfiguration?.openRouterFailoverEnabled ? (
+										<div key="multi-provider-mode">
+											<label className="block font-medium mb-2">
+												Multiple Providers (up to 4)


Missing i18n translations here. These hardcoded English strings break internationalization:

"Multiple Providers (up to 4)"

"Primary Provider", "Secondary Provider", etc.

"Configure multiple providers in priority order..."

Consider using translation keys like:

Suggested change

Multiple Providers (up to 4)

<label className="block font-medium mb-2">

{t("settings:providers.openRouter.multiProvider.title")}

</label>

roomote · 2025-08-24T00:47:50Z

webview-ui/src/components/settings/providers/OpenRouter.tsx

+						<Checkbox
+							checked={apiConfiguration?.openRouterFailoverEnabled ?? true}
+							onChange={handleInputChange("openRouterFailoverEnabled", noTransform)}>
+							Enable automatic failover


These hardcoded strings should use i18n translation keys:

Suggested change

Enable automatic failover

{t("settings:providers.openRouter.multiProvider.failoverEnabled")}

and

Suggested change

Enable automatic failover

<div className="text-sm text-vscode-descriptionForeground mt-1">

{t("settings:providers.openRouter.multiProvider.failoverDescription")}

</div>

roomote · 2025-08-24T00:47:50Z

src/api/providers/openrouter.ts

+		}
+
+		// This should never be reached, but just in case
+		throw lastError || new Error("All OpenRouter providers failed")


This error message doesn't provide useful context about which providers were tried or what errors occurred. Consider:

Suggested change

throw lastError || new Error("All OpenRouter providers failed")

const providersSummary = providers.join(', ');

throw lastError || new Error(`All OpenRouter providers failed (tried: ${providersSummary}). Last error: ${lastError?.message || 'Unknown'}`);

roomote · 2025-08-24T00:47:51Z

src/api/providers/openrouter.ts

+		for (let providerIndex = 0; providerIndex < providers.length; providerIndex++) {
+			try {
+				const currentProvider = providers[providerIndex]
+				console.log(


Consider using a proper logging service or making these debug-only logs. Production console logs can impact performance and clutter user consoles:

Suggested change

console.log(

if (process.env.NODE_ENV === 'development') {

console.log(

`[OpenRouter] Attempting request with provider: ${currentProvider} (${providerIndex + 1}/${providers.length})`,

)

}

roomote · 2025-08-24T00:47:51Z

packages/types/src/provider-settings.ts

 	openRouterBaseUrl: z.string().optional(),
-	openRouterSpecificProvider: z.string().optional(),
+	openRouterSpecificProvider: z.string().optional(), // Keep for backward compatibility
+	openRouterProviders: z.array(z.string()).max(4).optional(), // New multi-provider support


The 4-provider limit is a magic number. Consider defining it as a constant for better maintainability:

Suggested change

openRouterProviders: z.array(z.string()).max(4).optional(), // New multi-provider support

const MAX_OPENROUTER_PROVIDERS = 4;

// ...

openRouterProviders: z.array(z.string()).max(MAX_OPENROUTER_PROVIDERS).optional(),

roomote · 2025-08-24T00:47:51Z

src/api/providers/__tests__/openrouter-multi-provider.spec.ts

+			const providers = (handler as any).getProvidersToUse()
+			expect(providers).toEqual(["multi1", "multi2"])
+		})
+	})


Consider adding integration tests that simulate actual API failures with mock responses. The current tests only verify the logic but don't test the actual failover behavior with real-world error scenarios.

roomote · 2025-08-24T00:47:51Z

src/api/providers/openrouter.ts

+	/**
+	 * Get the list of providers to use, supporting both new multi-provider and legacy single provider config
+	 */
+	private getProvidersToUse(): string[] {


Consider adding JSDoc comments to explain the purpose and parameters of these new methods. This would improve code maintainability:

Suggested change

private getProvidersToUse(): string[] {

/**

* Get the list of providers to use for requests, supporting both multi-provider and legacy configurations

