[gnuoy, r=jamespage] Add support for neutron-plugin-api-subordinate relation

config.yaml

@@ -368,3 +368,9 @@ options:
     description: |
       A comma-separated list of nagios servicegroups.
       If left empty, the nagios_context will be used as the servicegroup
+  manage-neutron-plugin-legacy-mode:
+    type: boolean
+    default: True
+    description: |
+      If True neutron-server will install neutron packages for the plugin
+      configured.

hooks/neutron-plugin-api-subordinate-relation-changed

@@ -0,0 +1 @@
+neutron_api_hooks.py

hooks/neutron-plugin-api-subordinate-relation-departed

@@ -0,0 +1 @@
+neutron_api_hooks.py

hooks/neutron-plugin-api-subordinate-relation-joined

@@ -0,0 +1 @@
+neutron_api_hooks.py

hooks/neutron_api_context.py

@@ -234,3 +234,63 @@ class HAProxyContext(context.HAProxyContext):
         # for haproxy.conf
         ctxt['service_ports'] = port_mapping
         return ctxt
+
+
+class NeutronApiSDNContext(context.SubordinateConfigContext):
+    interfaces = 'neutron-plugin-api-subordinate'
+
+    def __init__(self):
+        super(NeutronApiSDNContext, self).__init__(
+            interface='neutron-plugin-api-subordinate',
+            service='neutron-api',
+            config_file='/etc/neutron/neutron.conf')
+
+    def __call__(self):
+        ctxt = super(NeutronApiSDNContext, self).__call__()
+        defaults = {
+            'core-plugin': {
+                'templ_key': 'core_plugin',
+                'value': 'neutron.plugins.ml2.plugin.Ml2Plugin',
+            },
+            'neutron-plugin-config': {
+                'templ_key': 'neutron_plugin_config',
+                'value': '/etc/neutron/plugins/ml2/ml2_conf.ini',
+            },
+            'service-plugins': {
+                'templ_key': 'service_plugins',
+                'value': 'router,firewall,lbaas,vpnaas,metering',
+            },
+            'restart-trigger': {
+                'templ_key': 'restart_trigger',
+                'value': '',
+            },
+        }
+        for rid in relation_ids('neutron-plugin-api-subordinate'):
+            for unit in related_units(rid):
+                rdata = relation_get(rid=rid, unit=unit)
+                plugin = rdata.get('neutron-plugin')
+                if not plugin:
+                    continue
+                ctxt['neutron_plugin'] = plugin
+                for key in defaults.keys():
+                    remote_value = rdata.get(key)
+                    ctxt_key = defaults[key]['templ_key']
+                    if remote_value:
+                        ctxt[ctxt_key] = remote_value
+                    else:
+                        ctxt[ctxt_key] = defaults[key]['value']
+                return ctxt
+        return ctxt
+
+
+class NeutronApiSDNConfigFileContext(context.OSContextGenerator):
+    interfaces = ['neutron-plugin-api-subordinate']
+
+    def __call__(self):
+        for rid in relation_ids('neutron-plugin-api-subordinate'):
+            for unit in related_units(rid):
+                rdata = relation_get(rid=rid, unit=unit)
+                neutron_server_plugin_conf = rdata.get('neutron-plugin-config')
+                if neutron_server_plugin_conf:
+                    return {'config': neutron_server_plugin_conf}
+        return {'config': '/etc/neutron/plugins/ml2/ml2_conf.ini'}

hooks/neutron_api_hooks.py

@@ -479,7 +479,8 @@ def zeromq_configuration_relation_joined(relid=None):
                  users="neutron")
 
 
-@hooks.hook('zeromq-configuration-relation-changed')
+@hooks.hook('zeromq-configuration-relation-changed',
+            'neutron-plugin-api-subordinate-relation-changed')
 @restart_on_change(restart_map(), stopstart=True)
 def zeromq_configuration_relation_changed():
     CONFIGS.write_all()

hooks/neutron_api_utils.py

@@ -160,12 +160,17 @@ def api_port(service):
     return API_PORTS[service]
 
 
+def manage_plugin():
+    return config('manage-neutron-plugin-legacy-mode')
+
+
 def determine_packages(source=None):
     # currently all packages match service names
     packages = [] + BASE_PACKAGES
 
     for v in resource_map().values():
         packages.extend(v['services'])
+        if manage_plugin():
             pkgs = neutron_plugin_attribute(config('neutron-plugin'),
                                             'server_packages',
                                             'neutron')
@@ -211,8 +216,9 @@ def resource_map():
     else:
         resource_map.pop(APACHE_24_CONF)
 
