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feat: add framework device token compare-and-set - #583
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Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
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Included review availability: This review used your included allowance. 8 included reviews remain after this review. Your included PR review attempts over the past 7 days set your current allowance at 10 reviews per hour. 📝 WalkthroughWalkthroughAdds Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Suggested reviewers: Merge Risk: 🔵 Low · up to The new compare-and-set protects against stale writes within one app, but it cannot guard against another app in the same Keychain group writing at the same instant. The window is narrow. Document this limit or accept it before merging. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
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…-set-device-token # Conflicts: # Sources/ClerkKit/Identity/ClerkIdentityController.swift # Tests/Core/SharedSessionSyncTests.swift
…-set-device-token # Conflicts: # Sources/ClerkKit/Identity/ClerkIdentityController.swift
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
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Inline comments:
Review comments at @Sources/ClerkKit/Identity/ClerkIdentityController.swift:
- Around line 157-158: Update the operation containing adoptStoredDeviceToken()
so its comparison and write are coordinated across all shared-Keychain token
writers; if cross-app atomic coordination is unavailable, stop exposing this
operation as an atomic compare-and-set and avoid returning true based on a
potentially stale comparison.
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Sources/ClerkKit/Core/Clerk+DeviceToken.swiftSources/ClerkKit/Identity/ClerkIdentityController.swiftTests/Domains/Client/ClientTests.swift
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What & why
Adds
@_spi(FrameworkIntegration) Clerk.setDeviceToken(_ token: String?, expected: String?) async throws -> Bool, a compare-and-set on the stored device token that makes no network request.In
@clerk/expo, clerk-js and ClerkKit are two clients of the same FAPI client. We're moving to a model where ClerkKit is the single owner of the device token: clerk-js reads the token from native before each FAPI request and writes rotated tokens back after each response. That write has to be conditional on the token the JS request was sent with, so a stale response can never overwrite a newer token, and it has to be cheap.updateDeviceToken(_:)clears the client and refetches it, which is too heavy for per-response writes. Client state is still synced separately (JS asks native torefreshClient()when it needs to).The write follows the same path as a token-only network response: the current client and server-date watermark are kept, the token changes, and client responses are fenced so native requests sent with the old token can't apply. Passing
nilclears the token and the client. Blank tokens throwDeviceTokenError.emptyToken.What to focus on
ClerkIdentityController.compareAndSetDeviceTokenruns the compare and the write synchronously on the main actor, through the samecommitpath as network responses (refactor: share the device token through the Keychain access group #579 removed the separate persistence modes). It first adopts a token another app in the same Keychain access group may have written, so the compare is against the current stored token.updateDeviceTokendoes) assumes the rotated token belongs to the same FAPI client.🤖 Generated with Claude Code