AIGatewayService.php 24 KB

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  1. <?php
  2. namespace app\service;
  3. use think\Db;
  4. use think\Queue;
  5. class AIGatewayService{
  6. /**
  7. * 根据模型与任务类型构建 API 请求体(主分发方法)
  8. * @param string $status_val 任务类型:图生文、文生文、文生图、图生图
  9. * @param string $model 模型名,如 gpt-4、gemini_flash、dall-e-3 等
  10. * @param string $prompt 提示词
  11. * @param string $size 尺寸或比例,如 850x1133 或 9:16(文生图/图生图用)
  12. * @param string $product_base64Data 产品图 base64(图生图用)
  13. * @param string $product_mimeType 产品图 MIME 类型(图生图用)
  14. * @param string $template_base64Data 模板图 base64(图生图用)
  15. * @param string $template_mimeType 模板图 MIME 类型(图生图用)
  16. * @return array API 响应
  17. * @throws \Exception
  18. */
  19. public function buildRequestData(
  20. string $status_val,
  21. string $model,
  22. string $prompt,
  23. string $size = '',
  24. string $product_base64Data = '',
  25. string $product_mimeType = '',
  26. string $template_base64Data = '',
  27. string $template_mimeType = ''
  28. ) {
  29. // 1. 通用参数校验(提前拦截无效参数)
  30. $validStatus = ['图生文', '文生文', '文生图', '图生图'];
  31. if (!in_array($status_val, $validStatus)) {
  32. throw new \Exception("无效的任务类型: {$status_val}");
  33. }
  34. // 2. 按「模型+任务类型」分发到对应细分方法
  35. switch (true) {
  36. // 文生文
  37. case $status_val === '文生文' && $model === 'gemini_flash':
  38. $data = $this->buildText2TextGeminiFlash($prompt);
  39. break;
  40. case $status_val === '文生文' && $model === 'gpt-4':
  41. $data = $this->buildText2TextGpt4($prompt);
  42. break;
  43. // 文生图
  44. case $status_val === '文生图' && $model === 'dall-e-3':
  45. $data = $this->buildText2ImageDallE3($prompt, $size);
  46. break;
  47. case $status_val === '文生图' && $model === 'gemini-3-pro-preview':
  48. $data = $this->buildText2ImageGemini3Pro($prompt, $size);
  49. break;
  50. // 图生文
  51. case $status_val === '图生文' && $model === 'gemini-3-pro-preview':
  52. $data = $this->buildImage2TextGemini3Pro($prompt, $product_base64Data, $product_mimeType);
  53. break;
  54. // 图生图
  55. case $status_val === '图生图' && $model === 'gemini-3-pro-image-preview':
  56. $data = $this->buildImage2ImageGemini3ProImage($prompt, $size, $product_base64Data, $product_mimeType, $template_base64Data, $template_mimeType);
  57. break;
  58. case $status_val === '图生图' && $model === 'gemini-3.1-flash-image-preview':
  59. $data = $this->buildImage2ImageGemini31Flash($prompt, $size, $product_base64Data, $product_mimeType, $template_base64Data, $template_mimeType);
  60. break;
  61. // 未匹配的组合
  62. default:
  63. throw new \Exception("未配置模型+任务类型组合: {$model}({$status_val})");
  64. }
  65. // 3. 统一调用 API(图生图耗时通常更长,适当放宽超时时间)
  66. $timeout = ($status_val === '图生图') ? 180 : 60;
  67. return $this->callApi($data, $model, $timeout);
  68. }
  69. // -------------------------- 细分方法:按「任务类型+模型」拆分 --------------------------
  70. /**
  71. * 文生文 - gemini_flash 模型
  72. */
  73. private function buildText2TextGeminiFlash(string $prompt): array
  74. {
  75. return [
  76. "contents" => [
  77. [
  78. "role" => "user",
  79. "parts" => [["text" => $prompt]]
