phase-9: domain-driven architecture complete
- Restructured server layer with 5 domains: shared, screener, portfolio, calls, finance - Migrated 58 TypeScript files to domain-driven structure - Updated CLAUDE.md with new architecture documentation - Added .gitignore rules for .md files (except CLAUDE.md) - Removed unused CatalystAnalyst import from app.ts - Fixed lint errors: removed unused imports, fixed regex escape, added console suppressions - Verified no sensitive data in git history - Server code compiles cleanly with TypeScript strict mode
This commit is contained in:
Sai Kiran Vella
committed by
saikiranvella
saikiranvella
parent
c7e39c3e4e
commit
c388b6d83c
@@ -0,0 +1,196 @@
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/**
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* DatabaseConnection — High-level database abstraction.
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*
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* Wraps better-sqlite3 with:
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* - QueryBuilder for type-safe, injection-proof queries
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* - QueryAudit for logging and compliance
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* - Statement caching for performance
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* - Transaction support
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*
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* Usage:
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* const db = new DatabaseConnection(betterSqlite3Db, options);
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* const qb = new QueryBuilder('holdings').select(['ticker', 'shares']).where('type = ?', ['stock']);
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* const rows = db.all(qb);
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* const row = db.get(qb);
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* db.run(qb);
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*/
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import type BetterSqlite3 from 'better-sqlite3';
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import type { DatabaseOptions } from '../types/index';
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import { AuditAction } from '../types/index';
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import { QueryBuilder } from '../utils/QueryBuilder';
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import { QueryAudit } from './QueryAudit';
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/**
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* DatabaseConnection — Safe, auditable, performant SQLite wrapper.
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*/
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export class DatabaseConnection {
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private db: BetterSqlite3.Database;
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private audit: QueryAudit;
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private logSlowQueries: number;
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private statementCache = new Map<string, BetterSqlite3.Statement>();
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constructor(db: BetterSqlite3.Database, options: DatabaseOptions = {}) {
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this.db = db;
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this.audit = options.audit ?? new QueryAudit();
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this.logSlowQueries = options.logSlowQueries ?? 100; // 100ms default
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}
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/**
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* Execute a SELECT query and return all rows.
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* Logs the query to the audit trail.
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*/
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all<T = Record<string, unknown>>(qb: QueryBuilder): T[] {
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const sql = qb.sql;
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const params = qb.queryParams;
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const startMs = performance.now();
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try {
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const stmt = this.getOrCacheStatement(sql);
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const rows = stmt.all(...params) as T[];
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const durationMs = performance.now() - startMs;
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this.audit.log(sql, params, AuditAction.READ, durationMs, rows.length);
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this.logIfSlow(sql, durationMs);
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return rows;
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} catch (err) {
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const durationMs = performance.now() - startMs;
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const errorMsg = err instanceof Error ? err.message : String(err);
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this.audit.log(sql, params, AuditAction.READ, durationMs, undefined, errorMsg);
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throw err;
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}
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}
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/**
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* Execute a SELECT query and return the first row only.
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* Returns null if no rows match.
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* Logs the query to the audit trail.
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*/
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get<T = Record<string, unknown>>(qb: QueryBuilder): T | null {
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const sql = qb.sql;
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const params = qb.queryParams;
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const startMs = performance.now();
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try {
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const stmt = this.getOrCacheStatement(sql);
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const row = stmt.get(...params) as T | undefined;
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const durationMs = performance.now() - startMs;
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this.audit.log(sql, params, AuditAction.READ, durationMs, row ? 1 : 0);
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this.logIfSlow(sql, durationMs);
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return row ?? null;
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} catch (err) {
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const durationMs = performance.now() - startMs;
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const errorMsg = err instanceof Error ? err.message : String(err);
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this.audit.log(sql, params, AuditAction.READ, durationMs, undefined, errorMsg);
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throw err;
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}
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}
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/**
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* Execute an INSERT, UPDATE, or DELETE query.
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* Returns the number of rows affected.
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* Logs the query to the audit trail.
