feat(analytics): local tracks duration event.

react/features/analytics/AnalyticsEvents.js

@@ -372,6 +372,28 @@ export function createLiveStreamingDialogEvent(dialogName, buttonName) {
     };
 }
 
+/**
+ * Creates an event with the local tracks duration.
+ *
+ * @param {Object} duration - The object with the duration of the local tracks.
+ * @returns {Object} The event in a format suitable for sending via
+ * sendAnalytics.
+ */
+export function createLocalTracksDurationEvent(duration) {
+    const { audio, video, conference } = duration;
+    const { camera, desktop } = video;
+
+    return {
+        action: 'local.tracks.durations',
+        attributes: {
+            audio: audio.value,
+            camera: camera.value,
+            conference: conference.value,
+            desktop: desktop.value
+        }
+    };
+}
+
 /**
  * Creates an event which indicates that an action related to recording has
  * occured.

react/features/analytics/actionTypes.js

@@ -0,0 +1,11 @@
+// @flow
+
+/**
+ * The type of (redux) action which signals that local media duration has changed.
+ *
+ * {
+ *     type: UPDATE_LOCAL_TRACKS_DURATION,
+ *     localTracksDuration: Object
+ * }
+ */
+export const UPDATE_LOCAL_TRACKS_DURATION = 'UPDATE_LOCAL_TRACKS_DURATION';

react/features/analytics/index.js

@@ -2,3 +2,4 @@ export * from './AnalyticsEvents';
 export * from './functions';
 
 import './middleware';
+import './reducer';

react/features/analytics/middleware.js

@@ -1,8 +1,74 @@
-import { SET_ROOM } from '../base/conference';
+// @flow
+
+import {
+    CONFERENCE_JOINED,
+    CONFERENCE_WILL_LEAVE,
+    SET_ROOM
+} from '../base/conference';
 import { SET_CONFIG } from '../base/config';
 import { MiddlewareRegistry } from '../base/redux';
+import {
+    getLocalAudioTrack,
+    getLocalVideoTrack,
+    TRACK_ADDED,
+    TRACK_REMOVED,
+    TRACK_UPDATED
+} from '../base/tracks';
 
-import { initAnalytics, resetAnalytics } from './functions';
+import { UPDATE_LOCAL_TRACKS_DURATION } from './actionTypes';
+import { createLocalTracksDurationEvent } from './AnalyticsEvents';
+import { initAnalytics, resetAnalytics, sendAnalytics } from './functions';
+
+/**
+ * Calculates the duration of the local tracks.
+ *
+ * @param {Object} state - The redux state.
+ * @returns {Object} - The local tracks duration.
+ */
+function calculateLocalTrackDuration(state) {
+    const now = Date.now();
+    const { localTracksDuration } = state['features/analytics'];
+    const { conference } = state['features/base/conference'];
+    const { audio, video } = localTracksDuration;
+    const { camera, desktop } = video;
+    const tracks = state['features/base/tracks'];
+    const audioTrack = getLocalAudioTrack(tracks);
+    const videoTrack = getLocalVideoTrack(tracks);
+    const newDuration = { ...localTracksDuration };
+
+    if (!audioTrack || audioTrack.muted || !conference) {
+        newDuration.audio = {
+            startedTime: -1,
+            value: audio.value + (audio.startedTime === -1 ? 0 : now - audio.startedTime)
+        };
+    } else if (audio.startedTime === -1) {
+        newDuration.audio.startedTime = now;
+    }
+
+    if (!videoTrack || videoTrack.muted || !conference) {
+        newDuration.video = {
+            camera: {
+                startedTime: -1,
+                value: camera.value + (camera.startedTime === -1 ? 0 : now - camera.startedTime)
+            },
+            desktop: {
+                startedTime: -1,
+                value: desktop.value + (desktop.startedTime === -1 ? 0 : now - desktop.startedTime)
+            }
+        };
+    } else {
+        const { videoType } = videoTrack;
+
+        if (video[videoType].startedTime === -1) {
+            newDuration.video[videoType].startedTime = now;
+        }
+    }
+
+    return {
+        ...localTracksDuration,
+        ...newDuration
+    };
+}
 
