next
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The React Framework
314 lines (313 loc) • 15.5 kB
JavaScript
import { AppRouteRouteModule } from '../../server/route-modules/app-route/module.compiled';
import { RouteKind } from '../../server/route-kind';
import { patchFetch as _patchFetch } from '../../server/lib/patch-fetch';
import { getRequestMeta } from '../../server/request-meta';
import { getTracer, SpanKind } from '../../server/lib/trace/tracer';
import { normalizeAppPath } from '../../shared/lib/router/utils/app-paths';
import { NodeNextRequest, NodeNextResponse } from '../../server/base-http/node';
import { NextRequestAdapter, signalFromNodeResponse } from '../../server/web/spec-extension/adapters/next-request';
import { BaseServerSpan } from '../../server/lib/trace/constants';
import { getRevalidateReason } from '../../server/instrumentation/utils';
import { sendResponse } from '../../server/send-response';
import { fromNodeOutgoingHttpHeaders, toNodeOutgoingHttpHeaders } from '../../server/web/utils';
import { getCacheControlHeader } from '../../server/lib/cache-control';
import { INFINITE_CACHE, NEXT_CACHE_TAGS_HEADER } from '../../lib/constants';
import { NoFallbackError } from '../../shared/lib/no-fallback-error.external';
import { CachedRouteKind } from '../../server/response-cache';
import * as userland from 'VAR_USERLAND';
// We inject the nextConfigOutput here so that we can use them in the route
// module.
// INJECT:nextConfigOutput
const routeModule = new AppRouteRouteModule({
definition: {
kind: RouteKind.APP_ROUTE,
page: 'VAR_DEFINITION_PAGE',
pathname: 'VAR_DEFINITION_PATHNAME',
filename: 'VAR_DEFINITION_FILENAME',
bundlePath: 'VAR_DEFINITION_BUNDLE_PATH'
},
distDir: process.env.__NEXT_RELATIVE_DIST_DIR || '',
relativeProjectDir: process.env.__NEXT_RELATIVE_PROJECT_DIR || '',
resolvedPagePath: 'VAR_RESOLVED_PAGE_PATH',
nextConfigOutput,
userland
});
// Pull out the exports that we need to expose from the module. This should
// be eliminated when we've moved the other routes to the new format. These
// are used to hook into the route.
const { workAsyncStorage, workUnitAsyncStorage, serverHooks } = routeModule;
function patchFetch() {
return _patchFetch({
workAsyncStorage,
workUnitAsyncStorage
});
}
export { routeModule, workAsyncStorage, workUnitAsyncStorage, serverHooks, patchFetch, };
export async function handler(req, res, ctx) {
var _nextConfig_experimental;
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$/, '') || '/';
} else if (srcPage === '/index') {
// we always normalize /index specifically
srcPage = '/';
}
const multiZoneDraftMode = process.env.__NEXT_MULTI_ZONE_DRAFT_MODE;
const prepareResult = await routeModule.prepare(req, res, {
srcPage,
multiZoneDraftMode
});
if (!prepareResult) {
res.statusCode = 400;
res.end('Bad Request');
ctx.waitUntil == null ? void 0 : ctx.waitUntil.call(ctx, Promise.resolve());
return null;
}
const { buildId, params, nextConfig, isDraftMode, prerenderManifest, routerServerContext, isOnDemandRevalidate, revalidateOnlyGenerated, resolvedPathname } = prepareResult;
const normalizedSrcPage = normalizeAppPath(srcPage);
let isIsr = Boolean(prerenderManifest.dynamicRoutes[normalizedSrcPage] || prerenderManifest.routes[resolvedPathname]);
if (isIsr && !isDraftMode) {
const isPrerendered = Boolean(prerenderManifest.routes[resolvedPathname]);
const prerenderInfo = prerenderManifest.dynamicRoutes[normalizedSrcPage];
if (prerenderInfo) {
if (prerenderInfo.fallback === false && !isPrerendered) {
throw new NoFallbackError();
}
}
}
let cacheKey = null;
if (isIsr && !routeModule.isDev && !isDraftMode) {
cacheKey = resolvedPathname;
// ensure /index and / is normalized to one key
cacheKey = cacheKey === '/index' ? '/' : cacheKey;
}
const supportsDynamicResponse = // If we're in development, we always support dynamic HTML
routeModule.isDev === true || // If this is not SSG or does not have static paths, then it supports
// dynamic HTML.
