Merge branch 'master' of github.com:spotify/backstage into mob/docusaurus-structure
This commit is contained in:
Ivan Shmidt
@@ -14,9 +14,10 @@ like GitHub.
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### Getting Started
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The Software Templates are available under `/create`, and if you've followed
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[Getting Started with Backstage](../../getting-started), you should be able to
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reach `http://localhost:3000/create`.
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The Software Templates are available under `/create`. If you've followed
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[Installing in your Backstage App](./installation.md) in your separate App or
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[Getting Started with Backstage](../../getting-started) for this repo, you
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should be able to reach `http://localhost:3000/create`.
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You should get something that looks similar to this:
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@@ -34,7 +35,7 @@ internally.
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After filling in these variables, you'll get some more fields to fill out which
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are required for backstage usage. The owner, which is a `user` in the backstage
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system, and the `storePath` which right now must be a Github Organisation and a
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non-existing github repository name in the format `organistaion/reponame`.
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non-existing github repository name in the format `organisation/reponame`.
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@@ -0,0 +1,194 @@
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# Installing in your Backstage App
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The scaffolder plugin comes in two packages, `@backstage/plugin-scaffolder` and
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`@backstage/plugin-scaffolder-backend`. Each has their own installation steps,
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outlined below.
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The Scaffolder plugin also depends on the Software Catalog. Instructions for how
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to set that up can be found [here](../software-catalog/installation.md).
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## Installing @backstage/plugin-scaffolder
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> **Note that if you used `npx @backstage/create-app`, the plugin may already be
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> present**
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The scaffolder frontend plugin should be installed in your `app` package, which
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is created as a part of `@backstage/create-app`. To install the package, run:
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```bash
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cd packages/app
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yarn add @backstage/plugin-scaffolder
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```
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Make sure the version of `@backstage/plugin-scaffolder` matches the version of
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other `@backstage` packages. You can update it in `packages/app/package.json` if
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it doesn't.
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### Adding the Plugin to your `packages/app`
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Add the following entry to the head of your `packages/app/src/plugins.ts`:
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```ts
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export { plugin as ScaffolderPlugin } from '@backstage/plugin-scaffolder';
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```
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Add the following to your `packages/app/src/apis.ts`:
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```ts
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import { scaffolderApiRef, ScaffolderApi } from '@backstage/plugin-scaffolder';
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// Inside the ApiRegistry builder function ...
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builder.add(
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scaffolderApiRef,
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new ScaffolderApi({
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apiOrigin: backendUrl,
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basePath: '/scaffolder/v1',
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}),
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);
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```
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Where `backendUrl` is the `backend.baseUrl` from config, i.e.
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`const backendUrl = config.getString('backend.baseUrl')`.
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This is all that is needed for the frontend part of the Scaffolder plugin to
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work!
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## Installing @backstage/plugin-scaffolder-backend
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> **Note that if you used `npx @backstage/create-app`, the plugin may already be
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> present**
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The scaffolder backend should be installed in your `backend` package, which is
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created as a part of `@backstage/create-app`. To install the package, run:
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```bash
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cd packages/backend
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yarn add @backstage/plugin-scaffolder-backend
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```
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Make sure the version of `@backstage/plugin-scaffolder-backend` matches the
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version of other `@backstage` packages. You can update it in
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`packages/backend/package.json` if it doesn't.
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### Adding the Plugin to your `packages/backend`
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You'll need to add the plugin to the `backend`'s router. You can do this by
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creating a file called `packages/backend/src/plugins/scaffolder.ts` with the
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following contents to get you up and running quickly.
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```ts
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import {
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CookieCutter,
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createRouter,
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FilePreparer,
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GithubPreparer,
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Preparers,
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GithubPublisher,
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CreateReactAppTemplater,
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Templaters,
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} from '@backstage/plugin-scaffolder-backend';
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import { Octokit } from '@octokit/rest';
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import type { PluginEnvironment } from '../types';
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import Docker from 'dockerode';
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export default async function createPlugin({ logger }: PluginEnvironment) {
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const cookiecutterTemplater = new CookieCutter();
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const craTemplater = new CreateReactAppTemplater();
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const templaters = new Templaters();
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// Register default templaters
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templaters.register('cookiecutter', cookiecutterTemplater);
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templaters.register('cra', craTemplater);
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const filePreparer = new FilePreparer();
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const githubPreparer = new GithubPreparer();
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const preparers = new Preparers();
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// Register default preparers
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preparers.register('file', filePreparer);
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preparers.register('github', githubPreparer);
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// Create Github client with your access token from environment variables
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const githubClient = new Octokit({ auth: process.env.GITHUB_ACCESS_TOKEN });
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const publisher = new GithubPublisher({ client: githubClient });
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const dockerClient = new Docker();
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return await createRouter({
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preparers,
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templaters,
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publisher,
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logger,
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dockerClient,
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});
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}
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```
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Once the `scaffolder.ts` router setup file is in place, add the router to
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`packages/backend/src/index.ts`:
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```ts
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import scaffolder from './plugins/scaffolder';
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const scaffolderEnv = useHotMemoize(module, () => createEnv('scaffolder'));
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const service = createServiceBuilder(module)
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.loadConfig(configReader)
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/** several different routers */
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.addRouter('/scaffolder', await scaffolder(scaffolderEnv));
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```
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### Adding Templates
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At this point the scaffolder backend is installed in your backend package, but
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you will not have any templates available to use. These need to be added to the
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software catalog, as they are represented as entities of kind
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[Template](/docs/features/software-catalog/descriptor-format.md#kind-template).
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You can find out more about adding templates [here](./adding-templates.md).
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To get up and running and try out some templates quickly, you can add some of
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our example templates through static configuration. Add the following to the
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`catalog.locations` section in your `app-config.yaml`:
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```yaml
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catalog:
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locations:
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# Backstage Example Templates
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- type: github
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target: https://github.com/spotify/backstage/blob/master/plugins/scaffolder-backend/sample-templates/react-ssr-template/template.yaml
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- type: github
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target: https://github.com/spotify/backstage/blob/master/plugins/scaffolder-backend/sample-templates/springboot-grpc-template/template.yaml
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- type: github
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target: https://github.com/spotify/backstage/blob/master/plugins/scaffolder-backend/sample-templates/create-react-app/template.yaml
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- type: github
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target: https://github.com/spotify/cookiecutter-golang/blob/master/template.yaml
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```
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### Runtime Dependencies
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For the scaffolder backend plugin to function, it needs a GitHub access token,
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and access to a running Docker daemon. You can create a GitHub access token
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[here](https://github.com/settings/tokens/new), select `repo` scope only. Full
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docs on creating private GitHub access tokens is available
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[here](https://docs.github.com/en/github/authenticating-to-github/creating-a-personal-access-token).
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Note that the need for private GitHub access tokens will be replaced with GitHub
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Apps integration further down the line.
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> **Right now it is only possible to scaffold repositories inside GitHub
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> organizations, and not under personal accounts.**
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The GitHub access token is passed along using the `GITHUB_ACCESS_TOKEN`
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environment variable.
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### Running the Backend
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Finally, make sure you have a local Docker daemon running, and start up the
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backend with the new configuration:
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```bash
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cd packages/backend
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GITHUB_ACCESS_TOKEN=<token> yarn start
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```
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If you've also set up the frontend plugin, so you should be ready to go browse
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the templates at [localhost:3000/create](http://localhost:3000/create) now!
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