molstar
Version:
A comprehensive macromolecular library.
60 lines (59 loc) • 2.04 kB
JavaScript
;
/**
* Copyright (c) 2018-2024 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author David Sehnal <david.sehnal@gmail.com>
* @author Alexander Rose <alexander.rose@weirdbyte.de>
* @author Sebastian Bittrich <sebastian.bittrich@rcsb.org>
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.getParam = getParam;
exports.healthCheck = healthCheck;
const fs_1 = require("fs");
const console_logger_1 = require("../../mol-util/console-logger");
function getParam(params, ...path) {
try {
let current = params;
for (const p of path) {
if (typeof current === 'undefined')
return;
current = current[p];
}
return current;
}
catch (e) {
console_logger_1.ConsoleLogger.error('Config', `Unable to retrieve property ${path.join('.')} from ${JSON.stringify(params)}`);
}
}
/**
* Used to define a dedicated endpoint to monitor service health. Optionally checks whether source data from file system is readable.
* @param res used to write response
* @param paths array of file paths to check, may be empty
*/
async function healthCheck(res, paths) {
if (paths.length === 0) {
healthCheckResponse(res, true);
return;
}
for (const path of paths) {
try {
// assert readable file
await fs_1.promises.access(path, fs_1.constants.R_OK);
}
catch (e) {
console_logger_1.ConsoleLogger.error(`Error accessing path ${path}:`, e);
healthCheckResponse(res, false, 'Failed to access data from file system.');
return;
}
}
healthCheckResponse(res, true);
}
function healthCheckResponse(res, success, msg) {
res.writeHead(success ? 200 : 500, {
'Content-Type': 'text/plain',
'Access-Control-Allow-Origin': '*',
'Access-Control-Allow-Headers': 'X-Requested-With',
});
res.write(success ? msg || 'true' : msg || 'false');
res.end();
}