mediawiki-skins-Vector/resources/skins.vector.search/instrumentation.js

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/* global FetchEndEvent, SuggestionClickEvent, SubmitEvent */
/** @module Instrumentation */
/**
* The value of the `inputLocation` property of any and all SearchSatisfaction events sent by the
* corresponding instrumentation.
*
* @see https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/skins/Vector/+/refs/heads/master/includes/Constants.php
*/
var INPUT_LOCATION_MOVED = 'header-moved',
wgScript = mw.config.get( 'wgScript' ),
// T251544: Collect search performance metrics to compare Vue search with
// mediawiki.searchSuggest performance. Marks and Measures will only be
// recorded on the Vector skin and only if browser supported.
shouldTestSearchPerformance = !!( window.performance &&
window.requestAnimationFrame &&
performance.mark &&
performance.measure &&
performance.getEntriesByName &&
performance.clearMarks ),
loadStartMark = 'mwVectorVueSearchLoadStart',
queryMark = 'mwVectorVueSearchQuery',
renderMark = 'mwVectorVueSearchRender',
queryToRenderMeasure = 'mwVectorVueSearchQueryToRender',
loadStartToFirstRenderMeasure = 'mwVectorVueSearchLoadStartToFirstRender';
function onFetchStart() {
if ( !shouldTestSearchPerformance ) {
return;
}
// Clear past marks that are no longer relevant. This likely means that the
// search request failed or was cancelled. Whatever the reason, the mark
// is no longer needed since we are only interested in collecting the time
// from query to render.
if ( performance.getEntriesByName( queryMark ).length ) {
performance.clearMarks( queryMark );
}
performance.mark( queryMark );
}
/**
* @param {FetchEndEvent} event
*/
function onFetchEnd( event ) {
mw.track( 'mediawiki.searchSuggest', {
action: 'impression-results',
numberOfResults: event.numberOfResults,
// resultSetType: '',
// searchId: '',
query: event.query,
inputLocation: INPUT_LOCATION_MOVED
} );
if ( shouldTestSearchPerformance ) {
// Schedule the mark after the search results have rendered and are
// visible to the user. Two rAF's are needed for this since rAF will
// execute before the rendering steps happen (e.g. layout and paint). A
// nested rAF will execute after these rendering steps have completed
// and ensure the search results are visible to the user.
requestAnimationFrame( function () {
requestAnimationFrame( function () {
if ( !performance.getEntriesByName( queryMark ).length ) {
return;
}
performance.mark( renderMark );
performance.measure( queryToRenderMeasure, queryMark, renderMark );
// Measure from the start of the lazy load to the first render if we
// haven't already captured that info.
if ( performance.getEntriesByName( loadStartMark ).length &&
!performance.getEntriesByName( loadStartToFirstRenderMeasure ).length ) {
performance.measure( loadStartToFirstRenderMeasure, loadStartMark, renderMark );
}
// The measures are the most meaningful info so we remove the marks
// after we have the measure.
performance.clearMarks( queryMark );
performance.clearMarks( renderMark );
} );
} );
}
}
/**
* @param {SuggestionClickEvent|SubmitEvent} event
*/
function onSuggestionClick( event ) {
mw.track( 'mediawiki.searchSuggest', {
action: 'click-result',
numberOfResults: event.numberOfResults,
index: event.index
} );
}
/**
* Generates the value of the `wprov` parameter to be used in the URL of a search result and the
* `wprov` hidden input.
*
* See https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/WikimediaEvents/+/refs/heads/master/modules/ext.wikimediaEvents/searchSatisfaction.js
* and also the top of that file for additional detail about the shape of the parameter.
*
* @param {number} index
* @return {string}
*/
function getWprovFromResultIndex( index ) {
// If the user hasn't highlighted an autocomplete result.
if ( index === -1 ) {
return 'acrw1';
}
return 'acrw1' + index;
}
/**
* @typedef {Object} SearchResultPartial
* @property {string} title
*/
/**
* @typedef {Object} GenerateUrlMeta
* @property {number} index
*/
/**
* Used by the `wvui-typeahead-search` component to generate URLs for the search results. Adds a
* `wprov` paramater to the URL to satisfy the SearchSatisfaction instrumentation.
*
* @see getWprovFromResultIndex
*
* @param {SearchResultPartial|string} suggestion
* @param {GenerateUrlMeta} meta
* @return {string}
*/
function generateUrl( suggestion, meta ) {
var result = new mw.Uri( wgScript );
if ( typeof suggestion !== 'string' ) {
suggestion = suggestion.title;
}
result.query.title = 'Special:Search';
result.query.suggestion = suggestion;
result.query.wprov = getWprovFromResultIndex( meta.index );
return result.toString();
}
module.exports = {
listeners: {
onFetchStart: onFetchStart,
onFetchEnd: onFetchEnd,
onSuggestionClick: onSuggestionClick,
// As of writing (2020/12/08), both the "click-result" and "submit-form" kind of
// mediawiki.searchSuggestion events result in a "click" SearchSatisfaction event being
// logged [0]. However, when processing the "submit-form" kind of mediawiki.searchSuggestion
// event, the SearchSatisfaction instrument will modify the DOM, adding a hidden input
// element, in order to set the appropriate provenance parameter (see [1] for additional
// detail).
//
// In this implementation of the mediawiki.searchSuggestion protocol, we don't want to
// trigger the above behavior as we're using Vue.js, which doesn't expect the DOM to be
// modified underneath it.
//
// [0] https://gerrit.wikimedia.org/g/mediawiki/extensions/WikimediaEvents/+/df97aa9c9407507e8c48827666beeab492fd56a8/modules/ext.wikimediaEvents/searchSatisfaction.js#735
// [1] https://phabricator.wikimedia.org/T257698#6416826
onSubmit: onSuggestionClick
},
getWprovFromResultIndex: getWprovFromResultIndex,
generateUrl: generateUrl
};