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

A fully composable actuator implementation for Next.js projects

import { sum } from 'es-toolkit';
import { notFound } from 'next/navigation';
import { isDimensionalMetric } from '../types/metric';
const createMetric = (name, description, baseUnit, value, availableDimensions) => ({
    name,
    description,
    baseUnit,
    measurements: [{ statistic: 'VALUE', value }],
    availableDimensions
});
const evaluateMetric = async (name, metric, dimension) => {
    if (!isDimensionalMetric(metric)) {
        return createMetric(name, metric.description, metric.baseUnit, await metric.value(), []);
    }
    if (!dimension) {
        const aggregatePromises = Object.values(metric.dimensions).map(dimension => dimension.value());
        const aggregateValue = sum(await Promise.all(aggregatePromises));
        return createMetric(name, metric.description, metric.baseUnit, aggregateValue, Object.keys(metric.dimensions));
    }
    const foundDimension = metric.dimensions[dimension];
    if (foundDimension) {
        return createMetric(name, foundDimension.description, metric.baseUnit, await foundDimension.value(), []);
    }
    notFound();
};
export const handleMetric = (name, metric) => {
    return async (req) => {
        const dimension = req.nextUrl.searchParams.get('dimension');
        return Response.json(await evaluateMetric(name, metric, dimension), { status: 200 });
    };
};
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