Require that two promises are resolved (or one is rejected) before the
FETCH_COMPLETE action is dispatched. The first promise represents the
gateway request and the second represents an arbitrarily long delay. If
the first resolves before the second, then there'll be a delay until the
second resolves; whereas if the first rejects, then there's no delay.
Change-Id: I496fe317337745c593594efff26688c46d661bf3
The delay/timeout logic in actions#fetch will require more than one wait
call, for example.
Changes:
* Update the stub created in setupWait to store all deferred-promise
pairs and update the integration tests so that they don't use the stub
accidentally.
* Remove all references to the waitDeferred/waitPromise properties.
* Fix tests that relied on the waitDeferred/waitPromise properties being
available regardless of whether wait had been called.
* Update outdated or brittle - in the sense that it didn't reference
constants but their values - inline documentation.
Change-Id: I94345cdf4126b6c540d4fb8135a7a7e4d0507bed
Mixing in the delay was introduced in If3f1a06f so that the total RTT
for an API request could be calculated. Now that the FETCH_END action is
dispatched when the gateway request ends and not when the preview model
is resolved, this additional information (state) is redundant.
Change-Id: I7e6ffe0945ffedd9425525fa7da855e729d50b77
Ideally, the preview model is resolved after 500 ms, regardless of
whether the internal gateway takes 100 or 300 ms. Given this, there's an
important distinction to be made between the "fetch" ending and it
completing and their associated actions.
Changes:
* Dispatch the FETCH_COMPLETE action when the preview model is resolved.
* Update the reducers accordingly.
Change-Id: I62c9cb0430284b76338ea80bd170cac5af4be9d0
If the user has disabled PP via the settings dialog or they aren't in
the experimental condition, then link titles shouldn't be emptied.
Because this behavior has to respond to the user enabling/disabling PP
within the same page session, change the linkTitle change listener
rather than conditionally registering it.
Bug: T161277
Change-Id: I53c1a1d3e4436e2ffe08da27da388f394f4e8817
Binding the behavior to the preview before it's shown means that the
application will respond to user interactions with the preview even
though it's transparent.
This fixes scenario 4 from T159490.
Bug: T159490
Change-Id: Ia2d06869868d07af60bdeb49d46612a4a0dc02e9
If the user abandons link A (or preview A) and immediately dwells on
link B, then log a "dismissed" or "dwelledButAbandoned" event.
In this context, "immediately" means before the ABANDON_END action is
dispatched, which, currently, is 300 ms after the ABANDON_START action
is dispatched.
Bug: T159490
Change-Id: I49f0f5dfb3e6c08844f1794fee8cb6170e93981b
Reducer changes:
* Add tests for ABANDON_END case.
* Extract the body of the ABANDON_END case into the createAbandonEvent
helper function.
Additional changes:
* totalInteractionProperty -> totalInteractionTime elsewhere in the same
file.
Bug: T159490
Change-Id: Ifff34271395f330b83cfe487e84800fe2d6f3811
Reducer changes:
* Make the eventLogging reducer queue a "tapped settings cog" event when
reducing the SETTINGS_SHOW action.
This was discovered while testing I6ce7d72b.
Bug: T159490
Change-Id: I6ce7d72b364d20c71b0e2cfed98e99f7997895e5
Like dwelling and abandoning, clicking on a preview is the same as
clicking on a link.
This fixes scenario 3 from T159490.
Bug: T159490
Change-Id: I6d9ff52b62bec93ebfcc9b6d267a46cf961852fb
For now, mirror the interaction modelling in the preview reducer in the
eventLogging reducer to handle the user either:
* Repeatedly dwelling on and abandoning a link.
* (Repeatedly) moving their mouse between the link and the preview.
This fixes scenarios 1, 2, 5, and the general issue from T159490.
Bug: T159490
Change-Id: Ia771f325e541c107348b16b47c5b786c97847652
Step 1 of T161284. Given that the median API response time (as measured
by the client) is ~115 ms [0] and the API response is artificially
delayed so that the preview starts fading in at 500 ms, we can increase
the API request delay to 150 ms without affecting the current UX while
decreasing the number of incidental HTTP requests triggered by the user
glancing their mouse over a link to another page.
[0] https://grafana.wikimedia.org/dashboard/db/reading-web-page-previews
Bug: T161284
Change-Id: I4c4a766467cdb4cd47c4231c1106c35bab67855e
When EventLogging is unavailable do not initialise the EL-related code
or try to send any events.
When EL is enabled for a brand new user we request an additional module
during boot causing an additional HTTP request. Page Previews continues
to boot normally regardless of whether the request fails.
