#feature: add AI log analysis & some bugfix
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275
app/Clients/AiClient.php
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275
app/Clients/AiClient.php
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<?php
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namespace App\Clients;
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use App\Services\ConfigService;
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use Illuminate\Support\Facades\Http;
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use Illuminate\Support\Facades\RateLimiter;
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use RuntimeException;
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class AiClient
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{
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private ConfigService $configService;
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private ?array $currentProvider = null;
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public function __construct(ConfigService $configService)
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{
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$this->configService = $configService;
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}
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/**
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* 获取所有配置的 AI 提供商
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*/
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public function getProviders(): array
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{
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$providers = $this->configService->get('log_analysis.ai_providers', []);
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// 如果数据库没有配置，使用 .env 默认配置
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if (empty($providers)) {
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$envConfig = config('services.ai');
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if (!empty($envConfig['api_key'])) {
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$providers = [
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'default' => [
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'name' => '默认 (环境变量)',
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'endpoint' => $envConfig['endpoint'],
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'api_key' => $envConfig['api_key'],
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'model' => $envConfig['model'],
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'temperature' => $envConfig['temperature'],
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'timeout' => $envConfig['timeout'],
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'max_tokens' => $envConfig['max_tokens'],
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'enabled' => true,
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],
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];
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}
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}
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return $providers;
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}
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/**
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* 获取当前激活的 AI 提供商
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*/
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public function getActiveProvider(): ?array
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{
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if ($this->currentProvider !== null) {
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return $this->currentProvider;
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}
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$activeKey = $this->configService->get('log_analysis.active_ai_provider');
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$providers = $this->getProviders();
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if ($activeKey && isset($providers[$activeKey]) && ($providers[$activeKey]['enabled'] ?? true)) {
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$this->currentProvider = $providers[$activeKey];
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$this->currentProvider['key'] = $activeKey;
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return $this->currentProvider;
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}
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// 返回第一个启用的提供商
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foreach ($providers as $key => $provider) {
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if ($provider['enabled'] ?? true) {
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$this->currentProvider = $provider;
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$this->currentProvider['key'] = $key;
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return $this->currentProvider;
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}
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}
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return null;
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}
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/**
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* 设置当前使用的提供商
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*/
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public function setActiveProvider(string $providerKey): void
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{
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$providers = $this->getProviders();
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if (!isset($providers[$providerKey])) {
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throw new RuntimeException("AI 提供商不存在: {$providerKey}");
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}
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$this->configService->set('log_analysis.active_ai_provider', $providerKey);
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$this->currentProvider = $providers[$providerKey];
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$this->currentProvider['key'] = $providerKey;
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}
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/**
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* 检查是否已配置
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*/
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public function isConfigured(): bool
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{
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return $this->getActiveProvider() !== null;
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}
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/**
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* 发送聊天请求 (OpenAI 兼容接口)
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*
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* @param array $messages 消息数组
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* @param string|null $systemPrompt 系统提示词
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* @return string AI 响应内容
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*/
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public function chat(array $messages, ?string $systemPrompt = null): string
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{
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$provider = $this->getActiveProvider();
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if (!$provider) {
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throw new RuntimeException('未配置 AI 服务，请在设置页面配置 AI 提供商');
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}
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// 速率限制
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$this->waitForRateLimit($provider['key'] ?? 'default');
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$allMessages = [];
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if ($systemPrompt) {
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$allMessages[] = ['role' => 'system', 'content' => $systemPrompt];
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}
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$allMessages = array_merge($allMessages, $messages);
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$endpoint = rtrim($provider['endpoint'], '/') . '/chat/completions';
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$response = Http::timeout($provider['timeout'] ?? 120)
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->withHeaders([
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'Authorization' => 'Bearer ' . $provider['api_key'],
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'Content-Type' => 'application/json',
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])
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->post($endpoint, [
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'model' => $provider['model'],
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'messages' => $allMessages,
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'temperature' => $provider['temperature'] ?? 0.3,
