第十一部分：高级配置安全与加密

11.1 量子安全加密配置

// security/quantum-safe-encryption.js
const { pqc } = require('oqs-node');
const crypto = require('crypto');

class QuantumSafeConfigManager {
  constructor() {
    this.algorithm = 'Kyber1024'; // 后量子加密算法
    this.keyPairs = new Map();
    this.encryptedConfigs = new Map();
  }

  async initialize() {
    // 生成后量子密钥对
    await this.generateKeyPairs();
    console.log('✅ 量子安全配置管理器初始化完成');
  }

  async generateKeyPairs() {
    try {
      // 生成 Kyber 密钥对
      const kem = new pqc.KEM(this.algorithm);
      const keyPair = kem.keypair();
      
      this.keyPairs.set('primary', {
        publicKey: keyPair.publicKey,
        privateKey: keyPair.privateKey,
        algorithm: this.algorithm
      });

      // 备份密钥使用不同的算法
      const backupKem = new pqc.KEM('Dilithium5');
      const backupKeyPair = backupKem.keypair();
      
      this.keyPairs.set('backup', {
        publicKey: backupKeyPair.publicKey,
        privateKey: backupKeyPair.privateKey,
        algorithm: 'Dilithium5'
      });

    } catch (error) {
      console.error('❌ 量子安全密钥对生成失败:', error);
      throw error;
    }
  }

  async encryptConfiguration(config, keyId = 'primary') {
    const keyPair = this.keyPairs.get(keyId);
    if (!keyPair) {
      throw new Error(`密钥对不存在: ${keyId}`);
    }

    try {
      const kem = new pqc.KEM(keyPair.algorithm);
      const configJson = JSON.stringify(config);
      
      // 使用量子安全加密
      const encryptionResult = kem.encrypt(Buffer.from(configJson), keyPair.publicKey);
      
      const encryptedData = {
        ciphertext: encryptionResult.ciphertext,
        sharedSecret: encryptionResult.sharedSecret,
        algorithm: keyPair.algorithm,
        keyId: keyId,
        timestamp: new Date().toISOString(),
        version: '1.0'
      };

      this.encryptedConfigs.set(this.generateConfigId(config), encryptedData);
      
      return encryptedData;
    } catch (error) {
      console.error('❌ 配置加密失败:', error);
      throw error;
    }
  }

  async decryptConfiguration(encryptedData) {
    try {
      const keyPair = this.keyPairs.get(encryptedData.keyId);
      if (!keyPair) {
        throw new Error(`解密密钥不存在: ${encryptedData.keyId}`);
      }

      const kem = new pqc.KEM(encryptedData.algorithm);
      const decrypted = kem.decrypt(
        encryptedData.ciphertext, 
        keyPair.privateKey
      );

      const config = JSON.parse(decrypted.toString());
      return config;
    } catch (error) {
      console.error('❌ 配置解密失败:', error);
      throw error;
    }
  }

  async rotateEncryptionKeys() {
    console.log('🔄 开始轮换量子安全加密密钥...');
    
    // 生成新密钥对
    const newKem = new pqc.KEM('Kyber1024');
    const newKeyPair = newKem.keypair();
    
    // 重新加密所有配置
    for (const [configId, encryptedData] of this.encryptedConfigs) {
      try {
        const config = await this.decryptConfiguration(encryptedData);
        const reencrypted = await this.encryptConfiguration(config, 'primary');
        
        this.encryptedConfigs.set(configId, reencrypted);
        console.log(`✅ 配置重新加密完成: ${configId}`);
      } catch (error) {
        console.error(`❌ 配置重新加密失败 ${configId}:`, error);
      }
    }

    // 更新密钥对
    this.keyPairs.set('primary', {
      publicKey: newKeyPair.publicKey,
      privateKey: newKeyPair.privateKey,
      algorithm: this.algorithm
    });

    console.log('✅ 量子安全加密密钥轮换完成');
  }

  generateConfigId(config) {
    const configString = JSON.stringify(config);
    return crypto.createHash('sha3-512').update(configString).digest('hex');
  }

  getEncryptionStatus() {
    return {
      totalConfigs: this.encryptedConfigs.size,
      algorithms: Array.from(new Set(
        Array.from(this.encryptedConfigs.values()).map(e => e.algorithm)
      )),
      keyPairs: Array.from(this.keyPairs.keys())
    };
  }
}

// 混合加密方案（量子安全 + 传统加密）
class HybridConfigEncryption {
  constructor() {
    this.quantumManager = new QuantumSafeConfigManager();
    this.aesKey = null;
  }

  async initialize() {
    await this.quantumManager.initialize();
    await this.generateAESKey();
  }

  async generateAESKey() {
    // 使用量子安全加密保护 AES 密钥
    this.aesKey = crypto.randomBytes(32); // 256位 AES 密钥
    
    const encryptedAESKey = await this.quantumManager.encryptConfiguration({
      key: this.aesKey.toString('base64'),
      timestamp: new Date().toISOString(),
      purpose: 'AES configuration encryption'
    });

    // 存储加密的 AES 密钥
    this.encryptedAESKey = encryptedAESKey;
  }

  async encryptConfigHybrid(config) {
    // 使用 AES 加密配置（性能更好）
    const cipher = crypto.createCipher('aes-256-gcm', this.aesKey);
    
    let encrypted = cipher.update(JSON.stringify(config), 'utf8', 'hex');
    encrypted += cipher.final('hex');
    
    const authTag = cipher.getAuthTag();
    
    return {
      encryptedData: encrypted,
      authTag: authTag.toString('hex'),
      iv: cipher.getIV().toString('hex'),
      quantumProtectedKey: this.encryptedAESKey,
      encryptionScheme: 'Hybrid-AES-Kyber'
    };
  }

  async decryptConfigHybrid(encryptedData) {
    // 首先解密 AES 密钥（如果需要）
    if (!this.aesKey) {
      const keyConfig = await this.quantumManager.decryptConfiguration(
        encryptedData.quantumProtectedKey
      );
      this.aesKey = Buffer.from(keyConfig.key, 'base64');
    }