* @returns Array of provider names in priority order

*/

private getProvidersToUse(): string[] {

roomote · 2025-08-24T00:47:51Z

webview-ui/src/i18n/locales/en/settings.json

 				"title": "OpenRouter Provider Routing",
 				"description": "OpenRouter routes requests to the best available providers for your model. By default, requests are load balanced across the top providers to maximize uptime. However, you can choose a specific provider to use for this model.",
 				"learnMore": "Learn more about provider routing"
+			},


Good that you started adding i18n keys here, but the implementation is incomplete. You need to add all the missing keys mentioned in my other comments:

multiProvider.failoverEnabled

multiProvider.failoverDescription

The provider priority labels

Also ensure these are added to all other locale files.

shariqriazz · 2025-08-24T00:54:50Z

@roomote-agent Don't be shy, you can address all the issues you have found then switch to translate and fix translations as well. make sure you do it in same PR and not create new branches

roomote · 2025-08-24T00:56:28Z

Hi @shariqriazz! I see the review comments and will address all the issues found:

Fix missing i18n translations for hardcoded strings
Add proper error context in failover error messages
Make console logs development-only
Define MAX_OPENROUTER_PROVIDERS constant
Add JSDoc comments for new methods
Add translations to all locale files

I'll work on these fixes and also ensure all translations are properly added across all locale files. Working on it now!

roomote · 2025-08-24T01:02:58Z

Hi @shariqriazz! ✅ All requested changes have been completed and pushed to the PR:

Changes Made:

🌐 i18n Fixes

✅ Replaced all hardcoded strings with translation keys in OpenRouter.tsx and ApiOptions.tsx
✅ Added missing translation keys to English locale file
✅ Added translations to all 17 other locale files (ca, de, es, fr, hi, id, it, ja, ko, nl, pl, pt-BR, ru, tr, vi, zh-CN, zh-TW)

📝 Code Quality Improvements

✅ Added MAX_OPENROUTER_PROVIDERS constant to avoid magic numbers
✅ Improved error messages to include provider context and details
✅ Made console logs development-only using process.env.NODE_ENV checks
✅ Added comprehensive JSDoc comments to all new methods

✅ Testing

All tests passing locally:
- openrouter-multi-provider.spec.ts: 15 tests passed
- useSelectedModel-multiProvider.spec.ts: 4 tests passed
Translation validation script confirms all translations are complete

The changes maintain backward compatibility while addressing all the review feedback. The CI checks from the previous commit are showing failures, but those should be resolved with this new commit once the CI runs again.

RuntimeFlash · 2025-08-26T21:51:40Z

+1 required

shariqriazz requested review from cte, jr and mrubens as code owners August 24, 2025 00:43

github-project-automation bot added this to Roo Code Roadmap and Roo Code Roadmap Aug 24, 2025

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dosubot bot added size:XL This PR changes 500-999 lines, ignoring generated files. enhancement New feature or request labels Aug 24, 2025

shariqriazz marked this pull request as draft August 24, 2025 00:43

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	Enable automatic failover
	{t('settings:providers.openRouter.multiProvider.failoverEnabled')}

	Multiple Providers (up to 4)
	{t('settings:providers.openRouter.multiProvider.title')}

	Enable automatic failover
	{t("settings:providers.openRouter.multiProvider.failoverEnabled")}

-							Enable automatic failover
+<div className="text-sm text-vscode-descriptionForeground mt-1">
+  {t("settings:providers.openRouter.multiProvider.failoverDescription")}
+</div>

	throw lastError \|\| new Error("All OpenRouter providers failed")
	const providersSummary = providers.join(', ');
	throw lastError \|\| new Error(`All OpenRouter providers failed (tried: ${providersSummary}). Last error: ${lastError?.message \|\| 'Unknown'}`);

-	openRouterProviders: z.array(z.string()).max(4).optional(), // New multi-provider support
+const MAX_OPENROUTER_PROVIDERS = 4;
+// ...
+openRouterProviders: z.array(z.string()).max(MAX_OPENROUTER_PROVIDERS).optional(),

feat: add OpenRouter multi-provider failover support #7365

feat: add OpenRouter multi-provider failover support #7365

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shariqriazz commented Aug 24, 2025

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Changes Made:

🌐 i18n Fixes

📝 Code Quality Improvements

✅ Testing

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RuntimeFlash commented Aug 26, 2025

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shariqriazz commented Aug 24, 2025 •

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