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'max_tokens' => $provider['max_tokens'] ?? 4096,
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]);
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if (!$response->successful()) {
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$error = $response->json('error.message') ?? $response->body();
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throw new RuntimeException("AI 请求失败: {$error}");
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}
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return $response->json('choices.0.message.content', '');
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}
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/**
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* 分析日志并返回结构化结果
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*
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* @param string $logsContent 日志内容
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* @param string|null $codeContext 相关代码上下文
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* @return array 分析结果
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*/
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public function analyzeLogs(string $logsContent, ?string $codeContext = null): array
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{
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$systemPrompt = $this->buildAnalysisSystemPrompt();
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$userContent = $this->buildAnalysisUserPrompt($logsContent, $codeContext);
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$response = $this->chat([
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['role' => 'user', 'content' => $userContent],
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], $systemPrompt);
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return $this->parseAnalysisResponse($response);
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}
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/**
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* 测试连接
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*/
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public function testConnection(): array
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{
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$provider = $this->getActiveProvider();
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if (!$provider) {
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return [
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'success' => false,
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'message' => '未配置 AI 服务',
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];
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}
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try {
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$response = $this->chat([
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['role' => 'user', 'content' => 'Hello, please respond with "OK" only.'],
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]);
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return [
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'success' => true,
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'message' => '连接成功',
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'provider' => $provider['name'] ?? $provider['key'],
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'model' => $provider['model'],
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];
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} catch (\Exception $e) {
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return [
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'success' => false,
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'message' => $e->getMessage(),
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];
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}
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}
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private function buildAnalysisSystemPrompt(): string
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{
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return <<<'PROMPT'
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你是一个专业的日志分析专家。你的任务是分析提供的日志内容，识别异常和问题，并给出分类和建议。
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请按照以下 JSON 格式返回分析结果：
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{
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"core_anomalies": [
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{
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"type": "error|warning|performance|security",
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"classification": "database|network|application|configuration|resource|other",
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"count": 数量,
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"sample": "示例日志内容",
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"possible_cause": "可能的原因",
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"suggestion": "建议的解决方案"
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}
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],
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"summary": "整体分析摘要",
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"impact": "high|medium|low",
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"trends": "趋势分析（可选）"
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}
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分类说明：
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- type: error(错误), warning(警告), performance(性能问题), security(安全问题)
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- classification: database(数据库), network(网络), application(应用逻辑), configuration(配置), resource(资源), other(其他)
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- impact: high(高影响), medium(中等影响), low(低影响)
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请确保返回有效的 JSON 格式。
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PROMPT;
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}
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private function buildAnalysisUserPrompt(string $logsContent, ?string $codeContext): string
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{
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$prompt = "请分析以下日志内容：\n\n```\n{$logsContent}\n```";
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if ($codeContext) {
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$prompt .= "\n\n相关代码上下文：\n\n```\n{$codeContext}\n```";
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}
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return $prompt;
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}
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private function parseAnalysisResponse(string $response): array
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{
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// 尝试提取 JSON
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if (preg_match('/\{[\s\S]*}/', $response, $matches)) {
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$json = $matches[0];
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$decoded = json_decode($json, true);
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if (json_last_error() === JSON_ERROR_NONE) {
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return $decoded;
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}
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}
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// 如果无法解析 JSON，返回原始响应
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return [
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'core_anomalies' => [],
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'summary' => $response,
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'impact' => 'unknown',
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'raw_response' => $response,
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];
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}
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private function waitForRateLimit(string $providerKey): void
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{
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$key = "ai_rate_limit:{$providerKey}";
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// 每分钟最多 60 次请求
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$maxAttempts = 60;
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$decaySeconds = 60;
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if (RateLimiter::tooManyAttempts($key, $maxAttempts)) {
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$seconds = RateLimiter::availableIn($key);
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sleep($seconds);
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}
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RateLimiter::hit($key, $decaySeconds);
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}
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}
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