/**
* ES 8.x Adapter - Handle ES 8 specific features and optimizations
*/
export class ES8Adapter {
/**
* Normalize cat.indices response for ES 8.x
* ES 8.x uses standard format, already optimal
*/
static normalizeCatIndices(response: any[] | any): any[] {
// Handle both array and object responses
const indices = Array.isArray(response) ? response : (response.body || []);
// ES 8.x uses standard format
return indices.map((index: any) => ({
...index,
'docs.count': index['docs.count'] || '0',
'store.size': index['store.size'] || '0b',
'pri.store.size': index['pri.store.size'] || '0b',
}));
}
/**
* Normalize mappings response for ES 8.x
* ES 8.x uses standard format (no types)
*/
static normalizeMappings(response: any): any {
// ES 8.x format is already standard
return response;
}
/**
* Prepare search request for ES 8.x
*/
static prepareSearchRequest(params: any): any {
// ES 8.x doesn't support 'type' parameter
const prepared = { ...params };
if (prepared.type) {
delete prepared.type;
}
return prepared;
}
/**
* Normalize search response for ES 8.x
*/
static normalizeSearchResponse(response: any): any {
// ES 8.x response is standard
return response;
}
/**
* Get ES 8 specific features
*/
static getNewFeatures(version: { major: number; minor: number }): string[] {
const features: string[] = [];
// ES 8.0+
features.push('Security enabled by default (authentication required)');
features.push('Improved vector search capabilities');
features.push('Better performance and resource efficiency');
// ES 8.2+
if (version.minor >= 2) {
features.push('Approximate k-NN search improvements');
features.push('Synthetic _source field');
}
// ES 8.3+
if (version.minor >= 3) {
features.push('TSDB (Time Series Data Stream) optimizations');
features.push('Downsampling for time-series data');
}
// ES 8.5+
if (version.minor >= 5) {
features.push('Semantic search with ELSER model');
features.push('Improved aggregations performance');
}
// ES 8.8+
if (version.minor >= 8) {
features.push('Vector search GA (Generally Available)');
features.push('Inference API for ML models');
}
// ES 8.11+
if (version.minor >= 11) {
features.push('Semantic text field type');
features.push('Improved semantic search capabilities');
}
// ES 8.12+
if (version.minor >= 12) {
features.push('Query rules for semantic search ranking');
features.push('Retrieval-augmented generation (RAG) support');
}
return features;
}
/**
* Get compatibility warnings for ES 8.x
*/
static getCompatibilityWarnings(version: { major: number; minor: number }): string[] {
const warnings: string[] = [];
// Security warning
warnings.push('ES 8.x requires authentication by default (security enabled)');
// Deprecation warnings
if (version.minor < 15) {
warnings.push('Some older 8.x features may be deprecated - check release notes');
}
// Type removal reminder
warnings.push('Mapping types completely removed (already gone in ES 7)');
return warnings;
}
/**
* Get ES 8 specific recommendations
*/
static getRecommendations(version: { major: number; minor: number }): string[] {
const recommendations: string[] = [];
// General recommendations
recommendations.push('ES 8.x is the current LTS version - recommended for production');
recommendations.push('Security is enabled by default - ensure proper authentication setup');
// Version-specific recommendations
if (version.minor < 10) {
recommendations.push('Consider upgrading to ES 8.10+ for latest performance improvements');
}
if (version.minor >= 8) {
recommendations.push('Explore vector search for semantic search and RAG use cases');
recommendations.push('Use ELSER for zero-shot semantic search');
}
if (version.minor >= 3) {
recommendations.push('Consider TSDB mode for time-series data workloads');
recommendations.push('Use downsampling for long-term time-series data retention');
}
// ML and AI recommendations
if (version.minor >= 5) {
recommendations.push('Leverage semantic search capabilities for better relevance');
recommendations.push('Explore machine learning features for advanced use cases');
}
// Performance recommendations
recommendations.push('Use Data Streams for time-series data management');
recommendations.push('Implement ILM policies for automated data lifecycle');
recommendations.push('Monitor cluster health and performance regularly');
return recommendations;
}
/**
* Check if ES 9 migration should be considered
*/
static shouldConsiderES9Migration(version: { major: number; minor: number }): boolean {
// If ES 9 is available and user is on older ES 8.x
return version.minor < 15;
}
/**
* Get ES 8 → ES 9 migration benefits
*/
static getES9MigrationBenefits(): string[] {
return [
'ES 9.x: Latest features and improvements',
'ES 9.x: Enhanced performance and efficiency',
'ES 9.x: Improved security capabilities',
'ES 9.x: Better AI/ML integration',
'ES 9.x: Advanced vector search optimizations',
'ES 9.x: Long-term support and updates',
];
}
/**
* Get breaking changes from ES 7 → ES 8
*/
static getBreakingChangesFromES7(): string[] {
return [
'Security enabled by default (requires configuration)',
'Some REST API endpoints changed or removed',
'Type parameter completely removed',
'Default shard count changed to 1 (was 5 in older versions)',
'Some deprecated features removed',
'Node roles configuration changes',
];
}
}
