feat(source): checkout via reference

- provide source tool ability to checkout commit hash

Change-Id: Ic3b101a4877fd89516df8c4814802780a15e2461

armada/tests/unit/utils/test_source.py

@@ -23,12 +23,14 @@ class GitTestCase(unittest.TestCase):
 
     SOURCE_UTILS_LOCATION = 'armada.utils.source'
 
+    @mock.patch('armada.utils.source.Git')
     @mock.patch('armada.utils.source.tempfile')
     @mock.patch('armada.utils.source.Repo')
-    def test_git_clone_good_url(self, mock_git_repo, mock_temp):
+    def test_git_clone_good_url(self, mock_git_repo, mock_temp, mock_git_lib):
         mock_temp.mkdtemp.return_value = '/tmp/armada'
-        mock_git_repo.clone_from.return_value = "Repository"
+        mock_git_lib.checkout.return_value = "Repository"
         url = 'http://github.com/att-comdev/armada'
+
         dir = source.git_clone(url)
 
         self.assertIsNotNone(dir)

armada/utils/source.py

@@ -20,6 +20,7 @@ import tarfile
 import tempfile
 
 from git import Repo
+from git import Git
 
 from ..exceptions import source_exceptions
 
@@ -38,7 +39,9 @@ def git_clone(repo_url, branch='master'):
     _tmp_dir = tempfile.mkdtemp(prefix='armada')
 
     try:
-        Repo.clone_from(repo_url, _tmp_dir, **{'branch': branch})
+        repo = Repo.clone_from(repo_url, _tmp_dir, **{'branch': 'master'})
+        g = Git(repo.working_dir)
+        g.checkout(branch)
     except Exception:
         raise source_exceptions.GitLocationException(repo_url)
 

examples/simple.yaml

@@ -13,7 +13,7 @@ data:
     type: git
     location: https://github.com/gardlt/hello-world-chart
     subpath: .
-    reference: master
+    reference: 87aad18f7d8c6a1a08f3adc8866efd33bee6aa52
   dependencies: []
 ---
 schema: armada/Chart/v1