docs: Document Dataforth test database system and troubleshooting
Investigation and Documentation: - Discovered and documented test database system on AD2 server - Created comprehensive TEST_DATABASE_ARCHITECTURE.md with full system details - Retrieved all key database files from AD2 (import.js, schema.sql, server configs) - Documented data flow: DOS machines → NAS → AD2 → SQLite → Web interface - Verified database health: 1,027,517 records, 1075 MB, dates back to 1990 Database System Architecture: - SQLite database with Node.js/Express.js web server (port 3000) - Automated import via Sync-FromNAS.ps1 (runs every 15 minutes) - 8 log types supported: DSCLOG, 5BLOG, 7BLOG, 8BLOG, PWRLOG, SCTLOG, VASLOG, SHT - FTS5 full-text search, comprehensive indexes for performance - API endpoints: search, stats, export, datasheet generation Troubleshooting Scripts Created: - Database diagnostics: check-db-simple.ps1, test-db-directly.ps1 - Server status checks: check-node-running.ps1, check-db-server.ps1 - Performance analysis: check-db-performance.ps1, check-wal-files.ps1 - API testing: test-api-endpoint.ps1, test-query.js - Import monitoring: check-new-records.ps1 - Database optimization attempts: api-js-optimized.js, api-js-fixed.js - Deployment scripts: deploy-db-optimization.ps1, deploy-db-fix.ps1, restore-original.ps1 Key Findings: - Database file healthy and queryable (verified with test-query.js) - Node.js server not running (port 3000 closed) - root cause of web interface issues - Database last updated 8 days ago (01/13/2026) - automated sync may be broken - Attempted performance optimizations (WAL mode) incompatible with readonly connections - Original api.js restored from backup after optimization conflicts Retrieved Documentation: - QUICKSTART-retrieved.md: Quick start guide for database server - SESSION_NOTES-retrieved.md: Complete session notes from database creation - Sync-FromNAS-retrieved.ps1: Full sync script with database import logic - import-js-retrieved.js: Node.js import script (12,774 bytes) - schema-retrieved.sql: SQLite schema with FTS5 triggers - server-js-retrieved.js: Express.js server configuration - api-js-retrieved.js: API routes and endpoints - package-retrieved.json: Node.js dependencies Action Items Identified: 1. Start Node.js server on AD2 to restore web interface functionality 2. Investigate why automated sync hasn't updated database in 8 days 3. Check Windows Task Scheduler for Sync-FromNAS.ps1 scheduled task 4. Run manual import to catch up on 8 days of test data if needed Technical Details: - Database path: C:\Shares\testdatadb\database\testdata.db - Web interface: http://192.168.0.6:3000 (when running) - Database size: 1075.14 MB (1,127,362,560 bytes) - Total records: 1,027,517 (slight variance from original 1,030,940) - Pass rate: 99.82% (1,029,046 passed, 1,888 failed) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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api-js-optimized.js
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347
api-js-optimized.js
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/**
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* API Routes for Test Data Database
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* OPTIMIZED VERSION with performance improvements
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*/
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const express = require('express');
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const path = require('path');
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const Database = require('better-sqlite3');
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const { generateDatasheet } = require('../templates/datasheet');
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const router = express.Router();
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// Database connection
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const DB_PATH = path.join(__dirname, '..', 'database', 'testdata.db');
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// OPTIMIZED: Add performance PRAGMA settings
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function getDb() {
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const db = new Database(DB_PATH, { readonly: true, timeout: 10000 });
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// Performance optimizations for large databases
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db.pragma('journal_mode = WAL'); // Write-Ahead Logging for better concurrency
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db.pragma('synchronous = NORMAL'); // Faster writes, still safe
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db.pragma('cache_size = -64000'); // 64MB cache (negative = KB)
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db.pragma('mmap_size = 268435456'); // 256MB memory-mapped I/O
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db.pragma('temp_store = MEMORY'); // Temporary tables in memory
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db.pragma('query_only = ON'); // Enforce read-only mode
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return db;
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}
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/**
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* GET /api/search
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* Search test records
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* Query params: serial, model, from, to, result, q, station, logtype, limit, offset
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*/
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router.get('/search', (req, res) => {
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try {
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const db = getDb();
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const { serial, model, from, to, result, q, station, logtype, limit = 100, offset = 0 } = req.query;
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let sql = 'SELECT * FROM test_records WHERE 1=1';
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const params = [];
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if (serial) {
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sql += ' AND serial_number LIKE ?';
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params.push(serial.includes('%') ? serial : `%${serial}%`);
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}
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if (model) {
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sql += ' AND model_number LIKE ?';
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params.push(model.includes('%') ? model : `%${model}%`);
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}
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if (from) {
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sql += ' AND test_date >= ?';
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params.push(from);
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}
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if (to) {
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sql += ' AND test_date <= ?';
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params.push(to);
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}
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if (result) {
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sql += ' AND overall_result = ?';
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params.push(result.toUpperCase());
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}
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if (station) {
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sql += ' AND test_station = ?';
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params.push(station);
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}
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if (logtype) {
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sql += ' AND log_type = ?';
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params.push(logtype);
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}
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if (q) {
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// Full-text search - rebuild query with FTS
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sql = `SELECT test_records.* FROM test_records
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JOIN test_records_fts ON test_records.id = test_records_fts.rowid
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WHERE test_records_fts MATCH ?`;
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params.length = 0;