    // 使用 AES 解密配置
    const decipher = crypto.createDecipher('aes-256-gcm', this.aesKey);
    decipher.setAuthTag(Buffer.from(encryptedData.authTag, 'hex'));
    decipher.setIV(Buffer.from(encryptedData.iv, 'hex'));
    
    let decrypted = decipher.update(encryptedData.encryptedData, 'hex', 'utf8');
    decrypted += decipher.final('utf8');
    
    return JSON.parse(decrypted);
  }
}

module.exports = {
  QuantumSafeConfigManager,
  HybridConfigEncryption
};

11.2 零知识证明配置验证

// security/zero-knowledge-config.js
const snarkjs = require('snarkjs');
const ffjavascript = require('ffjavascript');

class ZeroKnowledgeConfigVerifier {
  constructor() {
    this.circuits = new Map();
    this.provingKey = null;
    this.verifyingKey = null;
  }

  async initialize() {
    // 加载零知识证明电路
    await this.loadCircuits();
    console.log('✅ 零知识配置验证器初始化完成');
  }

  async loadCircuits() {
    // 加载配置验证电路
    const circuits = {
      'env_security': await this.compileCircuit('circuits/env_security.circom'),
      'secret_strength': await this.compileCircuit('circuits/secret_strength.circom'),
      'access_policy': await this.compileCircuit('circuits/access_policy.circom')
    };

    this.circuits = circuits;
  }

  async compileCircuit(circuitPath) {
    // 编译零知识证明电路
    // 这里简化实现，实际使用需要 circom 编译器
    return {
      path: circuitPath,
      compiled: true,
      timestamp: new Date().toISOString()
    };
  }

  async proveEnvironmentSecurity(envVars, witnessData) {
    const circuit = this.circuits.get('env_security');
    
    const input = {
      envVars: this.hashEnvVars(envVars),
      constraints: witnessData.constraints,
      publicHash: witnessData.publicHash
    };

    try {
      const { proof, publicSignals } = await snarkjs.groth16.fullProve(
        input,
        circuit.wasm,
        this.provingKey
      );

      return {
        proof,
        publicSignals,
        circuit: 'env_security',
        timestamp: new Date().toISOString()
      };
    } catch (error) {
      console.error('❌ 环境安全证明生成失败:', error);
      throw error;
    }
  }

  async verifyEnvironmentSecurity(proof, publicSignals) {
    try {
      const isValid = await snarkjs.groth16.verify(
        this.verifyingKey,
        publicSignals,
        proof
      );

      return {
        isValid,
        verifiedAt: new Date().toISOString(),
        publicSignals
      };
    } catch (error) {
      console.error('❌ 环境安全证明验证失败:', error);
      return { isValid: false, error: error.message };
    }
  }

  async proveSecretStrength(secret, constraints) {
    const circuit = this.circuits.get('secret_strength');
    
    const input = {
      secretHash: this.hashSecret(secret),
      minLength: constraints.minLength,
      requireSpecialChar: constraints.requireSpecialChar ? 1 : 0,
      requireNumbers: constraints.requireNumbers ? 1 : 0
    };

    const { proof, publicSignals } = await snarkjs.groth16.fullProve(
      input,
      circuit.wasm,
      this.provingKey
    );

    return {
      proof,
      publicSignals,
      circuit: 'secret_strength',
      timestamp: new Date().toISOString()
    };
  }

  hashEnvVars(envVars) {
    // 创建环境变量的默克尔树根哈希
    const sortedVars = Object.keys(envVars).sort();
    const leaves = sortedVars.map(key => 
      crypto.createHash('sha256').update(key + envVars[key]).digest('hex')
    );
    
    return this.buildMerkleTree(leaves).root;
  }

  hashSecret(secret) {
    return crypto.createHash('sha256').update(secret).digest('hex');
  }

  buildMerkleTree(leaves) {
    // 简化版默克尔树实现
    if (leaves.length === 1) return { root: leaves[0] };
    
    const nextLevel = [];
    for (let i = 0; i < leaves.length; i += 2) {
      const left = leaves[i];
      const right = leaves[i + 1] || left;
      const hash = crypto.createHash('sha256')
        .update(left + right)
        .digest('hex');
      nextLevel.push(hash);
    }
    
    return this.buildMerkleTree(nextLevel);
  }

  async generateAccessProof(user, config, policy) {
    const circuit = this.circuits.get('access_policy');
    
    const input = {
      userRole: this.hashUserRole(user.role),
      configSensitivity: config.sensitivityLevel,
      userPermissions: user.permissions,
      policyHash: this.hashPolicy(policy)
    };

    const { proof, publicSignals } = await snarkjs.groth16.fullProve(
      input,
      circuit.wasm,
      this.provingKey
    );

    return {
      proof,
      publicSignals,
      circuit: 'access_policy',
      timestamp: new Date().toISOString()
    };
  }

  hashUserRole(role) {
    return crypto.createHash('sha256').update(role).digest('hex');
  }

  hashPolicy(policy) {
    return crypto.createHash('sha256')
      .update(JSON.stringify(policy))
      .digest('hex');
  }
}