This approach doesn't impact boot or first paint time. Once the module
is loaded once it should be cached locally, subject to the
ResourceLoader's policy. Moreover, the RL will not attempt to load the
module twice so this doesn't impact the performance of other modules.
Bug: T158999
Change-Id: I7ed7f00d52279151ece23e5aced4f2adb0f7fdc3
... container.
I19e67ae4 hide the overflowing parts of the SVG image element in IE9-11
for a number of cases but not all of them, e.g. see T139297#3089714.
Moving the overflow: hidden property to the SVG element fixes the above
case and is clearer.
Tested in IE9-11 on Windows 7, and Chrome (56.0.2924.87) on macOS Sierra
(10.12.3).
Bug: T139297
Change-Id: I9c397d7333766b40abbf14b6ade96788f5023dfa
Changes:
- remove focus events listeners as they are triggered after switching tabs
- show PagePreview on keyup event
Bug: T158631
Change-Id: I7533f896604e0e0a8ea6e900ae4f7d12b6458836
IE doesn't appear to update/redraw the SVG image element when Setting
its clip-path attribute to '', not removing it. This is problematic as
the attribute is always set to a default value (in the createThumbnail
function) before the preview is laid out.
Bug: T160237
Change-Id: I4559ff5018b8f4ecf06f6f5d9462a999d9726b94
For logging to work:
1. $wgWMEStatsdBaseUri needs to point to a valid statsv endpoint,
e.g. 'https://en.wikipedia.org/beacon/statsv'.
2. $wgPopupsStatsvSamplingRate needs to be set. Note that the codebase
already contains the EventLogging functionality, which is configured
separately. Separately configuring different logging mechanisms
allows us to avoid sampling mistakes that may arise while choosing
one or the other. For example, let's say we want to use EventLogging for
10% of users and statsv for 5%. We'd sample all users into two
buckets: 50/50. And then we'd have to set the sampling rates as
20% and 10% respectively, only because of the bucketing above. To avoid
this kind of complications, separate sampling rates are used for each
logging mechanism. This, of course, may result in situations where a
session is logged via both EventLogging and statsv.
3. The WikimediaEvents extension needs to be installed. The extension
adds the `ext.wikimediaEvents` module to the output page. The
logging functionality is delegated to this module.
Notable changes:
* The FETCH_START and FETCH_END actions are converted to a timed action.
* The experiments stub used in tests has been extracted to the stubs
file.
Logged data is visualized at
https://grafana.wikimedia.org/dashboard/db/reading-web-page-previews
Bug: T157111
Change-Id: If3f1a06f1f623e8e625b6c30a48b7f5aa9de24db
... thumbnails.
A good example of the difference in behaviour of the PageImages API is
here <T156800#3087507>. The API defers to File#transform, which scales
the largest dimension of an image, not always the width, e.g. if an
image is 1000px x 2000px and the request is for a thumbnail "of 1800px",
then the thumbnail will be 900px x 1800px.
Bug: T156800
Change-Id: I64bc2244ee78a594298d8637233b0da1083700eb
Keep all configuration-like values in one file.
Changes:
- moved EXTRACT_LENGTH to constants.js file
Change-Id: Ibe5ecfc60f2c09a30a9ecb3586bc5fb6a7365476
Webpack 1.14.0 is an old version, switch to using latest stable which
has better documentation, tree shaking, ES2015 modules and a core team
of contributors with funding. See https://webpack.js.org/
Additional changes:
* Recompile the frontend assets
Change-Id: I2c5940276e99dee104d04c6a0b83d8ab36a99df5
If the image isn't an SVG then it shouldn't be scaled past its original
dimensions. Handle the case where the requested thumbnail can't be
generated on the server as the original is too small ( < 320px,
currently [0]) in the same way.
Moreover, if the image happens to have the exact dimensions that we're
requesting (300px or 600px wide, currently [1]), then use the original
image to avoid unnecessary work/pressure on caches.
Supporting changes:
* Update the SVG_RESTBASE_RESPONSE fixture to use the extension returned
by RESTBase (and the PageImages extension) for the thumbnail:
.svg.png.
[0] https://github.com/wikimedia/restbase/blob/master/v1/summary.yaml#L121
[1] https://github.com/wikimedia/mediawiki-extensions-Popups/blob/master/src/constants.js#L2
Bug: T156800
Change-Id: I5d0aa161e80869e4b4f5425d906d1e753047a3a3
Instead of importing the modules from sources (which you should do if
you properly define NODE_ENV and use uglifyjs from webpack) import the
already compiled files on the npm packages.
This results in 5kb less on the compiled bundle.
Change-Id: I83732ea79a59b611c117ddcf4c262948c795f642