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*/
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run(qb: QueryBuilder): number {
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const sql = qb.sql;
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const params = qb.queryParams;
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const startMs = performance.now();
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// Determine audit action from SQL
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const sqlUpper = sql.toUpperCase().trim();
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const action = sqlUpper.startsWith('DELETE')
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? AuditAction.DELETE
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: sqlUpper.startsWith('INSERT')
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? AuditAction.WRITE
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: AuditAction.WRITE;
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try {
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const stmt = this.getOrCacheStatement(sql);
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const result = stmt.run(...params);
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const durationMs = performance.now() - startMs;
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this.audit.log(sql, params, action, durationMs, result.changes);
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this.logIfSlow(sql, durationMs);
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return result.changes;
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} catch (err) {
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const durationMs = performance.now() - startMs;
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const errorMsg = err instanceof Error ? err.message : String(err);
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this.audit.log(sql, params, action, durationMs, 0, errorMsg);
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throw err;
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}
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}
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/**
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* Execute a transaction — multiple queries as an atomic unit.
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* All queries must succeed, or all are rolled back.
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*
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* Usage:
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* db.transaction(() => {
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* db.run(qb1);
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* db.run(qb2);
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* });
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*/
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transaction<T>(fn: () => T): T {
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const txn = this.db.transaction(fn);
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return txn();
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}
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/**
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* Get the raw better-sqlite3 Db instance (for advanced use only).
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* Prefer the DatabaseConnection methods.
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*/
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raw(): BetterSqlite3.Database {
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return this.db;
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}
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/**
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* Get the audit trail instance.
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*/
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getAudit(): QueryAudit {
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return this.audit;
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}
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/**
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* Clear the statement cache (for testing or extreme memory pressure).
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*/
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clearStatementCache(): void {
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this.statementCache.clear();
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}
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/**
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* Get the audit trail instance.
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* Call db.printAudit() to see the most recent 100 queries.
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*/
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printAudit(): void {
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// eslint-disable-next-line no-console
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console.log(this.audit.report());
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}
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// ── Private helpers ─────────────────────────────────────────────────────
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/**
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* Get or create a cached prepared statement.
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* Reduces compilation overhead for frequently-run queries.
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*/
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private getOrCacheStatement(sql: string): BetterSqlite3.Statement {
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let stmt = this.statementCache.get(sql);
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if (!stmt) {
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stmt = this.db.prepare(sql);
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this.statementCache.set(sql, stmt);
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}
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return stmt;
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}
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/**
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* Log slow queries to console.
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*/
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private logIfSlow(sql: string, durationMs: number): void {
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if (durationMs > this.logSlowQueries) {
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console.warn(`[SLOW QUERY] ${durationMs.toFixed(2)}ms\n ${sql}`);
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}
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}
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}
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@@ -0,0 +1,143 @@
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/**
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* Database initialization and migration.
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*
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* Handles:
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* - Creating/opening SQLite database
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* - Running DDL schema setup
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* - Migrating legacy JSON files (one-time)
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*/
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import BetterSqlite3 from 'better-sqlite3';
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import { existsSync, readFileSync, renameSync } from 'fs';
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import { randomUUID } from 'crypto';
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import { DDL } from './queries.constant';
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import { QueryBuilder } from '../utils/QueryBuilder';
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export type Db = BetterSqlite3.Database;
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// ── Types ────────────────────────────────────────────────────────────────────
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interface LegacyHolding {
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ticker: string;
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shares: number;
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costBasis: number;
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type: string;
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source: string;
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}
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interface LegacyCall {
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id?: string;
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title: string;
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quarter: string;
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date: string;
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thesis: string;
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tickers: string[];
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snapshot: Record<string, unknown>;
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createdAt: string;
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}
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// ── Main Export ──────────────────────────────────────────────────────────────
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/**
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* Initialize and open the SQLite database.
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*
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* Steps:
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* 1. Create/open database file
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* 2. Enable WAL mode (concurrent read safety)
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* 3. Enable foreign keys
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* 4. Run DDL (create tables if missing)
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* 5. Migrate legacy JSON files (one-time)
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*
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* @param path Path to database file (default: ./market-screener.db)
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* @returns Opened database instance (wrap in DatabaseConnection for safe access)
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*/
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export function createDb(path = './market-screener.db'): Db {
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const db = new BetterSqlite3(path);
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db.pragma('journal_mode = WAL');
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db.pragma('foreign_keys = ON');
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db.exec(DDL);
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migrateJson(db);
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return db;
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}
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// ── Migration Helpers ────────────────────────────────────────────────────────
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/**
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* Migrate legacy JSON files to SQLite (one-time, non-fatal).
