Intent to Extend Experiment: Declarative Link Capturing for PWAs

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Alan Cutter

belum dibaca,
25 Agu 2021, 05.33.1425/08/21
kepadablink-dev, Matt Giuca, tbuc...@chromium.org, Trevor Lu, Penny McLachlan, Chris Harrelson

Contact emails

mgi...@chromium.org, alanc...@chromium.org, tbuc...@chromium.org


Explainer

https://github.com/WICG/sw-launch/blob/master/declarative_link_capturing.md


Specification

None


Summary

New Web App Manifest member to control what happens when the user navigates to a page within scope of an installed web app.


This feature introduces the "capture_links" member, an enumeration allowing the customization of link capturing behaviour, allowing sites to:


- Automatically open a new PWA window when the user clicks a link to their app.

- Have a "single window mode" like mobile apps.



Blink component

UI>Browser>WebAppInstalls


Search tags

pwa, link capturing


TAG review

https://github.com/w3ctag/design-reviews/issues/589


TAG review status

In progress


Risks

Interoperability and Compatibility

Very small, since any browser not implementing this will just fall back to the standard behaviour, which is to navigate to links in a browser tab.
This member is also forwards compatible as it can accept a list of behaviours, older browsers will bypass any new ones that are added later. Gecko: No signal


Edge: Strong positive, this compliments their efforts for url_handlers.


WebKit: No signal


Web developers: No signals



Reason this experiment is being extended

A new API shape, Launch Handling, has evolved from the current spec work on Declarative Link Capturing and URL Handlers. Transition doc.
This extension is being requested to enable existing uses of the DLC experiment transition over to the Launch Handling API once it is ready for experimentation.
Previous experiment timeline: M90 to M93
Requested extension timeline: M94 to M97


Ongoing technical constraints

None


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

Not supported on Android, their window model doesn’t make sense for “new-client”.


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

No


Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5734953453092864


Links to previous Intent discussions

Intent to prototype: https://groups.google.com/a/chromium.org/g/blink-dev/c/2ZnA1IrSpS8

Intent to experiment: https://groups.google.com/a/chromium.org/g/blink-dev/c/q6ivDcvAJwQ/m/XTlva-lGBQAJ




This intent message was generated by Chrome Platform Status.


Yoav Weiss

belum dibaca,
25 Agu 2021, 09.46.4825/08/21
kepadaAlan Cutter, Jason Chase, blink-dev, Matt Giuca, tbuc...@chromium.org, Trevor Lu, Penny McLachlan, Chris Harrelson
It may make sense to reach out for signals at some point. https://bit.ly/blink-signals
 

Web developers: No signals


Don't you have developers already participating in the OT?
 


Reason this experiment is being extended

A new API shape, Launch Handling, has evolved from the current spec work on Declarative Link Capturing and URL Handlers. Transition doc.

That seems like a significant change. Would it make sense to send out a separate intent to experiment, to make that part clearer?

 
This extension is being requested to enable existing uses of the DLC experiment transition over to the Launch Handling API once it is ready for experimentation.

I think we can have different intents, but still converge on the same experiment tokens, to avoid churn for existing users. +Jason Chase, is that actually correct?
 
Previous experiment timeline: M90 to M93
Requested extension timeline: M94 to M97


Ongoing technical constraints

None


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

Not supported on Android, their window model doesn’t make sense for “new-client”.


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

No


Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5734953453092864


Links to previous Intent discussions

Intent to prototype: https://groups.google.com/a/chromium.org/g/blink-dev/c/2ZnA1IrSpS8

Intent to experiment: https://groups.google.com/a/chromium.org/g/blink-dev/c/q6ivDcvAJwQ/m/XTlva-lGBQAJ




This intent message was generated by Chrome Platform Status.


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Alan Cutter

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26 Agu 2021, 05.12.0526/08/21
kepadaYoav Weiss, Jason Chase, blink-dev, Matt Giuca, tbuc...@chromium.org, Trevor Lu, Penny McLachlan, Chris Harrelson
Will be reaching out for signals on the Launch Handling API instead as it develops.
 
 

Web developers: No signals


Don't you have developers already participating in the OT?

Sorry, should have updated this. Strong positive from existing clients using DLC, unfortunately I can't point to any public statements here.
 
 


Reason this experiment is being extended

A new API shape, Launch Handling, has evolved from the current spec work on Declarative Link Capturing and URL Handlers. Transition doc.

That seems like a significant change. Would it make sense to send out a separate intent to experiment, to make that part clearer?

Sorry it wasn't clear. This extension is not intended for the Launch Handling API, that will be a separate experiment request later once it's ready. This extension is intended to create an overlap between the DLC and LH experiments so existing DLC users can transition over to LH.

Yoav Weiss

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26 Agu 2021, 14.32.2826/08/21
kepadaAlan Cutter, Jason Chase, blink-dev, Matt Giuca, tbuc...@chromium.org, Trevor Lu, Penny McLachlan, Chris Harrelson
LGTM to extend M94-M97

Jason Chase

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26 Agu 2021, 17.33.1926/08/21
kepadaYoav Weiss, Alan Cutter, blink-dev, Matt Giuca, tbuc...@chromium.org, Trevor Lu, Penny McLachlan, Chris Harrelson
Likely a moot point now, but...
Assuming you mean different intents = different trials shown in the OT console, it's not possible to use the same tokens. The name used in the tokens has to be unique across trials.

Yoav Weiss

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27 Agu 2021, 02.45.2527/08/21
kepadaJason Chase, Alan Cutter, blink-dev, Matt Giuca, tbuc...@chromium.org, Trevor Lu, Penny McLachlan, Chris Harrelson
OK, thanks! That's useful info (for next time).