!isIsr;
// This is a revalidation request if the request is for a static
// page and it is not being resumed from a postponed render and
// it is not a dynamic RSC request then it is a revalidation
// request.
const isRevalidate = isIsr && !supportsDynamicResponse;
const method = req.method || 'GET';
const tracer = getTracer();
const activeSpan = tracer.getActiveScopeSpan();
const context = {
params,
prerenderManifest,
renderOpts: {
experimental: {
cacheComponents: Boolean(nextConfig.experimental.cacheComponents),
authInterrupts: Boolean(nextConfig.experimental.authInterrupts)
},
supportsDynamicResponse,
incrementalCache: getRequestMeta(req, 'incrementalCache'),
cacheLifeProfiles: (_nextConfig_experimental = nextConfig.experimental) == null ? void 0 : _nextConfig_experimental.cacheLife,
isRevalidate,
waitUntil: ctx.waitUntil,
onClose: (cb)=>{
res.on('close', cb);
},
onAfterTaskError: undefined,
onInstrumentationRequestError: (error, _request, errorContext)=>routeModule.onRequestError(req, error, errorContext, routerServerContext)
},
sharedContext: {
buildId
}
};
const nodeNextReq = new NodeNextRequest(req);
const nodeNextRes = new NodeNextResponse(res);
const nextReq = NextRequestAdapter.fromNodeNextRequest(nodeNextReq, signalFromNodeResponse(res));
try {
const invokeRouteModule = async (span)=>{
return routeModule.handle(nextReq, context).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}`);
}
});
};
const handleResponse = async (currentSpan)=>{
var _cacheEntry_value;
const responseGenerator = async ({ previousCacheEntry })=>{
try {
if (!getRequestMeta(req, 'minimalMode') && isOnDemandRevalidate && revalidateOnlyGenerated && !previousCacheEntry) {
res.statusCode = 404;
// on-demand revalidate always sets this header
res.setHeader('x-nextjs-cache', 'REVALIDATED');
res.end('This page could not be found');
return null;
}
const response = await invokeRouteModule(currentSpan);
req.fetchMetrics = context.renderOpts.fetchMetrics;
let pendingWaitUntil = context.renderOpts.pendingWaitUntil;
// Attempt using provided waitUntil if available
// if it's not we fallback to sendResponse's handling
if (pendingWaitUntil) {
if (ctx.waitUntil) {
ctx.waitUntil(pendingWaitUntil);
pendingWaitUntil = undefined;
}
}
const cacheTags = context.renderOpts.collectedTags;
// If the request is for a static response, we can cache it so long
// as it's not edge.
if (isIsr) {
const blob = await response.blob();
// Copy the headers from the response.
const headers = toNodeOutgoingHttpHeaders(response.headers);
if (cacheTags) {
headers[NEXT_CACHE_TAGS_HEADER] = cacheTags;
}
if (!headers['content-type'] && blob.type) {
headers['content-type'] = blob.type;
}
const revalidate = typeof context.renderOpts.collectedRevalidate === 'undefined' || context.renderOpts.collectedRevalidate >= INFINITE_CACHE ? false : context.renderOpts.collectedRevalidate;
const expire = typeof context.renderOpts.collectedExpire === 'undefined' || context.renderOpts.collectedExpire >= INFINITE_CACHE ? undefined : context.renderOpts.collectedExpire;
// Create the cache entry for the response.
