Logging: Fixup logger for psr/log 3.x

src/Configuration.php

@@ -2,7 +2,7 @@
 
 namespace Hypernode\DeployConfiguration;
 
-use Hypernode\DeployConfiguration\Logging\SimpleLogger;
+use Hypernode\DeployConfiguration\Logging\LoggingFactory;
 use Psr\Log\LoggerInterface;
 use Psr\Log\LogLevel;
 
@@ -157,7 +157,7 @@ class Configuration
 
     public function __construct()
     {
-        $this->logger = new SimpleLogger(LogLevel::INFO);
+        $this->logger = LoggingFactory::create(LogLevel::INFO);
         $this->setDefaultComposerOptions();
     }
 

src/Logging/LegacyLogger.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace Hypernode\DeployConfiguration\Logging;
+
+use Psr\Log\AbstractLogger;
+use Psr\Log\LogLevel;
+
+/**
+ * Simple logger implementation using printf
+ * This logger was written for psr/log < 3.0.0.
+ */
+class LegacyLogger extends AbstractLogger
+{
+    private const LEVEL_MAPPING = [
+        LogLevel::DEBUG => 0,
+        LogLevel::INFO => 1,
+        LogLevel::NOTICE => 2,
+        LogLevel::WARNING => 3,
+        LogLevel::ERROR => 4,
+        LogLevel::CRITICAL => 5,
+        LogLevel::ALERT => 6,
+        LogLevel::EMERGENCY => 7
+    ];
+
+    /**
+     * @var int
+     */
+    private $mappedLevel;
+
+    public function __construct(string $level)
+    {
+        $this->mappedLevel = self::LEVEL_MAPPING[$level] ?? 1;
+    }
+
+    /**
+     * @param mixed $level 
+     * @param string|\Stringable $message 
+     * @param mixed[] $context 
+     * @return void 
+     */
+    public function log($level, $message, array $context = array())
+    {
+        if ($this->mapLevelToNumber($level) ?? 1 >= $this->mappedLevel) {
+            printf("%s (%s)\n", $message, json_encode($context));
+        }
+    }
+
+    private static function mapLevelToNumber(string $level): int
+    {
+        return self::LEVEL_MAPPING[$level] ?? 1;
+    }
+}

src/Logging/LoggingFactory.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Hypernode\DeployConfiguration\Logging;
+
+use Composer\InstalledVersions;
+use Psr\Log\LoggerInterface;
+
+class LoggingFactory
+{
+    public static function create(string $level): LoggerInterface
+    {
+        if (version_compare(InstalledVersions::getVersion('psr/log'), '3.0.0', '<')) {
+            return new LegacyLogger($level);
+        }
+        return new SimpleLogger($level);
+    }
+}

src/Logging/SimpleLogger.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Hypernode\DeployConfiguration\Logging;
 
 use Psr\Log\AbstractLogger;
@@ -32,14 +34,17 @@ public function __construct(string $level)
     }
 
     /**
-     * @param mixed $level 
-     * @param string|\Stringable $message 
-     * @param mixed[] $context 
-     * @return void 
+     * Logs with an arbitrary level.
+     *
+     * @param mixed   $level
+     * @param string|\Stringable $message
+     * @param mixed[] $context
+     *
+     * @return void
      */
-    public function log($level, $message, array $context = array())
+    public function log($level, $message, array $context = []): void
     {
-        if ($this->mapLevelToNumber($level) ?? 1 >= $this->mappedLevel) {
+        if ($this->mapLevelToNumber($level) >= $this->mappedLevel) {
             printf("%s (%s)\n", $message, json_encode($context));
         }
     }