使用 Firebase 云功能为带有 i18n 的 Angular 10 s-s-r 通用应用程序提供服务
Posted
技术标签:
【中文标题】使用 Firebase 云功能为带有 i18n 的 Angular 10 s-s-r 通用应用程序提供服务【英文标题】:Serving an angular 10 s-s-r universal app with i18n using firebase cloud functions 【发布时间】:2020-12-13 05:06:28 【问题描述】:我正在开发一个 monorepo 项目,使用 angular 10 和 nx(托管在 firebase 上)由 3 个应用程序组成:网站、应用程序和管理员。 网站和应用使用内置的 @angular/localize 包进行国际化。
现在,我正在网站中实现 Angular Universal,但每次尝试从我的域访问任何 URL 时,我的 https 云功能都会超时。
这是我到目前为止所做的:
在 /apps/website/src 中添加了 main.server.tsimport '@angular/localize/init';
import enableProdMode from '@angular/core';
import environment from './environments/environment';
if (environment.production)
enableProdMode();
export AppServerModule from './app/app.server.module';
export renderModule, renderModuleFactory from '@angular/platform-server';
在 apps/website/src/app 中添加了 app.server.module.ts
import NgModule from '@angular/core';
import ServerModule from '@angular/platform-server';
import AppModule from './app.module';
import AppComponent from './app.component';
@NgModule(
imports: [
AppModule,
ServerModule
],
bootstrap: [AppComponent]
)
export class AppServerModule
在 /apps/website 中添加了 tsconfig.server.json
"extends": "./tsconfig.app.json",
"compilerOptions":
"outDir": "../../dist/out-tsc-server",
"module": "commonjs",
"types": [
"node"
]
,
"files": [
"src/main.server.ts",
"server.ts"
],
"angularCompilerOptions":
"entryModule": "./src/app/app.server.module#AppServerModule"
在 /apps/website 中添加了 server.js
import 'zone.js/dist/zone-node';
import ngExpressEngine from '@nguniversal/express-engine';
import * as express from 'express';
import join from 'path';
import AppServerModule from './src/main.server';
import APP_BASE_HREF from '@angular/common';
import LOCALE_ID from '@angular/core';
// The Express app is exported so that it can be used by serverless Functions.
// I pass a locale argument to fetch the correct i18n app in the browser folder
export function app(locale: string): express.Express
const server = express();
// get the correct locale client app path for the server
const distFolder = join(process.cwd(), `apps/functions/dist/website/browser/$locale`);
// Our Universal express-engine (found @ https://github.com/angular/universal/tree/master/modules/express-engine)
server.engine(
'html',
ngExpressEngine(
bootstrap: AppServerModule,
providers: [provide: LOCALE_ID, useValue: locale] // define locale_id for the server
)
);
server.set('views', distFolder);
server.set('view engine', 'html');
// For static files
server.get(
'*.*',
express.static(distFolder,
maxAge: '1y',
)
);
// For route paths
// All regular routes use the Universal engine
server.get('*', (req, res) =>
// this line always shows up in the cloud function logs
console.log(`serving request, with locale $locale, base url: $req.baseUrl, accept-language: $req.headers["accept-language"]`);
res.render('index.html',
req,
providers: [ provide: APP_BASE_HREF, useValue: req.baseUrl ]
);
);
return server;
// only used for testing in dev mode
function run(): void
const port = process.env.PORT || 4000;
// Start up the Node server
const appFr = app('fr');
const appEn = app('en');
const server = express();
server.use('/fr', appFr);
server.use('/en', appEn);
server.use('', appEn);
server.listen(port, () =>
console.log(`Node Express server listening on http://localhost:$port`);
);
// Webpack will replace 'require' with '__webpack_require__'
// '__non_webpack_require__' is a proxy to Node 'require'
// The below code is to ensure that the server is run only when not requiring the bundle.
