562 lines
No EOL
25 KiB
JavaScript
562 lines
No EOL
25 KiB
JavaScript
import * as fs from 'fs'; // Import fs module
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import { getServiceAdapter } from './adapter.js';
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import { MODEL_PROVIDER } from './common.js';
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import axios from 'axios';
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/**
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* Manages a pool of API service providers, handling their health and selection.
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*/
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export class ProviderPoolManager {
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// 默认健康检查模型配置
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// 键名必须与 MODEL_PROVIDER 常量值一致
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static DEFAULT_HEALTH_CHECK_MODELS = {
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'gemini-cli-oauth': 'gemini-2.5-flash',
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'gemini-antigravity': 'gemini-2.5-flash',
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'openai-custom': 'gpt-3.5-turbo',
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'claude-custom': 'claude-3-7-sonnet-20250219',
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'claude-kiro-oauth': 'claude-haiku-4-5',
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'openai-qwen-oauth': 'qwen3-coder-flash',
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'openaiResponses-custom': 'gpt-4o-mini'
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};
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constructor(providerPools, options = {}) {
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this.providerPools = providerPools;
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this.globalConfig = options.globalConfig || {}; // 存储全局配置
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this.providerStatus = {}; // Tracks health and usage for each provider instance
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this.roundRobinIndex = {}; // Tracks the current index for round-robin selection for each provider type
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// 使用 ?? 运算符确保 0 也能被正确设置，而不是被 || 替换为默认值
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this.maxErrorCount = options.maxErrorCount ?? 3; // Default to 3 errors before marking unhealthy
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this.healthCheckInterval = options.healthCheckInterval ?? 10 * 60 * 1000; // Default to 10 minutes
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// 日志级别控制
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this.logLevel = options.logLevel || 'info'; // 'debug', 'info', 'warn', 'error'
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// 添加防抖机制，避免频繁的文件 I/O 操作
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this.saveDebounceTime = options.saveDebounceTime || 1000; // 默认1秒防抖
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this.saveTimer = null;
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this.pendingSaves = new Set(); // 记录待保存的 providerType
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this.initializeProviderStatus();
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}
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/**
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* 日志输出方法，支持日志级别控制
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* @private
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*/
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_log(level, message) {
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const levels = { debug: 0, info: 1, warn: 2, error: 3 };
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if (levels[level] >= levels[this.logLevel]) {
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const logMethod = level === 'debug' ? 'log' : level;
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console[logMethod](`[ProviderPoolManager] ${message}`);
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}
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}
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/**
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* 查找指定的 provider
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* @private
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*/
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_findProvider(providerType, uuid) {
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if (!providerType || !uuid) {
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this._log('error', `Invalid parameters: providerType=${providerType}, uuid=${uuid}`);
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return null;
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}
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const pool = this.providerStatus[providerType];
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return pool?.find(p => p.uuid === uuid) || null;
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}
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/**
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* Initializes the status for each provider in the pools.
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* Initially, all providers are considered healthy and have zero usage.
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*/
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initializeProviderStatus() {
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for (const providerType in this.providerPools) {
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this.providerStatus[providerType] = [];
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this.roundRobinIndex[providerType] = 0; // Initialize round-robin index for each type
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this.providerPools[providerType].forEach((providerConfig) => {
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// Ensure initial health and usage stats are present in the config
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providerConfig.isHealthy = providerConfig.isHealthy !== undefined ? providerConfig.isHealthy : true;
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providerConfig.isDisabled = providerConfig.isDisabled !== undefined ? providerConfig.isDisabled : false;
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providerConfig.lastUsed = providerConfig.lastUsed !== undefined ? providerConfig.lastUsed : null;
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providerConfig.usageCount = providerConfig.usageCount !== undefined ? providerConfig.usageCount : 0;
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providerConfig.errorCount = providerConfig.errorCount !== undefined ? providerConfig.errorCount : 0;
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// 优化2: 简化 lastErrorTime 处理逻辑
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providerConfig.lastErrorTime = providerConfig.lastErrorTime instanceof Date
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? providerConfig.lastErrorTime.toISOString()
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: (providerConfig.lastErrorTime || null);
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// 健康检测相关字段
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providerConfig.lastHealthCheckTime = providerConfig.lastHealthCheckTime || null;
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providerConfig.lastHealthCheckModel = providerConfig.lastHealthCheckModel || null;
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providerConfig.lastErrorMessage = providerConfig.lastErrorMessage || null;
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this.providerStatus[providerType].push({
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config: providerConfig,
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uuid: providerConfig.uuid, // Still keep uuid at the top level for easy access
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});
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});
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}
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this._log('info', `Initialized provider statuses: ok (maxErrorCount: ${this.maxErrorCount})`);
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}
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/**
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* Selects a provider from the pool for a given provider type.