// 零知识配置访问控制
class ZKConfigAccessControl {
  constructor() {
    this.verifier = new ZeroKnowledgeConfigVerifier();
    this.accessProofs = new Map();
  }

  async initialize() {
    await this.verifier.initialize();
  }

  async requestConfigAccess(user, config, policy) {
    // 生成访问证明
    const accessProof = await this.verifier.generateAccessProof(user, config, policy);
    
    this.accessProofs.set(accessProof.publicSignals[0], {
      user: user.id,
      config: config.id,
      proof: accessProof,
      grantedAt: new Date().toISOString()
    });

    return accessProof;
  }

  async verifyConfigAccess(proof, publicSignals, config) {
    const verification = await this.verifier.verifyEnvironmentSecurity(proof, publicSignals);
    
    if (verification.isValid) {
      // 记录访问日志（不暴露用户身份）
      this.logAnonymousAccess(publicSignals[0], config.id);
      return { granted: true, anonymousId: publicSignals[0] };
    }
    
    return { granted: false, reason: '零知识证明验证失败' };
  }

  logAnonymousAccess(anonymousId, configId) {
    console.log(`🔐 匿名访问记录: ${anonymousId} -> ${configId}`);
    // 在实际应用中，这里会记录到审计日志
  }

  getAccessStatistics() {
    const proofs = Array.from(this.accessProofs.values());
    
    return {
      totalAccesses: proofs.length,
      uniqueUsers: new Set(proofs.map(p => p.user)).size,
      uniqueConfigs: new Set(proofs.map(p => p.config)).size,
      recentAccesses: proofs.filter(p => 
        new Date(p.grantedAt) > new Date(Date.now() - 24 * 60 * 60 * 1000)
      ).length
    };
  }
}

module.exports = {
  ZeroKnowledgeConfigVerifier,
  ZKConfigAccessControl
};

第十二部分：联邦学习配置优化

12.1 跨组织配置联邦学习

// ml/federated-config-optimizer.js
const tf = require('@tensorflow/tfjs-node');
const { FederatedLearning } = require('federated-learning');

class FederatedConfigOptimizer {
  constructor(options = {}) {
    this.options = {
      minClients: 3,
      rounds: 100,
      learningRate: 0.01,
      ...options
    };
    
    this.federated = new FederatedLearning({
      aggregation: 'fedavg',
      secureAggregation: true,
      differentialPrivacy: true
    });
    
    this.localModels = new Map();
    this.globalModel = null;
    this.participants = new Set();
  }

  async initialize() {
    // 初始化全局模型
    this.globalModel = this.createGlobalModel();
    
    // 加载预训练权重（如果有）
    await this.loadPretrainedWeights();
    
    console.log('✅ 联邦配置优化器初始化完成');
  }

  createGlobalModel() {
    const model = tf.sequential();
    
    model.add(tf.layers.dense({
      units: 128,
      activation: 'relu',
      inputShape: [15] // 配置特征维度
    }));
    
    model.add(tf.layers.dropout({ rate: 0.3 }));
    
    model.add(tf.layers.dense({
      units: 64,
      activation: 'relu'
    }));
    
    model.add(tf.layers.dense({
      units: 32,
      activation: 'relu'
    }));
    
    model.add(tf.layers.dense({
      units: 8, // 优化建议维度
      activation: 'linear'
    }));
    
    model.compile({
      optimizer: tf.train.adam(this.options.learningRate),
      loss: 'meanSquaredError',
      metrics: ['mae']
    });
    
    return model;
  }

  async registerParticipant(participantId, initialData = null) {
    this.participants.add(participantId);
    
    // 为参与者创建本地模型
    const localModel = this.createLocalModel();
    
    if (initialData) {
      await this.trainLocalModel(localModel, initialData);
    }
    
    this.localModels.set(participantId, {
      model: localModel,
      data: initialData || [],
      lastUpdate: new Date().toISOString()
    });
    
    console.log(`✅ 参与者注册成功: ${participantId}`);
    return localModel;
  }

  createLocalModel() {
    // 本地模型结构可以与全局模型相同
    return this.createGlobalModel();
  }

  async federatedTrainingRound() {
    if (this.participants.size < this.options.minClients) {
      console.log('⚠️ 参与者不足，跳过本轮联邦学习');
      return;
    }

    console.log(`🔄 开始联邦学习第 ${this.options.rounds} 轮训练`);
    
    // 选择参与者
    const selectedParticipants = this.selectParticipants();
    
    // 并行训练本地模型
    const localUpdates = await Promise.all(
      selectedParticipants.map(pid => 
        this.trainParticipantModel(pid)
      )
    );

    // 安全聚合更新
    const globalUpdate = await this.federated.aggregateUpdates(localUpdates);
    
    // 更新全局模型
    await this.applyGlobalUpdate(globalUpdate);
    
    // 分发更新后的模型
    await this.distributeGlobalModel();
    
    console.log('✅ 联邦学习轮次完成');
  }

  async trainParticipantModel(participantId) {
    const participant = this.localModels.get(participantId);
    if (!participant) {
      throw new Error(`参与者不存在: ${participantId}`);
    }

    // 使用本地数据训练
    const localData = participant.data;
    if (localData.length === 0) {
      console.log(`⚠️ 参与者 ${participantId} 无训练数据，跳过`);
      return null;
    }

    // 准备训练数据
    const { features, labels } = this.prepareTrainingData(localData);
    
    // 训练本地模型
    await participant.model.fit(features, labels, {
      epochs: 5,
      batchSize: 32,
      verbose: 0
    });

    // 获取模型更新（梯度）
    const gradients = await this.getModelGradients(participant.model);
    
    // 应用差分隐私
    const noisyGradients = this.applyDifferentialPrivacy(gradients);
    
    participant.lastUpdate = new Date().toISOString();
    
    return {
      participantId,
      gradients: noisyGradients,
      dataSize: localData.length,
      timestamp: participant.lastUpdate
    };
  }

  prepareTrainingData(localData) {
    const features = [];
    const labels = [];
    
    localData.forEach(item => {
      features.push(this.extractConfigFeatures(item.config));
      labels.push(this.encodeOptimizationTargets(item.performance));
    });
    
    return {
      features: tf.tensor2d(features),
      labels: tf.tensor2d(labels)
    };
  }

  extractConfigFeatures(config) {
    return [
      config.database.poolSize,
      config.cache.size,
      config.threads.count,
      config.memory.limit,
      config.timeout,
      config.rateLimit.max,
      config.keepAlive,
      config.compression.level,
      config.logging.level,
      config.monitoring.enabled ? 1 : 0,
      config.ssl.enabled ? 1 : 0,
      config.cluster.workers,
      config.session.timeout,
      config.upload.maxSize,
      config.security.level
    ];
  }

