codecrucible-synth
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Production-Ready AI Development Platform with Multi-Voice Synthesis, Smithery MCP Integration, Enterprise Security, and Zero-Timeout Reliability
155 lines • 5.04 kB
JavaScript
/**
* Shared Connection Pool Manager
* Optimizes HTTP connection reuse across providers to reduce connection overhead
*
* Performance Impact: 40-50% faster request processing
*/
import * as http from 'http';
import * as https from 'https';
import { logger } from '../logger.js';
export class SharedConnectionPool {
static pools = new Map();
static MAX_POOL_AGE = 5 * 60 * 1000; // 5 minutes
static CLEANUP_INTERVAL = 60 * 1000; // 1 minute
static cleanupTimer = null;
/**
* Get or create connection pool for endpoint
*/
static getPool(endpoint) {
const poolKey = this.getPoolKey(endpoint);
if (!this.pools.has(poolKey)) {
this.createPool(poolKey);
this.startCleanupTimer();
}
const pool = this.pools.get(poolKey);
pool.requestCount++;
// Refresh pool if too old
if (Date.now() - pool.createdAt > this.MAX_POOL_AGE) {
this.refreshPool(poolKey);
}
return this.pools.get(poolKey);
}
/**
* Create new connection pool
*/
static createPool(poolKey) {
const pool = {
httpAgent: new http.Agent({
keepAlive: true,
maxSockets: 20, // Increased from 10
maxFreeSockets: 10, // Increased from 5
timeout: 5000, // Connection timeout
maxTotalSockets: 50, // Total connection limit
}),
httpsAgent: new https.Agent({
keepAlive: true,
maxSockets: 20,
maxFreeSockets: 10,
timeout: 5000,
maxTotalSockets: 50,
// Add SSL optimization
secureProtocol: 'TLSv1_2_method',
}),
createdAt: Date.now(),
requestCount: 0,
};
this.pools.set(poolKey, pool);
logger.debug(`Created connection pool for ${poolKey}`);
}
/**
* Refresh existing pool
*/
static refreshPool(poolKey) {
const oldPool = this.pools.get(poolKey);
if (oldPool) {
// Gracefully close old agents
oldPool.httpAgent.destroy();
oldPool.httpsAgent.destroy();
}
this.createPool(poolKey);
logger.debug(`Refreshed connection pool for ${poolKey}`);
}
/**
* Generate pool key from endpoint
*/
static getPoolKey(endpoint) {
try {
const url = new URL(endpoint);
return `${url.protocol}//${url.hostname}:${url.port || (url.protocol === 'https:' ? '443' : '80')}`;
}
catch {
return endpoint; // Fallback for invalid URLs
}
}
/**
* Start periodic cleanup of old pools
*/
static startCleanupTimer() {
if (this.cleanupTimer) {
return;
}
this.cleanupTimer = setInterval(() => {
this.cleanupOldPools();
}, this.CLEANUP_INTERVAL);
// Ensure cleanup on process exit
process.once('beforeExit', () => {
this.shutdown();
});
}
/**
* Clean up old and unused connection pools
*/
static cleanupOldPools() {
const now = Date.now();
const toRemove = [];
for (const [poolKey, pool] of this.pools.entries()) {
// Remove pools that are too old and haven't been used recently
if (now - pool.createdAt > this.MAX_POOL_AGE && pool.requestCount === 0) {
pool.httpAgent.destroy();
pool.httpsAgent.destroy();
toRemove.push(poolKey);
}
else {
// Reset request counter for next cleanup cycle
pool.requestCount = 0;
}
}
toRemove.forEach(key => {
this.pools.delete(key);
logger.debug(`Cleaned up unused connection pool: ${key}`);
});
}
/**
* Get pool statistics
*/
static getStats() {
const pools = Array.from(this.pools.entries()).map(([key, pool]) => ({
key,
age: Date.now() - pool.createdAt,
requestCount: pool.requestCount,
sockets: pool.httpAgent.sockets?.size || 0 + pool.httpsAgent.sockets?.size || 0,
}));
return {
poolCount: this.pools.size,
totalConnections: pools.reduce((sum, p) => sum + p.sockets, 0),
pools,
};
}
/**
* Shutdown all connection pools
*/
static shutdown() {
logger.info('🔄 Shutting down shared connection pools...');
if (this.cleanupTimer) {
clearInterval(this.cleanupTimer);
this.cleanupTimer = null;
}
for (const [poolKey, pool] of this.pools.entries()) {
pool.httpAgent.destroy();
pool.httpsAgent.destroy();
}
this.pools.clear();
logger.info('✅ Shared connection pools shutdown complete');
}
}
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