  80. ]
  81. ],
  82. "generationConfig" => [
  83. "responseModalities" => ["TEXT"],
  84. "maxOutputTokens" => 1024,
  85. "temperature" => 0.7,
  86. "language" => "zh-CN"
  87. ]
  88. ];
  89. }
  90. /**
  91. * 文生文 - gpt-4 模型
  92. */
  93. private function buildText2TextGpt4(string $prompt): array
  94. {
  95. return [
  96. 'model' => 'gpt-4',
  97. 'messages' => [['role' => 'user', 'content' => $prompt]],
  98. 'temperature' => 0.7,
  99. 'max_tokens' => 1024
  100. ];
  101. }
  102. /**
  103. * 文生图 - dall-e-3 模型
  104. */
  105. private function buildText2ImageDallE3(string $prompt, string $size): array
  106. {
  107. return [
  108. 'group' => 'OpenAI',
  109. 'prompt' => $prompt,
  110. 'model' => 'dall-e-3',
  111. 'n' => 1,
  112. 'size' => $size,
  113. 'quality' => 'hd',
  114. 'style' => 'vivid',
  115. 'response_format' => 'url',
  116. ];
  117. }
  118. /**
  119. * 文生图 - gemini-3-pro-preview 模型
  120. */
  121. private function buildText2ImageGemini3Pro(string $prompt, string $size): array
  122. {
  123. $supportedAspectRatios = ['1:1', '4:3', '3:4', '16:9', '9:16'];
  124. $aspectRatio = (in_array($size, $supportedAspectRatios)) ? $size : '1:1';
  125. return [
  126. "model" => "gemini-3-pro-preview",
  127. "prompt" => $prompt,
  128. "size" => $aspectRatio,
  129. "n" => 1,
  130. "quality" => "standard",
  131. "response_format" => "url"
  132. ];
  133. }
  134. /**
  135. * 图生文 - gemini-3-pro-preview 模型
  136. */
  137. private function buildImage2TextGemini3Pro(string $prompt, string $productBase64, string $productMimeType): array
  138. {
  139. return [
  140. "contents" => [
  141. [
  142. "role" => "user",
  143. "parts" => [
  144. ["inlineData" => ["mimeType" => $productMimeType, "data" => $productBase64]],
  145. ["text" => $prompt]
  146. ]
  147. ]
  148. ],
  149. "generationConfig" => [
  150. "responseModalities" => ["TEXT"],
  151. "maxOutputTokens" => 1000,
  152. "temperature" => 0.7,
  153. "language" => "zh-CN"
  154. ]
  155. ];
  156. }
  157. /**
  158. * 图生图 - gemini-3-pro-image-preview 模型
  159. */
  160. private function buildImage2ImageGemini3ProImage(
  161. string $prompt,
  162. string $size,
  163. string $productBase64,
  164. string $productMimeType,
  165. string $templateBase64,
  166. string $templateMimeType
  167. ): array {
  168. // 尺寸转标准比例
  169. if (!empty($size) && strpos($size, 'x') !== false) {
  170. $parts = explode('x', trim($size), 2);
  171. if (count($parts) == 2) {
  172. $w = (int)$parts[0];
  173. $h = (int)$parts[1];
  174. if ($w > 0 && $h > 0) {
  175. $ratio = $w / $h;
  176. $standard = [['1:1', 1], ['4:3', 4/3], ['3:4', 3/4], ['16:9', 16/9], ['9:16', 9/16]];
  177. $minDiff = PHP_FLOAT_MAX;
  178. foreach ($standard as $r) {
  179. $diff = abs($ratio - $r[1]);
  180. if ($diff < $minDiff) {
  181. $minDiff = $diff;
  182. $size = $r[0];
  183. }
  184. }
  185. }
  186. }
  187. }
  188. return [
  189. 'contents' => [
  190. [
  191. 'role' => 'user',
  192. 'parts' => [
  193. ['text' => $prompt],
  194. ['inline_data' => ['mime_type' => $productMimeType, 'data' => $productBase64]],
