before delete 3software

backend/include/log.js

@@ -0,0 +1,90 @@
+const sqlite3 = require('better-sqlite3')
+
+const db = sqlite3(`./data/log.sqlite`)
+db.pragma('journal_mode = DELETE')
+db.pragma('synchronous = 0')
+
+db.exec(`
+	create table if not exists http (time integer default (strftime('%s','now')), method text, url text, headers text, body text, status text, duration integer);	
+	create table if not exists  mtproto (time integer default (strftime('%s','now')), message text);
+	create table if not exists  error (time integer default (strftime('%s','now')), message text, stack text);
+`)
+
+function http (req, res, duration) {
+	const data = {
+		method: req.method,
+		url: req.url,
+		status: res.statusCode,
+		duration
+	};
+
+	['headers', 'body'].forEach(key => {
+		const value = req.body[key] 
+		try {
+			data[key] = value instanceof Array && value.length < 1_000_000 || value instanceof Object ? JSON.stringify(value) : value?.toString() || null 
+		} catch (err) {
+			error(err)
+			data[key] = value?.toString() || null
+		} 
+	})
+	
+	db
+		.prepare(`insert into http (method, url, headers, body, status, duration) values (:method, :url, :headers, :body, :status, :duration)`)
+		.run(data)	
+}
+
+function safeStringify(obj, indent = 2) {
+	const cache = new Set()
+
+	return JSON.stringify(obj, (key, value) => {
+		if (typeof value === 'object' && value !== null) {
+			if (cache.has(value)) 
+				return '[Circular]'
+
+			cache.add(value)
+		}
+
+		return value
+	}, indent)
+}
+
+function mtproto (update) {
+	const message = update
+	message.self = message
+	
+	db
+		.prepare(`insert into mtproto (message) values (:message)`)
+		.run({ 
+			message: safeStringify(message) 
+		})
+}
+
+function error (...args) {
+	const stacks = []
+	const message = args.map(arg => {
+		if (arg instanceof Error) {
+			stacks.push(arg.stack)
+			return 'Error: ' + arg.message
+		} else if (arg instanceof Object) {
+			try {
+				return JSON.stringify(arg)
+			} catch (err) { }
+		}
+
+		return String(arg)
+	}).join('\n')
+
+	if (stacks.length == 0)
+		stacks.push(new Error().stack)
+
+	console.error(message)
+
+	db
+		.prepare(`insert into error (message, stack) values (:message, :stack)`)
+		.run({ 
+			message, 
+			stack: stacks.join('\n\n') 
+		})	
+}
+
+module.exports = { http, mtproto, error }