  encodeOptimizationTargets(performance) {
    return [
      performance.responseTime,
      performance.throughput,
      performance.errorRate,
      performance.memoryUsage,
      performance.cpuUsage,
      performance.availability,
      performance.latency,
      performance.successRate
    ];
  }

  async getModelGradients(model) {
    // 获取模型权重作为梯度（简化实现）
    const weights = model.getWeights();
    return weights.map(w => w.dataSync());
  }

  applyDifferentialPrivacy(gradients, epsilon = 1.0) {
    // 应用拉普拉斯噪声
    return gradients.map(gradient => {
      const noise = this.laplaceNoise(gradient.length, epsilon);
      return gradient.map((g, i) => g + noise[i]);
    });
  }

  laplaceNoise(size, epsilon) {
    const noise = [];
    for (let i = 0; i < size; i++) {
      const u = Math.random() - 0.5;
      noise.push(-Math.sign(u) * Math.log(1 - 2 * Math.abs(u)) / epsilon);
    }
    return noise;
  }

  async applyGlobalUpdate(globalUpdate) {
    if (!globalUpdate) return;
    
    const currentWeights = this.globalModel.getWeights();
    const updatedWeights = currentWeights.map((weight, i) => {
      const update = globalUpdate.gradients[i];
      return tf.tensor(update, weight.shape);
    });
    
    this.globalModel.setWeights(updatedWeights);
    
    // 清理张量
    currentWeights.forEach(w => w.dispose());
    updatedWeights.forEach(w => w.dispose());
  }

  async distributeGlobalModel() {
    const globalWeights = this.globalModel.getWeights();
    
    for (const [participantId, participant] of this.localModels) {
      participant.model.setWeights(globalWeights);
      console.log(`📤 全局模型分发给参与者: ${participantId}`);
    }
    
    // 清理张量
    globalWeights.forEach(w => w.dispose());
  }

  selectParticipants() {
    // 基于多种因素选择参与者
    const allParticipants = Array.from(this.participants);
    
    return allParticipants
      .filter(pid => {
        const participant = this.localModels.get(pid);
        return participant && participant.data.length > 10; // 至少有10个数据点
      })
      .sort(() => Math.random() - 0.5) // 随机排序
      .slice(0, Math.min(this.options.minClients, allParticipants.length));
  }

  async generateFederatedRecommendation(config, context) {
    const features = this.extractConfigFeatures(config);
    const featureTensor = tf.tensor2d([features]);
    
    const prediction = this.globalModel.predict(featureTensor);
    const recommendations = await prediction.data();
    
    featureTensor.dispose();
    prediction.dispose();
    
    return this.decodeRecommendations(recommendations, config, context);
  }

  decodeRecommendations(predictions, currentConfig, context) {
    const recommendations = [];
    
    // 解码预测结果为具体优化建议
    if (predictions[0] < currentConfig.database.poolSize * 0.9) {
      recommendations.push({
        parameter: 'database.poolSize',
        current: currentConfig.database.poolSize,
        suggested: Math.max(5, currentConfig.database.poolSize - 2),
        confidence: 0.85,
        impact: '减少连接池大小以降低内存使用',
        source: 'federated_learning'
      });
    }
    
    if (predictions[1] > currentConfig.cache.size * 1.1) {
      recommendations.push({
        parameter: 'cache.size',
        current: currentConfig.cache.size,
        suggested: Math.min(1024, currentConfig.cache.size * 1.2),
        confidence: 0.78,
        impact: '增加缓存大小以提高性能',
        source: 'federated_learning'
      });
    }
    
    return recommendations;
  }

  getFederatedStatistics() {
    return {
      totalParticipants: this.participants.size,
      activeParticipants: Array.from(this.participants).filter(pid => 
        this.localModels.get(pid)?.data.length > 0
      ).length,
      totalRounds: this.options.rounds,
      modelMetrics: this.getModelMetrics()
    };
  }

  getModelMetrics() {
    // 返回模型性能指标
    return {
      loss: 0.1, // 示例值
      accuracy: 0.85,
      lastUpdated: new Date().toISOString()
    };
  }

  async loadPretrainedWeights() {
    try {
      // 从持久化存储加载预训练权重
      // 这里简化实现
      console.log('📊 加载预训练权重完成');
    } catch (error) {
      console.warn('⚠️ 无法加载预训练权重，使用随机初始化');
    }
  }
}

// 联邦学习协调器
class FederatedCoordinator {
  constructor() {
    this.optimizer = new FederatedConfigOptimizer();
    this.trainingInterval = null;
    this.participantRegistry = new Map();
  }

  async startFederatedLearning() {
    await this.optimizer.initialize();
    
    // 每6小时进行一次联邦学习
    this.trainingInterval = setInterval(() => {
      this.optimizer.federatedTrainingRound();
    }, 6 * 60 * 60 * 1000);
    
    console.log('🚀 联邦学习协调器已启动');
  }

  stopFederatedLearning() {
    if (this.trainingInterval) {
      clearInterval(this.trainingInterval);
      console.log('🛑 联邦学习协调器已停止');
    }
  }

  registerOrganization(orgId, contactInfo, initialContribution = null) {
    this.participantRegistry.set(orgId, {
      contactInfo,
      initialContribution,
      registeredAt: new Date().toISOString(),
      status: 'active'
    });
    
    // 注册为联邦学习参与者
    return this.optimizer.registerParticipant(orgId, initialContribution);
  }

  async submitLocalUpdate(orgId, localData) {
    const participant = this.optimizer.localModels.get(orgId);
    if (!participant) {
      throw new Error(`组织未注册: ${orgId}`);
    }
    
    // 添加新数据
    participant.data.push(...localData);
    
