@knath2000/codebase-indexing-mcp/dist/services/session-store.js

MCP server for codebase indexing with Voyage AI embeddings and Qdrant vector storage

import Database from 'better-sqlite3';
const DEFAULT_TTL_MS = 10 * 60 * 1000; // 10 minutes
export class SessionStore {
    constructor(dbPath = '/data/session-store.sqlite') {
        // If volume not mounted fallback to in-memory db (unit tests / dev)
        const path = process.env.NODE_ENV === 'test' ? ':memory:' : dbPath;
        this.db = new Database(path);
        this.db.pragma('journal_mode = WAL');
        this.db.exec(`
      CREATE TABLE IF NOT EXISTS sessions (
        session_id TEXT PRIMARY KEY,
        alloc_id   TEXT NOT NULL,
        created_at INTEGER NOT NULL,
        expires_at INTEGER NOT NULL
      );
      CREATE INDEX IF NOT EXISTS idx_sessions_expires ON sessions (expires_at);
    `);
    }
    upsert(sessionId, allocId, ttlMs = DEFAULT_TTL_MS) {
        const now = Date.now();
        const expires = now + ttlMs;
        const stmt = this.db.prepare(`
      INSERT INTO sessions (session_id, alloc_id, created_at, expires_at)
      VALUES (@sessionId,@allocId,@now,@expires)
      ON CONFLICT(session_id) DO UPDATE SET alloc_id=excluded.alloc_id, expires_at=excluded.expires_at;
    `);
        stmt.run({ sessionId, allocId, now, expires });
    }
    lookup(sessionId) {
        const row = this.db.prepare('SELECT alloc_id, expires_at FROM sessions WHERE session_id=?').get(sessionId);
        if (!row)
            return null;
        if (row.expires_at < Date.now()) {
            this.delete(sessionId);
            return null;
        }
        return row.alloc_id;
    }
    delete(sessionId) {
        this.db.prepare('DELETE FROM sessions WHERE session_id=?').run(sessionId);
    }
    cleanup() {
        this.db.prepare('DELETE FROM sessions WHERE expires_at < ?').run(Date.now());
    }
}
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