next
Version:
The React Framework
302 lines (301 loc) • 12.1 kB
JavaScript
import { byteLength } from "./api-utils/web";
import BaseServer, { NoFallbackError } from "./base-server";
import { generateETag } from "./lib/etag";
import { addRequestMeta } from "./request-meta";
import WebResponseCache from "./response-cache/web";
import { isAPIRoute } from "../lib/is-api-route";
import { getPathMatch } from "../shared/lib/router/utils/path-match";
import getRouteFromAssetPath from "../shared/lib/router/utils/get-route-from-asset-path";
import { normalizeLocalePath } from "../shared/lib/i18n/normalize-locale-path";
import { removeTrailingSlash } from "../shared/lib/router/utils/remove-trailing-slash";
import { isDynamicRoute } from "../shared/lib/router/utils";
import { interpolateDynamicPath, normalizeVercelUrl } from "./server-utils";
import { getNamedRouteRegex } from "../shared/lib/router/utils/route-regex";
import { IncrementalCache } from "./lib/incremental-cache";
export default class NextWebServer extends BaseServer {
constructor(options){
super(options);
// Extend `renderOpts`.
Object.assign(this.renderOpts, options.webServerConfig.extendRenderOpts);
}
handleCompression() {
// For the web server layer, compression is automatically handled by the
// upstream proxy (edge runtime or node server) and we can simply skip here.
}
getIncrementalCache({ requestHeaders }) {
const dev = !!this.renderOpts.dev;
// incremental-cache is request specific
// although can have shared caches in module scope
// per-cache handler
return new IncrementalCache({
dev,
requestHeaders,
requestProtocol: "https",
appDir: this.hasAppDir,
allowedRevalidateHeaderKeys: this.nextConfig.experimental.allowedRevalidateHeaderKeys,
minimalMode: this.minimalMode,
fetchCache: this.nextConfig.experimental.appDir,
fetchCacheKeyPrefix: this.nextConfig.experimental.fetchCacheKeyPrefix,
maxMemoryCacheSize: this.nextConfig.experimental.isrMemoryCacheSize,
flushToDisk: false,
CurCacheHandler: this.serverOptions.webServerConfig.incrementalCacheHandler,
getPrerenderManifest: ()=>this.getPrerenderManifest()
});
}
getResponseCache() {
return new WebResponseCache(this.minimalMode);
}
getCustomRoutes() {
return {
headers: [],
rewrites: {
fallback: [],
afterFiles: [],
beforeFiles: []
},
redirects: []
};
}
async run(req, res, parsedUrl) {
super.run(req, res, parsedUrl);
}
async hasPage(page) {
return page === this.serverOptions.webServerConfig.page;
}
getPublicDir() {
// Public files are not handled by the web server.
return "";
}
getBuildId() {
return this.serverOptions.webServerConfig.extendRenderOpts.buildId;
}
loadEnvConfig() {
// The web server does not need to load the env config. This is done by the
// runtime already.
}
getHasAppDir() {
return this.serverOptions.webServerConfig.pagesType === "app";
}
getHasStaticDir() {
return false;
}
async getFallback() {
return "";
}
getFontManifest() {
return undefined;
}
getPagesManifest() {
return {
// keep same theme but server path doesn't need to be accurate
[this.serverOptions.webServerConfig.normalizedPage]: `server${this.serverOptions.webServerConfig.page}.js`
};
}
getAppPathsManifest() {
const page = this.serverOptions.webServerConfig.page;
return {
[this.serverOptions.webServerConfig.page]: `app${page}.js`
};
}
getFilesystemPaths() {
return new Set();
}
attachRequestMeta(req, parsedUrl) {
addRequestMeta(req, "__NEXT_INIT_QUERY", {
...parsedUrl.query
});
}
getPrerenderManifest() {
var _this_renderOpts;
const { prerenderManifest } = this.serverOptions.webServerConfig;
if (((_this_renderOpts = this.renderOpts) == null ? void 0 : _this_renderOpts.dev) || !prerenderManifest) {
return {
version: -1,
routes: {},
dynamicRoutes: {},
notFoundRoutes: [],
preview: {
previewModeId: "development-id"
}
};
}
return prerenderManifest;
}
getNextFontManifest() {
return this.serverOptions.webServerConfig.extendRenderOpts.nextFontManifest;
}
async normalizeNextData(req, res, parsedUrl) {
const middleware = this.getMiddleware();
const params = getPathMatch("/_next/data/:path*")(parsedUrl.pathname);
// Make sure to 404 for /_next/data/ itself and
// we also want to 404 if the buildId isn't correct
if (!params || !params.path || params.path[0] !== this.buildId) {
await this.render404(req, res, parsedUrl);
return {
finished: true
};
}
// remove buildId from URL
params.path.shift();
const lastParam = params.path[params.path.length - 1];
// show 404 if it doesn't end with .json
if (typeof lastParam !== "string" || !lastParam.endsWith(".json")) {
await this.render404(req, res, parsedUrl);
return {
finished: true
};
}
// re-create page's pathname
let pathname = `/${params.path.join("/")}`;
pathname = getRouteFromAssetPath(pathname, ".json");
