feat: support Bearer auth header at git commands

Support Bearer-based Authorization header for auth
with token only (no username).

Signed-off-by: Patrick Jungermann <Patrick.Jungermann@gmail.com>

plugins/scaffolder-backend/src/scaffolder/actions/builtin/helpers.test.ts

@@ -33,8 +33,6 @@ jest.mock('@backstage/backend-common', () => ({
 }));
 
 const mockedGit = Git.fromAuth({
-  username: 'test-user',
-  password: 'test-password',
   logger: getVoidLogger(),
 });
 
@@ -101,6 +99,22 @@ describe('initRepoAndPush', () => {
     });
   });
 
+  it('with token', async () => {
+    await initRepoAndPush({
+      dir: '/test/repo/dir/',
+      remoteUrl: 'git@github.com:test/repo.git',
+      auth: {
+        token: 'test-token',
+      },
+      logger: getVoidLogger(),
+    });
+
+    expect(mockedGit.init).toHaveBeenCalledWith({
+      dir: '/test/repo/dir/',
+      defaultBranch: 'master',
+    });
+  });
+
   it('allows overriding the default branch', async () => {
     await initRepoAndPush({
       dir: '/test/repo/dir/',

plugins/scaffolder-backend/src/scaffolder/actions/builtin/helpers.ts

@@ -83,15 +83,17 @@ export async function initRepoAndPush({
 }: {
   dir: string;
   remoteUrl: string;
-  auth: { username: string; password: string };
+  // For use cases where token has to be used with Basic Auth
+  // it has to be provided as password together with a username
+  // which may be a fixed value defined by the provider.
+  auth: { username: string; password: string } | { token: string };
   logger: Logger;
   defaultBranch?: string;
   commitMessage?: string;
   gitAuthorInfo?: { name?: string; email?: string };
 }): Promise<void> {
   const git = Git.fromAuth({
-    username: auth.username,
-    password: auth.password,
+    ...auth,
     logger,
   });
 
@@ -137,7 +139,10 @@ export async function commitAndPushRepo({
   remoteRef,
 }: {
   dir: string;
-  auth: { username: string; password: string };
+  // For use cases where token has to be used with Basic Auth
+  // it has to be provided as password together with a username
+  // which may be a fixed value defined by the provider.
+  auth: { username: string; password: string } | { token: string };
   logger: Logger;
   commitMessage: string;
   gitAuthorInfo?: { name?: string; email?: string };
@@ -145,8 +150,7 @@ export async function commitAndPushRepo({
   remoteRef?: string;
 }): Promise<void> {
   const git = Git.fromAuth({
-    username: auth.username,
-    password: auth.password,
+    ...auth,
     logger,
   });