Initial

src/Memory/Handlers/LoggingHandler.php

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+<?php
+
+declare(strict_types=1);
+
+namespace SqrtSpace\SpaceTime\Memory\Handlers;
+
+use SqrtSpace\SpaceTime\Memory\MemoryPressureHandler;
+use SqrtSpace\SpaceTime\Memory\MemoryPressureLevel;
+use Psr\Log\LoggerInterface;
+use Psr\Log\NullLogger;
+
+/**
+ * Log memory pressure events
+ */
+class LoggingHandler implements MemoryPressureHandler
+{
+    private LoggerInterface $logger;
+    private MemoryPressureLevel $minLevel;
+    
+    public function __construct(
+        ?LoggerInterface $logger = null,
+        MemoryPressureLevel $minLevel = MemoryPressureLevel::MEDIUM
+    ) {
+        $this->logger = $logger ?? new NullLogger();
+        $this->minLevel = $minLevel;
+    }
+    
+    public function shouldHandle(MemoryPressureLevel $level): bool
+    {
+        return $level->isHigherThan($this->minLevel) || $level === $this->minLevel;
+    }
+    
+    public function handle(MemoryPressureLevel $level, array $memoryInfo): void
+    {
+        $context = [
+            'level' => $level->value,
+            'usage' => $this->formatBytes($memoryInfo['usage']),
+            'limit' => $this->formatBytes($memoryInfo['limit']),
+            'percentage' => round($memoryInfo['percentage'], 2),
+            'available' => $this->formatBytes($memoryInfo['available']),
+        ];
+        
+        match ($level) {
+            MemoryPressureLevel::CRITICAL => $this->logger->critical('Critical memory pressure detected', $context),
+            MemoryPressureLevel::HIGH => $this->logger->error('High memory pressure detected', $context),
+            MemoryPressureLevel::MEDIUM => $this->logger->warning('Medium memory pressure detected', $context),
+            MemoryPressureLevel::LOW => $this->logger->info('Low memory pressure detected', $context),
+            default => $this->logger->debug('Memory pressure check', $context),
+        };
+    }
+    
+    private function formatBytes(float $bytes): string
+    {
+        $units = ['B', 'KB', 'MB', 'GB'];
+        $factor = floor((strlen((string)(int)$bytes) - 1) / 3);
+        
+        return sprintf("%.2f %s", $bytes / pow(1024, $factor), $units[$factor]);
+    }
+}