mirror of https://github.com/Lissy93/dashy.git
37 lines
1.4 KiB
JavaScript
37 lines
1.4 KiB
JavaScript
/**
|
|
* An endpoint for confirming that the application is up and running
|
|
* Used for better Docker healthcheck results
|
|
* Note that exiting with code 1 indicates failure, and 0 is success
|
|
*/
|
|
|
|
const http = require('http');
|
|
|
|
/* Location of the server to test */
|
|
const port = process.env.PORT || !!process.env.IS_DOCKER ? 80 : 4000;
|
|
const host = process.env.HOST || '0.0.0.0';
|
|
const timeout = 2000;
|
|
|
|
const requestOptions = { host, port, timeout };
|
|
|
|
const startTime = new Date(); // Initialize timestamp to calculate time taken
|
|
|
|
console.log(`[${startTime}] Running health check...`);
|
|
|
|
/* Starts quick HTTP server, attempts to send GET to app, then exists with appropriate exit code */
|
|
const healthCheck = http.request(requestOptions, (response) => {
|
|
const totalTime = (new Date() - startTime) / 1000;
|
|
const status = response.statusCode;
|
|
const color = status === 200 ? '\x1b[32m' : '\x1b[31m';
|
|
const message = `${color}Status: ${status}\nRequest took ${totalTime} seconds\n\x1b[0m---`;
|
|
console.log(message); // Print out healthcheck response
|
|
process.exit(status === 200 ? 0 : 1); // Exit with 0 (success), if response is 200 okay
|
|
});
|
|
|
|
/* If the server is not running, then print the error code, and exit with 1 */
|
|
healthCheck.on('error', (err) => {
|
|
console.error(`\x1b[31mHealthceck Failed, Error: ${'\x1b[33m'}${err.code}\x1b[0m`);
|
|
process.exit(1);
|
|
});
|
|
|
|
healthCheck.end();
|