Added ContainerImage class

Factory plus implementation for docker

kiwi/container_image.py

@@ -0,0 +1,36 @@
+# Copyright (c) 2015 SUSE Linux GmbH.  All rights reserved.
+#
+# This file is part of kiwi.
+#
+# kiwi is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# kiwi is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kiwi.  If not, see <http://www.gnu.org/licenses/>
+#
+# project
+from container_image_docker import ContainerImageDocker
+
+from exceptions import (
+    KiwiContainerImageSetupError
+)
+
+
+class ContainerImage(object):
+    """
+        Container Image factory
+    """
+    def __new__(self, name, root_dir):
+        if name == 'docker':
+            return ContainerImageDocker(root_dir)
+        else:
+            raise KiwiContainerImageSetupError(
+                'Support for %s container not implemented' % name
+            )

kiwi/container_image_docker.py

@@ -0,0 +1,41 @@
+# Copyright (c) 2015 SUSE Linux GmbH.  All rights reserved.
+#
+# This file is part of kiwi.
+#
+# kiwi is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# kiwi is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with kiwi.  If not, see <http://www.gnu.org/licenses/>
+#
+# project
+from command import Command
+from archive_tar import ArchiveTar
+
+
+class ContainerImageDocker(object):
+    """
+        Create docker container from a root directory
+    """
+    def __init__(self, root_dir):
+        self.root_dir = root_dir
+
+    def create(self, filename):
+        exclude_list = [
+            'image', '.profile', '.kconfig', 'var/cache/kiwi', 'boot'
+        ]
+        # replace potential suffix from filename because
+        # it is added by the archive creation call
+        archive = ArchiveTar(
+            filename.replace('.xz', '')
+        )
+        archive.create_xz_compressed(
+            source_dir=self.root_dir, exclude=exclude_list
+        )

kiwi/exceptions.py

@@ -89,6 +89,10 @@ class KiwiContainerSetupError(KiwiError):
     pass
 
 
+class KiwiContainerImageSetupError(KiwiError):
+    pass
+
+
 class KiwiDataStructureError(KiwiError):
     pass
 

test/unit/container_image_docker_test.py

@@ -0,0 +1,26 @@
+from nose.tools import *
+from mock import patch
+
+import mock
+
+import nose_helper
+
+from kiwi.exceptions import *
+from kiwi.container_image_docker import ContainerImageDocker
+
+
+class TestContainerImageDocker(object):
+    def setup(self):
+        self.docker = ContainerImageDocker('root_dir')
+
+    @patch('kiwi.container_image_docker.ArchiveTar')
+    def test_create(self, mock_archive):
+        archive = mock.Mock()
+        mock_archive.return_value = archive
+        self.docker.create('result.tar.xz')
+        mock_archive.assert_called_once_with('result.tar')
+        archive.create_xz_compressed.assert_called_once_with(
+            exclude=[
+                'image', '.profile', '.kconfig', 'var/cache/kiwi', 'boot'
+            ], source_dir='root_dir'
+        )

test/unit/container_image_test.py

@@ -0,0 +1,20 @@
+from nose.tools import *
+from mock import patch
+
+import mock
+
+import nose_helper
+
+from kiwi.exceptions import *
+from kiwi.container_image import ContainerImage
+
+
+class TestContainerImage(object):
+    @raises(KiwiContainerImageSetupError)
+    def test_container_image_not_implemented(self):
+        ContainerImage('foo', 'root_dir')
+
+    @patch('kiwi.container_image.ContainerImageDocker')
+    def test_container_image_docker(self, mock_docker):
+        ContainerImage('docker', 'root_dir')
+        mock_docker.assert_called_once_with('root_dir')