next-actuator/dist/index.js

A fully composable actuator implementation for Next.js projects

import { merge } from 'es-toolkit';
import { notFound } from 'next/navigation';
import { handleHealth } from './handlers/handle-health';
import { handleInfo } from './handlers/handle-info';
import { handleMetric } from './handlers/handle-metric';
import { handleMetrics } from './handlers/handle-metrics';
import { cpuMetric } from './metrics/cpu-metric';
import { memoryMetric } from './metrics/memory-metric';
import { uptimeMetric } from './metrics/uptime-metric';
export const createNextActuator = (actuatorConfig) => {
    const config = merge({
        disabled: false,
        components: {},
        excludeInfo: [],
        metrics: {
            'memory.used': memoryMetric,
            'cpu.used': cpuMetric,
            'uptime': uptimeMetric
        },
        endpoints: {
            health: '/health',
            metrics: '/metrics',
            info: '/info'
        }
    }, actuatorConfig ?? {});
    const handlers = [];
    if (!config.disabled) {
        if (config.endpoints.health !== false) {
            handlers.push([config.endpoints.health, handleHealth]);
        }
        if (config.endpoints.metrics !== false) {
            handlers.push([config.endpoints.metrics, handleMetrics]);
            Object
                .entries(config.metrics)
                .forEach(([name, metric]) => handlers.push([`${config.endpoints.metrics}/${name}`, handleMetric(name, metric)]));
        }
        if (config.endpoints.info !== false) {
            handlers.push([config.endpoints.info, handleInfo]);
        }
    }
    const GET = async (req) => {
        const path = req.nextUrl.pathname;
        const handler = handlers.find(([endpoint]) => path.endsWith(endpoint))?.[1];
        if (handler) {
            return handler(req, config);
        }
        notFound();
    };
    return { GET };
};
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