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* Called automatically during database initialization.
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*/
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function migrateJson(db: Db): void {
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migratePortfolio(db);
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migrateCalls(db);
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}
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/**
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* Migrate portfolio.json → holdings table.
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* If portfolio.json exists, import all holdings and rename to portfolio.json.migrated.
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* If import fails, leave portfolio.json in place (non-fatal).
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*/
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function migratePortfolio(db: Db): void {
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const src = './portfolio.json';
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if (!existsSync(src)) return;
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try {
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const { holdings } = JSON.parse(readFileSync(src, 'utf8')) as {
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holdings: LegacyHolding[];
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};
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const insertAll = db.transaction((rows: LegacyHolding[]) => {
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for (const h of rows) {
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const qb = new QueryBuilder('MIGRATION_QUERIES.HOLDINGS_INSERT_OR_IGNORE', [
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h.ticker.toUpperCase(),
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h.shares,
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h.costBasis ?? 0,
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h.type ?? 'stock',
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h.source ?? 'Manual',
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]);
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db.prepare(qb.sql).run(...qb.queryParams);
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}
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});
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insertAll(holdings);
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renameSync(src, `${src}.migrated`);
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} catch {
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// Non-fatal: leave portfolio.json in place if migration fails
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}
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}
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/**
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* Migrate market-calls.json → market_calls table.
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* If market-calls.json exists, import all calls and rename to market-calls.json.migrated.
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* If import fails, leave market-calls.json in place (non-fatal).
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*/
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function migrateCalls(db: Db): void {
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const src = './market-calls.json';
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if (!existsSync(src)) return;
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try {
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const { calls } = JSON.parse(readFileSync(src, 'utf8')) as {
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calls: LegacyCall[];
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};
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const insertAll = db.transaction((rows: LegacyCall[]) => {
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for (const c of rows) {
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const qb = new QueryBuilder('MIGRATION_QUERIES.MARKET_CALLS_INSERT_OR_IGNORE', [
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c.id ?? randomUUID(),
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c.title,
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c.quarter,
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c.date,
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c.thesis,
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JSON.stringify(c.tickers ?? []),
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JSON.stringify(c.snapshot ?? {}),
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c.createdAt,
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]);
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db.prepare(qb.sql).run(...qb.queryParams);
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}
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});
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insertAll(calls);
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renameSync(src, `${src}.migrated`);
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} catch {
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// Non-fatal: leave market-calls.json in place if migration fails
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}
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}
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@@ -0,0 +1,126 @@
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/**
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* Query audit logging — tracks all database mutations.
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*
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* Usage:
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* const audit = new QueryAudit();
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* audit.log('SELECT * FROM holdings', [], AuditAction.READ, 1.5);
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* audit.log('UPDATE holdings SET shares = ? WHERE ticker = ?', [100, 'AAPL'], AuditAction.WRITE, 0.8, 1);
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*
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* Provides:
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* - Audit trail of all queries executed
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* - Timing information (for performance monitoring)
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* - Clear distinction between READ/WRITE operations
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* - Optional persistent storage for compliance
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*/
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import type { AuditAction, AuditEntry } from '../types/index';
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/**
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* QueryAudit — in-memory audit trail with optional callbacks.
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*/
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export class QueryAudit {
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private entries: AuditEntry[] = [];
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private onLog?: (entry: AuditEntry) => void | Promise<void>;
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constructor(onLog?: (entry: AuditEntry) => void | Promise<void>) {
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this.onLog = onLog;
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}
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/**
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* Log a query execution.
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* @param sql The SQL string (with ? placeholders intact)
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* @param params The parameter array (safe to log; no raw values in SQL)
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* @param action The operation type (READ, WRITE, DELETE)
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* @param durationMs Execution time in milliseconds
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* @param rowsAffected Number of rows affected (for INSERT/UPDATE/DELETE)
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* @param error If execution failed, the error message
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*/
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log(
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sql: string,
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params: unknown[],
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action: AuditAction,
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durationMs: number,
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rowsAffected?: number,
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error?: string,
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): void {
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const entry: AuditEntry = {
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timestamp: new Date().toISOString(),
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action,
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sql,
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params,
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durationMs,
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rowsAffected,
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error,
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};
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this.entries.push(entry);
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// Call the optional callback (could write to file, logger, or remote service)
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if (this.onLog) {
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const result = this.onLog(entry);
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if (result instanceof Promise) {
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result.catch((err) => {
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console.error('QueryAudit callback failed:', err);
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});
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}
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}
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}
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/**
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* Get all audit entries.
