next-actuator/dist/handlers/handle-health.js

A fully composable actuator implementation for Next.js projects

const evaluateComponent = async (req, name, component) => {
    const status = await component
        .status(req)
        .then((res) => (typeof res === 'boolean' ? res : res < 400) ? 'UP' : 'DOWN')
        .catch(() => 'DOWN');
    return [name, { status, details: component.details }];
};
export const handleHealth = async (req, config) => {
    const componentEvaluationPromises = Object
        .entries(config.components)
        .map(([name, component]) => evaluateComponent(req, name, component));
    const results = await Promise.all(componentEvaluationPromises);
    const hasNormalDown = results.some(([name, result]) => result.status === 'DOWN' && config.components[name].strategy !== 'DEGRADED');
    const hasDegradedDown = results.some(([name, result]) => result.status === 'DOWN' && config.components[name].strategy === 'DEGRADED');
    const status = hasNormalDown ? 'DOWN' : hasDegradedDown ? 'DEGRADED' : 'UP';
    const res = {
        status,
        ...(results.length > 0 && { components: Object.fromEntries(results) })
    };
    return Response.json(res, { status: 200 });
};
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