 /**
  * Middleware which intercepts config actions to handle evaluating analytics
@@ -12,25 +78,81 @@ import { initAnalytics, resetAnalytics } from './functions';
  * @returns {Function}
  */
 MiddlewareRegistry.register(store => next => action => {
-    switch (action.type) {
-    case SET_CONFIG: {
+    if (action.type === SET_CONFIG) {
         if (navigator.product === 'ReactNative') {
             // Reseting the analytics is currently not needed for web because
             // the user will be redirected to another page and new instance of
             // Analytics will be created and initialized.
             resetAnalytics();
         }
+    }
 
+    const result = next(action);
+
+    switch (action.type) {
+    case CONFERENCE_JOINED: {
+        const { dispatch, getState } = store;
+        const state = getState();
+
+        dispatch({
+            type: UPDATE_LOCAL_TRACKS_DURATION,
+            localTracksDuration: {
+                ...calculateLocalTrackDuration(state),
+                conference: {
+                    startedTime: Date.now(),
+                    value: 0
+                }
+            }
+        });
+        break;
+    }
+
+    case CONFERENCE_WILL_LEAVE: {
+        const { dispatch, getState } = store;
+        const state = getState();
+        const { localTracksDuration } = state['features/analytics'];
+        const newLocalTracksDuration = {
+            ...calculateLocalTrackDuration(state),
+            conference: {
+                startedTime: -1,
+                value: Date.now() - localTracksDuration.conference.startedTime
+            }
+        };
+
+        sendAnalytics(createLocalTracksDurationEvent(newLocalTracksDuration));
+
+        dispatch({
+            type: UPDATE_LOCAL_TRACKS_DURATION,
+            localTracksDuration: newLocalTracksDuration
+        });
         break;
     }
     case SET_ROOM: {
-        const result = next(action);
-
         initAnalytics(store);
+        break;
+    }
+    case TRACK_ADDED:
+    case TRACK_REMOVED:
+    case TRACK_UPDATED: {
+        const { dispatch, getState } = store;
+        const state = getState();
+        const { localTracksDuration } = state['features/analytics'];
+
+        if (localTracksDuration.conference.startedTime === -1) {
+            // We don't want to track the media duration if the conference is not joined yet because otherwise we won't
+            // be able to compare them with the conference duration (from conference join to conference will leave).
+            break;
+        }
+        dispatch({
+            type: UPDATE_LOCAL_TRACKS_DURATION,
+            localTracksDuration: {
+                ...localTracksDuration,
+                ...calculateLocalTrackDuration(state)
+            }
+        });
+        break;
+    }
+    }
 
     return result;
-    }
-    }
-
-    return next(action);
 });

react/features/analytics/reducer.js

@@ -0,0 +1,51 @@
+// @flow
+
+import { ReducerRegistry } from '../base/redux';
+
+import { UPDATE_LOCAL_TRACKS_DURATION } from './actionTypes';
+
+/**
+ * Initial state.
+ */
+const DEFAULT_STATE = {
+    localTracksDuration: {
+        audio: {
+            startedTime: -1,
+            value: 0
+        },
+        video: {
+            camera: {
+                startedTime: -1,
+                value: 0
+            },
+            desktop: {
+                startedTime: -1,
+                value: 0
+            }
+        },
+        conference: {
+            startedTime: -1,
+            value: 0
+        }
+    }
+};
+
+/**
+ * Listen for actions which changes the state of the analytics feature.
+ *
+ * @param {Object} state - The Redux state of the feature features/analytics.
+ * @param {Object} action - Action object.
+ * @param {string} action.type - Type of action.
+ * @returns {Object}
+ */
+ReducerRegistry.register('features/analytics', (state = DEFAULT_STATE, action) => {
+    switch (action.type) {
+    case UPDATE_LOCAL_TRACKS_DURATION:
+        return {
+            ...state,
+            localTracksDuration: action.localTracksDuration
+        };
+    default:
+        return state;
+    }
+});