Política de Interoperabilidad en la Nube

# Configuración estándar para comunicación inter-cloud
communication_standards:
  protocols:
    primary: "HTTPS/TLS 1.3"
    messaging: "AMQP 1.0, Apache Kafka"
    api: "REST, GraphQL, gRPC"
  
  authentication:
    standard: "OAuth 2.0 + OpenID Connect"
    certificates: "X.509 mutual TLS"
    tokens: "JWT with RS256"
  
  data_formats:
    serialization: "JSON, Protocol Buffers"
    schema: "OpenAPI 3.0+, JSON Schema"
    compression: "gzip, brotli"

// Configuración de identidad federada multi-cloud
const federatedIdentityConfig = {
  providers: {
    aws: {
      type: 'SAML',
      endpoint: 'https://signin.aws.amazon.com/saml',
      certificate: process.env.AWS_SAML_CERT,
      roleArn: 'arn:aws:iam::account:role/DivisionCeroRole'
    },
    azure: {
      type: 'OpenID Connect',
      endpoint: 'https://login.microsoftonline.com/tenant/v2.0',
      clientId: process.env.AZURE_CLIENT_ID,
      tenantId: process.env.AZURE_TENANT_ID
    },
    gcp: {
      type: 'OAuth 2.0',
      endpoint: 'https://oauth2.googleapis.com/token',
      serviceAccount: process.env.GCP_SERVICE_ACCOUNT,
      scopes: ['https://www.googleapis.com/auth/cloud-platform']
    }
  },
  
  tokenExchange: {
    enabled: true,
    maxLifetime: 3600,      // 1 hora
    refreshThreshold: 300   // 5 minutos antes de expirar
  }
};

# Configuración Istio para comunicación inter-cloud
apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
  name: cross-cloud-service
spec:
  hosts:
  - external-service.cloud-b.com
  gateways:
  - cross-cloud-gateway
  http:
  - match:
    - headers:
        x-cloud-source:
          exact: "divisioncero-cloud-a"
    route:
    - destination:
        host: external-service.cloud-b.com
        port:
          number: 443
    timeout: 30s
    retries:
      attempts: 3
      perTryTimeout: 10s
    headers:
      request:
        add:
          x-trace-id: "%{DOWNSTREAM_REMOTE_ADDRESS}"
          x-request-timestamp: "%{START_TIME}"
---
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: cross-cloud-mtls
spec:
  mtls:
    mode: STRICT

const CircuitBreaker = require('opossum');

// Configuración de circuit breaker para servicios cloud
const cloudServiceBreakers = {
  aws: new CircuitBreaker(callAWSService, {
    timeout: 5000,
    errorThresholdPercentage: 50,
    resetTimeout: 30000,
    name: 'aws-service-breaker'
  }),
  
  azure: new CircuitBreaker(callAzureService, {
    timeout: 5000,
    errorThresholdPercentage: 50,
    resetTimeout: 30000,
    name: 'azure-service-breaker'
  }),
  
  gcp: new CircuitBreaker(callGCPService, {
    timeout: 5000,
    errorThresholdPercentage: 50,
    resetTimeout: 30000,
    name: 'gcp-service-breaker'
  })
};

// Fallback a proveedor alternativo
cloudServiceBreakers.aws.fallback((req) => {
  logger.warn('AWS service unavailable, falling back to Azure');
  return cloudServiceBreakers.azure.fire(req);
});

// Monitoreo de estado de circuit breakers
Object.values(cloudServiceBreakers).forEach(breaker => {
  breaker.on('open', () => {
    metrics.increment('circuit_breaker_open', {
      service: breaker.name
    });
  });
  
  breaker.on('close', () => {
    metrics.increment('circuit_breaker_close', {
      service: breaker.name
    });
  });
});

// Estrategia de replicación de datos entre nubes
class MultiCloudDataSync {
  constructor() {
    this.providers = {
      primary: new AWSDataProvider(),
      secondary: new AzureDataProvider(),
      backup: new GCPDataProvider()
    };
  }
  
  async syncData(data, options = {}) {
    const syncStrategy = options.strategy || 'eventual-consistency';
    const results = {};
    
    try {
      // Escritura en proveedor primario
      results.primary = await this.providers.primary.write(data);
      