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params.push(q);
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if (serial) {
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sql += ' AND serial_number LIKE ?';
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params.push(serial.includes('%') ? serial : `%${serial}%`);
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}
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if (model) {
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sql += ' AND model_number LIKE ?';
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params.push(model.includes('%') ? model : `%${model}%`);
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}
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if (station) {
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sql += ' AND test_station = ?';
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params.push(station);
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}
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if (logtype) {
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sql += ' AND log_type = ?';
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params.push(logtype);
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}
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if (result) {
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sql += ' AND overall_result = ?';
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params.push(result.toUpperCase());
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}
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if (from) {
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sql += ' AND test_date >= ?';
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params.push(from);
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}
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if (to) {
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sql += ' AND test_date <= ?';
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params.push(to);
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}
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}
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sql += ' ORDER BY test_date DESC, serial_number';
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sql += ` LIMIT ? OFFSET ?`;
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params.push(parseInt(limit), parseInt(offset));
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const records = db.prepare(sql).all(...params);
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// Get total count
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let countSql = sql.replace(/SELECT .* FROM/, 'SELECT COUNT(*) as count FROM')
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.replace(/ORDER BY.*$/, '');
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countSql = countSql.replace(/LIMIT \? OFFSET \?/, '');
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const countParams = params.slice(0, -2);
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const total = db.prepare(countSql).get(...countParams);
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db.close();
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res.json({
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records,
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total: total?.count || records.length,
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limit: parseInt(limit),
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offset: parseInt(offset)
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});
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} catch (err) {
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res.status(500).json({ error: err.message });
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}
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});
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/**
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* GET /api/record/:id
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* Get single record by ID
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*/
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router.get('/record/:id', (req, res) => {
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try {
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const db = getDb();
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const record = db.prepare('SELECT * FROM test_records WHERE id = ?').get(req.params.id);
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db.close();
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if (!record) {
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return res.status(404).json({ error: 'Record not found' });
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}
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res.json(record);
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} catch (err) {
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res.status(500).json({ error: err.message });
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}
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});
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/**
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* GET /api/datasheet/:id
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* Generate datasheet for a record
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* Query params: format (html, txt)
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*/
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router.get('/datasheet/:id', (req, res) => {
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try {
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const db = getDb();
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const record = db.prepare('SELECT * FROM test_records WHERE id = ?').get(req.params.id);
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db.close();
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if (!record) {
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return res.status(404).json({ error: 'Record not found' });
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}
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const format = req.query.format || 'html';
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const datasheet = generateDatasheet(record, format);
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if (format === 'html') {
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res.type('html').send(datasheet);
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} else {
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res.type('text/plain').send(datasheet);
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}
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} catch (err) {
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res.status(500).json({ error: err.message });
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}
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});
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/**
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* GET /api/stats
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* Get database statistics
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*/
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router.get('/stats', (req, res) => {
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try {
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const db = getDb();
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const stats = {
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total_records: db.prepare('SELECT COUNT(*) as count FROM test_records').get().count,
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by_log_type: db.prepare(`
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SELECT log_type, COUNT(*) as count
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FROM test_records
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GROUP BY log_type
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ORDER BY count DESC
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`).all(),
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by_result: db.prepare(`
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SELECT overall_result, COUNT(*) as count
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FROM test_records
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GROUP BY overall_result
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`).all(),
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by_station: db.prepare(`
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SELECT test_station, COUNT(*) as count
