[image-build] Allow running image build scratch tasks

Issue #130

Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>

doc/configuration.rst

@@ -680,6 +680,8 @@ Image Build Settings
     If ``ksurl`` ends with ``#HEAD``, Pungi will figure out the SHA1 hash of
     current HEAD and use that instead.
 
+    Setting ``scratch`` to ``True`` will run the koji tasks as scratch builds.
+
 
 Example
 -------

pungi/phases/image_build.py

@@ -127,7 +127,8 @@ class ImageBuildPhase(PhaseBase):
                     "relative_image_dir": self.compose.paths.compose.image_dir(
                         variant, relative=True
                     ),
-                    "link_type": self.compose.conf.get("link_type", "hardlink-or-copy")
+                    "link_type": self.compose.conf.get("link_type", "hardlink-or-copy"),
+                    "scratch": image_conf.pop('scratch', False),
                 }
                 self.pool.add(CreateImageBuildThread(self.pool))
                 self.pool.queue_put((self.compose, cmd))
@@ -174,7 +175,8 @@ class CreateImageBuildThread(WorkerThread):
         self.pool.log_info("Writing image-build config for %s.%s into %s" % (
             cmd["image_conf"]["variant"], '-'.join(arches), cmd["conf_file"]))
         koji_cmd = koji_wrapper.get_image_build_cmd(cmd['image_conf'],
-                                                    conf_file_dest=cmd["conf_file"])
+                                                    conf_file_dest=cmd["conf_file"],
+                                                    scratch=cmd['scratch'])
 
         # avoid race conditions?
         # Kerberos authentication failed: Permission denied in replay cache code (-1765328215)

tests/test_imagebuildphase.py

@@ -117,6 +117,7 @@ class TestImageBuildPhase(unittest.TestCase):
             "image_dir": '/image_dir/Client/%(arch)s',
             "relative_image_dir": 'image_dir/Client/%(arch)s',
             "link_type": 'hardlink-or-copy',
+            "scratch": False,
         }
         server_args = {
             "format": [('docker', 'tar.xz')],
@@ -138,6 +139,7 @@ class TestImageBuildPhase(unittest.TestCase):
             "image_dir": '/image_dir/Server/%(arch)s',
             "relative_image_dir": 'image_dir/Server/%(arch)s',
             "link_type": 'hardlink-or-copy',
+            "scratch": False,
         }
         self.assertItemsEqual(phase.pool.queue_put.mock_calls,
                               [mock.call((compose, client_args)),
@@ -225,6 +227,7 @@ class TestImageBuildPhase(unittest.TestCase):
             "image_dir": '/image_dir/Server/%(arch)s',
             "relative_image_dir": 'image_dir/Server/%(arch)s',
             "link_type": 'hardlink-or-copy',
+            "scratch": False,
         })
 
     @mock.patch('pungi.phases.image_build.ThreadPool')
@@ -280,6 +283,7 @@ class TestImageBuildPhase(unittest.TestCase):
             "image_dir": '/image_dir/Server/%(arch)s',
             "relative_image_dir": 'image_dir/Server/%(arch)s',
             "link_type": 'hardlink-or-copy',
+            "scratch": False,
         })
 
     @mock.patch('pungi.phases.image_build.ThreadPool')
@@ -316,6 +320,39 @@ class TestImageBuildPhase(unittest.TestCase):
         self.assertEqual(args[0][1].get('image_conf', {}).get('release'),
                          '20151203.0')
 
+    @mock.patch('pungi.phases.image_build.ThreadPool')
+    def test_image_build_scratch_build(self, ThreadPool):
+        compose = _DummyCompose({
+            'image_build': {
+                '^Server$': [
+                    {
+                        'format': [('docker', 'tar.xz')],
+                        'name': 'Fedora-Docker-Base',
+                        'target': 'f24',
+                        'version': 'Rawhide',
+                        'ksurl': 'git://git.fedorahosted.org/git/spin-kickstarts.git',
+                        'kickstart': "fedora-docker-base.ks",
+                        'distro': 'Fedora-20',
+                        'disk_size': 3,
+                        'arches': ['x86_64'],
+                        'scratch': True,
+                    }
+                ]
+            },
+            'koji_profile': 'koji',
+        })
+
+        phase = ImageBuildPhase(compose)
+
+        phase.run()
+
+        # assert at least one thread was started
+        self.assertTrue(phase.pool.add.called)
+
+        self.assertTrue(phase.pool.queue_put.called_once)
+        args, kwargs = phase.pool.queue_put.call_args
+        self.assertTrue(args[0][1].get('scratch'))
+
 
 class TestCreateImageBuildThread(unittest.TestCase):
 
@@ -347,6 +384,7 @@ class TestCreateImageBuildThread(unittest.TestCase):
             "image_dir": '/image_dir/Client/%(arch)s',
             "relative_image_dir": 'image_dir/Client/%(arch)s',
             "link_type": 'hardlink-or-copy',
+            "scratch": False,
         }
         koji_wrapper = KojiWrapper.return_value
         koji_wrapper.run_create_image_cmd.return_value = {