      // Replicación asíncrona a proveedores secundarios
      const replicationPromises = [];
      
      if (syncStrategy === 'strong-consistency') {
        // Sincronización síncrona para consistencia fuerte
        results.secondary = await this.providers.secondary.write(data);
        results.backup = await this.providers.backup.write(data);
      } else {
        // Replicación asíncrona para eventual consistency
        replicationPromises.push(
          this.providers.secondary.write(data)
            .catch(err => this.handleReplicationError(err, 'secondary')),
          this.providers.backup.write(data)
            .catch(err => this.handleReplicationError(err, 'backup'))
        );
        
        // No esperar por replicación asíncrona
        Promise.allSettled(replicationPromises);
      }
      
      return results;
    } catch (error) {
      await this.handleWriteFailure(error, data);
      throw error;
    }
  }
  
  async handleWriteFailure(error, data) {
    // Intentar escritura en proveedor de respaldo
    try {
      await this.providers.secondary.write(data);
      logger.warn('Primary cloud failed, data written to secondary', {
        error: error.message,
        dataId: data.id
      });
    } catch (secondaryError) {
      logger.error('Multiple cloud providers failed', {
        primaryError: error.message,
        secondaryError: secondaryError.message,
        dataId: data.id
      });
    }
  }
}

# Configuración de backup distribuido
backup_strategy:
  frequency:
    critical_data: "every_hour"
    important_data: "every_6_hours"
    standard_data: "daily"
  
  locations:
    primary_backup:
      provider: "aws"
      region: "us-east-1"
      storage_class: "GLACIER"
    
    secondary_backup:
      provider: "azure"
      region: "eastus"
      storage_tier: "cool"
    
    offsite_backup:
      provider: "gcp"
      region: "us-central1"
      storage_class: "COLDLINE"
  
  encryption:
    algorithm: "AES-256-GCM"
    key_management: "multi_cloud_kms"
    key_rotation: "quarterly"
  
  retention:
    daily: "30_days"
    weekly: "12_weeks"
    monthly: "12_months"
    yearly: "7_years"

// Configuración de OpenTelemetry para trazas distribuidas
const { NodeSDK } = require('@opentelemetry/sdk-node');
const { Resource } = require('@opentelemetry/resources');
const { SemanticResourceAttributes } = require('@opentelemetry/semantic-conventions');

const sdk = new NodeSDK({
  resource: new Resource({
    [SemanticResourceAttributes.SERVICE_NAME]: 'divisioncero-multicloud',
    [SemanticResourceAttributes.SERVICE_VERSION]: process.env.SERVICE_VERSION,
    [SemanticResourceAttributes.CLOUD_PROVIDER]: process.env.CLOUD_PROVIDER
  }),
  
  instrumentations: [
    // Auto-instrumentación para HTTP, AWS SDK, etc.
    getNodeAutoInstrumentations({
      '@opentelemetry/instrumentation-aws-sdk': {
        enabled: true,
        suppressInternalInstrumentation: true
      },
      '@opentelemetry/instrumentation-http': {
        enabled: true,
        requestHook: (span, request) => {
          span.setAttributes({
            'http.client_ip': request.connection.remoteAddress,
            'cloud.target': extractCloudTarget(request.url)
          });
        }
      }
    })
  ],
  
  traceExporter: new ConsoleSpanExporter(),
  metricReader: new PrometheusRegistry()
});

// Función para extraer proveedor cloud del destino
function extractCloudTarget(url) {
  if (url.includes('amazonaws.com')) return 'aws';
  if (url.includes('azure.com')) return 'azure';
  if (url.includes('googleapis.com')) return 'gcp';
  return 'unknown';
}

sdk.start();

// Métricas estandarizadas para monitoreo multi-cloud
const metrics = {
  // Latencia entre nubes
  crossCloudLatency: new prometheus.Histogram({
    name: 'cross_cloud_request_duration_seconds',
    help: 'Duration of cross-cloud requests in seconds',
    labelNames: ['source_cloud', 'target_cloud', 'service', 'operation'],
    buckets: [0.1, 0.5, 1, 2, 5, 10]
  }),
  
