@whook/whook/dist/services/HOST.js

Build strong and efficient REST web services.

import { autoService, name, location } from 'knifecycle';
import { noop } from '../libs/utils.js';
const DEFAULT_ENV = {};
/* Architecture Note #2.2: IP detection
If no `HOST` configuration is specified in dependencies nor in ENV,
 this service detects the machine host automagically.
*/
export default location(name('HOST', autoService(initHost)), import.meta.url);
/**
 * Initialize the HOST service from ENV or auto-detection if
 *  none specified in ENV
 * @param  {Object}   services
 * The services HOST depends on
 * @param  {Object}   [services.ENV={}]
 * An optional environment object
 * @param  {Object}   [services.log=noop]
 * An optional logging service
 * @param  {Object}   services.importer
 * A service allowing to dynamically import ES modules
 * @return {Promise<String>}
 * A promise of a containing the actual host.
 */
async function initHost({ ENV = DEFAULT_ENV, log = noop, importer, }) {
    log('debug', `🏭 - Initializing the HOST service.`);
    if ('undefined' !== typeof ENV.HOST) {
        log('warning', `♻️ - Using ENV host "${ENV.HOST}"`);
        return ENV.HOST;
    }
    const host = await (await importer('internal-ip')).internalIpV4();
    if (!host) {
        log('warning', `🚫 - Could not detect any host. Fallback to "localhost".`);
        return 'localhost';
    }
    log('warning', `✔ - Using detected host "${host}".`);
    return host;
}
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