def get_dockerfile_packages():
'''Given a Dockerfile return an approximate image object. This is mosty
guess work and shouldn't be relied on for accurate information. Add
Notice messages indicating as such:
1. Create an image with a placeholder repotag
2. For each RUN command, create a package list
3. Create layer objects with incremental integers and add the package
list to that layer with a Notice about parsing
4. Return stub image'''
stub_image = Image('easteregg:cookie')
layer_count = 0
for inst in docker.docker_commands:
if inst[0] == 'RUN':
layer_count = layer_count + 1
layer = ImageLayer(layer_count)
install_commands, msg = common.filter_install_commands(inst[1])
if msg:
layer.origins.add_notice_to_origins(
inst[1], Notice(msg, 'info'))
pkg_names = []
for command in install_commands:
pkg_names.append(common.get_installed_package_names(command))
for pkg_name in pkg_names:
pkg = Package(pkg_name)
# shell parser does not parse version pins yet
# when that is enabled, Notices for no versions need to be
# added here
layer.add_package(pkg)
return stub_image
def setUp(self):
self.layer = ImageLayer('123abc', 'path/to/tar')
class TestClassImageLayer(unittest.TestCase):
def setUp(self):
self.layer = ImageLayer('123abc', 'path/to/tar')
def tearDown(self):
del self.layer
def testInstance(self):
self.assertEqual(self.layer.diff_id, '123abc')
self.assertEqual(self.layer.tar_file, 'path/to/tar')
self.assertFalse(self.layer.packages)
self.assertFalse(self.layer.created_by)
self.assertRaises(AttributeError, setattr, self.layer, 'diff_id',
'456def')
self.assertRaises(AttributeError, setattr, self.layer, 'tar_file',
'some/other/path')
self.layer.created_by = 'some string'
self.assertEqual(self.layer.created_by, 'some string')
def testAddPackage(self):
err = "Object type String, should be Package"
p1 = Package('x')
self.layer.add_package(p1)
self.assertEqual(len(self.layer.packages), 1)
with self.assertRaises(TypeError, msg=err):
self.layer.add_package("not_a_package")
def testRemovePackage(self):
p1 = Package('x')
p2 = Package('y')
self.layer.add_package(p1)
self.layer.add_package(p2)
self.assertTrue(self.layer.remove_package('y'))
self.assertFalse(self.layer.remove_package('y'))
def testToDict(self):
p1 = Package('x')
self.layer.add_package(p1)
a_dict = self.layer.to_dict()
self.assertTrue(a_dict[''])
self.assertEqual(len(a_dict['']['packages']), 1)
self.assertEqual(a_dict['']['packages'][0]['name'], 'x')
self.assertEqual(a_dict['']['tar_file'], 'path/to/tar')
def testGetPackageNames(self):
p1 = Package('x')
self.layer.add_package(p1)
pkgs = self.layer.get_package_names()
self.assertEqual(pkgs[0], 'x')