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?
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。
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;
啊，Firebase负载节点模块的云函数通常，所以这是有效的
结构:
/functions
|--index.js
|--foo.js
|--bar.js
|--package.json
index.js:
const functions = require('firebase-functions');
const fooModule = require('./foo');
const barModule = require('./bar');
exports.foo = functions.database.ref('/foo').onWrite(fooModule.handler);
exports.bar = functions.database.ref('/bar').onWrite(barModule.handler);
foo.js:
exports.handler = (event) => {
...
};
bar.js:
exports.handler = (event) => {
...
};
为了保持简单(但能完成工作)，我个人是这样构造我的代码的。
布局
├── /src/
│ ├── index.ts
│ ├── foo.ts
│ ├── bar.ts
└── package.json
foo.ts
export const fooFunction = functions.database()......... {
//do your function.
}
export const someOtherFunction = functions.database().......... {
// do the thing.
}
bar.ts
export const barFunction = functions.database()......... {
//do your function.
}
export const anotherFunction = functions.database().......... {
// do the thing.
}
index.ts
import * as fooFunctions from './foo';
import * as barFunctions from './bar';
module.exports = {
...fooFunctions,
...barFunctions,
};
适用于任何嵌套级别的目录。也只需遵循目录中的模式即可。
