next/dist/esm/build/templates/pages-api.js

The React Framework

import { sendError } from '../../server/api-utils';
import { RouteKind } from '../../server/route-kind';
import { PagesAPIRouteModule } from '../../server/route-modules/pages-api/module.compiled';
import { hoist } from './helpers';
// Import the userland code.
import * as userland from 'VAR_USERLAND';
import { getTracer, SpanKind } from '../../server/lib/trace/tracer';
import { BaseServerSpan } from '../../server/lib/trace/constants';
// Re-export the handler (should be the default export).
export default hoist(userland, 'default');
// Re-export config.
export const config = hoist(userland, 'config');
// Create and export the route module that will be consumed.
const routeModule = new PagesAPIRouteModule({
    definition: {
        kind: RouteKind.PAGES_API,
        page: 'VAR_DEFINITION_PAGE',
        pathname: 'VAR_DEFINITION_PATHNAME',
        // The following aren't used in production.
        bundlePath: '',
        filename: ''
    },
    userland,
    distDir: process.env.__NEXT_RELATIVE_DIST_DIR || '',
    projectDir: process.env.__NEXT_RELATIVE_PROJECT_DIR || ''
});
export async function handler(req, res, ctx) {
    let srcPage = 'VAR_DEFINITION_PAGE';
    // turbopack doesn't normalize `/index` in the page name
    // so we need to to process dynamic routes properly
    // TODO: fix turbopack providing differing value from webpack
    if (process.env.TURBOPACK) {
        srcPage = srcPage.replace(/\/index$/, '') || '/';
    }
    const prepareResult = await routeModule.prepare(req, res, {
        srcPage
    });
    if (!prepareResult) {
        res.statusCode = 400;
        res.end('Bad Request');
        ctx.waitUntil == null ? void 0 : ctx.waitUntil.call(ctx, Promise.resolve());
        return;
    }
    const { query, params, prerenderManifest } = prepareResult;
    try {
        const method = req.method || 'GET';
        const tracer = getTracer();
        const activeSpan = tracer.getActiveScopeSpan();
        const onRequestError = routeModule.instrumentationOnRequestError.bind(routeModule);
        const invokeRouteModule = async (span)=>routeModule.render(req, res, {
                query: {
                    ...query,
                    ...params
                },
                params,
                allowedRevalidateHeaderKeys: process.env.__NEXT_ALLOWED_REVALIDATE_HEADERS,
                multiZoneDraftMode: Boolean(process.env.__NEXT_MULTI_ZONE_DRAFT_MODE),
                trustHostHeader: process.env.__NEXT_TRUST_HOST_HEADER,
                // TODO: get this from from runtime env so manifest
                // doesn't need to load
                previewProps: prerenderManifest.preview,
                propagateError: false,
                dev: routeModule.isDev,
                page: 'VAR_DEFINITION_PAGE',
                projectDir: process.env.__NEXT_RELATIVE_PROJECT_DIR || '',
                onError: (...args)=>onRequestError(req, ...args)
            }).finally(()=>{
                if (!span) return;
                span.setAttributes({
                    'http.status_code': res.statusCode,
                    'next.rsc': false
                });
                const rootSpanAttributes = tracer.getRootSpanAttributes();
                // We were unable to get attributes, probably OTEL is not enabled
                if (!rootSpanAttributes) {
                    return;
                }
                if (rootSpanAttributes.get('next.span_type') !== BaseServerSpan.handleRequest) {
                    console.warn(`Unexpected root span type '${rootSpanAttributes.get('next.span_type')}'. Please report this Next.js issue https://github.com/vercel/next.js`);
                    return;
                }
                const route = rootSpanAttributes.get('next.route');
                if (route) {
                    const name = `${method} ${route}`;
                    span.setAttributes({
                        'next.route': route,
                        'http.route': route,
                        'next.span_name': name
                    });
                    span.updateName(name);
                } else {
                    span.updateName(`${method} ${req.url}`);
                }
            });
        // TODO: activeSpan code path is for when wrapped by
        // next-server can be removed when this is no longer used
        if (activeSpan) {
            await invokeRouteModule(activeSpan);
        } else {
            await tracer.withPropagatedContext(req.headers, ()=>tracer.trace(BaseServerSpan.handleRequest, {
                    spanName: `${method} ${req.url}`,
                    kind: SpanKind.SERVER,
                    attributes: {
                        'http.method': method,
                        'http.target': req.url
                    }
                }, invokeRouteModule));
        }
    } catch (err) {
        // we re-throw in dev to show the error overlay
        if (routeModule.isDev) {
            throw err;
        }
        // this is technically an invariant as error handling
        // should be done inside of api-resolver onError
        sendError(res, 500, 'Internal Server Error');
    } finally{
        // We don't allow any waitUntil work in pages API routes currently
        // so if callback is present return with resolved promise since no
        // pending work
        ctx.waitUntil == null ? void 0 : ctx.waitUntil.call(ctx, Promise.resolve());
    }
}

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