fix(hpb): Deprecate multiple HPBs and fake-clustering

Signed-off-by: Joas Schilling <coding@schilljs.com>

lib/AppInfo/Application.php

@@ -109,7 +109,7 @@
 use OCA\Talk\Settings\Personal;
 use OCA\Talk\SetupCheck\BackgroundBlurLoading;
 use OCA\Talk\SetupCheck\FederationLockCache;
-use OCA\Talk\SetupCheck\RecommendCache;
+use OCA\Talk\SetupCheck\HighPerformanceBackend;
 use OCA\Talk\SetupCheck\RecordingBackend;
 use OCA\Talk\SetupCheck\SIPConfiguration;
 use OCA\Talk\Share\Listener as ShareListener;
@@ -338,7 +338,7 @@ public function register(IRegistrationContext $context): void {
 
 		$context->registerTeamResourceProvider(TalkTeamResourceProvider::class);
 
-		$context->registerSetupCheck(RecommendCache::class);
+		$context->registerSetupCheck(HighPerformanceBackend::class);
 		$context->registerSetupCheck(FederationLockCache::class);
 		$context->registerSetupCheck(RecordingBackend::class);
 		$context->registerSetupCheck(SIPConfiguration::class);

lib/SetupCheck/HighPerformanceBackend.php

@@ -0,0 +1,62 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Talk\SetupCheck;
+
+use OCA\Talk\Config;
+use OCP\ICacheFactory;
+use OCP\IL10N;
+use OCP\IURLGenerator;
+use OCP\SetupCheck\ISetupCheck;
+use OCP\SetupCheck\SetupResult;
+
+class HighPerformanceBackend implements ISetupCheck {
+	public function __construct(
+		readonly protected Config $talkConfig,
+		readonly protected ICacheFactory $cacheFactory,
+		readonly protected IURLGenerator $urlGenerator,
+		readonly protected IL10N $l,
+	) {
+	}
+
+	public function getCategory(): string {
+		return 'talk';
+	}
+
+	public function getName(): string {
+		return $this->l->t('High-performance backend');
+	}
+
+	public function run(): SetupResult {
+		if ($this->talkConfig->getSignalingMode() === Config::SIGNALING_INTERNAL) {
+			return SetupResult::success();
+		}
+
+		if ($this->talkConfig->getSignalingMode() === Config::SIGNALING_CLUSTER_CONVERSATION) {
+			return SetupResult::warning(
+				$this->l->t('Running the High-performance backend "conversation_cluster" mode is deprecated and will no longer be supported in the upcoming version. The High-performance backend supports real clustering nowadays which should be used instead.'),
+				'https://portal.nextcloud.com/article/Partner-Products/Talk-High-Performance-Backend/Nextcloud-Talk-High-Performance-Back-End-Requirements#content-clustering-and-use-of-multiple-hpbs',
+			);
+		}
+
+		if (count($this->talkConfig->getSignalingServers()) > 1) {
+			return SetupResult::warning(
+				$this->l->t('Defining multiple High-performance backends is deprecated and will no longer be supported in the upcoming version. Instead a load-balancer should be set up together with clustered signaling servers and configured in the Talk settings.'),
+				'https://portal.nextcloud.com/article/Partner-Products/Talk-High-Performance-Backend/Nextcloud-Talk-High-Performance-Back-End-Requirements#content-clustering-and-use-of-multiple-hpbs',
+			);
+		}
+
+		if ($this->cacheFactory->isAvailable()) {
+			return SetupResult::success();
+		}
+		return SetupResult::warning(
+			$this->l->t('It is highly recommended to configure a memory cache when running Nextcloud Talk with a High-performance backend.'),
+			$this->urlGenerator->linkToDocs('admin-cache'),
+		);
+	}
+}