  // Disponibilidad por proveedor
  cloudAvailability: new prometheus.Gauge({
    name: 'cloud_provider_availability',
    help: 'Availability of cloud providers (0-1)',
    labelNames: ['provider', 'region', 'service']
  }),
  
  // Costo por operación
  operationCost: new prometheus.Counter({
    name: 'cloud_operation_cost_total',
    help: 'Total cost of cloud operations',
    labelNames: ['provider', 'service', 'operation', 'region']
  }),
  
  // Tráfico inter-cloud
  crossCloudTraffic: new prometheus.Counter({
    name: 'cross_cloud_traffic_bytes_total',
    help: 'Total bytes transferred between clouds',
    labelNames: ['source_cloud', 'target_cloud', 'direction']
  })
};

// Middleware para capturar métricas automáticamente
function cloudMetricsMiddleware(req, res, next) {
  const start = Date.now();
  const sourceCloud = req.headers['x-source-cloud'] || 'unknown';
  const targetCloud = extractTargetCloud(req.url);
  
  res.on('finish', () => {
    const duration = (Date.now() - start) / 1000;
    
    metrics.crossCloudLatency
      .labels(sourceCloud, targetCloud, req.path, req.method)
      .observe(duration);
      
    if (sourceCloud !== targetCloud) {
      metrics.crossCloudTraffic
        .labels(sourceCloud, targetCloud, 'egress')
        .inc(req.get('content-length') || 0);
    }
  });
  
  next();
}

# Configuración usando Kubernetes ConfigMaps multi-cluster
apiVersion: v1
kind: ConfigMap
metadata:
  name: multi-cloud-config
  namespace: divisioncero
data:
  cloud-endpoints.yaml: |
    endpoints:
      aws:
        primary: "https://api-us-east-1.amazonaws.com"
        backup: "https://api-us-west-2.amazonaws.com"
        auth_method: "iam_role"
      
      azure:
        primary: "https://api-eastus.azure.com"
        backup: "https://api-westus.azure.com"
        auth_method: "managed_identity"
      
      gcp:
        primary: "https://api-us-central1.googleapis.com"
        backup: "https://api-us-west1.googleapis.com"
        auth_method: "service_account"
  
  failover-strategy.yaml: |
    strategy:
      primary_cloud: "aws"
      secondary_cloud: "azure"
      tertiary_cloud: "gcp"
      
      health_check_interval: "30s"
      failover_threshold: "3_consecutive_failures"
      recovery_threshold: "5_consecutive_successes"
      
      data_consistency: "eventual"
      max_failover_time: "60s"

// Implementación de secret management multi-cloud
class MultiCloudSecretManager {
  constructor() {
    this.providers = {
      aws: new AWS.SecretsManager({region: 'us-east-1'}),
      azure: new KeyVaultClient(credentials, 'https://vault.vault.azure.net/'),
      gcp: new SecretManagerServiceClient()
    };
  }
  
  async getSecret(secretName, preferredCloud = 'aws') {
    const cloudOrder = this.getCloudPriority(preferredCloud);
    
    for (const cloud of cloudOrder) {
      try {
        const secret = await this.fetchFromCloud(cloud, secretName);
        
        // Cache en otros proveedores para redundancia
        this.cacheSecretInOtherClouds(secretName, secret, cloud);
        
        return secret;
      } catch (error) {
        logger.warn(`Failed to fetch secret from ${cloud}`, {
          secretName,
          error: error.message
        });
        
        // Continúa con el siguiente proveedor
        continue;
      }
    }
    
    throw new Error(`Secret ${secretName} not available in any cloud provider`);
  }
  
  async syncSecretAcrossClouds(secretName, secretValue) {
    const results = {};
    const promises = [];
    
    for (const [cloud, provider] of Object.entries(this.providers)) {
      promises.push(
        this.storeSecretInCloud(cloud, secretName, secretValue)
          .then(result => results[cloud] = { success: true, result })
          .catch(error => results[cloud] = { success: false, error: error.message })
      );
    }
    
    await Promise.allSettled(promises);
    
    // Verificar que al menos 2 nubes tengan el secreto
    const successCount = Object.values(results).filter(r => r.success).length;
    if (successCount < 2) {
      throw new Error('Failed to store secret in minimum required clouds');
    }
    
    return results;
  }
}