declare const __non_webpack_require__: NodeRequire;
const mainModule = __non_webpack_require__.main;
const moduleFilename = (mainModule && mainModule.filename) || '';
if (moduleFilename === __filename || moduleFilename.includes('iisnode'))
console.log('running server');
run();
export * from './src/main.server';
在 /apps/functions/src/app/s-s-r-website 中添加了 index.ts 以定义将要部署的云功能:
import * as functions from 'firebase-functions';
const express = require("express");
const getTranslatedServer = (lang) =>
const translatedServer = require(`../../../dist/website/server/$lang/main`);
return translatedServer.app(lang);
;
const appSsrEn = getTranslatedServer('en');
const appSsrFr = getTranslatedServer('fr');
// dispatch, as a proxy, the translated server app function to their coresponding url
const server = express();
server.use("/", appSsrEn); // use english version as default
server.use("/fr", appSsrFr);
server.use("/en", appSsrEn);
export const globalSsr = functions.https.onRequest(server);
为了构建我的 s-s-r 应用程序,我使用以下 npm 命令:
npm run deploy:pp:functions
来自我的 package.json:
...
"build:ppasprod:all-locales:website": "npm run fb:env:pp && ng build website -c=prod-core-optim,prod-budgets,pp-file-replace,all-locales",
"build:s-s-r:website": "npm run build:ppasprod:all-locales:website && ng run website:server:production",
"predeploy:website:functions": "nx workspace-lint && ng lint functions && node apps/functions/src/app/cp-universal.ts && ng build functions -c=production",
"deploy:pp:functions": "npm run fb:env:pp && npm run build:s-s-r:website && npm run predeploy:website:functions && firebase deploy --only functions:universal-globalSsr"
...
基本上,它会构建 s-s-r 应用程序,复制 apps/functions 中的 dist/website 文件夹,构建云函数,然后将其部署到 firebase。
这是用于配置的 angular.json:
"projects":
"website":
"i18n":
"locales":
"fr": "apps/website/src/locale/messages.fr.xlf",
"en": "apps/website/src/locale/messages.en.xlf"
,
"projectType": "application",
"schematics":
"@nrwl/angular:component":
"style": "scss"
,
"root": "apps/website",
"sourceRoot": "apps/website/src",
"prefix": "",
"architect":
"build":
"builder": "@angular-devkit/build-angular:browser",
"options":
"outputPath": "dist/website/browser",
"deleteOutputPath": false,
"index": "apps/website/src/index.html",
"main": "apps/website/src/main.ts",
"polyfills": "apps/website/src/polyfills.ts",
"tsConfig": "apps/website/tsconfig.app.json",
"aot": true,
"assets": [
"apps/website/src/assets",
"input": "libs/assets/src/lib",
"glob": "**/*",
"output": "./assets"
],
"styles": [
"apps/website/src/styles.scss",
"libs/styles/src/lib/styles.scss"
],
"scripts": [],
"stylePreprocessorOptions":
"includePaths": ["libs/styles/src/lib/"]
,
"configurations":
"devlocal":
"budgets": [
"type": "anyComponentStyle",
"maximumWarning": "6kb"
]
,
"all-locales":
"localize": ["en", "fr"]
,
"pp-core-optim":
"optimization": false,
"i18nMissingTranslation": "error",
"sourceMap": true,
"statsJson": true
,
"pp-file-replace":
"fileReplacements": [
"replace": "apps/website/src/environments/environment.ts",
"with": "apps/website/src/environments/environment.pp.ts"
]
,
"prod-budgets":
"budgets": [
"type": "initial",
"maximumWarning": "2mb",
"maximumError": "5mb"
,
"type": "anyComponentStyle",
"maximumWarning": "6kb",
"maximumError": "10kb"
]
,
"prod-core-optim":
"i18nMissingTranslation": "error",
"optimization": true,
"outputHashing": "all",
"sourceMap": false,
"extractCss": true,
"namedChunks": false,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true
,
"extract-i18n":
"builder": "@angular-devkit/build-angular:extract-i18n",
"options":
"browserTarget": "website:build"
,
"server":
"builder": "@angular-devkit/build-angular:server",
"options":
"outputPath": "dist/website/server",
"main": "apps/website/server.ts",
"tsConfig": "apps/website/tsconfig.server.json",
"externalDependencies": ["@firebase/firestore"],
"stylePreprocessorOptions":
"includePaths": ["libs/styles/src/lib/"]
,
"configurations":
"production":
"outputHashing": "media",
"fileReplacements": [
"replace": "apps/website/src/environments/environment.ts",
"with": "apps/website/src/environments/environment.prod.ts"
],
"sourceMap": false,
"optimization": true,
"localize": ["en", "fr"]
,
"serve-s-s-r":
"builder": "@nguniversal/builders:s-s-r-dev-server",
"options":
"browserTarget": "website:build",
"serverTarget": "website:server"
,
"configurations":
"production":
"browserTarget": "website:build:production",
"serverTarget": "website:server:production"
,
"prerender":
"builder": "@nguniversal/builders:prerender",
"options":
"browserTarget": "website:build:production",
"serverTarget": "website:server:production",
"routes": ["/"]
,
"configurations":
"production":
一旦构建完成,一个 /dist 文件夹就被创建了,其结构如下:
dist/
└───website/
│ └───browser/
│ │ └───en/
│ │ └───fr/
│ └───server/
│ └───en/
│ └───fr/
在将 dist/website/browser 上传到主机之前,我删除了 /dist/website/browser/en 和 /dist/website/browser/fr 中的 index.html 文件 确保主机服务于 https 功能(而不是 index.html 文件)。
最后,这是我对 firebase (firebase.json) 的配置:
...