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FROM test_records
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WHERE test_station IS NOT NULL AND test_station != ''
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GROUP BY test_station
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ORDER BY test_station
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`).all(),
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date_range: db.prepare(`
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SELECT MIN(test_date) as oldest, MAX(test_date) as newest
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FROM test_records
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`).get(),
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recent_serials: db.prepare(`
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SELECT DISTINCT serial_number, model_number, test_date
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FROM test_records
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ORDER BY test_date DESC
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LIMIT 10
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`).all()
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};
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db.close();
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res.json(stats);
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} catch (err) {
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res.status(500).json({ error: err.message });
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}
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});
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/**
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* GET /api/filters
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* Get available filter options (test stations, log types, models)
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*/
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router.get('/filters', (req, res) => {
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try {
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const db = getDb();
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const filters = {
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stations: db.prepare(`
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SELECT DISTINCT test_station
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FROM test_records
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WHERE test_station IS NOT NULL AND test_station != ''
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ORDER BY test_station
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`).all().map(r => r.test_station),
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log_types: db.prepare(`
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SELECT DISTINCT log_type
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FROM test_records
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ORDER BY log_type
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`).all().map(r => r.log_type),
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models: db.prepare(`
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SELECT DISTINCT model_number, COUNT(*) as count
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FROM test_records
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GROUP BY model_number
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ORDER BY count DESC
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LIMIT 500
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`).all()
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};
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db.close();
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res.json(filters);
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} catch (err) {
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res.status(500).json({ error: err.message });
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}
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});
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/**
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* GET /api/export
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* Export search results as CSV
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*/
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router.get('/export', (req, res) => {
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try {
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const db = getDb();
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const { serial, model, from, to, result, station, logtype } = req.query;
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let sql = 'SELECT * FROM test_records WHERE 1=1';
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const params = [];
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if (serial) {
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sql += ' AND serial_number LIKE ?';
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params.push(serial.includes('%') ? serial : `%${serial}%`);
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}
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if (model) {
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sql += ' AND model_number LIKE ?';
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params.push(model.includes('%') ? model : `%${model}%`);
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}
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if (from) {
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sql += ' AND test_date >= ?';
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params.push(from);
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}
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if (to) {
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sql += ' AND test_date <= ?';
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params.push(to);
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}
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if (result) {
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sql += ' AND overall_result = ?';
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params.push(result.toUpperCase());
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}
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if (station) {
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sql += ' AND test_station = ?';
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params.push(station);
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}
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if (logtype) {
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sql += ' AND log_type = ?';
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params.push(logtype);
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}
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sql += ' ORDER BY test_date DESC, serial_number LIMIT 10000';
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const records = db.prepare(sql).all(...params);
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db.close();
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// Generate CSV
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const headers = ['id', 'log_type', 'model_number', 'serial_number', 'test_date', 'test_station', 'overall_result', 'source_file'];
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let csv = headers.join(',') + '\n';
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for (const record of records) {
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const row = headers.map(h => {
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const val = record[h] || '';
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return `"${String(val).replace(/"/g, '""')}"`;
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});
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csv += row.join(',') + '\n';
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}
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res.setHeader('Content-Type', 'text/csv');
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res.setHeader('Content-Disposition', 'attachment; filename=test_records.csv');
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res.send(csv);
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} catch (err) {
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res.status(500).json({ error: err.message });
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}
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});
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module.exports = router;
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