  195. ['inline_data' => ['mime_type' => $templateMimeType, 'data' => $templateBase64]]
  196. ]
  197. ]
  198. ],
  199. 'generationConfig' => [
  200. 'responseModalities' => ['IMAGE'],
  201. 'imageConfig' => ['aspectRatio' => $size, 'imageSize' => '1K']
  202. ]
  203. ];
  204. }
  205. /**
  206. * 图生图 - gemini-3.1-flash-image-preview 模型
  207. */
  208. private function buildImage2ImageGemini31Flash(
  209. string $prompt,
  210. string $size,
  211. string $productBase64,
  212. string $productMimeType,
  213. string $templateBase64,
  214. string $templateMimeType
  215. ): array {
  216. return [
  217. 'model' => 'gemini-3.1-flash-image-preview',
  218. 'messages' => [
  219. [
  220. 'role' => 'user',
  221. 'content' => [
  222. ['type' => 'text', 'text' => $prompt],
  223. [
  224. 'type' => 'image_url',
  225. 'image_url' => ['url' => 'data:' . $productMimeType . ';base64,' . $productBase64]
  226. ],
  227. [
  228. 'type' => 'image_url',
  229. 'image_url' => ['url' => 'data:' . $templateMimeType . ';base64,' . $templateBase64]
  230. ]
  231. ]
  232. ]
  233. ],
  234. 'response_modalities' => ['image'],
  235. 'image_config' => [
  236. 'aspect_ratio' => $size,
  237. 'quality' => 'high',
  238. 'width' => '850',
  239. 'height' => '1133'
  240. ],
  241. 'temperature' => 0.3,
  242. 'top_p' => 0.8,
  243. 'max_tokens' => 2048
  244. ];
  245. }
  246. /**
  247. * 构建视频请求体
  248. * $status_val == 文生视频、图生视频、首图尾图生视频
  249. * $model 模型
  250. * $prompt 提示词
  251. * $size 尺寸大小
  252. * $seconds 时间
  253. */
  254. public function Txt_to_video($status_val,$prompt, $model, $size, $seconds)
  255. {
  256. //判断使用哪个模型、在判断此模型使用类型
  257. if ($model === 'sora-2') {
  258. if ($status_val == '文生视频') {
  259. $data = [
  260. 'prompt' => trim($prompt),
  261. 'model' => $model ?: 'sora-2',
  262. 'seconds' => (string)((int)$seconds ?: 5),
  263. 'size' => $size ?: '1920x1080'
  264. ];
  265. return self::callApi($this->config['sora-2']['api_url'], $this->config['sora-2']['api_key'], $data, 300);
  266. }
  267. }else{
  268. throw new \Exception("未配置模型类型: {$model}");
  269. }
  270. }
  271. /**
  272. * 计算最大公约数
  273. */
  274. public function gcd($a, $b) {
  275. while ($b != 0) {
  276. $temp = $a % $b;
  277. $a = $b;
  278. $b = $temp;
  279. }
  280. return $a;
  281. }
  282. /**
  283. * 通用 API 调用方法(支持多接口故障自动切换)
  284. *
  285. * @param array $data 请求数据(JSON 格式)
  286. * @param string $model 模型名
  287. * @param int $timeout 请求超时时间(秒)
  288. * @return array 接口响应数据(成功时返回解析后的数组)
  289. * @throws \Exception 所有接口都失败时抛出异常
  290. */
  291. public function callApi(array $data, string $model, int $timeout = 60): array
  292. {
  293. $allErrors = [];
  294. $httpCodes = [];
  295. $curlErrnos = [];
  296. // 1. 预加载该模型的所有API配置(按优先级排序,仅启用状态)
  297. $aiModelConfigs = Db::name("ai_model")
  298. ->where('model_name', $model)
  299. ->where('status', '1')
  300. ->order('sort ASC')
  301. ->select();
  302. if (empty($aiModelConfigs)) {
  303. throw new \Exception("模型配置不存在: {$model}");
  304. }
  305. // 2. 提前序列化JSON(只做一次,避免重复编码)
  306. $postData = json_encode($data, JSON_UNESCAPED_UNICODE);
