perf(logging): Return early when log level does not match before serializing an exception

Signed-off-by: Julius Härtl <jus@bitgrid.net>

lib/private/Log.php

@@ -312,6 +312,11 @@ class Log implements ILogger, IDataLogger {
 		$app = $context['app'] ?? 'no app in context';
 		$level = $context['level'] ?? ILogger::ERROR;
 
+		$minLevel = $this->getLogLevel($context);
+		if ($level < $minLevel && ($this->crashReporters === null || !$this->crashReporters->hasReporters())) {
+			return;
+		}
+
 		// if an error is raised before the autoloader is properly setup, we can't serialize exceptions
 		try {
 			$serializer = $this->getSerializer();
@@ -325,7 +330,6 @@ class Log implements ILogger, IDataLogger {
 		$data = array_merge($serializer->serializeException($exception), $data);
 		$data = $this->interpolateMessage($data, $context['message'] ?? '--', 'CustomMessage');
 
-		$minLevel = $this->getLogLevel($context);
 
 		array_walk($context, [$this->normalizer, 'format']);
 

lib/private/Support/CrashReport/Registry.php

@@ -147,4 +147,8 @@ class Registry implements IRegistry {
 			}
 		}
 	}
+
+	public function hasReporters(): bool {
+		return !empty($this->lazyReporters) || !empty($this->reporters);
+	}
 }

lib/public/Support/CrashReport/IRegistry.php

@@ -81,4 +81,13 @@ interface IRegistry {
 	 * @since 17.0.0
 	 */
 	public function delegateMessage(string $message, array $context = []): void;
+
+	/**
+	 * Check if any reporter has been registered to delegate to
+	 *
+	 * @return bool
+	 * @deprecated use internally only
+	 * @since 26.0.0
+	 */
+	public function hasReporters(): bool;
 }