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* Currently uses a simple round-robin for healthy providers.
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* If requestedModel is provided, providers that don't support the model will be excluded.
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* @param {string} providerType - The type of provider to select (e.g., 'gemini-cli', 'openai-custom').
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* @param {string} [requestedModel] - Optional. The model name to filter providers by.
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* @returns {object|null} The selected provider's configuration, or null if no healthy provider is found.
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*/
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selectProvider(providerType, requestedModel = null, options = {}) {
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// 参数校验
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if (!providerType || typeof providerType !== 'string') {
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this._log('error', `Invalid providerType: ${providerType}`);
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return null;
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}
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const availableProviders = this.providerStatus[providerType] || [];
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let availableAndHealthyProviders = availableProviders.filter(p =>
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p.config.isHealthy && !p.config.isDisabled
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);
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// 如果指定了模型，则排除不支持该模型的提供商
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if (requestedModel) {
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const modelFilteredProviders = availableAndHealthyProviders.filter(p => {
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// 如果提供商没有配置 notSupportedModels，则认为它支持所有模型
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if (!p.config.notSupportedModels || !Array.isArray(p.config.notSupportedModels)) {
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return true;
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}
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// 检查 notSupportedModels 数组中是否包含请求的模型，如果包含则排除
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return !p.config.notSupportedModels.includes(requestedModel);
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});
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if (modelFilteredProviders.length === 0) {
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this._log('warn', `No available providers for type: ${providerType} that support model: ${requestedModel}`);
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return null;
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}
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availableAndHealthyProviders = modelFilteredProviders;
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this._log('debug', `Filtered ${modelFilteredProviders.length} providers supporting model: ${requestedModel}`);
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}
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if (availableAndHealthyProviders.length === 0) {
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this._log('warn', `No available and healthy providers for type: ${providerType}`);
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return null;
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}
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// 为每个提供商类型和模型组合维护独立的轮询索引
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// 使用组合键：providerType 或 providerType:model
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const indexKey = requestedModel ? `${providerType}:${requestedModel}` : providerType;
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const currentIndex = this.roundRobinIndex[indexKey] || 0;
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// 使用取模确保索引始终在有效范围内，即使列表长度变化
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const providerIndex = currentIndex % availableAndHealthyProviders.length;
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const selected = availableAndHealthyProviders[providerIndex];
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// 更新下次轮询的索引
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this.roundRobinIndex[indexKey] = (currentIndex + 1) % availableAndHealthyProviders.length;
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// 更新使用信息（除非明确跳过）
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if (!options.skipUsageCount) {
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selected.config.lastUsed = new Date().toISOString();
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selected.config.usageCount++;
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// 使用防抖保存
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this._debouncedSave(providerType);
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}
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this._log('debug', `Selected provider for ${providerType} (round-robin): ${selected.config.uuid}${requestedModel ? ` for model: ${requestedModel}` : ''}${options.skipUsageCount ? ' (skip usage count)' : ''}`);
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return selected.config;
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}
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/**
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* Marks a provider as unhealthy (e.g., after an API error).
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* @param {string} providerType - The type of the provider.
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* @param {object} providerConfig - The configuration of the provider to mark.
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* @param {string} [errorMessage] - Optional error message to store.
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*/
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markProviderUnhealthy(providerType, providerConfig, errorMessage = null) {
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if (!providerConfig?.uuid) {
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this._log('error', 'Invalid providerConfig in markProviderUnhealthy');
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return;
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}
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const provider = this._findProvider(providerType, providerConfig.uuid);
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if (provider) {
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provider.config.errorCount++;
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provider.config.lastErrorTime = new Date().toISOString();
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// 保存错误信息
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if (errorMessage) {
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provider.config.lastErrorMessage = errorMessage;
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}
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if (provider.config.errorCount >= this.maxErrorCount) {
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provider.config.isHealthy = false;
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this._log('warn', `Marked provider as unhealthy: ${providerConfig.uuid} for type ${providerType}. Total errors: ${provider.config.errorCount}`);
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} else {
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this._log('warn', `Provider ${providerConfig.uuid} for type ${providerType} error count: ${provider.config.errorCount}/${this.maxErrorCount}. Still healthy.`);
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}
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this._debouncedSave(providerType);
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}
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}
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/**
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* Marks a provider as healthy.
