From 4673b4c012b2a13b2ac91e4bb6cfea37fa283358 Mon Sep 17 00:00:00 2001
From: Kevin Aleman <kevin.aleman@rocket.chat>
Date: Mon, 28 Feb 2022 11:56:30 -0600
Subject: [PATCH] Refresh server connection when MI server settings change

---
 app/lib/server/startup/settings.ts                  |  4 ++--
 app/voip/server/startup.ts                          | 13 +++++++++++++
 server/sdk/types/IVoipService.ts                    |  1 +
 .../voip/connector/asterisk/CommandHandler.ts       |  5 +++++
 server/services/voip/service.ts                     | 10 ++++++++--
 5 files changed, 29 insertions(+), 4 deletions(-)

diff --git a/app/lib/server/startup/settings.ts b/app/lib/server/startup/settings.ts
index 51cd43e91a10..7c1c2f670d8a 100644
--- a/app/lib/server/startup/settings.ts
+++ b/app/lib/server/startup/settings.ts
@@ -3160,7 +3160,7 @@ settingsRegistry.addGroup('Call_Center', function () {
 		});
 		this.section('Server_Configuration', function () {
 			this.add('VoIP_Server_Host', '', {
-				type: 'password',
+				type: 'string',
 				public: true,
 				enableQuery: {
 					_id: 'VoIP_Enabled',
@@ -3176,7 +3176,7 @@ settingsRegistry.addGroup('Call_Center', function () {
 				},
 			});
 			this.add('VoIP_Server_Name', '', {
-				type: 'int',
+				type: 'string',
 				public: true,
 				enableQuery: {
 					_id: 'VoIP_Enabled',
diff --git a/app/voip/server/startup.ts b/app/voip/server/startup.ts
index 1220b5bb2ee2..06703d944d77 100644
--- a/app/voip/server/startup.ts
+++ b/app/voip/server/startup.ts
@@ -1,6 +1,19 @@
+import debounce from 'lodash.debounce';
+
 import { settings } from '../../settings/server';
 import { Voip } from '../../../server/sdk';
 
+const debouncedRefresh = debounce(Voip.refresh, 1000);
+
 settings.watch('VoIP_Enabled', (value: boolean) => {
 	return value ? Voip.init() : Voip.stop();
 });
+
+settings.changeMultiple(
+	['VoIP_Management_Server_Host', 'VoIP_Management_Server_Port', 'VoIP_Management_Server_Username', 'VoIP_Management_Server_Password'],
+	(_values) => {
+		// Here, if 4 settings are changed at once, we're getting 4 diff callbacks. The good part is that all callbacks are fired almost instantly
+		// So to avoid stopping/starting voip too often, we debounce the call and restart 1 second after the last setting has reached us.
+		return debouncedRefresh();
+	},
+);
diff --git a/server/sdk/types/IVoipService.ts b/server/sdk/types/IVoipService.ts
index 60997559f8cf..78f42792bb01 100644
--- a/server/sdk/types/IVoipService.ts
+++ b/server/sdk/types/IVoipService.ts
@@ -19,4 +19,5 @@ export interface IVoipService {
 	cachedQueueDetails(): () => Promise<{ name: string; members: string[] }[]>;
 	init(): Promise<void>;
 	stop(): Promise<void>;
+	refresh(): Promise<void>;
 }
diff --git a/server/services/voip/connector/asterisk/CommandHandler.ts b/server/services/voip/connector/asterisk/CommandHandler.ts
index 0dc3175f3cf5..b74e7ceee2fa 100644
--- a/server/services/voip/connector/asterisk/CommandHandler.ts
+++ b/server/services/voip/connector/asterisk/CommandHandler.ts
@@ -151,6 +151,11 @@ export class CommandHandler {
 	}
 
 	stop(): void {
+		if (!this.continuousMonitor) {
+			// service is already stopped or was never initialized
+			return;
+		}
+
 		this.continuousMonitor.cleanMonitor();
 		for (const connection of this.connections.values()) {
 			connection.closeConnection();
diff --git a/server/services/voip/service.ts b/server/services/voip/service.ts
index 3e780d61df30..127f3d66d734 100644
--- a/server/services/voip/service.ts
+++ b/server/services/voip/service.ts
@@ -51,7 +51,7 @@ export class VoipService extends ServiceClassInternal implements IVoipService {
 			await this.commandHandler.initConnection(CommandType.AMI);
 			this.logger.info('VoIP service started');
 		} catch (err) {
-			this.logger.error('Error initializing VOIP service', err);
+			this.logger.error({ msg: 'Error initializing VOIP service', err });
 		}
 	}
 
@@ -61,10 +61,16 @@ export class VoipService extends ServiceClassInternal implements IVoipService {
 			this.commandHandler.stop();
 			this.logger.info('VoIP service stopped');
 		} catch (err) {
-			this.logger.error('Error stopping VoIP service', err);
+			this.logger.error({ msg: 'Error stopping VoIP service', err });
 		}
 	}
 
+	async refresh(): Promise<void> {
+		this.logger.info('Restarting VoIP service due to settings changes');
+		await this.stop();
+		await this.init();
+	}
+
 	getServerConfigData(type: ServerType): IVoipCallServerConfig | IVoipManagementServerConfig {
 		return getServerConfigDataFromSettings(type);
 	}