[增添]添加了Prometheus服务、对应的widget展示（待美化）

management-panel/app/Filament/Widgets/PrometheusMetrics.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Filament\Widgets;
+
+use App\Services\PrometheusService;
+use Filament\Widgets\Widget;
+
+class PrometheusMetrics extends Widget
+{
+    protected static string $view = 'filament.widgets.prometheus-metrics';
+
+    protected function getViewData(): array
+    {
+        $prometheus = new PrometheusService();
+
+        $currentMemoryUsage = $prometheus->query('(1 - (node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes)) * 100');
+        $memoryUsageRange = $prometheus->queryRange(
+            '(1 - (avg_over_time(node_memory_MemAvailable_bytes[1h]) / avg_over_time(node_memory_MemTotal_bytes[1h]))) * 100',
+            now()->subHour()->timestamp,
+            now()->timestamp,
+            60
+        );
+
+        return [
+            'currentMemoryUsage' => $currentMemoryUsage,
+            'memoryUsageRange' => $memoryUsageRange,
+        ];
+    }
+}

management-panel/app/Providers/Filament/AdminPanelProvider.php

@@ -2,6 +2,7 @@
 
 namespace App\Providers\Filament;
 
+use App\Filament\Widgets\PrometheusMetrics;
 use App\Filament\Widgets\UpdateConfigWidget;
 use Filament\Http\Middleware\Authenticate;
 use Filament\Http\Middleware\DisableBladeIconComponents;
@@ -42,6 +43,7 @@ class AdminPanelProvider extends PanelProvider
                 Widgets\AccountWidget::class,
 //                Widgets\FilamentInfoWidget::class,
                 UpdateConfigWidget::class,
+                PrometheusMetrics::class,
             ])
             ->middleware([
                 EncryptCookies::class,

management-panel/app/Services/PrometheusService.php

@@ -0,0 +1,62 @@
+<?php
+namespace App\Services;
+
+use GuzzleHttp\Client;
+
+class PrometheusService
+{
+    protected $client;
+    protected $baseUri = 'http://localhost:9090/api/v1/'; // Prometheus 的默认地址
+
+    public function __construct()
+    {
+        $this->client = new Client(['base_uri' => $this->baseUri]);
+    }
+
+    /**
+     * 执行 Prometheus 实时查询
+     *
+     * @param string $query PromQL 查询语句
+     * @return array 返回查询结果
+     */
+    public function query($query)
+    {
+        $response = $this->client->get('query', [
+            'query' => ['query' => $query],
+        ]);
+        return json_decode($response->getBody()->getContents(), true);
+    }
+
+    /**
+     * 执行 Prometheus 区间查询
+     *
+     * @param string $query PromQL 查询语句
+     * @param int $start 开始时间（时间戳，单位秒）
+     * @param int $end 结束时间（时间戳，单位秒）
+     * @param int $step 时间间隔（单位秒）
+     * @return array 返回查询结果
+     */
+    public function queryRange($query, $start, $end, $step)
+    {
+        $response = $this->client->get('query_range', [
+            'query' => [
+                'query' => $query,
+                'start' => $start,
+                'end' => $end,
+                'step' => $step,
+            ],
+        ]);
+        return json_decode($response->getBody()->getContents(), true);
+    }
+
+    /**
+     * 获取 Prometheus 监控的所有目标
+     *
+     * @return array 返回目标信息
+     */
+    public function getTargets()
+    {
+        $response = $this->client->get('targets');
+        return json_decode($response->getBody()->getContents(), true);
+    }
+}

management-panel/resources/views/filament/widgets/prometheus-metrics.blade.php

@@ -0,0 +1,34 @@
+<x-filament-widgets::widget>
+    <x-filament::section>
+        <!-- resources/views/filament/widgets/memory-metrics-widget.blade.php -->
+
+        <div>
+            <h2>当前内存使用率</h2>
+            @if (isset($currentMemoryUsage['data']['result'][0]['value'][1]))
+                <pre>{{ number_format($currentMemoryUsage['data']['result'][0]['value'][1], 2) }}%</pre>
+            @else
+                <p>无法获取内存使用率数据</p>
+            @endif
+
+            <h2>过去一小时内存使用情况</h2>
+            @if (isset($memoryUsageRange['data']['result']) && count($memoryUsageRange['data']['result']) > 0)
+                <ul>
+                    @foreach ($memoryUsageRange['data']['result'] as $result)
+                        <li>
+                            <strong>{{ $result['metric']['instance'] }}:</strong>
+                            <ul>
+                                @foreach ($result['values'] as $value)
+                                    <li>{{ number_format($value[1], 2) }}%</li>
+                                @endforeach
+                            </ul>
+                        </li>
+                    @endforeach
+                </ul>
+            @else
+                <p>无法获取内存使用情况数据</p>
+            @endif
+        </div>
+
+
+    </x-filament::section>
+</x-filament-widgets::widget>