@piggly/fastify-chassis/dist/esm/services/HealthCheckService.js

An ESM/CommonJS toolkit to help you to do common operations in your back-end applications with Fastify and NodeJS.

import debug from 'debug';
/**
 * @file Handle health check services.
 * @copyright Piggly Lab 2024
 */
export class HealthCheckService {
    /**
     * Handlers to check.
     *
     * @type {Map<string, () => Promise<boolean>>}
     * @protected
     * @memberof HealthCheckService
     * @since 4.0.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    handlers;
    /**
     * Constructor.
     *
     * @public
     * @constructor
     * @memberof HealthCheckService
     * @since 4.0.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    constructor() {
        this.handlers = new Map();
    }
    /**
     * Check all handlers.
     *
     * @returns {Promise<{
     * 	success: boolean;
     * 	services: Record<string, boolean>;
     * }>}
     * @public
     * @memberof HealthCheckService
     * @since 4.0.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    async check() {
        let success = true;
        const services = {};
        for (const [name, handler] of this.handlers) {
            try {
                services[name] = await handler();
            }
            catch (error) {
                services[name] = false;
                debug('app:healthcheck:error')(`${name} failed to health check`, error);
            }
            finally {
                success = success && services[name];
            }
        }
        return {
            services,
            success,
        };
    }
    /**
     * Register a new handler.
     *
     * @param {string} name
     * @param {() => Promise<boolean>} handler
     * @public
     * @memberof HealthCheckService
     * @since 4.0.0
     * @author Caique Araujo <caique@piggly.com.br>
     */
    register(name, handler) {
        this.handlers.set(name, handler);
    }
}
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