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* @param {string} providerType - The type of the provider.
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* @param {object} providerConfig - The configuration of the provider to mark.
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* @param {boolean} resetUsageCount - Whether to reset usage count (optional, default: false).
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* @param {string} [healthCheckModel] - Optional model name used for health check.
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*/
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markProviderHealthy(providerType, providerConfig, resetUsageCount = false, healthCheckModel = null) {
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if (!providerConfig?.uuid) {
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this._log('error', 'Invalid providerConfig in markProviderHealthy');
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return;
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}
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const provider = this._findProvider(providerType, providerConfig.uuid);
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if (provider) {
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provider.config.isHealthy = true;
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provider.config.errorCount = 0;
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provider.config.lastErrorTime = null;
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provider.config.lastErrorMessage = null;
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// 更新健康检测信息
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provider.config.lastHealthCheckTime = new Date().toISOString();
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if (healthCheckModel) {
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provider.config.lastHealthCheckModel = healthCheckModel;
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}
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// 只有在明确要求重置使用计数时才重置
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if (resetUsageCount) {
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provider.config.usageCount = 0;
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}else{
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provider.config.usageCount++;
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provider.config.lastUsed = new Date().toISOString();
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}
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this._log('info', `Marked provider as healthy: ${provider.config.uuid} for type ${providerType}${resetUsageCount ? ' (usage count reset)' : ''}`);
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this._debouncedSave(providerType);
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}
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}
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/**
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* 重置提供商的计数器（错误计数和使用计数）
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* @param {string} providerType - The type of the provider.
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* @param {object} providerConfig - The configuration of the provider to mark.
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*/
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resetProviderCounters(providerType, providerConfig) {
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if (!providerConfig?.uuid) {
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this._log('error', 'Invalid providerConfig in resetProviderCounters');
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return;
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}
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const provider = this._findProvider(providerType, providerConfig.uuid);
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if (provider) {
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provider.config.errorCount = 0;
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provider.config.usageCount = 0;
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this._log('info', `Reset provider counters: ${provider.config.uuid} for type ${providerType}`);
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this._debouncedSave(providerType);
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}
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}
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/**
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* 禁用指定提供商
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* @param {string} providerType - 提供商类型
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* @param {object} providerConfig - 提供商配置
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*/
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disableProvider(providerType, providerConfig) {
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if (!providerConfig?.uuid) {
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this._log('error', 'Invalid providerConfig in disableProvider');
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return;
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}
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const provider = this._findProvider(providerType, providerConfig.uuid);
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if (provider) {
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provider.config.isDisabled = true;
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this._log('info', `Disabled provider: ${providerConfig.uuid} for type ${providerType}`);
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this._debouncedSave(providerType);
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}
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}
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/**
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* 启用指定提供商
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* @param {string} providerType - 提供商类型
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* @param {object} providerConfig - 提供商配置
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*/
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enableProvider(providerType, providerConfig) {
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if (!providerConfig?.uuid) {
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this._log('error', 'Invalid providerConfig in enableProvider');
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return;
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}
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const provider = this._findProvider(providerType, providerConfig.uuid);
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if (provider) {
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provider.config.isDisabled = false;
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this._log('info', `Enabled provider: ${providerConfig.uuid} for type ${providerType}`);
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this._debouncedSave(providerType);
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}
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}
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/**
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* Performs health checks on all providers in the pool.
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* This method would typically be called periodically (e.g., via cron job).