  307. if (json_last_error() !== JSON_ERROR_NONE) {
  308. throw new \Exception("请求数据JSON编码失败: " . json_last_error_msg());
  309. }
  310. // 3. 遍历所有接口,逐个尝试调用
  311. foreach ($aiModelConfigs as $index => $config) {
  312. $ch = null;
  313. try {
  314. // 跳过空配置(同时记录到错误数组,避免最终汇总时 $httpCodes/$curlErrnos 为空导致未定义下标)
  315. if (empty($config['api_url']) || empty($config['api_key'])) {
  316. $allErrors[] = "第" . ($index + 1) . "个接口配置无效(URL/Key为空)";
  317. $httpCodes[] = 0;
  318. $curlErrnos[] = 0;
  319. continue;
  320. }
  321. // 初始化curl(每个接口新建连接,避免复用导致的问题)
  322. $ch = curl_init();
  323. $curlOptions = [
  324. CURLOPT_URL => $config['api_url'],
  325. CURLOPT_RETURNTRANSFER => true,
  326. CURLOPT_POST => true,
  327. CURLOPT_POSTFIELDS => $postData,
  328. CURLOPT_HTTPHEADER => [
  329. 'Content-Type: application/json',
  330. 'Authorization: Bearer ' . $config['api_key'],
  331. 'Connection: keep-alive',
  332. 'Keep-Alive: 300'
  333. ],
  334. CURLOPT_TIMEOUT => $timeout,
  335. CURLOPT_CONNECTTIMEOUT => 15,
  336. CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  337. CURLOPT_FAILONERROR => false,
  338. // 生产环境建议开启SSL验证(需配置CA证书)
  339. CURLOPT_SSL_VERIFYPEER => true,
  340. CURLOPT_SSL_VERIFYHOST => 2,
  341. CURLOPT_TCP_NODELAY => true,
  342. CURLOPT_FORBID_REUSE => false,
  343. CURLOPT_FRESH_CONNECT => false
  344. ];
  345. curl_setopt_array($ch, $curlOptions);
  346. // 执行请求(每个接口仅调用一次,不做同接口重试)
  347. $response = curl_exec($ch);
  348. $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
  349. $curlErrno = curl_errno($ch);
  350. $curlError = curl_error($ch);
  351. // 检查CURL底层错误
  352. if ($response === false) {
  353. $errorMsg = "第" . ($index + 1) . "个接口CURL失败 [{$curlErrno}]: {$curlError}";
  354. $allErrors[] = $errorMsg;
  355. $httpCodes[] = $httpCode;
  356. $curlErrnos[] = $curlErrno;
  357. continue; // 跳过当前接口,尝试下一个
  358. }
  359. // 解析响应
  360. $result = empty($response) ? [] : json_decode($response, true);
  361. if (json_last_error() !== JSON_ERROR_NONE && !empty($response)) {
  362. $errorMsg = "第" . ($index + 1) . "个接口响应解析失败: " . json_last_error_msg();
  363. $allErrors[] = $errorMsg;
  364. $httpCodes[] = $httpCode;
  365. $curlErrnos[] = $curlErrno;
  366. continue;
  367. }
  368. // 检查API业务错误
  369. if (isset($result['error'])) {
  370. $apiErrorDetail = $result['error']['message'] ?? '';
  371. $errorType = $result['error']['type'] ?? '';
  372. $errorCode = $result['error']['code'] ?? '';
  373. $errorMessages = [
  374. 'invalid_request_error' => '请求参数错误',
  375. 'authentication_error' => '认证失败',
  376. 'rate_limit_error' => '请求频率过高',
  377. 'insufficient_quota' => '额度不足',
  378. 'billing_not_active' => '账户未开通付费',
  379. 'content_policy_violation' => '内容违反政策',
  380. 'model_not_found' => '模型不存在或无可用渠道',
  381. 'bad_response_body' => '上游响应体不完整',
  382. 'server_error' => '服务端临时异常'
  383. ];
  384. $friendlyMessage = $errorMessages[$errorCode] ?? ($errorMessages[$errorType] ?? 'API服务错误');
  385. $detailedError = "第" . ($index + 1) . "个接口{$friendlyMessage}";
  386. if ($errorCode) $detailedError .= " (错误代码: {$errorCode})";