    // 限制数据大小
    if (participant.data.length > 1000) {
      participant.data = participant.data.slice(-1000);
    }
    
    console.log(`📊 组织 ${orgId} 提交了 ${localData.length} 个数据点`);
    
    return {
      success: true,
      totalDataPoints: participant.data.length,
      timestamp: new Date().toISOString()
    };
  }

  getGlobalInsights() {
    const stats = this.optimizer.getFederatedStatistics();
    
    return {
      ...stats,
      participantDetails: Array.from(this.participantRegistry.entries()).map(([orgId, info]) => ({
        orgId,
        status: info.status,
        registeredAt: info.registeredAt,
        dataPoints: this.optimizer.localModels.get(orgId)?.data.length || 0
      }))
    };
  }

  async generateCrossOrganizationRecommendation(config, context) {
    return await this.optimizer.generateFederatedRecommendation(config, context);
  }
}

module.exports = {
  FederatedConfigOptimizer,
  FederatedCoordinator
};

第十三部分：自主运维配置系统

13.1 自愈配置管理系统

// autonomous/self-healing-config.js
const { EventEmitter } = require('events');

class SelfHealingConfigManager extends EventEmitter {
  constructor() {
    super();
    this.configStates = new Map();
    this.healthMonitors = new Map();
    this.recoveryStrategies = new Map();
    this.incidentHistory = [];
    this.learningEngine = new ConfigLearningEngine();
  }

  async initialize() {
    await this.learningEngine.initialize();
    this.setupHealthMonitoring();
    this.setupRecoveryStrategies();
    
    console.log('✅ 自愈配置管理系统初始化完成');
  }

  setupHealthMonitoring() {
    // 数据库连接监控
    this.healthMonitors.set('database', {
      check: this.checkDatabaseHealth.bind(this),
      interval: 30000, // 30秒
      threshold: 3 // 连续3次失败触发恢复
    });

    // 内存使用监控
    this.healthMonitors.set('memory', {
      check: this.checkMemoryHealth.bind(this),
      interval: 10000, // 10秒
      threshold: 2
    });

    // API 响应监控
    this.healthMonitors.set('api', {
      check: this.checkAPIHealth.bind(this),
      interval: 15000, // 15秒
      threshold: 3
    });

    // 启动所有监控器
    this.healthMonitors.forEach((monitor, key) => {
      this.startHealthMonitor(key, monitor);
    });
  }

  setupRecoveryStrategies() {
    // 数据库连接恢复策略
    this.recoveryStrategies.set('database_connection', {
      execute: this.recoverDatabaseConnection.bind(this),
      priority: 'high',
      timeout: 60000 // 60秒超时
    });

    // 内存泄漏恢复策略
    this.recoveryStrategies.set('memory_leak', {
      execute: this.recoverMemoryLeak.bind(this),
      priority: 'critical',
      timeout: 30000
    });

    // API 性能恢复策略
    this.recoveryStrategies.set('api_performance', {
      execute: this.recoverAPIPerformance.bind(this),
      priority: 'medium',
      timeout: 45000
    });

    // 配置错误恢复策略
    this.recoveryStrategies.set('config_error', {
      execute: this.recoverConfigError.bind(this),
      priority: 'high',
      timeout: 30000
    });
  }

  startHealthMonitor(name, monitor) {
    setInterval(async () => {
      try {
        const isHealthy = await monitor.check();
        
        this.updateHealthStatus(name, isHealthy);
        
        if (!isHealthy) {
          this.handleHealthDegradation(name);
        }
      } catch (error) {
        console.error(`❌ 健康检查失败 ${name}:`, error);
        this.updateHealthStatus(name, false);
      }
    }, monitor.interval);
  }

  async checkDatabaseHealth() {
    try {
      // 执行数据库健康检查
      const responseTime = await this.measureDatabaseResponse();
      const connectionCount = await this.getDatabaseConnections();
      
      return responseTime < 1000 && connectionCount < 100;
    } catch (error) {
      return false;
    }
  }

  async checkMemoryHealth() {
    const memoryUsage = process.memoryUsage();
    const usagePercent = memoryUsage.heapUsed / memoryUsage.heapTotal;
    
    return usagePercent < 0.8; // 内存使用率低于80%
  }

  async checkAPIHealth() {
    try {
      const response = await fetch('http://localhost:3000/health', {
        timeout: 5000
      });
      
      return response.status === 200;
    } catch (error) {
      return false;
    }
  }

  updateHealthStatus(component, isHealthy) {
    const currentState = this.configStates.get(component) || {
      healthy: true,
      failureCount: 0,
      lastCheck: new Date().toISOString()
    };
    
    if (isHealthy) {
      currentState.healthy = true;
      currentState.failureCount = 0;
      currentState.recoveredAt = new Date().toISOString();
    } else {
      currentState.healthy = false;
      currentState.failureCount++;
      currentState.lastFailure = new Date().toISOString();
    }
    
    currentState.lastCheck = new Date().toISOString();
    this.configStates.set(component, currentState);
    
    this.emit('health_status_changed', {
      component,
      isHealthy,
      failureCount: currentState.failureCount,
      timestamp: currentState.lastCheck
    });
  }

  handleHealthDegradation(component) {
    const state = this.configStates.get(component);
    const monitor = this.healthMonitors.get(component);
    
    if (state.failureCount >= monitor.threshold) {
      console.log(`🚨 组件健康度下降: ${component}, 失败次数: ${state.failureCount}`);
      
      // 触发自动恢复
      this.triggerAutoRecovery(component);
      
      // 记录事件
      this.recordIncident({
        type: 'health_degradation',
        component,
        severity: this.calculateSeverity(component),
        timestamp: new Date().toISOString(),
        failureCount: state.failureCount
      });
    }
  }

  async triggerAutoRecovery(component) {
    const recoveryKey = this.determineRecoveryStrategy(component);
    const strategy = this.recoveryStrategies.get(recoveryKey);
    
    if (!strategy) {
      console.error(`❌ 未找到恢复策略: ${recoveryKey}`);
      return;
    }
    
    console.log(`🔄 执行自动恢复: ${recoveryKey}`);
    
    try {
      const recoveryResult = await Promise.race([
        strategy.execute(),
        new Promise((_, reject) => 
          setTimeout(() => reject(new Error('恢复操作超时')), strategy.timeout)
        )
      ]);
      
      if (recoveryResult.success) {
        console.log(`✅ 自动恢复成功: ${recoveryKey}`);
        
        this.recordRecovery({
          component,
          strategy: recoveryKey,
          success: true,
          duration: recoveryResult.duration,
          timestamp: new Date().toISOString()
        });
        
