theluyuan
38ba663466
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Close stale issues and PRs / stale (push) Has been cancelled
55 lines
1.7 KiB
TypeScript
55 lines
1.7 KiB
TypeScript
import { AnyAction } from 'redux';
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import MiddlewareRegistry from '../redux/MiddlewareRegistry';
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import { isEmbedded } from '../util/embedUtils';
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import { APP_WILL_MOUNT, APP_WILL_UNMOUNT } from './actionTypes';
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import logger from './logger';
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/**
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* Experimental feature to monitor CPU pressure.
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*/
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let pressureObserver: typeof window.PressureObserver;
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/**
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* Middleware which intercepts app actions to handle changes to the related state.
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*
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* @param {Store} store - The redux store.
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* @returns {Function}
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*/
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MiddlewareRegistry.register(() => (next: Function) => (action: AnyAction) => {
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switch (action.type) {
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case APP_WILL_MOUNT: {
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// Disable it inside an iframe until Google fixes the origin trial for 3rd party sources:
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// https://bugs.chromium.org/p/chromium/issues/detail?id=1504167
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if (!isEmbedded() && 'PressureObserver' in window) {
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pressureObserver = new window.PressureObserver(
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(records: typeof window.PressureRecord) => {
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logger.info('Compute pressure state changed:', JSON.stringify(records));
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APP.API.notifyComputePressureChanged(records);
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}
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);
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try {
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pressureObserver
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.observe('cpu', { sampleInterval: 30_000 })
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.catch((e: any) => logger.error('CPU pressure observer failed to start', e));
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} catch (e: any) {
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logger.error('CPU pressure observer failed to start', e);
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}
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}
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break;
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}
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case APP_WILL_UNMOUNT: {
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if (pressureObserver) {
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pressureObserver.unobserve('cpu');
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}
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break;
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}
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}
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return next(action);
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});
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