feat : add DockerService for container status and stats

src/Service/DockerService.php

@@ -0,0 +1,100 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+use Symfony\Component\Process\Process;
+
+final class DockerService
+{
+    /**
+     * @return array{status: string, image: string, version: string, startedAt: string}
+     */
+    public function getContainerStatus(string $containerName): array
+    {
+        $process = new Process([
+            'docker', 'inspect',
+            '--format', '{{.State.Status}}||{{.Config.Image}}||{{.State.StartedAt}}',
+            $containerName,
+        ]);
+        $process->setTimeout(10);
+        $process->run();
+
+        if (!$process->isSuccessful()) {
+            return [
+                'status' => 'not_found',
+                'image' => '',
+                'version' => '',
+                'startedAt' => '',
+            ];
+        }
+
+        $parts = explode('||', trim($process->getOutput()));
+
+        if (\count($parts) < 3) {
+            return [
+                'status' => 'not_found',
+                'image' => '',
+                'version' => '',
+                'startedAt' => '',
+            ];
+        }
+
+        $image = $parts[1];
+        $version = 'latest';
+        if (str_contains($image, ':')) {
+            $version = substr($image, strrpos($image, ':') + 1);
+        }
+
+        return [
+            'status' => $parts[0],
+            'image' => $image,
+            'version' => $version,
+            'startedAt' => $parts[2],
+        ];
+    }
+
+    /**
+     * @return array{cpuPercent: float, memoryUsage: string, memoryLimit: string, memoryPercent: float}
+     */
+    public function getContainerStats(string $containerName): array
+    {
+        $process = new Process([
+            'docker', 'stats', '--no-stream',
+            '--format', '{{.CPUPerc}}||{{.MemUsage}}||{{.MemPerc}}',
+            $containerName,
+        ]);
+        $process->setTimeout(10);
+        $process->run();
+
+        if (!$process->isSuccessful()) {
+            return [
+                'cpuPercent' => 0.0,
+                'memoryUsage' => '',
+                'memoryLimit' => '',
+                'memoryPercent' => 0.0,
+            ];
+        }
+
+        $parts = explode('||', trim($process->getOutput()));
+
+        if (\count($parts) < 3) {
+            return [
+                'cpuPercent' => 0.0,
+                'memoryUsage' => '',
+                'memoryLimit' => '',
+                'memoryPercent' => 0.0,
+            ];
+        }
+
+        $memParts = explode(' / ', $parts[1]);
+
+        return [
+            'cpuPercent' => (float) rtrim($parts[0], '%'),
+            'memoryUsage' => $memParts[0] ?? '',
+            'memoryLimit' => $memParts[1] ?? '',
+            'memoryPercent' => (float) rtrim($parts[2], '%'),
+        ];
+    }
+}