        // 学习成功经验
        await this.learningEngine.recordSuccessfulRecovery(component, recoveryKey, recoveryResult);
      }
    } catch (error) {
      console.error(`❌ 自动恢复失败: ${recoveryKey}`, error);
      
      this.recordRecovery({
        component,
        strategy: recoveryKey,
        success: false,
        error: error.message,
        timestamp: new Date().toISOString()
      });
      
      // 升级到人工干预
      this.escalateToHuman(component, error);
    }
  }

  determineRecoveryStrategy(component) {
    // 基于组件类型和症状确定恢复策略
    const strategies = {
      'database': 'database_connection',
      'memory': 'memory_leak', 
      'api': 'api_performance'
    };
    
    return strategies[component] || 'config_error';
  }

  async recoverDatabaseConnection() {
    const startTime = Date.now();
    
    try {
      // 1. 尝试重启连接池
      await this.restartConnectionPool();
      
      // 2. 验证连接恢复
      const isHealthy = await this.checkDatabaseHealth();
      
      if (!isHealthy) {
        // 3. 回退到备用数据库
        await this.failoverToBackupDatabase();
      }
      
      return {
        success: true,
        duration: Date.now() - startTime,
        actions: ['restart_pool', 'failover_check']
      };
    } catch (error) {
      return {
        success: false,
        duration: Date.now() - startTime,
        error: error.message
      };
    }
  }

  async recoverMemoryLeak() {
    const startTime = Date.now();
    
    try {
      // 1. 强制垃圾回收
      if (global.gc) {
        global.gc();
      }
      
      // 2. 清理缓存
      await this.clearExpiredCaches();
      
      // 3. 重启有问题的服务
      await this.restartProblematicServices();
      
      return {
        success: true,
        duration: Date.now() - startTime,
        actions: ['gc', 'cache_clear', 'service_restart']
      };
    } catch (error) {
      return {
        success: false,
        duration: Date.now() - startTime,
        error: error.message
      };
    }
  }

  async recoverAPIPerformance() {
    const startTime = Date.now();
    
    try {
      // 1. 调整限流配置
      await this.adjustRateLimiting();
      
      // 2. 优化缓存策略
      await this.optimizeCaching();
      
      // 3. 扩展服务实例
      await this.scaleServiceInstances();
      
      return {
        success: true,
        duration: Date.now() - startTime,
        actions: ['adjust_rates', 'optimize_cache', 'scale_instances']
      };
    } catch (error) {
      return {
        success: false,
        duration: Date.now() - startTime,
        error: error.message
      };
    }
  }

  async recoverConfigError() {
    const startTime = Date.now();
    
    try {
      // 1. 回滚到上一个已知良好的配置
      await this.rollbackToStableConfig();
      
      // 2. 验证配置有效性
      await this.validateConfiguration();
      
      // 3. 重新加载配置
      await this.reloadConfiguration();
      
      return {
        success: true,
        duration: Date.now() - startTime,
        actions: ['config_rollback', 'validation', 'reload']
      };
    } catch (error) {
      return {
        success: false,
        duration: Date.now() - startTime,
        error: error.message
      };
    }
  }

  recordIncident(incident) {
    this.incidentHistory.push(incident);
    
    // 保持最近1000个事件
    if (this.incidentHistory.length > 1000) {
      this.incidentHistory = this.incidentHistory.slice(-1000);
    }
    
    this.emit('incident_recorded', incident);
  }

  recordRecovery(recovery) {
    this.incidentHistory.push({
      type: 'recovery_attempt',
      ...recovery
    });
    
    this.emit('recovery_recorded', recovery);
  }

  escalateToHuman(component, error) {
    const incident = {
      type: 'escalation',
      component,
      error: error.message,
      severity: 'critical',
      timestamp: new Date().toISOString(),
      requiresHumanIntervention: true
    };
    
    this.recordIncident(incident);
    
    // 发送警报通知
    this.sendAlert(incident);
    
    console.log(`🚨 升级到人工干预: ${component}`);
  }

  sendAlert(incident) {
    // 实现警报发送逻辑
    console.log(`📢 发送警报: ${incident.component} - ${incident.error}`);
  }

  calculateSeverity(component) {
    const severities = {
      'database': 'high',
      'memory': 'critical', 
      'api': 'medium'
    };
    
    return severities[component] || 'low';
  }

  getSystemHealth() {
    const components = Array.from(this.configStates.entries());
    
    const healthyCount = components.filter(([_, state]) => state.healthy).length;
    const totalCount = components.length;
    
    return {
      overallHealth: healthyCount / totalCount,
      components: components.map(([name, state]) => ({
        name,
        healthy: state.healthy,
        lastCheck: state.lastCheck,
        failureCount: state.failureCount
      })),
      recentIncidents: this.incidentHistory.slice(-10)
    };
  }

  async proactiveOptimization() {
    // 基于预测分析进行主动优化
    const predictions = await this.learningEngine.predictFutureIssues();
    
    for (const prediction of predictions) {
      if (prediction.probability > 0.7) {
        console.log(`🔮 预测到潜在问题: ${prediction.issue}, 进行主动优化`);
        await this.applyProactiveFix(prediction);
      }
    }
  }
}

// 配置学习引擎
class ConfigLearningEngine {
  constructor() {
    this.learningData = [];
    this.patterns = new Map();
  }

  async initialize() {
    // 加载历史学习数据
    await this.loadLearningData();
    console.log('✅ 配置学习引擎初始化完成');
  }

  async recordSuccessfulRecovery(component, strategy, result) {
    this.learningData.push({
      type: 'successful_recovery',
      component,
      strategy,
      result,
      timestamp: new Date().toISOString()
    });
    
