feat(openmetrics): Add basic call metrics

appinfo/info.xml

@@ -167,4 +167,10 @@
 			<plugin type="collaborator-search" share-type="SHARE_TYPE_ROOM">OCA\Talk\Collaboration\Collaborators\RoomPlugin</plugin>
 		</plugins>
 	</collaboration>
+
+	<openmetrics>
+		<exporter>OCA\Talk\OpenMetrics\ActiveCalls</exporter>
+		<exporter>OCA\Talk\OpenMetrics\InCallSessions</exporter>
+	</openmetrics>
+
 </info>

lib/Command/Monitor/HasActiveCalls.php

@@ -9,15 +9,14 @@
 namespace OCA\Talk\Command\Monitor;
 
 use OC\Core\Command\Base;
-use OCA\Talk\Participant;
-use OCP\IDBConnection;
+use OCA\Talk\Service\MetricsService;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 
 class HasActiveCalls extends Base {
 
 	public function __construct(
-		protected IDBConnection $connection,
+		protected MetricsService $metricsService,
 	) {
 		parent::__construct();
 	}
@@ -33,15 +32,7 @@ protected function configure(): void {
 	}
 
 	protected function execute(InputInterface $input, OutputInterface $output): int {
-		$query = $this->connection->getQueryBuilder();
-
-		$query->select($query->func()->count('*', 'num_calls'))
-			->from('talk_rooms')
-			->where($query->expr()->isNotNull('active_since'));
-
-		$result = $query->executeQuery();
-		$numCalls = (int)$result->fetchColumn();
-		$result->closeCursor();
+		$numCalls = $this->metricsService->getNumberOfActiveCalls();
 
 		if ($numCalls === 0) {
 			if ($input->getOption('output') === 'plain') {
@@ -53,21 +44,13 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 			return 0;
 		}
 
-		$query = $this->connection->getQueryBuilder();
-		$query->select($query->func()->count('*', 'num_participants'))
-			->from('talk_sessions')
-			->where($query->expr()->gt('in_call', $query->createNamedParameter(Participant::FLAG_DISCONNECTED)))
-			->andWhere($query->expr()->gt('last_ping', $query->createNamedParameter(time() - 60)));
-
-		$result = $query->executeQuery();
-		$numParticipants = (int)$result->fetchColumn();
-		$result->closeCursor();
-
+		$numSessions = $this->metricsService->getNumberOfSessionsInCalls();
 
+		// We keep "participants" here, to not break scripting done with that command
 		if ($input->getOption('output') === 'plain') {
-			$output->writeln(sprintf('<error>There are currently %1$d calls in progress with %2$d participants</error>', $numCalls, $numParticipants));
+			$output->writeln(sprintf('<error>There are currently %1$d calls in progress with %2$d participants</error>', $numCalls, $numSessions));
 		} else {
-			$data = ['calls' => $numCalls, 'participants' => $numParticipants];
+			$data = ['calls' => $numCalls, 'participants' => $numSessions];
 			$this->writeArrayInOutputFormat($input, $output, $data);
 		}
 		return 1;

lib/OpenMetrics/ActiveCalls.php

@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Talk\OpenMetrics;
+
+use Generator;
+use OCA\Talk\Service\MetricsService;
+use OCP\OpenMetrics\IMetricFamily;
+use OCP\OpenMetrics\Metric;
+use OCP\OpenMetrics\MetricType;
+use Override;
+
+class ActiveCalls implements IMetricFamily {
+	public function __construct(
+		private MetricsService $metricsService,
+	) {
+	}
+
+	#[Override]
+	public function name(): string {
+		return 'talk_active_calls';
+	}
+
+	#[Override]
+	public function type(): MetricType {
+		return MetricType::gauge;
+	}
+
+	#[Override]
+	public function unit(): string {
+		return 'calls';
+	}
+
+	#[Override]
+	public function help(): string {
+		return 'Number of active calls in talk';
+	}
+
+	#[Override]
+	public function metrics(): Generator {
+		yield new Metric($this->metricsService->getNumberOfActiveCalls(), [], time());
+	}
+}

lib/OpenMetrics/InCallSessions.php

@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Talk\OpenMetrics;
+
+use Generator;
+use OCA\Talk\Service\MetricsService;
+use OCP\OpenMetrics\IMetricFamily;
+use OCP\OpenMetrics\Metric;
+use OCP\OpenMetrics\MetricType;
+use Override;
+
+class InCallSessions implements IMetricFamily {
+	public function __construct(
+		private MetricsService $metricsService,
+	) {
+	}
+
+	#[Override]
+	public function name(): string {
+		return 'talk_in_call_sessions';
+	}
+
+	#[Override]
+	public function type(): MetricType {
+		return MetricType::gauge;
+	}
+
+	#[Override]
+	public function unit(): string {
+		return 'sessions';
+	}
+
+	#[Override]
+	public function help(): string {
+		return 'Number of sessions in calls in talk';
+	}
+
+	#[Override]
+	public function metrics(): Generator {
+		yield new Metric($this->metricsService->getNumberOfSessionsInCalls(), [], time());
+	}
+}

lib/Service/MetricsService.php

@@ -0,0 +1,52 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Talk\Service;
+
+use OCA\Talk\Participant;
+use OCP\IDBConnection;
+use Psr\Log\LoggerInterface;
+
+class MetricsService {
+
+	public function __construct(
+		protected LoggerInterface $logger,
+		protected IDBConnection $connection,
+	) {
+	}
+
+	public function getNumberOfActiveCalls(): int {
+		$query = $this->connection->getQueryBuilder();
+
+		$query->select($query->func()->count('*', 'num_calls'))
+			->from('talk_rooms')
+			->where($query->expr()->isNotNull('active_since'));
+
+		$result = $query->executeQuery();
+		$numCalls = (int)$result->fetchOne();
+		$result->closeCursor();
+
+		return $numCalls;
+	}
+
+	public function getNumberOfSessionsInCalls(): int {
+		$query = $this->connection->getQueryBuilder();
+		$query->select($query->func()->count('*', 'num_sessions'))
+			->from('talk_sessions')
+			->where($query->expr()->gt('in_call', $query->createNamedParameter(Participant::FLAG_DISCONNECTED)))
+			->andWhere($query->expr()->gt('last_ping', $query->createNamedParameter(time() - 60)));
+
+		$result = $query->executeQuery();
+		$numSessions = (int)$result->fetchColumn();
+		$result->closeCursor();
+
+		return $numSessions;
+	}
+
+}