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*/
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all(): AuditEntry[] {
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return [...this.entries];
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}
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/**
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* Filter audit entries by action type.
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*/
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byAction(action: AuditAction): AuditEntry[] {
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return this.entries.filter((e) => e.action === action);
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}
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/**
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* Get the most recent N entries.
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*/
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recent(count: number = 100): AuditEntry[] {
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return this.entries.slice(-count);
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}
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/**
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* Clear the audit trail.
|
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* (Typically not needed unless for testing or cleanup.)
|
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*/
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clear(): void {
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this.entries = [];
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}
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/**
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* Generate a human-readable audit report.
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*/
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report(limitEntries: number = 100): string {
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const recent = this.recent(limitEntries);
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let report = `\n=== Query Audit Report ===\n`;
|
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report += `Total entries: ${this.entries.length}\n`;
|
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report += `Showing last ${recent.length} entries:\n\n`;
|
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|
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for (const entry of recent) {
|
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report += `[${entry.timestamp}] ${entry.action}`;
|
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if (entry.error) {
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report += ` ❌ (${entry.error})`;
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} else {
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report += ` ✓ (${entry.durationMs}ms)`;
|
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if (entry.rowsAffected !== undefined) {
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report += ` — ${entry.rowsAffected} rows`;
|
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}
|
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}
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report += `\n SQL: ${entry.sql}\n`;
|
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if (entry.params.length > 0) {
|
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report += ` Params: [${entry.params.map((p) => JSON.stringify(p)).join(', ')}]\n`;
|
||||
}
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report += '\n';
|
||||
}
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||||
|
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return report;
|
||||
}
|
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}
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@@ -0,0 +1,32 @@
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||||
/**
|
||||
* Database layer — barrel export (ONLY re-exports, no logic).
|
||||
*
|
||||
* This file is the SINGLE public API for all database functionality.
|
||||
* All imports should come from here, not from individual files.
|
||||
*
|
||||
* USAGE:
|
||||
* import { createDb, DatabaseConnection, QueryAudit } from './db/index.js';
|
||||
* import type { AuditEntry } from './db/index.js';
|
||||
*
|
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* FILE ORGANIZATION:
|
||||
* - DatabaseInitializer.ts: createDb() function + migrations (pure functions)
|
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* - QueryAudit.ts: class QueryAudit (logging service)
|
||||
* - DatabaseConnection.ts: class DatabaseConnection (data access service)
|
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* - index.ts: THIS FILE (barrel re-exports only)
|
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*
|
||||
* SECURITY:
|
||||
* - All queries use parameterized statements (QueryBuilder + DatabaseConnection)
|
||||
* - No SQL injection possible via table/column/parameter names
|
||||
* - Audit trail tracks all mutations for compliance
|
||||
*/
|
||||
|
||||
// Initialization
|
||||
export { createDb, type Db } from './DatabaseInitializer';
|
||||
|
||||
// Data access
|
||||
export { DatabaseConnection } from './DatabaseConnection';
|
||||
export { QueryAudit } from './QueryAudit';
|
||||
|
||||
// Types
|
||||
export { AuditAction } from '../types/database.model';
|
||||
export type { AuditEntry, DatabaseOptions } from '../types/database.model';
|
||||
@@ -0,0 +1,100 @@
|
||||
/**
|
||||
* SQL Query Constants
|
||||
*
|
||||
* All SQL queries used in the application.
|
||||
* Repositories reference these by name (e.g., MARKET_CALLS_QUERIES.SELECT_ALL).
|
||||
* QueryBuilder looks them up and binds parameters.
|
||||
*
|
||||
* All queries use parameterized statements (?) for security.
|
||||
* User input NEVER goes into the SQL string.