    // 更新成功模式
    this.updateSuccessPatterns(component, strategy);
  }

  updateSuccessPatterns(component, strategy) {
    const patternKey = `${component}_${strategy}`;
    const current = this.patterns.get(patternKey) || { successes: 0, attempts: 0 };
    
    current.successes++;
    current.attempts++;
    current.successRate = current.successes / current.attempts;
    current.lastSuccess = new Date().toISOString();
    
    this.patterns.set(patternKey, current);
  }

  async predictFutureIssues() {
    // 基于历史数据预测未来可能的问题
    const predictions = [];
    
    // 分析模式识别潜在风险
    for (const [pattern, stats] of this.patterns) {
      if (stats.successRate < 0.5) {
        predictions.push({
          issue: `低效恢复策略: ${pattern}`,
          probability: 0.8,
          recommendation: '考虑替代恢复策略',
          component: pattern.split('_')[0]
        });
      }
    }
    
    // 基于时间模式预测
    const timeBasedPredictions = this.analyzeTemporalPatterns();
    predictions.push(...timeBasedPredictions);
    
    return predictions;
  }

  analyzeTemporalPatterns() {
    // 分析时间相关的模式
    const predictions = [];
    const now = new Date();
    const hour = now.getHours();
    
    // 示例：在高峰时段预测性能问题
    if (hour >= 9 && hour <= 18) {
      predictions.push({
        issue: '高峰时段性能下降',
        probability: 0.6,
        recommendation: '预先扩展资源',
        component: 'api'
      });
    }
    
    return predictions;
  }

  async loadLearningData() {
    // 从持久化存储加载学习数据
    try {
      // 模拟加载
      this.learningData = [];
      console.log('📊 学习数据加载完成');
    } catch (error) {
      console.warn('⚠️ 无法加载学习数据，使用空数据集');
    }
  }

  getLearningInsights() {
    return {
      totalLearningData: this.learningData.length,
      patterns: Array.from(this.patterns.entries()).map(([pattern, stats]) => ({
        pattern,
        successRate: stats.successRate,
        successes: stats.successes,
        attempts: stats.attempts
      })),
      confidenceLevel: this.calculateConfidenceLevel()
    };
  }

  calculateConfidenceLevel() {
    const totalAttempts = Array.from(this.patterns.values())
      .reduce((sum, stats) => sum + stats.attempts, 0);
    
    return Math.min(1, totalAttempts / 100); // 基于数据量计算置信度
  }
}

module.exports = {
  SelfHealingConfigManager,
  ConfigLearningEngine
};

第十四部分：未来架构与趋势

14.1 区块链配置审计

// blockchain/config-audit-chain.js
const { Web3 } = require('web3');
const { ethers } = require('ethers');

class BlockchainConfigAudit {
  constructor(options = {}) {
    this.options = {
      network: 'mainnet',
      contractAddress: null,
      ...options
    };
    
    this.web3 = new Web3(this.getProvider());
    this.contract = null;
    this.auditHistory = [];
  }

  async initialize() {
    // 部署或连接智能合约
    await this.setupSmartContract();
    console.log('✅ 区块链配置审计系统初始化完成');
  }

  getProvider() {
    switch (this.options.network) {
      case 'mainnet':
        return new Web3.providers.HttpProvider(process.env.ETH_MAINNET_URL);
      case 'goerli':
        return new Web3.providers.HttpProvider(process.env.ETH_GOERLI_URL);
      case 'local':
        return new Web3.providers.HttpProvider('http://localhost:8545');
      default:
        throw new Error(`不支持的区块链网络: ${this.options.network}`);
    }
  }

  async setupSmartContract() {
    if (this.options.contractAddress) {
      // 连接现有合约
      this.contract = new this.web3.eth.Contract(
        ConfigAuditABI,
        this.options.contractAddress
      );
    } else {
      // 部署新合约
      this.contract = await this.deployNewContract();
    }
  }

  async deployNewContract() {
    const accounts = await this.web3.eth.getAccounts();
    
    const contract = new this.web3.eth.Contract(ConfigAuditABI);
    
    const deployedContract = await contract.deploy({
      data: ConfigAuditBytecode,
      arguments: [] // 构造函数参数
    }).send({
      from: accounts[0],
      gas: 1500000,
      gasPrice: '30000000000'
    });
    
    console.log(`✅ 智能合约部署成功: ${deployedContract.options.address}`);
    return deployedContract;
  }

  async recordConfigChange(config, change, author, reason) {
    const configHash = this.hashConfiguration(config);
    const changeHash = this.hashChange(change);
    
    const tx = await this.contract.methods.recordConfigChange(
      configHash,
      changeHash,
      author,
      reason,
      Math.floor(Date.now() / 1000)
    ).send({
      from: author,
      gas: 100000
    });
    
    // 记录本地审计历史
    this.auditHistory.push({
      configHash,
      changeHash,
      author,
      reason,
      blockNumber: tx.blockNumber,
      transactionHash: tx.transactionHash,
      timestamp: new Date().toISOString()
    });
    
    console.log(`📝 配置变更已记录到区块链: ${tx.transactionHash}`);
    
    return {
      transactionHash: tx.transactionHash,
      blockNumber: tx.blockNumber,
      configHash,
      changeHash
    };
  }

  async verifyConfigIntegrity(config, expectedHash) {
    const currentHash = this.hashConfiguration(config);
    
    if (currentHash !== expectedHash) {
      throw new Error('配置完整性验证失败: 哈希不匹配');
    }
    
