jiti-meet/react/features/rtcstats/middleware.js

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// @flow
import { getAmplitudeIdentity } from '../analytics';
import {
CONFERENCE_JOINED
} from '../base/conference';
import { LIB_WILL_INIT } from '../base/lib-jitsi-meet';
import { getLocalParticipant } from '../base/participants';
import { MiddlewareRegistry } from '../base/redux';
import RTCStats from './RTCStats';
import { isRtcstatsEnabled } from './functions';
import logger from './logger';
/**
* Middleware which intercepts lib-jitsi-meet initialization and conference join in order init the
* rtcstats-client.
*
* @param {Store} store - The redux store.
* @returns {Function}
*/
MiddlewareRegistry.register(store => next => action => {
const state = store.getState();
const config = state['features/base/config'];
const { analytics } = config;
switch (action.type) {
case LIB_WILL_INIT: {
if (isRtcstatsEnabled(state)) {
// RTCStats "proxies" WebRTC functions such as GUM and RTCPeerConnection by rewriting the global
// window functions. Because lib-jitsi-meet uses references to those functions that are taken on
// init, we need to add these proxies before it initializes, otherwise lib-jitsi-meet will use the
// original non proxy versions of these functions.
try {
// Default poll interval is 1000ms if not provided in the config.
const pollInterval = analytics.rtcstatsPollInterval || 1000;
// Initialize but don't connect to the rtcstats server wss, as it will start sending data for all
// media calls made even before the conference started.
RTCStats.init({
rtcstatsEndpoint: analytics.rtcstatsEndpoint,
rtcstatsPollInterval: pollInterval
});
} catch (error) {
logger.error('Failed to initialize RTCStats: ', error);
}
}
break;
}
case CONFERENCE_JOINED: {
if (isRtcstatsEnabled(state) && RTCStats.isInitialized()) {
// Once the conference started connect to the rtcstats server and send data.
try {
RTCStats.connect();
const localParticipant = getLocalParticipant(state);
// The current implementation of rtcstats-server is configured to send data to amplitude, thus
// we add identity specific information so we can corelate on the amplitude side. If amplitude is
// not configured an empty object will be sent.
// The current configuration of the conference is also sent as metadata to rtcstats server.
// This is done in order to facilitate queries based on different conference configurations.
// e.g. Find all RTCPeerConnections that connect to a specific shard or were created in a
// conference with a specific version.
RTCStats.sendIdentityData({
...getAmplitudeIdentity(),
...config,
displayName: localParticipant?.name
});
} catch (error) {
// If the connection failed do not impact jitsi-meet just silently fail.
logger.error('RTCStats connect failed with: ', error);
}
}
break;
}
}
return next(action);
});