Paul Gschwendtner 67f65a9d25 refactor(dev-infra): improve type-safety of git client utility (#42468)
Currently the `GitClient` accepts a generic parameter for determining
whether the `githubToken` should be set or not. This worked fine so far
in terms of distinguishing between an authenticated and
non-authenticated git client instance, but if we intend to conditionally
show methods only for authenticated instances, the generic parameter
is not suitable.

This commit splits up the `GitClient` into two classes. One for
the base logic without any authorization, and a second class that
extends the base logic with authentication logic. i.e. the
`AuthenticatedGitClient`. This allows us to have specific methods only
for the authenticated instance. e.g.

  * `hasOauthScopes` has been moved to only exist for authenticated
    instances.
  * the GraphQL functionality within `gitClient.github` is not
    accessible for non-authenticated instances. GraphQL API requires
    authentication as per Github.

The initial motiviation for this was that we want to throw if
`hasOAuthScopes` is called without the Octokit instance having
a token configured. This should help avoiding issues as within
3b434ed94d
that prevented the caretaker process momentarily.

Additionally, the Git client has moved from `index.ts` to
`git-client.ts` for better discoverability in the codebase.

PR Close #42468
2021-06-03 14:34:33 -07:00

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TypeScript

/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {NgDevConfig} from '../../utils/config';
import {AuthenticatedGitClient} from '../../utils/git/authenticated-git-client';
import {CaretakerConfig} from '../config';
/** The BaseModule to extend modules for caretaker checks from. */
export abstract class BaseModule<Data> {
/** The singleton instance of the authenticated git client. */
protected git = AuthenticatedGitClient.get();
/** The data for the module. */
readonly data = this.retrieveData();
constructor(protected config: NgDevConfig<{caretaker: CaretakerConfig}>) {}
/** Asyncronously retrieve data for the module. */
protected abstract retrieveData(): Promise<Data>;
/** Print the information discovered for the module to the terminal. */
abstract printToTerminal(): Promise<void>;
}