Intent to Ship: Support transactional batchUpdate() and disallow batch inner locks
Yao Xiao
Contact emails
Explainer
https://github.com/WICG/shared-storage#proposed-api-surface
Specification
https://wicg.github.io/shared-storage/#batch-update
Summary
We are modifying the `sharedStorage.batchUpdate(methods)` API, introduced in the I2S 'Adding Web Locks Support to Shared Storage', to enforce atomicity. This involves treating the entire `batchUpdate()` as a single transaction, rather than executing methods independently. For simplicity, we do not support locks for the individual methods within the batchUpdate, but only on the batchUpdate itself.
Blink component
TAG review
TAG review status
TAG is unsatisfied with the underlying API
Risks
Compatibility
This change is not backward compatible. Specifically:
JavaScript `batchUpdate()` calls specifying inner method locks will now throw an exception.
"Shared-Storage-Write" response headers specifying inner method locks will cause the entire operation to be ignored.
Since `batchUpdate()` was recently released, it has not yet been adopted and the Chrome Features Dashboard confirms that this change should not break any sites.
Interoperability
Gecko: No signal
WebKit: No signal
Web developers: No signal
Other signals:
WebView application risks
Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications?
None
Security / Privacy
No concerns.
Debuggability
Shared Storage worklets can be inspected within DevTools: Debug Shared Storage worklets with DevTools
We are working on adding the `withLock` parameter and a `batchUpdate()` event to the Application -> Shared Storage panel in DevTools.
Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?
All but WebView
Is this feature fully tested by web-platform-tests?
Yes
Finch feature name
SharedStorageTransactionalBatchUpdate
Requires code in //chrome?
No
Estimated milestones
We intend to ship in M137
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5763021961691136
Chris Harrelson
--
You received this message because you are subscribed to the Google Groups "blink-dev" group.
To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+...@chromium.org.
To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/35e180ef-17df-474a-a5e5-7479fd9212b4n%40chromium.org.
Yoav Weiss (@Shopify)
To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscribe@chromium.org.
Mike Taylor
LGTM3
To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+...@chromium.org.
To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/3c412ebd-47c9-48ba-af63-5c9157f3ee91n%40chromium.org.