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*/
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async performHealthChecks(isInit = false) {
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this._log('info', 'Performing health checks on all providers...');
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const now = new Date();
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for (const providerType in this.providerStatus) {
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for (const providerStatus of this.providerStatus[providerType]) {
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const providerConfig = providerStatus.config;
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// Only attempt to health check unhealthy providers after a certain interval
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if (!providerStatus.config.isHealthy && providerStatus.config.lastErrorTime &&
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(now.getTime() - new Date(providerStatus.config.lastErrorTime).getTime() < this.healthCheckInterval)) {
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this._log('debug', `Skipping health check for ${providerConfig.uuid} (${providerType}). Last error too recent.`);
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continue;
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}
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try {
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// Perform actual health check based on provider type
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const healthResult = await this._checkProviderHealth(providerType, providerConfig);
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if (healthResult === null) {
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this._log('debug', `Health check for ${providerConfig.uuid} (${providerType}) skipped: Check not implemented.`);
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this.resetProviderCounters(providerType, providerConfig);
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continue;
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}
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if (healthResult.success) {
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if (!providerStatus.config.isHealthy) {
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// Provider was unhealthy but is now healthy
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// 恢复健康时不重置使用计数，保持原有值
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this.markProviderHealthy(providerType, providerConfig, true, healthResult.modelName);
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this._log('info', `Health check for ${providerConfig.uuid} (${providerType}): Marked Healthy (actual check)`);
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} else {
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// Provider was already healthy and still is
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// 只在初始化时重置使用计数
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this.markProviderHealthy(providerType, providerConfig, true, healthResult.modelName);
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this._log('debug', `Health check for ${providerConfig.uuid} (${providerType}): Still Healthy`);
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}
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} else {
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// Provider is not healthy
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this._log('warn', `Health check for ${providerConfig.uuid} (${providerType}) failed: ${healthResult.errorMessage || 'Provider is not responding correctly.'}`);
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this.markProviderUnhealthy(providerType, providerConfig, healthResult.errorMessage);
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// 更新健康检测时间和模型（即使失败也记录）
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providerStatus.config.lastHealthCheckTime = new Date().toISOString();
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if (healthResult.modelName) {
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providerStatus.config.lastHealthCheckModel = healthResult.modelName;
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}
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}
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} catch (error) {
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this._log('error', `Health check for ${providerConfig.uuid} (${providerType}) failed: ${error.message}`);
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// If a health check fails, mark it unhealthy, which will update error count and lastErrorTime
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this.markProviderUnhealthy(providerType, providerConfig, error.message);
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}
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}
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}
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}
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/**
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* 构建健康检查请求（返回多种格式用于重试）
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* @private
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* @returns {Array} 请求格式数组，按优先级排序
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*/
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_buildHealthCheckRequests(providerType, modelName) {
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const baseMessage = { role: 'user', content: 'Hi' };
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const requests = [];
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// Gemini 使用 contents 格式
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if (providerType.startsWith('gemini')) {
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requests.push({
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contents: [{
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role: 'user',
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parts: [{ text: baseMessage.content }]
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}]
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});
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return requests;
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}
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// Kiro OAuth 同时支持 messages 和 contents 格式
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if (providerType.startsWith('claude-kiro')) {
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// 优先使用 messages 格式
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requests.push({
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messages: [baseMessage],
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model: modelName,
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max_tokens: 1
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});
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// 备用 contents 格式
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requests.push({
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contents: [{
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role: 'user',
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parts: [{ text: baseMessage.content }]
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}],
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max_tokens: 1
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});
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return requests;
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}
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// OpenAI Custom Responses 使用特殊格式
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if (providerType === MODEL_PROVIDER.OPENAI_CUSTOM_RESPONSES) {
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requests.push({
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input: [baseMessage],
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model: modelName
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});
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return requests;
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}
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// 其他提供商（OpenAI、Claude、Qwen）使用标准 messages 格式
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requests.push({
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messages: [baseMessage],
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model: modelName
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});
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return requests;
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}
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/**
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* Performs an actual health check for a specific provider.
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* @param {string} providerType - The type of the provider.
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* @param {object} providerConfig - The configuration of the provider to check.
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* @param {boolean} forceCheck - If true, ignore checkHealth config and force the check.
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* @returns {Promise<{success: boolean, modelName: string, errorMessage: string}|null>} - Health check result object or null if check not implemented.