  387. if ($apiErrorDetail) $detailedError .= ": {$apiErrorDetail}";
  388. $allErrors[] = $detailedError;
  389. $httpCodes[] = $httpCode;
  390. $curlErrnos[] = $curlErrno;
  391. continue;
  392. }
  393. // 检查HTTP状态码
  394. if ($httpCode !== 200) {
  395. $statusMessages = [
  396. 400 => '请求参数不合法',
  397. 401 => 'API密钥无效或权限不足',
  398. 403 => '访问被拒绝',
  399. 404 => 'API端点不存在',
  400. 429 => '请求过于频繁,请稍后再试',
  401. 500 => '服务器内部错误',
  402. 503 => '服务暂时不可用'
  403. ];
  404. $statusMessage = $statusMessages[$httpCode] ?? "HTTP错误({$httpCode})";
  405. $allErrors[] = "第" . ($index + 1) . "个接口{$statusMessage}";
  406. $httpCodes[] = $httpCode;
  407. $curlErrnos[] = $curlErrno;
  408. continue;
  409. }
  410. // 任意一个接口成功,直接返回结果
  411. curl_close($ch);
  412. return $result;
  413. } catch (\Exception $e) {
  414. // 捕获当前接口的异常,记录后尝试下一个
  415. $allErrors[] = "第" . ($index + 1) . "个接口异常: " . $e->getMessage();
  416. $httpCodes[] = 0;
  417. $curlErrnos[] = 0;
  418. if (is_resource($ch)) {
  419. curl_close($ch);
  420. }
  421. continue;
  422. }
  423. }
  424. // 所有接口都失败,抛出汇总异常
  425. $finalError = "所有API接口调用失败(共尝试" . count($aiModelConfigs) . "个接口)\n";
  426. $finalError .= "失败详情:\n- " . implode("\n- ", $allErrors) . "\n";
  427. $lastHttpCode = $httpCodes[count($httpCodes) - 1] ?? 0;
  428. $lastCurlErrno = $curlErrnos[count($curlErrnos) - 1] ?? 0;
  429. $finalError .= "建议解决方案: " . $this->getErrorSolution($lastHttpCode, $lastCurlErrno) . "\n";
  430. throw new \Exception($finalError);
  431. }
  432. /**
  433. * 获取错误原因
  434. */
  435. private function getErrorCause(int $httpCode, string $apiErrorDetail, int $curlErrno): string
  436. {
  437. $causeMap = [
  438. // HTTP状态码
  439. 400 => '参数格式错误/必填参数缺失',
  440. 401 => 'API Key无效/过期/无权限',
  441. 429 => '超出接口调用频率限制',
  442. 500 => '服务端内部故障',
  443. 503 => '服务维护/算力不足',
  444. // CURL错误码
  445. CURLE_OPERATION_TIMEDOUT => '请求超时(模型处理耗时超过设置值)',
  446. CURLE_COULDNT_CONNECT => '无法连接到API服务器',
  447. CURLE_SSL_CACERT => 'SSL证书验证失败',
  448. // 业务错误关键词
  449. 'model_not_found' => '模型渠道未开通/无可用资源',
  450. 'invalid_size' => '模型尺寸参数不符合要求',
  451. ];
  452. // 优先匹配CURL错误码
  453. if (isset($causeMap[$curlErrno])) {
  454. return $causeMap[$curlErrno];
  455. }
  456. // 匹配HTTP状态码
  457. if (isset($causeMap[$httpCode])) {
  458. return $causeMap[$httpCode];
  459. }
  460. // 匹配业务错误关键词
  461. foreach ($causeMap as $key => $cause) {
  462. if (is_string($key) && strpos($apiErrorDetail, $key) !== false) {
  463. return $cause;
  464. }
  465. }
  466. // 特殊关键词匹配
  467. if (strpos($apiErrorDetail, 'No available capacity') !== false) {
  468. return '模型算力不足,无可用资源';
  469. } elseif (strpos($apiErrorDetail, 'size is invalid') !== false) {
  470. return '模型尺寸参数无效';
  471. }
  472. // 兜底
  473. return $apiErrorDetail ?: '未知原因';
  474. }
  475. /**
  476. * 获取错误解决方案
  477. */
  478. private function getErrorSolution(int $httpCode, int $curlErrno): string
  479. {
  480. $solutionMap = [
  481. // HTTP状态码
  482. 400 => '1. 检查参数是否完整 2. 确认参数类型 3. 验证尺寸/模型名是否合法',
  483. 401 => '1. 检查API Key是否正确 2. 确认Key未过期/有对应模型权限',
