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Forked from healeycodes/isMyWebsiteDown
v18
July 1, 2024
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This is a free, hackable uptime/downtime monitor that sends you an email when the site doesn't return a 200. It also stores historical uptime and latency data in your Val Town SQLite, which is used to power a status page. It supports multiple URLs in the same database and status page.
- Fork this val
- Edit the list of URLs to what you want to check
- For the status page, fork this val: @stevekrouse/status
Runs every 15 min
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import { email } from "https://esm.town/v/std/email?v=11";
import { sqlite } from "https://esm.town/v/std/sqlite?v=6";
await sqlite.execute(
"CREATE TABLE IF NOT EXISTS uptime (id INTEGER PRIMARY KEY AUTOINCREMENT, url TEXT, ok INTEGER, reason TEXT, status INTEGER, duration INTEGER, timestamp DATETIME DEFAULT CURRENT_TIMESTAMP);",
);
export async function uptimeCheck(url: string) {
let reason: string, status: number, end: number;
let ok = true;
const start = performance.now();
try {
const res = await fetch(url);
end = performance.now();
status = res.status;
if (res.status === 200) {
console.log(`Website up (${url}): ${res.status} (${end - start}ms)`);
} else {
ok = false;
console.log(`Website down (${url}): ${res.status} (${end - start}ms)`);
}
} catch (e) {
end = performance.now();
reason = `couldn't fetch: ${e}`;
ok = false;
console.log(`Website down (${url}): ${reason} (${end - start}ms)`);
}
if (!ok) {
email({ subject: `Website down (${url})` });
}
await sqlite.execute(
{
sql: "INSERT INTO uptime (url, ok, reason, status, duration) VALUES (?, ?, ?, ?, ?)",
args: [url, ok ? 1 : 0, reason, status, end - start],
},
);
}
export default async () => {
["https://jonnie.com", "https://faith.tools/"].forEach(uptimeCheck);
};
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v18
July 1, 2024