"hosting": [
...
"target": "website",
"public": "dist/website/browser",
"ignore": ["firebase.json", "**/.*", "**/node_modules/**"],
"rewrites": [
"source": "**",
"function": "universal-globalSsr"
]
,
...
],
...
如前所述,一切都按预期构建、打包和部署。一旦我尝试访问https://www.my-domaine.com/fr/,我的函数就会被执行,但我的日志中出现服务器超时,没有任何错误。 如果我尝试访问不存在的 url(例如:https://www.my-domaine.com/fr/foo),我会收到错误消息“无法匹配任何路由。URL 段:'foo'”,然后超时。
此时,我不知道我的代码或/和我的项目配置有什么问题。 任何帮助将不胜感激。
【问题讨论】:
这是一个相当不错的设置。功能是否正确完成?您是否检查过您的 App Engine 超时设置?我想说添加更多日志记录并简化您的应用程序以缩小问题范围。 函数执行仅在1分钟后超时完成。似乎 res.render 函数没有返回任何内容。顺便说一下,在 res.render 之前声明的 console.log 会打印在日志中。我已经使用通用和 firebase 制作了一个简单的 poc。该应用程序仅包含两条简单的路线。它按预期工作。服务器返回一个带有渲染 html 的页面。在这个项目中,还有 i18n。似乎问题来自本地化配置。我已经做了几处更改,看看是否有任何更改,但没有成功。 函数日志中还有其他内容吗?res.render
从不执行?如果你在console.log
之后添加它会出现在日志中吗?
@EmilGi 是的,放在后面的 console.log 也会出现在日志中。
我能问一下你有哪些包版本,你能得到firebase serve
来加载路由吗?您使用的是哪个版本的 firebase 和 angularfire?
【参考方案1】:
对于那些在使用带有 Firebase 的 Angular Universal 时服务器陷入无限加载状态的人,我的问题来自我的应用程序中的特定 Firestore 请求
在我的项目中,我将 @angular/fire 与 Rxjs 一起使用。在应用程序初始化时,我正在我的一项服务中请求预缓存配置对象,类似于:
this.afs
.collection<MyObject>(this.cl.COLLECTION_NAME_OBJECT)
.snapshotChanges()
.pipe(
map((actions) =>
actions.map((a) =>
const data = a.payload.doc.data() as MyObject;
const id = a.payload.doc.ref;
return id, ...data ;
)
),
take(1)
)
.subscribe((objects: MyObjects[]) =>
this.myObjects = objects;
);
管道中的take(1)
操作员出于某种原因负责控制服务器端。删除take(1)
解决了这个问题。
我发现了这个问题,某些特定类型的 firestore 请求正在破坏 s-s-r(有关此事的更多信息):https://github.com/angular/angularfire/issues/2420
【讨论】:
以上是关于使用 Firebase 云功能为带有 i18n 的 Angular 10 s-s-r 通用应用程序提供服务的主要内容,如果未能解决你的问题,请参考以下文章
firebase 云功能中带有 typescript 的 firebase-admin
从一个信号触发的 Firebase 云功能发送 voip 推送通知
带有 Firebase 云消息传递的 Flutter 2.0:onMessage 未在 Android 上调用
如何在 Express 中使用带有 Firebase 功能的 webpack-hot-server-middleware