From 7ea99d5d449ba0cd0ac5de4c3028d77ed167d8a4 Mon Sep 17 00:00:00 2001
From: Christoph Wurst <christoph@winzerhof-wurst.at>
Date: Fri, 3 Sep 2021 14:13:49 +0200
Subject: [PATCH] Debug log what happens during reminders processing

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>
---
 .../lib/CalDAV/Reminder/ReminderService.php   | 41 +++++++++++++------
 1 file changed, 28 insertions(+), 13 deletions(-)

diff --git a/apps/dav/lib/CalDAV/Reminder/ReminderService.php b/apps/dav/lib/CalDAV/Reminder/ReminderService.php
index b33bc8a175a72..2a06546905285 100644
--- a/apps/dav/lib/CalDAV/Reminder/ReminderService.php
+++ b/apps/dav/lib/CalDAV/Reminder/ReminderService.php
@@ -38,6 +38,7 @@
 use OCP\IGroupManager;
 use OCP\IUser;
 use OCP\IUserManager;
+use Psr\Log\LoggerInterface;
 use Sabre\VObject;
 use Sabre\VObject\Component\VAlarm;
 use Sabre\VObject\Component\VEvent;
@@ -46,6 +47,7 @@
 use Sabre\VObject\Recur\EventIterator;
 use Sabre\VObject\Recur\MaxInstancesExceededException;
 use Sabre\VObject\Recur\NoInstancesException;
+use function count;
 use function strcasecmp;
 
 class ReminderService {
@@ -71,6 +73,9 @@ class ReminderService {
 	/** @var IConfig */
 	private $config;
 
+	/** @var LoggerInterface */
+	private $logger;
+
 	public const REMINDER_TYPE_EMAIL = 'EMAIL';
 	public const REMINDER_TYPE_DISPLAY = 'DISPLAY';
 	public const REMINDER_TYPE_AUDIO = 'AUDIO';
@@ -86,24 +91,14 @@ class ReminderService {
 		self::REMINDER_TYPE_AUDIO
 	];
 
-	/**
-	 * ReminderService constructor.
-	 *
-	 * @param Backend $backend
-	 * @param NotificationProviderManager $notificationProviderManager
-	 * @param IUserManager $userManager
-	 * @param IGroupManager $groupManager
-	 * @param CalDavBackend $caldavBackend
-	 * @param ITimeFactory $timeFactory
-	 * @param IConfig $config
-	 */
 	public function __construct(Backend $backend,
 								NotificationProviderManager $notificationProviderManager,
 								IUserManager $userManager,
 								IGroupManager $groupManager,
 								CalDavBackend $caldavBackend,
 								ITimeFactory $timeFactory,
-								IConfig $config) {
+								IConfig $config,
+								LoggerInterface $logger) {
 		$this->backend = $backend;
 		$this->notificationProviderManager = $notificationProviderManager;
 		$this->userManager = $userManager;
@@ -111,6 +106,7 @@ public function __construct(Backend $backend,
 		$this->caldavBackend = $caldavBackend;
 		$this->timeFactory = $timeFactory;
 		$this->config = $config;
+		$this->logger = $logger;
 	}
 
 	/**
@@ -119,8 +115,11 @@ public function __construct(Backend $backend,
 	 * @throws NotificationProvider\ProviderNotAvailableException
 	 * @throws NotificationTypeDoesNotExistException
 	 */
-	public function processReminders():void {
+	public function processReminders() :void {
 		$reminders = $this->backend->getRemindersToProcess();
+		$this->logger->debug('{numReminders} reminders to process', [
+			'numReminders' => count($reminders),
+		]);
 
 		foreach ($reminders as $reminder) {
 			$calendarData = is_resource($reminder['calendardata'])
@@ -133,22 +132,34 @@ public function processReminders():void {
 
 			$vcalendar = $this->parseCalendarData($calendarData);
 			if (!$vcalendar) {
+				$this->logger->debug('Reminder {id} does not belong to a valid calendar', [
+					'id' => $reminder['id'],
+				]);
 				$this->backend->removeReminder($reminder['id']);
 				continue;
 			}
 
 			$vevent = $this->getVEventByRecurrenceId($vcalendar, $reminder['recurrence_id'], $reminder['is_recurrence_exception']);
 			if (!$vevent) {
+				$this->logger->debug('Reminder {id} does not belong to a valid event', [
+					'id' => $reminder['id'],
+				]);
 				$this->backend->removeReminder($reminder['id']);
 				continue;
 			}
 
 			if ($this->wasEventCancelled($vevent)) {
+				$this->logger->debug('Reminder {id} belongs to a cancelled event', [
+					'id' => $reminder['id'],
+				]);
 				$this->deleteOrProcessNext($reminder, $vevent);
 				continue;
 			}
 
 			if (!$this->notificationProviderManager->hasProvider($reminder['type'])) {
+				$this->logger->debug('Reminder {id} does not belong to a valid notification provider', [
+					'id' => $reminder['id'],
+				]);
 				$this->deleteOrProcessNext($reminder, $vevent);
 				continue;
 			}
@@ -164,6 +175,10 @@ public function processReminders():void {
 				$users[] = $user;
 			}
 
+			$this->logger->debug('Reminder {id} will be sent to {numUsers} users', [
+				'id' => $reminder['id'],
+				'numUsers' => count($users),
+			]);
 			$notificationProvider = $this->notificationProviderManager->getProvider($reminder['type']);
 			$notificationProvider->send($vevent, $reminder['displayname'], $users);