learn-request-queue/src/version.ts

34 lines
1.0 KiB
TypeScript

import * as queries from "./queries";
import { log, LogLevel } from "./logging"
import express from "express";
import pg from "pg";
import db from "./db";
var versionMajor = 0;
var versionMinor = 6;
var versionPatch = 0;
export function getVersion() {
return `${versionMajor}.${versionMinor}.${versionPatch}`
}
export async function checkVersionMiddleware(_req: express.Request, _res: express.Response, next: express.NextFunction) {
try {
await checkVersion();
} catch (e) {
log(LogLevel.ERROR,e)
// Terminate the nodejs process with error. If restarted, the app will
// never start listening for new requests so this will not result in a
// restart loop.
process.exit(1);
}
next();
}
export async function checkVersion() {
var dbver = await db.query(queries.getDbVersion).then((result: pg.QueryResult) => result.rows[0]['get_version']);
if (dbver != `${versionMajor}.${versionMinor}`) {
throw new Error("Version mismatch!\nApplication version: " + getVersion() + "\nDatabase version: " + dbver)
}
}