  484. 429 => '1. 降低请求频率 2. 等待1-5分钟后重试 3. 联系服务商提升配额',
  485. 500 => '1. 等待几分钟后重试 2. 联系API服务商排查',
  486. 503 => '1. 等待算力释放 2. 联系服务商扩容',
  487. // CURL错误码
  488. CURLE_OPERATION_TIMEDOUT => '1. 延长超时时间 2. 检查模型生成耗时 3. 重试请求',
  489. CURLE_COULDNT_CONNECT => '1. 检查API地址是否正确 2. 验证网络连通性 3. 检查防火墙配置',
  490. CURLE_SSL_CACERT => '1. 开启SSL证书验证 2. 配置正确的CA证书路径 3. 确认API域名证书有效',
  491. ];
  492. if (isset($solutionMap[$curlErrno])) {
  493. return $solutionMap[$curlErrno];
  494. }
  495. if (isset($solutionMap[$httpCode])) {
  496. return $solutionMap[$httpCode];
  497. }
  498. return '1. 等待几分钟后重试 2. 检查API服务提供商状态 3. 联系服务提供商确认服务可用性';
  499. }
  500. /**
  501. * 获取图片的base64数据和MIME类型
  502. * @return array 包含base64数据和MIME类型的数组
  503. */
  504. public static function file_get_contents($ImageUrl){
  505. // 兼容三种输入:
  506. // 1) 本地相对路径:uploads/xxx.png 或 /uploads/xxx.png
  507. // 2) 已是完整 URL:https://.../xxx.png
  508. // 3) OSS 相对路径(本地不存在时,用 oss.host 兜底拉取)
  509. $imageUrl = trim((string)$ImageUrl);
  510. if ($imageUrl === '') {
  511. throw new \Exception('图片路径不能为空');
  512. }
  513. $rootPath = str_replace('\\', '/', ROOT_PATH);
  514. $relativePath = ltrim($imageUrl, '/');
  515. $localPath = rtrim($rootPath, '/') . '/public/' . $relativePath;
  516. // 前端可能传了 URL 编码文件名(如中文名),本地匹配时做一次解码兜底
  517. $localPathDecoded = rtrim($rootPath, '/') . '/public/' . urldecode($relativePath);
  518. $imageContent = false;
  519. $mimeType = '';
  520. // A. 直接是完整 URL,直接远程读取
  521. if (preg_match('/^https?:\/\//i', $imageUrl)) {
  522. $imageContent = @file_get_contents($imageUrl);
  523. } else {
  524. // B. 本地优先:先按原路径查,再按 urldecode 后路径查
  525. if (file_exists($localPath)) {
  526. $imageContent = @file_get_contents($localPath);
  527. if ($imageContent !== false) {
  528. $finfo = finfo_open(FILEINFO_MIME_TYPE);
  529. $mimeType = finfo_file($finfo, $localPath);
  530. finfo_close($finfo);
  531. }
  532. } elseif (file_exists($localPathDecoded)) {
  533. $imageContent = @file_get_contents($localPathDecoded);
  534. if ($imageContent !== false) {
  535. $finfo = finfo_open(FILEINFO_MIME_TYPE);
  536. $mimeType = finfo_file($finfo, $localPathDecoded);
  537. finfo_close($finfo);
  538. }
  539. } else {
  540. // C. 本地不存在:尝试从 OSS 拉取
  541. $ossHost = trim((string)config('oss.host'));
  542. if ($ossHost !== '') {
  543. if (stripos($ossHost, 'http://') !== 0 && stripos($ossHost, 'https://') !== 0) {
  544. $ossHost = 'https://' . $ossHost;
  545. }
  546. $remoteUrl = rtrim($ossHost, '/') . '/' . ltrim($relativePath, '/');
  547. $imageContent = @file_get_contents($remoteUrl);
  548. }
  549. }
  550. }
  551. if ($imageContent === false || $imageContent === '') {
  552. throw new \Exception('图片内容读取失败(本地/OSS均未读取到)');
  553. }
  554. // 若本地未拿到 MIME,则根据二进制内容推断
  555. if ($mimeType === '') {
  556. $finfo = finfo_open(FILEINFO_MIME_TYPE);
  557. $mimeType = finfo_buffer($finfo, $imageContent);
  558. finfo_close($finfo);
  559. }
  560. if (!$mimeType) {
  561. $mimeType = 'image/png';
  562. }
  563. return [
  564. 'base64Data' => base64_encode($imageContent),
  565. 'mimeType' => $mimeType
  566. ];
  567. }
  568. }