Intent to Experiment: FileSystemObserver interface

[Daseul Lee]

Contact emails

asu...@chromium.org, ay...@chromium.org, chris...@chromium.org, ds...@chromium.org, mem...@chromium.org

Explainer

https://github.com/whatwg/fs/blob/main/proposals/FileSystemObserver.md

Specification

https://github.com/whatwg/fs/pull/165

Design docs

https://docs.google.com/document/d/1d6YoPvk0rdNBQaZcoFP-V5u4CBjgahvmnVsZpbn0Gmo/edit?usp=sharing

Summary

The FileSystemObserver interface notifies websites of changes to the file system. Sites observe changes to files and directories in the user's local device (as specified in WICG/file-system-access) or in the Bucket File System (as specified in whatwg/fs), and are notified of basic change info, such as the change type.

Blink component

Blink>Storage>FileSystem

TAG review

Exempt per early TAG design review: https://github.com/w3ctag/design-reviews/issues/868

Risks

Interoperability and Compatibility

Gecko: Positive (https://github.com/mozilla/standards-positions/issues/942) Positive on use-case

WebKit: No signal (https://github.com/WebKit/standards-positions/issues/291)

Web developers: Strongly positive (https://github.com/WICG/file-system-access/issues/72)

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?

Not enabled in WebView

Goals for experimentation

- Obtain more web developer feedback to validate the API shape

- Identify any major performance issues against real world use cases, that could help determining future improvements and optimizations

Ongoing technical constraints

None

Debuggability

N/A

Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?

No. Available on desktop only.

Is this feature fully tested by web-platform-tests?

Yes

https://wpt.fyi/results/fs/FileSystemObserver.https.tentative.window.html?label=experimental&label=master&aligned

Flag name on chrome://flags

file-system-observer

Finch feature name

FileSystemObserver

Requires code in //chrome?

False

Tracking bug

https://issues.chromium.org/40105284

Launch bug

https://launch.corp.google.com/launch/4261040

Estimated milestones

Origin trial desktop first	129
Origin trial desktop last	134

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/4622243656630272?gate=5110010073317376

Links to previous Intent discussions

Intent to prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAGnvaEXNQ0OUo61DXeuhzARPyOu_E6vA6VsD6%2BBwVDGW_0BQJw%40mail.gmail.com

This intent message was generated by Chrome Platform Status.

[Yoav Weiss (@Shopify)]

LGTM to experiment M129-M134 inclusive.

On Tue, Jul 30, 2024 at 9:39 PM Daseul Lee <ds...@chromium.org> wrote:

Contact emails

asu...@chromium.org, ay...@chromium.org, chris...@chromium.org, ds...@chromium.org, mem...@chromium.org

Explainer

https://github.com/whatwg/fs/blob/main/proposals/FileSystemObserver.md

Specification

https://github.com/whatwg/fs/pull/165

Design docs

https://docs.google.com/document/d/1d6YoPvk0rdNBQaZcoFP-V5u4CBjgahvmnVsZpbn0Gmo/edit?usp=sharing

Thanks for the public design doc!

It's a shame that the security review is hidden behind a Google-internal doc and the Launch process.

While I understand how some security related discussions can't be made public, it would have been good for me as a reviewer to get a better understanding of e.g. the UI patterns that users will go through in order to approve a site to watch their files/directories.

At the same time, I trust the Chrome security folks on this.

--
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 on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAPhTbOjWuKV_MpRhG3bZ3Oj%3Dy5eQCvdR6iGBDrM%2BqTGpwgiWGQ%40mail.gmail.com.