Also update local package determination to include headers.

hooks/quantum_utils.py

@@ -15,8 +15,10 @@ from charmhelpers.contrib.openstack.utils import (
     get_os_codename_install_source,
     get_os_codename_package
 )
+
 import charmhelpers.contrib.openstack.context as context
 import charmhelpers.contrib.openstack.templating as templating
+from charmhelpers.contrib.openstack.neutron import headers_package
 from quantum_contexts import (
     CORE_PLUGIN, OVS, NVP,
     NEUTRON, QUANTUM,
@@ -97,10 +99,15 @@ EARLY_PACKAGES = {
 def get_early_packages():
     '''Return a list of package for pre-install based on configured plugin'''
     if config('plugin') in EARLY_PACKAGES:
-        return EARLY_PACKAGES[config('plugin')]
+        pkgs = EARLY_PACKAGES[config('plugin')]
     else:
         return []
 
+    # ensure headers are installed build any required dkms packages
+    if [p for p in pkgs if 'dkms' in p]:
+        return pkgs + [headers_package()]
+    return pkgs
+
 
 def get_packages():
     '''Return a list of packages for install based on the configured plugin'''

unit_tests/test_quantum_utils.py

@@ -1,6 +1,9 @@
 from mock import MagicMock, call
+
 import charmhelpers.contrib.openstack.templating as templating
+
 templating.OSConfigRenderer = MagicMock()
+
 import quantum_utils
 
 from test_utils import (
@@ -19,7 +22,8 @@ TO_PATCH = [
     'log',
     'add_bridge',
     'add_bridge_port',
-    'networking_name'
+    'networking_name',
+    'headers_package',
 ]
 
 
@@ -27,6 +31,7 @@ class TestQuantumUtils(CharmTestCase):
     def setUp(self):
         super(TestQuantumUtils, self).setUp(quantum_utils, TO_PATCH)
         self.networking_name.return_value = 'neutron'
+        self.headers_package.return_value = 'linux-headers-2.6.18'
 
     def tearDown(self):
         # Reset cached cache
@@ -44,8 +49,9 @@ class TestQuantumUtils(CharmTestCase):
 
     def test_get_early_packages_ovs(self):
         self.config.return_value = 'ovs'
-        self.assertEquals(quantum_utils.get_early_packages(),
-                          ['openvswitch-datapath-dkms'])
+        self.assertEquals(
+            quantum_utils.get_early_packages(),
+            ['openvswitch-datapath-dkms', 'linux-headers-2.6.18'])
 
     def test_get_early_packages_nvp(self):
         self.config.return_value = 'nvp'