mirror of
https://github.com/louislam/uptime-kuma.git
synced 2024-09-07 09:51:57 +00:00
120 lines
3.6 KiB
JavaScript
120 lines
3.6 KiB
JavaScript
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const fs = require("fs");
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const {sleep} = require("./util");
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const {R} = require("redbean-node");
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const {setSetting, setting} = require("./util-server");
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class Database {
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static templatePath = "./db/kuma.db"
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static path = './data/kuma.db';
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static latestVersion = 1;
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static noReject = true;
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static async patch() {
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let version = parseInt(await setting("database_version"));
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if (! version) {
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version = 0;
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}
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console.info("Your database version: " + version);
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console.info("Latest database version: " + this.latestVersion);
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if (version === this.latestVersion) {
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console.info("Database no need to patch");
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} else {
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console.info("Database patch is needed")
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console.info("Backup the db")
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const backupPath = "./data/kuma.db.bak" + version;
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fs.copyFileSync(Database.path, backupPath);
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// Try catch anything here, if gone wrong, restore the backup
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try {
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for (let i = version + 1; i <= this.latestVersion; i++) {
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const sqlFile = `./db/patch${i}.sql`;
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console.info(`Patching ${sqlFile}`);
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await Database.importSQLFile(sqlFile);
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console.info(`Patched ${sqlFile}`);
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await setSetting("database_version", i);
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}
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console.log("Database Patched Successfully");
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} catch (ex) {
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await Database.close();
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console.error("Patch db failed!!! Restoring the backup")
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fs.copyFileSync(backupPath, Database.path);
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console.error(ex)
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console.error("Start Uptime-Kuma failed due to patch db failed")
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console.error("Please submit the bug report if you still encounter the problem after restart: https://github.com/louislam/uptime-kuma/issues")
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process.exit(1);
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}
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}
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}
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/**
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* Sadly, multi sql statements is not supported by many sqlite libraries, I have to implement it myself
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* @param filename
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* @returns {Promise<void>}
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*/
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static async importSQLFile(filename) {
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await R.getCell("SELECT 1");
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let text = fs.readFileSync(filename).toString();
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// Remove all comments (--)
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let lines = text.split("\n");
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lines = lines.filter((line) => {
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return ! line.startsWith("--")
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});
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// Split statements by semicolon
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// Filter out empty line
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text = lines.join("\n")
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let statements = text.split(";")
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.map((statement) => {
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return statement.trim();
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})
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.filter((statement) => {
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return statement !== "";
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})
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for (let statement of statements) {
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await R.exec(statement);
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}
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}
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/**
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* Special handle, because tarn.js throw a promise reject that cannot be caught
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* @returns {Promise<void>}
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*/
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static async close() {
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const listener = (reason, p) => {
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Database.noReject = false;
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};
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process.addListener('unhandledRejection', listener);
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console.log("Closing DB")
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while (true) {
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Database.noReject = true;
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await R.close()
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await sleep(2000)
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if (Database.noReject) {
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break;
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} else {
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console.log("Waiting to close the db")
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}
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}
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console.log("SQLite closed")
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process.removeListener('unhandledRejection', listener);
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}
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}
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module.exports = Database;
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