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*/
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async _checkProviderHealth(providerType, providerConfig, forceCheck = false) {
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// 确定健康检查使用的模型名称
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const modelName = providerConfig.checkModelName ||
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ProviderPoolManager.DEFAULT_HEALTH_CHECK_MODELS[providerType];
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// 如果未启用健康检查且不是强制检查，返回 null
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if (!providerConfig.checkHealth && !forceCheck) {
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return null;
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}
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if (!modelName) {
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this._log('warn', `Unknown provider type for health check: ${providerType}`);
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return { success: false, modelName: null, errorMessage: 'Unknown provider type for health check' };
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}
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// 使用内部服务适配器方式进行健康检查
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const proxyKeys = ['GEMINI', 'OPENAI', 'CLAUDE', 'QWEN', 'KIRO'];
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const tempConfig = {
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...providerConfig,
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MODEL_PROVIDER: providerType
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};
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proxyKeys.forEach(key => {
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const proxyKey = `USE_SYSTEM_PROXY_${key}`;
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if (this.globalConfig[proxyKey] !== undefined) {
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tempConfig[proxyKey] = this.globalConfig[proxyKey];
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}
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});
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const serviceAdapter = getServiceAdapter(tempConfig);
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// 获取所有可能的请求格式
|
||
const healthCheckRequests = this._buildHealthCheckRequests(providerType, modelName);
|
||
|
||
// 重试机制：尝试不同的请求格式
|
||
const maxRetries = healthCheckRequests.length;
|
||
let lastError = null;
|
||
|
||
for (let i = 0; i < maxRetries; i++) {
|
||
const healthCheckRequest = healthCheckRequests[i];
|
||
try {
|
||
this._log('debug', `Health check attempt ${i + 1}/${maxRetries} for ${modelName}: ${JSON.stringify(healthCheckRequest)}`);
|
||
await serviceAdapter.generateContent(modelName, healthCheckRequest);
|
||
return { success: true, modelName, errorMessage: null };
|
||
} catch (error) {
|
||
lastError = error;
|
||
this._log('debug', `Health check attempt ${i + 1} failed for ${providerType}: ${error.message}`);
|
||
// 继续尝试下一个格式
|
||
}
|
||
}
|
||
|
||
// 所有尝试都失败
|
||
this._log('error', `Health check failed for ${providerType} after ${maxRetries} attempts: ${lastError?.message}`);
|
||
return { success: false, modelName, errorMessage: lastError?.message || 'All health check attempts failed' };
|
||
}
|
||
|
||
/**
|
||
* 优化1: 添加防抖保存方法
|
||
* 延迟保存操作，避免频繁的文件 I/O
|
||
* @private
|
||
*/
|
||
_debouncedSave(providerType) {
|
||
// 将待保存的 providerType 添加到集合中
|
||
this.pendingSaves.add(providerType);
|
||
|
||
// 清除之前的定时器
|
||
if (this.saveTimer) {
|
||
clearTimeout(this.saveTimer);
|
||
}
|
||
|
||
// 设置新的定时器
|
||
this.saveTimer = setTimeout(() => {
|
||
this._flushPendingSaves();
|
||
}, this.saveDebounceTime);
|
||
}
|
||
|
||
/**
|
||
* 批量保存所有待保存的 providerType（优化为单次文件写入）
|
||
* @private
|
||
*/
|
||
async _flushPendingSaves() {
|
||
const typesToSave = Array.from(this.pendingSaves);
|
||
if (typesToSave.length === 0) return;
|
||
|
||
this.pendingSaves.clear();
|
||
this.saveTimer = null;
|
||
|
||
try {
|
||
const filePath = this.globalConfig.PROVIDER_POOLS_FILE_PATH || 'provider_pools.json';
|
||
let currentPools = {};
|
||
|
||
// 一次性读取文件
|
||
try {
|
||
const fileContent = await fs.promises.readFile(filePath, 'utf8');
|
||
currentPools = JSON.parse(fileContent);
|
||
} catch (readError) {
|
||
if (readError.code === 'ENOENT') {
|
||
this._log('info', 'provider_pools.json does not exist, creating new file.');
|
||
} else {
|
||
throw readError;
|
||
}
|
||
}
|
||
|
||
// 更新所有待保存的 providerType
|
||
for (const providerType of typesToSave) {
|
||
if (this.providerStatus[providerType]) {
|
||
currentPools[providerType] = this.providerStatus[providerType].map(p => {
|
||
// Convert Date objects to ISOString if they exist
|
||
const config = { ...p.config };
|
||
if (config.lastUsed instanceof Date) {
|
||
config.lastUsed = config.lastUsed.toISOString();
|
||
}
|
||
if (config.lastErrorTime instanceof Date) {
|
||
config.lastErrorTime = config.lastErrorTime.toISOString();
|
||
}
|
||
if (config.lastHealthCheckTime instanceof Date) {
|
||
config.lastHealthCheckTime = config.lastHealthCheckTime.toISOString();
|
||
}
|
||
return config;
|
||
});
|
||
} else {
|
||
this._log('warn', `Attempted to save unknown providerType: ${providerType}`);
|
||
}
|
||
}
|
||
|
||
// 一次性写入文件
|
||
await fs.promises.writeFile(filePath, JSON.stringify(currentPools, null, 2), 'utf8');
|
||
this._log('info', `provider_pools.json updated successfully for types: ${typesToSave.join(', ')}`);
|
||
} catch (error) {
|
||
this._log('error', `Failed to write provider_pools.json: ${error.message}`);
|
||
}
|
||
}
|
||
|
||
} |