add support for recording conference to a file

lib/tasks/conference.js

@@ -5,11 +5,14 @@ const {TaskName, TaskPreconditions, BONG_TONE} = require('../utils/constants');
 const normalizeJambones = require('../utils/normalize-jambones');
 const makeTask = require('./make_task');
 const bent = require('bent');
+const fs = require('fs');
+const fsPromises = require('fs/promises');
 const assert = require('assert');
 const WAIT = 'wait';
 const JOIN = 'join';
 const START = 'start';
 
+
 function confNoMatch(str) {
   return str.match(/^No active conferences/) || str.match(/Conference.*not found/);
 }
@@ -49,7 +52,7 @@ class Conference extends Task {
       'beep', 'startConferenceOnEnter', 'endConferenceOnExit', 'joinMuted',
       'maxParticipants', 'waitHook', 'statusHook', 'endHook', 'enterHook'
     ].forEach((attr) => this[attr] = this.data[attr]);
-
+    this.record = this.data.record || {};
     this.statusEvents = [];
     if (this.statusHook) {
       ['start', 'end', 'join', 'leave', 'start-talking', 'stop-talking'].forEach((e) => {
@@ -68,6 +71,9 @@ class Conference extends Task {
 
   get name() { return TaskName.Conference; }
 
+  get shouldRecord() { return this.record.path; }
+  get isRecording() { return this.recordingInProgress; }
+
   async exec(cs, ep) {
     await super.exec(cs);
     this.ep = ep;
@@ -100,7 +106,7 @@ class Conference extends Task {
       this.logger.info(err, `TaskConference:exec - error in conference ${this.confName}`);
     }
   }
-
+ 
   async kill(cs) {
     super.kill(cs);
     this.logger.info(`Conference:kill ${this.confName}`);
@@ -346,6 +352,16 @@ class Conference extends Task {
       if (response.body && /\d+/.test(response.body)) this.participantCount = parseInt(response.body);
       this._notifyConferenceEvent(cs, 'join');
 
+      // start recording if requested and we just started the conference
+      if (startConf && this.shouldRecord) {
+        this.logger.info(`recording conference to ${this.record.path}`);
+        try {
+          await this.ep.api(`conference ${this.confName} record ${this.record.path}`);
+        } catch (err) {
+          this.logger.info({err}, 'Conference:_joinConference - failed to start recording');
+        }
+      }
+
       // listen for conference events
       this.ep.filter('Conference-Unique-ID', this.confUuid);
       this.ep.conn.on('esl::event::CUSTOM::*', this.__onConferenceEvent.bind(this, cs)) ;