|
||||
*/
|
||||
|
||||
// ── Holdings Table Queries ───────────────────────────────────────────────────
|
||||
|
||||
export const HOLDINGS_QUERIES = {
|
||||
// Check if any holdings exist
|
||||
EXISTS: 'SELECT COUNT(*) AS n FROM holdings',
|
||||
|
||||
// Get all holdings, sorted by ticker
|
||||
SELECT_ALL: 'SELECT ticker, shares, cost_basis, type, source FROM holdings ORDER BY ticker ASC',
|
||||
|
||||
// Insert or update a holding (UPSERT)
|
||||
UPSERT: `
|
||||
INSERT INTO holdings (ticker, shares, cost_basis, type, source)
|
||||
VALUES (?, ?, ?, ?, ?)
|
||||
ON CONFLICT(ticker) DO UPDATE SET
|
||||
shares = excluded.shares,
|
||||
cost_basis = excluded.cost_basis,
|
||||
type = excluded.type,
|
||||
source = excluded.source
|
||||
`,
|
||||
|
||||
// Delete a holding by ticker
|
||||
DELETE_BY_TICKER: 'DELETE FROM holdings WHERE ticker = ?',
|
||||
};
|
||||
|
||||
// ── Market Calls Table Queries ───────────────────────────────────────────────
|
||||
|
||||
export const MARKET_CALLS_QUERIES = {
|
||||
// Get all market calls, newest first
|
||||
SELECT_ALL: `
|
||||
SELECT id, title, quarter, date, thesis, tickers, snapshot, created_at
|
||||
FROM market_calls
|
||||
ORDER BY created_at DESC
|
||||
`,
|
||||
|
||||
// Get a single market call by ID
|
||||
SELECT_BY_ID: `
|
||||
SELECT id, title, quarter, date, thesis, tickers, snapshot, created_at
|
||||
FROM market_calls
|
||||
WHERE id = ?
|
||||
`,
|
||||
|
||||
// Insert a new market call
|
||||
INSERT: `
|
||||
INSERT INTO market_calls (id, title, quarter, date, thesis, tickers, snapshot, created_at)
|
||||
VALUES (?, ?, ?, ?, ?, ?, ?, ?)
|
||||
`,
|
||||
|
||||
// Delete a market call by ID
|
||||
DELETE_BY_ID: 'DELETE FROM market_calls WHERE id = ?',
|
||||
};
|
||||
|
||||
// ── Migration Queries (for DatabaseInitializer) ──────────────────────────────
|
||||
|
||||
export const MIGRATION_QUERIES = {
|
||||
// Insert holdings during migration
|
||||
HOLDINGS_INSERT_OR_IGNORE: `
|
||||
INSERT OR IGNORE INTO holdings (ticker, shares, cost_basis, type, source)
|
||||
VALUES (?, ?, ?, ?, ?)
|
||||
`,
|
||||
|
||||
// Insert market calls during migration
|
||||
MARKET_CALLS_INSERT_OR_IGNORE: `
|
||||
INSERT OR IGNORE INTO market_calls (id, title, quarter, date, thesis, tickers, snapshot, created_at)
|
||||
VALUES (?, ?, ?, ?, ?, ?, ?, ?)
|
||||
`,
|
||||
};
|
||||
|
||||
// ── Schema Definition (DDL) ──────────────────────────────────────────────────
|
||||
|
||||
export const DDL = `
|
||||
CREATE TABLE IF NOT EXISTS holdings (
|
||||
ticker TEXT PRIMARY KEY,
|
||||
shares REAL NOT NULL,
|
||||
cost_basis REAL NOT NULL DEFAULT 0,
|
||||
type TEXT NOT NULL DEFAULT 'stock',
|
||||
source TEXT NOT NULL DEFAULT 'Manual'
|
||||
);
|
||||
|
||||
CREATE TABLE IF NOT EXISTS market_calls (
|
||||
id TEXT PRIMARY KEY,
|
||||
title TEXT NOT NULL,
|
||||
quarter TEXT NOT NULL,
|
||||
date TEXT NOT NULL,
|
||||
thesis TEXT NOT NULL,
|
||||
tickers TEXT NOT NULL, -- JSON array
|
||||
snapshot TEXT NOT NULL, -- JSON object
|
||||
created_at TEXT NOT NULL
|
||||
);
|
||||
`;
|
||||
Reference in New Issue
Block a user