mirror of https://github.com/Lissy93/dashy.git
87 lines
3.1 KiB
JavaScript
87 lines
3.1 KiB
JavaScript
/**
|
||
* This file contains the Node.js code, used for the optional status check feature
|
||
* It accepts a single url parameter, and will make an empty GET request to that
|
||
* endpoint, and then resolve the response status code, time taken, and short message
|
||
*/
|
||
const axios = require('axios').default;
|
||
const https = require('https');
|
||
|
||
/* Determines if successful from the HTTP response code */
|
||
const getResponseType = (code) => {
|
||
if (Number.isNaN(code)) return false;
|
||
const numericCode = parseInt(code, 10);
|
||
return (numericCode >= 200 && numericCode <= 302);
|
||
};
|
||
|
||
/* Makes human-readable response text for successful check */
|
||
const makeMessageText = (data) => `${data.successStatus ? '✅' : '⚠️'} `
|
||
+ `${data.serverName || 'Server'} responded with `
|
||
+ `${data.statusCode} - ${data.statusText}. `
|
||
+ `\n⏱️Took ${data.timeTaken} ms`;
|
||
|
||
/* Makes human-readable response text for failed check */
|
||
const makeErrorMessage = (data) => `❌ Service Unavailable: ${data.hostname || 'Server'} `
|
||
+ `resulted in ${data.code || 'a fatal error'} ${data.errno ? `(${data.errno})` : ''}`;
|
||
|
||
const makeErrorMessage2 = (data) => '❌ Service Error - '
|
||
+ `${data.status} - ${data.statusText}`;
|
||
|
||
/* Kicks of a HTTP request, then formats and renders results */
|
||
const makeRequest = (url, headers, insecure, render) => {
|
||
const startTime = new Date();
|
||
const requestMaker = axios.create({
|
||
httpsAgent: new https.Agent({
|
||
rejectUnauthorized: !insecure,
|
||
}),
|
||
});
|
||
requestMaker.get(url, { headers })
|
||
.then((response) => {
|
||
const statusCode = response.status;
|
||
const { statusText } = response;
|
||
const successStatus = getResponseType(statusCode);
|
||
const serverName = response.request.socket.servername;
|
||
const timeTaken = (new Date() - startTime);
|
||
const results = {
|
||
statusCode, statusText, serverName, successStatus, timeTaken,
|
||
};
|
||
const messageText = makeMessageText(results);
|
||
results.message = messageText;
|
||
return results;
|
||
})
|
||
.catch((error) => {
|
||
render(JSON.stringify({
|
||
successStatus: false,
|
||
message: error.response ? makeErrorMessage2(error.response) : makeErrorMessage(error),
|
||
}));
|
||
}).then((results) => {
|
||
render(JSON.stringify(results));
|
||
});
|
||
};
|
||
|
||
const decodeHeaders = (maybeHeaders) => {
|
||
if (!maybeHeaders) return {};
|
||
const decodedHeaders = decodeURIComponent(maybeHeaders);
|
||
let parsedHeaders = {};
|
||
try {
|
||
parsedHeaders = JSON.parse(decodedHeaders);
|
||
} catch (e) { /* Not valid JSON, will just return false */ }
|
||
return parsedHeaders;
|
||
};
|
||
|
||
/* Main function, will check if a URL present, and call function */
|
||
module.exports = (paramStr, render) => {
|
||
if (!paramStr || !paramStr.includes('=')) {
|
||
render(JSON.stringify({
|
||
success: false,
|
||
message: '❌ Malformed URL',
|
||
}));
|
||
} else {
|
||
// Prepare the parameters, which are got from the URL
|
||
const params = new URLSearchParams(paramStr);
|
||
const url = decodeURIComponent(params.get('url'));
|
||
const headers = decodeHeaders(params.get('headers'));
|
||
const enableInsecure = !!params.get('enableInsecure');
|
||
makeRequest(url, headers, enableInsecure, render);
|
||
}
|
||
};
|