const cacheEntry = {
value: {
kind: CachedRouteKind.APP_ROUTE,
status: response.status,
body: Buffer.from(await blob.arrayBuffer()),
headers
},
cacheControl: {
revalidate,
expire
}
};
return cacheEntry;
} else {
// send response without caching if not ISR
await sendResponse(nodeNextReq, nodeNextRes, response, context.renderOpts.pendingWaitUntil);
return null;
}
} catch (err) {
// if this is a background revalidate we need to report
// the request error here as it won't be bubbled
if (previousCacheEntry == null ? void 0 : previousCacheEntry.isStale) {
await routeModule.onRequestError(req, err, {
routerKind: 'App Router',
routePath: srcPage,
routeType: 'route',
revalidateReason: getRevalidateReason({
isRevalidate,
isOnDemandRevalidate
})
}, routerServerContext);
}
throw err;
}
};
const cacheEntry = await routeModule.handleResponse({
req,
nextConfig,
cacheKey,
routeKind: RouteKind.APP_ROUTE,
isFallback: false,
prerenderManifest,
isRoutePPREnabled: false,
isOnDemandRevalidate,
revalidateOnlyGenerated,
responseGenerator,
waitUntil: ctx.waitUntil
});
// we don't create a cacheEntry for ISR
if (!isIsr) {
return null;
}
if ((cacheEntry == null ? void 0 : (_cacheEntry_value = cacheEntry.value) == null ? void 0 : _cacheEntry_value.kind) !== CachedRouteKind.APP_ROUTE) {
var _cacheEntry_value1;
throw Object.defineProperty(new Error(`Invariant: app-route received invalid cache entry ${cacheEntry == null ? void 0 : (_cacheEntry_value1 = cacheEntry.value) == null ? void 0 : _cacheEntry_value1.kind}`), "__NEXT_ERROR_CODE", {
value: "E701",
enumerable: false,
configurable: true
});
}
if (!getRequestMeta(req, 'minimalMode')) {
res.setHeader('x-nextjs-cache', isOnDemandRevalidate ? 'REVALIDATED' : cacheEntry.isMiss ? 'MISS' : cacheEntry.isStale ? 'STALE' : 'HIT');
}
// Draft mode should never be cached
if (isDraftMode) {
res.setHeader('Cache-Control', 'private, no-cache, no-store, max-age=0, must-revalidate');
}
const headers = fromNodeOutgoingHttpHeaders(cacheEntry.value.headers);
if (!(getRequestMeta(req, 'minimalMode') && isIsr)) {
headers.delete(NEXT_CACHE_TAGS_HEADER);
}
// If cache control is already set on the response we don't
// override it to allow users to customize it via next.config
if (cacheEntry.cacheControl && !res.getHeader('Cache-Control') && !headers.get('Cache-Control')) {
headers.set('Cache-Control', getCacheControlHeader(cacheEntry.cacheControl));
}
await sendResponse(nodeNextReq, nodeNextRes, new Response(cacheEntry.value.body, {
headers,
status: cacheEntry.value.status || 200
}));
return null;
};
// TODO: activeSpan code path is for when wrapped by
// next-server can be removed when this is no longer used
if (activeSpan) {
await handleResponse(activeSpan);
} else {
await tracer.withPropagatedContext(req.headers, ()=>tracer.trace(BaseServerSpan.handleRequest, {
spanName: `${method} ${req.url}`,
kind: SpanKind.SERVER,
attributes: {
'http.method': method,
'http.target': req.url
}
}, handleResponse));
}
} catch (err) {
// if we aren't wrapped by base-server handle here
if (!activeSpan && !(err instanceof NoFallbackError)) {
await routeModule.onRequestError(req, err, {
routerKind: 'App Router',
routePath: normalizedSrcPage,
routeType: 'route',
revalidateReason: getRevalidateReason({
isRevalidate,
isOnDemandRevalidate
})
});
}
// rethrow so that we can handle serving error page
// If this is during static generation, throw the error again.
if (isIsr) throw err;
// Otherwise, send a 500 response.
await sendResponse(nodeNextReq, nodeNextRes, new Response(null, {
status: 500
}));
return null;
}
}
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