// ensure trailing slash is normalized per config
if (middleware) {
if (this.nextConfig.trailingSlash && !pathname.endsWith("/")) {
pathname += "/";
}
if (!this.nextConfig.trailingSlash && pathname.length > 1 && pathname.endsWith("/")) {
pathname = pathname.substring(0, pathname.length - 1);
}
}
if (this.nextConfig.i18n) {
var _this_i18nProvider;
const { host } = (req == null ? void 0 : req.headers) || {};
// remove port from host and remove port if present
const hostname = host == null ? void 0 : host.split(":")[0].toLowerCase();
const localePathResult = normalizeLocalePath(pathname, this.nextConfig.i18n.locales);
const domainLocale = (_this_i18nProvider = this.i18nProvider) == null ? void 0 : _this_i18nProvider.detectDomainLocale(hostname);
let detectedLocale = "";
if (localePathResult.detectedLocale) {
pathname = localePathResult.pathname;
detectedLocale = localePathResult.detectedLocale;
}
parsedUrl.query.__nextLocale = detectedLocale;
parsedUrl.query.__nextDefaultLocale = (domainLocale == null ? void 0 : domainLocale.defaultLocale) || this.nextConfig.i18n.defaultLocale;
if (!detectedLocale && !middleware) {
parsedUrl.query.__nextLocale = parsedUrl.query.__nextDefaultLocale;
await this.render404(req, res, parsedUrl);
return {
finished: true
};
}
}
parsedUrl.pathname = pathname;
parsedUrl.query.__nextDataReq = "1";
return {
finished: false
};
}
async handleCatchallRenderRequest(req, res, parsedUrl) {
let { pathname , query } = parsedUrl;
if (!pathname) {
throw new Error("pathname is undefined");
}
// interpolate query information into page for dynamic route
// so that rewritten paths are handled properly
const normalizedPage = this.serverOptions.webServerConfig.normalizedPage;
if (pathname !== normalizedPage) {
pathname = normalizedPage;
if (isDynamicRoute(pathname)) {
const routeRegex = getNamedRouteRegex(pathname, false);
pathname = interpolateDynamicPath(pathname, query, routeRegex);
normalizeVercelUrl(req, true, Object.keys(routeRegex.routeKeys), true, routeRegex);
}
}
// next.js core assumes page path without trailing slash
pathname = removeTrailingSlash(pathname);
if (this.i18nProvider) {
const { detectedLocale } = await this.i18nProvider.analyze(pathname);
if (detectedLocale) {
parsedUrl.query.__nextLocale = detectedLocale;
}
}
const bubbleNoFallback = !!query._nextBubbleNoFallback;
if (isAPIRoute(pathname)) {
delete query._nextBubbleNoFallback;
}
try {
await this.render(req, res, pathname, query, parsedUrl, true);
return {
finished: true
};
} catch (err) {
if (err instanceof NoFallbackError && bubbleNoFallback) {
return {
finished: false
};
}
throw err;
}
}
// Edge API requests are handled separately in minimal mode.
async handleApiRequest() {
return false;
}
renderHTML(req, res, pathname, query, renderOpts) {
const { renderToHTML } = this.serverOptions.webServerConfig;
if (!renderToHTML) {
throw new Error("Invariant: routeModule should be configured when rendering pages");
}
return renderToHTML(req, res, pathname, query, Object.assign(renderOpts, {
disableOptimizedLoading: true,
runtime: "experimental-edge"
}));
}
async sendRenderResult(_req, res, options) {
res.setHeader("X-Edge-Runtime", "1");
// Add necessary headers.
// @TODO: Share the isomorphic logic with server/send-payload.ts.
if (options.poweredByHeader && options.type === "html") {
res.setHeader("X-Powered-By", "Next.js");
}
if (!res.getHeader("Content-Type")) {
res.setHeader("Content-Type", options.result.contentType ? options.result.contentType : options.type === "json" ? "application/json" : "text/html; charset=utf-8");
}
if (options.result.isDynamic) {
const writer = res.transformStream.writable.getWriter();
let innerClose;
const target = {
write: (chunk)=>writer.write(chunk),
end: ()=>writer.close(),
on (_event, cb) {
innerClose = cb;
},
off (_event, _cb) {
innerClose = undefined;
}
};
const onClose = ()=>{
innerClose == null ? void 0 : innerClose();
};
// No, this cannot be replaced with `finally`, because early cancelling
// the stream will create a rejected promise, and finally will create an
// unhandled rejection.
writer.closed.then(onClose, onClose);
options.result.pipe(target);
} else {
const payload = await options.result.toUnchunkedString();
res.setHeader("Content-Length", String(byteLength(payload)));
if (options.generateEtags) {
res.setHeader("ETag", generateETag(payload));
}
res.body(payload);
}
res.send();
}
async runApi() {
// @TODO
return true;
}
async findPageComponents({ pathname , query , params }) {
const result = await this.serverOptions.webServerConfig.loadComponent(pathname);
if (!result) return null;
return {
query: {
...query || {},
...params || {}
},
components: result
};
}
}
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