我想为Firebase创建多个云功能，并从一个项目同时部署它们。我还想将每个函数分离到一个单独的文件中。目前，我可以创建多个函数，如果我把它们都放在index.js，如:
exports.foo = functions.database.ref('/foo').onWrite(event => {
...
});
exports.bar = functions.database.ref('/bar').onWrite(event => {
...
});
然而，我想把foo和酒吧在单独的文件。我试了一下:
/functions
|--index.js (blank)
|--foo.js
|--bar.js
|--package.json
foo.js在哪里
exports.foo = functions.database.ref('/foo').onWrite(event => {
...
});
bar.js是
exports.bar = functions.database.ref('/bar').onWrite(event => {
...
});
有没有一种方法可以在不把所有函数都放在index.js中的情况下实现这一点?
以上的答案为我指明了正确的方向，只是没有一个真正适合我。下面是一个工作原型，一个onCall, onRequest和数据库触发器的例子
foo.js - 随叫随到，随叫随到。
exports.handler = async function(data, context, admin) {
// const database = admin.database();
// const firestore = admin.firestore();
//...
};
bar.js - onRequest
exports.handler = async function(req, res, admin) {
// const database = admin.database();
// const firestore = admin.firestore();
//...
};
jar.js - trigger/document/onCreate .js
exports.handler = async function(snapshot, context, admin) {
// const database = admin.database();
// const firestore = admin.firestore();
//...
};
index.js
//导入firebase管理SDK依赖项
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
// import functions
const foo = require("./foo");
const bar = require("./bar");
const jar = require("./jar");
// onCall for foo.js
exports.foo = functions.https.onCall((data, context) => {
return foo.handler(data, context, admin);
});
// onRequest for bar.js
exports.bar = functions.https.onRequest((req, res) => {
return bar.handler(req, res, admin);
});
// document trigger for jar.js
exports.jar = functions.firestore
.document("parentCollection/{parentCollectionId}")
.onCreate((snapshot, context) => {
return jar.handler(snapshot, context, admin);
});
注意:你也可以创建一个子文件夹来存放你的各个函数
以上的答案为我指明了正确的方向，只是没有一个真正适合我。下面是一个工作原型，一个onCall, onRequest和数据库触发器的例子
foo.js - 随叫随到，随叫随到。
exports.handler = async function(data, context, admin) {
// const database = admin.database();
// const firestore = admin.firestore();
//...
};
bar.js - onRequest
exports.handler = async function(req, res, admin) {
// const database = admin.database();
// const firestore = admin.firestore();
//...
};
jar.js - trigger/document/onCreate .js
exports.handler = async function(snapshot, context, admin) {
// const database = admin.database();
// const firestore = admin.firestore();
//...
};
index.js
//导入firebase管理SDK依赖项
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
// import functions
const foo = require("./foo");
const bar = require("./bar");
const jar = require("./jar");
// onCall for foo.js
exports.foo = functions.https.onCall((data, context) => {
return foo.handler(data, context, admin);
});
// onRequest for bar.js
exports.bar = functions.https.onRequest((req, res) => {
return bar.handler(req, res, admin);
});
// document trigger for jar.js
exports.jar = functions.firestore
.document("parentCollection/{parentCollectionId}")
.onCreate((snapshot, context) => {
return jar.handler(snapshot, context, admin);
});
注意:你也可以创建一个子文件夹来存放你的各个函数
Node 8 LTS现在可以与Cloud/Firebase函数一起使用，您可以使用扩展操作符执行以下操作:
/ package.json
"engines": {
"node": "8"
},
/ index.js
const functions = require("firebase-functions");
const admin = require("firebase-admin");
admin.initializeApp();
module.exports = {
...require("./lib/foo.js"),
// ...require("./lib/bar.js") // add as many as you like
};
/lib/foo.js
const functions = require("firebase-functions");
const admin = require("firebase-admin");
exports.fooHandler = functions.database
.ref("/food/{id}")
.onCreate((snap, context) => {
let id = context.params["id"];
return admin
.database()
.ref(`/bar/${id}`)
.set(true);
});
Firebase文档现在已经更新了一个多文件代码组织的好指南:
文档>云功能>写功能>组织功能
总结:
foo.js
const functions = require('firebase-functions');
exports.foo = functions.https.onRequest((request, response) => {
// ...
});
bar.js
const functions = require('firebase-functions');
exports.bar = functions.https.onRequest((request, response) => {
// ...
});
index.js
const foo = require('./foo');
const bar = require('./bar');
exports.foo = foo.foo;
exports.bar = bar.bar;
我使用一个普通的JS引导加载器来自动包含我想使用的所有函数。
├── /functions
│ ├── /test/
│ │ ├── testA.js
│ │ └── testB.js
│ ├── index.js
│ └── package.json
index.js(引导)
/**
* The bootloader reads all directories (single level, NOT recursively)
* to include all known functions.
*/
const functions = require('firebase-functions');
const fs = require('fs')
const path = require('path')
fs.readdirSync(process.cwd()).forEach(location => {
if (!location.startsWith('.')) {
location = path.resolve(location)
if (fs.statSync(location).isDirectory() && path.dirname(location).toLowerCase() !== 'node_modules') {
fs.readdirSync(location).forEach(filepath => {
filepath = path.join(location, filepath)
if (fs.statSync(filepath).isFile() && path.extname(filepath).toLowerCase() === '.js') {
Object.assign(exports, require(filepath))
}
})
}
}
})
这个例子index.js文件只在根目录中自动包含目录。它可以扩展到walk目录，honor .gitignore等。不过这对我来说已经足够了。
有了索引文件，添加新函数就很简单了。
/测试/ testA.js
const functions = require('firebase-functions');
exports.helloWorld = functions.https.onRequest((request, response) => {
response.send("Hello from Firebase!");
});
/测试/ testB.js
const functions = require('firebase-functions');
exports.helloWorld2 = functions.https.onRequest((request, response) => {
response.send("Hello again, from Firebase!");
});
NPM运行服务产生:
λ ~/Workspace/Ventures/Author.io/Firebase/functions/ npm run serve
> functions@ serve /Users/cbutler/Workspace/Ventures/Author.io/Firebase/functions
> firebase serve --only functions
=== Serving from '/Users/cbutler/Workspace/Ventures/Author.io/Firebase'...
i functions: Preparing to emulate functions.
Warning: You're using Node.js v9.3.0 but Google Cloud Functions only supports v6.11.5.
✔ functions: helloWorld: http://localhost:5000/authorio-ecorventures/us-central1/helloWorld
✔ functions: helloWorld2: http://localhost:5000/authorio-ecorventures/us-central1/helloWorld2
这个工作流程基本上就是“编写并运行”，而不必在每次添加/修改/删除新函数/文件时修改index.js文件。
