Fix default handler and channel per processor

.gitattributes

@@ -1,8 +1,6 @@
 /.github export-ignore
 /tests export-ignore
 /.php-cs-fixer.php export-ignore
-/.pmd-ruleset.xml export-ignore
 /.gitattributes export-ignore
 /.gitignore export-ignore
 /phpunit.xml.dist export-ignore
-/psalm.xml export-ignore

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.0.1]
+
+### Fixed
+
+- Per-processor `channels`/`handlers` routing no longer inherits global defaults when the processor defines its own routing. Previously, a processor with only `handlers` configured would also inherit global `channels`, causing an "cannot target both channels and handlers" error.
+
 ## [3.0.0]
 
 ### Breaking Changes

src/DependencyInjection/ProcessorLoader.php

@@ -205,8 +205,16 @@ private function resolveUserProvider(array $processorConfig): Definition|Referen
      */
     private function configureMonologProcessor(array $config, array $configOverride, Definition $processor, int $priority = 0): void
     {
-        $channels = !empty($configOverride['channels']) ? $configOverride['channels'] : $config['monolog']['channels'];
-        $handlers = !empty($configOverride['handlers']) ? $configOverride['handlers'] : $config['monolog']['handlers'];
+        $processorHasChannels = !empty($configOverride['channels']);
+        $processorHasHandlers = !empty($configOverride['handlers']);
+
+        if ($processorHasChannels || $processorHasHandlers) {
+            $channels = $configOverride['channels'];
+            $handlers = $configOverride['handlers'];
+        } else {
+            $channels = $config['monolog']['channels'];
+            $handlers = $config['monolog']['handlers'];
+        }
 
         if (!empty($channels) && !empty($handlers)) {
             throw new InvalidConfigurationException('ecs_logging: a processor cannot target both channels and handlers simultaneously. Configure one or the other.');