    // 在区块链上验证
    const isVerified = await this.contract.methods.verifyConfigHash(
      expectedHash
    ).call();
    
    return {
      verified: isVerified,
      currentHash,
      expectedHash,
      timestamp: new Date().toISOString()
    };
  }

  async getConfigHistory(configHash) {
    const events = await this.contract.getPastEvents('ConfigChanged', {
      filter: { configHash },
      fromBlock: 0,
      toBlock: 'latest'
    });
    
    return events.map(event => ({
      blockNumber: event.blockNumber,
      transactionHash: event.transactionHash,
      author: event.returnValues.author,
      reason: event.returnValues.reason,
      timestamp: new Date(parseInt(event.returnValues.timestamp) * 1000)
    }));
  }

  hashConfiguration(config) {
    const configString = JSON.stringify(config, Object.keys(config).sort());
    return this.web3.utils.sha3(configString);
  }

  hashChange(change) {
    const changeString = JSON.stringify(change);
    return this.web3.utils.sha3(changeString);
  }

  async generateAuditReport(startBlock, endBlock = 'latest') {
    const events = await this.contract.getPastEvents('ConfigChanged', {
      fromBlock: startBlock,
      toBlock: endBlock
    });
    
    const report = {
      period: {
        startBlock,
        endBlock
      },
      totalChanges: events.length,
      uniqueConfigs: new Set(events.map(e => e.returnValues.configHash)).size,
      uniqueAuthors: new Set(events.map(e => e.returnValues.author)).size,
      changesByAuthor: this.aggregateChangesByAuthor(events),
      changesOverTime: this.aggregateChangesOverTime(events),
      suspiciousActivities: await this.detectSuspiciousActivities(events)
    };
    
    return report;
  }

  aggregateChangesByAuthor(events) {
    const authorCounts = {};
    
    events.forEach(event => {
      const author = event.returnValues.author;
      authorCounts[author] = (authorCounts[author] || 0) + 1;
    });
    
    return authorCounts;
  }

  aggregateChangesOverTime(events) {
    const timeSlots = {};
    
    events.forEach(event => {
      const timestamp = new Date(parseInt(event.returnValues.timestamp) * 1000);
      const dateKey = timestamp.toISOString().split('T')[0]; // 按日期分组
      
      timeSlots[dateKey] = (timeSlots[dateKey] || 0) + 1;
    });
    
    return timeSlots;
  }

  async detectSuspiciousActivities(events) {
    const suspicious = [];
    
    // 检测频繁变更
    const authorChanges = this.aggregateChangesByAuthor(events);
    for (const [author, count] of Object.entries(authorChanges)) {
      if (count > 10) { // 单个作者变更超过10次
        suspicious.push({
          type: 'frequent_changes',
          author,
          changeCount: count,
          severity: 'medium'
        });
      }
    }
    
    // 检测异常时间变更
    for (const event of events) {
      const timestamp = new Date(parseInt(event.returnValues.timestamp) * 1000);
      const hour = timestamp.getHours();
      
      if (hour >= 22 || hour <= 6) { // 夜间变更
        suspicious.push({
          type: 'off_hours_change',
          author: event.returnValues.author,
          timestamp: timestamp.toISOString(),
          severity: 'low'
        });
      }
    }
    
    return suspicious;
  }

  getBlockchainInfo() {
    return {
      network: this.options.network,
      contractAddress: this.contract.options.address,
      currentBlock: this.web3.eth.blockNumber,
      gasPrice: this.web3.eth.gasPrice
    };
  }
}

// 智能合约 ABI (简化版)
const ConfigAuditABI = [
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "name": "configHash",
        "type": "bytes32"
      },
      {
        "indexed": false,
        "name": "author",
        "type": "address"
      },
      {
        "indexed": false,
        "name": "reason",
        "type": "string"
      },
      {
        "indexed": false,
        "name": "timestamp",
        "type": "uint256"
      }
    ],
    "name": "ConfigChanged",
    "type": "event"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "configHash",
        "type": "bytes32"
      },
      {
        "name": "changeHash",
        "type": "bytes32"
      },
      {
        "name": "author",
        "type": "address"
      },
      {
        "name": "reason",
        "type": "string"
      },
      {
        "name": "timestamp",
        "type": "uint256"
      }
    ],
    "name": "recordConfigChange",
    "outputs": [
      {
        "name": "",
        "type": "bool"
      }
    ],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": true,
    "inputs": [
      {
        "name": "configHash",
        "type": "bytes32"
      }
    ],
    "name": "verifyConfigHash",
    "outputs": [
      {
        "name": "",
        "type": "bool"
      }
    ],
    "payable": false,
    "stateMutability": "view",
    "type": "function"
  }
];

const ConfigAuditBytecode = "0x606060405260..."; // 编译后的字节码

module.exports = BlockchainConfigAudit;

总结：配置管理的未来愿景

通过这个完整的 Node.js 配置管理专家指南，我们涵盖了从基础到尖端的全系列技术：

🎯 技术演进全景

基础阶段 → 云原生阶段 → 智能阶段 → 自主阶段 → 未来阶段

🚀 核心技术矩阵

🔮 未来发展趋势

1. AI-Native 配置管理

   • 基于大语言模型的配置生成
   • 自然语言配置交互
   • 意图驱动的配置系统

2. 生物启发式配置

   • 免疫系统式自愈机制
   • 神经网络式配置优化
   • 进化算法式参数调优

3. 量子配置系统

   • 量子密钥分发配置保护
   • 量子机器学习优化
   • 抗量子计算安全

4. 元宇宙配置架构

   • 数字孪生配置模拟
   • 跨现实配置同步
   • 虚拟化配置环境

📊 实施路线图建议

💡 核心价值主张

1. 安全性：从基础加密到量子安全的全链路保护
2. 可靠性：自愈系统和混沌工程验证的韧性
3. 智能性：机器学习和联邦学习的持续优化
4. 可观测性：全生命周期的配置追踪和审计
5. 未来兼容：面向量子计算和AI革命的架构设计

配置管理已经从一个简单的技术实践演变为一个涵盖安全、AI、量子计算等多个前沿领域的综合性学科。掌握这些技术将使你能够在快速变化的技术 landscape 中保持领先，构建真正面向未来的现代化应用系统。

继续探索，推动技术的边界！ 🚀