Alan Cutter

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11 Nov 2021, 03.11.4911/11/21
kepadablink-dev, Yoav Weiss, Alan Cutter, blink-dev, Matt Giuca, tbuc...@chromium.org, trev...@google.com, Penny McLachlan, Chris Harrelson, Jason Chase

Request to extend M97 experiment end date to avoid breaking sites while transitioning to the new launch_handler API.

 - The launch_handler experiment has been approved for M97-M102 but due to implementation issues will start in M98.

 - To allow clients to migrate over to launch_handler seamlessly we need to keep the DLC behavior available until existing users have had a chance to update to M98.

 - To cover the February M98 Chrome OS rollout this extension request is to go up to 2022-03-31 (assuming ~1 month to roll out to a majority of users).

 - To avoid burn-in risk we will remove DLC from M98. This is the same strategy that the Digital Goods API experiment took for their v2 migration.

Previous experiment timeline: M90 to M93 Approved extension timeline: M94 to M97 Requested extension timeline: Up to 2022-03-31 but only for M97 browsers and earlier.


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Alan Cutter

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18 Nov 2021, 01.25.0618/11/21
kepadablink-dev, Alan Cutter, Yoav Weiss, blink-dev, Matt Giuca, tbuc...@chromium.org, trev...@google.com, Penny McLachlan, Chris Harrelson, Jason Chase
Friendly ping.

Alex Russell

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18 Nov 2021, 15.17.0218/11/21
kepadablink-dev, Alan Cutter, Yoav Weiss, blink-dev, Matt Giuca, tbuc...@chromium.org, trev...@google.com, Penny McLachlan, Chris Harrelson, Jason Chase
LGTM1

Alex Russell

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18 Nov 2021, 15.20.1018/11/21
kepadablink-dev, Alex Russell, Alan Cutter, Yoav Weiss, blink-dev, Matt Giuca, tbuc...@chromium.org, trev...@google.com, Penny McLachlan, Chris Harrelson, Jason Chase
API OWNERS just discussed, and we also decided that this intent only needs a single vote (rather than 3). You're good to go!

Alan Cutter

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18 Nov 2021, 17.27.3018/11/21
kepadablink-dev, Alex Russell, Alan Cutter, Yoav Weiss, blink-dev, Matt Giuca, tbuc...@chromium.org, trev...@google.com, Penny McLachlan, Chris Harrelson, Jason Chase
Brilliant, thanks!

Alan Cutter

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13 Mar 2022, 22.24.2613/03/22
kepadablink-dev, Alan Cutter, Alex Russell, Yoav Weiss, blink-dev, Matt Giuca, tbuc...@chromium.org, trev...@google.com, Penny McLachlan, Chris Harrelson, Jason Chase
Request to extend the M97 end date for this origin trial from 2022-03-31 by 3 months to 2022-06-30.
There are still clients running M97 (especially in enterprise environments) that can't yet make use of the replacement launch_handler API (added in M98). Our analysis suggest an additional 3 months is sufficient for them to transition over smoothly.

API burn in risk: Low; the DLC API trial was removed in M98 and cannot be revived, its full removal is guaranteed as a matter of time based on client populations updating to M98+.

Alan Cutter

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14 Mar 2022, 00.20.4014/03/22
kepadablink-dev, Alan Cutter, Alex Russell, Yoav Weiss, blink-dev, Matt Giuca, tbuc...@chromium.org, trev...@google.com, Penny McLachlan, Chris Harrelson, Jason Chase
Amendment: The lag of M97 clients for this API is predominately seen in education rather than enterprise.

Yoav Weiss

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14 Mar 2022, 03.51.1814/03/22
kepadaAlan Cutter, blink-dev, Alex Russell, Matt Giuca, tbuc...@chromium.org, trev...@google.com, Penny McLachlan, Chris Harrelson, Jason Chase
Hey Alan,

As this is an exceptional request, I believe this requires 3 LGTMs.

The risk present here is that we'd be creating some breakage risk from terminating the OT ~3 months down the line. Weighing this risk compared to the inherent OT risk we're already exposed to, it doesn't seem like the 3 months extension would significantly increase it. The fact that the main users for this are in the education sector makes me speculate that an extension would reduce breakage risk, as many of those are likely to be on their (north hemisphere) summer break. 

Therefore, I believe an extension is reasonable.

LGTM1

Brilliant, thanks!

LGTM1

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Mike Taylor

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14 Mar 2022, 08.59.0414/03/22
kepadaYoav Weiss, Alan Cutter, blink-dev, Alex Russell, Matt Giuca, tbuc...@chromium.org, trev...@google.com, Penny McLachlan, Chris Harrelson, Jason Chase
Yoav's reasoning sounds good to me. LGTM2.

Chris Harrelson

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14 Mar 2022, 13.10.2114/03/22
kepadaMike Taylor, Yoav Weiss, Alan Cutter, blink-dev, Alex Russell, Matt Giuca, tbuc...@chromium.org, trev...@google.com, Penny McLachlan, Jason Chase

Alan Cutter

belum dibaca,
14 Mar 2022, 20.08.2214/03/22
kepadablink-dev, Chris Harrelson, Yoav Weiss, Alan Cutter, blink-dev, Alex Russell, Matt Giuca, tbuc...@chromium.org, trev...@google.com, Penny McLachlan, Jason Chase, Mike Taylor
Thanks again!

Brilliant, thanks!

LGTM1

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