1
0
mirror of https://github.com/google/comprehensive-rust.git synced 2024-12-05 03:58:45 +02:00
comprehensive-rust/ga4.js
2022-12-21 16:38:28 +01:00

88 lines
3.5 KiB
JavaScript

// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Setup cookie consent banner.
var consent = document.createElement('script');
consent.setAttribute('data-autoload-cookie-consent-bar', 'true');
consent.setAttribute('src', 'https://www.gstatic.com/brandstudio/kato/cookie_choice_component/cookie_consent_bar.v3.js');
document.head.appendChild(consent);
// Load and configure Google Analytics.
var ga4 = document.createElement('script');
ga4.setAttribute('src', 'https://www.googletagmanager.com/gtag/js?id=G-ZN78TEJMRW');
document.head.appendChild(ga4);
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'G-ZN78TEJMRW');
// Look through all Playgrounds on the page to determine if the code snippet
// matches one of the. If the code is different from all Playgrounds, we
// conclude that the user modified the Playground before submitting it.
function isPlaygroundCodeModified(code) {
// It sounds expensive to look through every Playground, but there are
// normally at most two Playground instances on a page.
let playgrounds = Array.from(document.querySelectorAll(".playground"));
return playgrounds.every(playground => {
let code_block = playground.querySelector("code");
if (window.ace && code_block.classList.contains("editable")) {
let editor = window.ace.edit(code_block);
return code != editor.originalCode;
} else {
return code != code_block.textContent;
}
});
}
// Monkey-patch the window.fetch function so we can track the Playground
// executions.
const playgroundUrl = 'https://play.rust-lang.org/evaluate.json';
const { fetch: originalFetch } = window;
window.fetch = async (...args) => {
let [resource, config ] = args;
if (resource != playgroundUrl) {
return originalFetch(resource, config);
}
const startTime = window.performance.now();
let endTime, errorMessage;
try {
// The fetch_with_timeout function defaults to a 6000 ms timeout. We use a
// slightly shorter timeout so that we can catch and log the error.
config.signal = AbortSignal.timeout(5500);
let response = await originalFetch(resource, config);
payload = await response.json();
errorMessage = (payload.error == null) ? null : 'compilation_error';
// Return object compatible with the unpackign done in book.js.
return {'json': () => payload};
} catch (error) {
// fetch seems to always return AbortError, despite the example on
// https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal/timeout.
if (error.name == 'AbortError' || error.name == 'TimeoutError') {
error = new Error('timeout');
}
errorMessage = error.message;
throw error;
} finally {
endTime = window.performance.now();
let code = JSON.parse(config.body).code;
gtag("event", "playground", {
"modified": isPlaygroundCodeModified(code),
"error": errorMessage,
"latency": (endTime - startTime) / 1000,
});
}
};