-    # add neutron plugin requirements. nova-c-c only needs the neutron-server
+    if manage_plugin():
-    # associated with configs, not the plugin agent.
+        # add neutron plugin requirements. nova-c-c only needs the
+        # neutron-server associated with configs, not the plugin agent.
         plugin = config('neutron-plugin')
         conf = neutron_plugin_attribute(plugin, 'config', 'neutron')
         ctxts = (neutron_plugin_attribute(plugin, 'contexts', 'neutron')
@@ -229,6 +235,12 @@ def resource_map():
         resource_map[conf]['contexts'].append(
             context.PostgresqlDBContext(database=config('database')))
 
+    else:
+        resource_map[NEUTRON_CONF]['contexts'].append(
+            neutron_api_context.NeutronApiSDNContext()
+        )
+        resource_map[NEUTRON_DEFAULT]['contexts'] = \
+            [neutron_api_context.NeutronApiSDNConfigFileContext()]
     return resource_map
 
 

metadata.yaml

@@ -37,6 +37,9 @@ requires:
   zeromq-configuration:
     interface: zeromq-configuration
     scope: container
+  neutron-plugin-api-subordinate:
+    interface: neutron-plugin-api-subordinate
+    scope: container
 peers:
   cluster:
     interface: neutron-api-ha

templates/icehouse/neutron.conf

@@ -27,10 +27,14 @@ bind_port = 9696
 
 {% if core_plugin -%}
 core_plugin = {{ core_plugin }}
+{% if service_plugins -%}
+service_plugins = {{ service_plugins }}
+{% else -%}
 {% if neutron_plugin in ['ovs', 'ml2'] -%}
 service_plugins = neutron.services.l3_router.l3_router_plugin.L3RouterPlugin,neutron.services.firewall.fwaas_plugin.FirewallPlugin,neutron.services.loadbalancer.plugin.LoadBalancerPlugin,neutron.services.vpn.plugin.VPNDriverPlugin,neutron.services.metering.metering_plugin.MeteringPlugin
 {% endif -%}
 {% endif -%}
+{% endif -%}
 
 {% if neutron_security_groups -%}
 allow_overlapping_ips = True
@@ -50,6 +54,12 @@ nova_admin_password = {{ admin_password }}
 nova_admin_auth_url = {{ auth_protocol }}://{{ auth_host }}:{{ auth_port }}/v2.0
 {% endif -%}
 
+{% if sections and 'DEFAULT' in sections -%}
+{% for key, value in sections['DEFAULT'] -%}
+{{ key }} = {{ value }}
+{% endfor -%}
+{% endif %}
+
 [quotas]
 quota_driver = neutron.db.quota_db.DbQuotaDriver
 {% if neutron_security_groups -%}

templates/juno/neutron.conf

@@ -54,6 +54,12 @@ nova_admin_password = {{ admin_password }}
 nova_admin_auth_url = {{ auth_protocol }}://{{ auth_host }}:{{ auth_port }}/v2.0
 {% endif -%}
 
+{% if sections and 'DEFAULT' in sections -%}
+{% for key, value in sections['DEFAULT'] -%}
+{{ key }} = {{ value }}
+{% endfor -%}
+{% endif %}
+
 [quotas]
 quota_driver = neutron.db.quota_db.DbQuotaDriver
 {% if neutron_security_groups -%}

templates/kilo/neutron.conf

@@ -31,10 +31,14 @@ bind_port = 9696
 
 {% if core_plugin -%}
 core_plugin = {{ core_plugin }}
+{% if service_plugins -%}
+service_plugins = {{ service_plugins }}
+{% else -%}
 {% if neutron_plugin in ['ovs', 'ml2'] -%}
 service_plugins = router,firewall,lbaas,vpnaas,metering
 {% endif -%}
 {% endif -%}
+{% endif -%}
 
 {% if neutron_security_groups -%}
 allow_overlapping_ips = True
@@ -52,6 +56,12 @@ nova_admin_password = {{ admin_password }}
 nova_admin_auth_url = {{ auth_protocol }}://{{ auth_host }}:{{ auth_port }}/v2.0
 {% endif -%}
 
+{% if sections and 'DEFAULT' in sections -%}
+{% for key, value in sections['DEFAULT'] -%}
+{{ key }} = {{ value }}
+{% endfor -%}
+{% endif %}
+
 {% include "section-zeromq" %}
 
 [quotas]

unit_tests/test_neutron_api_context.py

@@ -1,3 +1,4 @@
+import json
 from test_utils import CharmTestCase
 from mock import patch
 import neutron_api_context as context
@@ -432,3 +433,135 @@ class NeutronCCContextTest(CharmTestCase):
         }
         for key in expect.iterkeys():
             self.assertEquals(napi_ctxt[key], expect[key])
+
+
+class NeutronApiSDNContextTest(CharmTestCase):
+
+    def setUp(self):
+        super(NeutronApiSDNContextTest, self).setUp(context, TO_PATCH)
+        self.relation_get.side_effect = self.test_relation.get
+
+    def tearDown(self):
+        super(NeutronApiSDNContextTest, self).tearDown()
+
+    def test_init(self):
+        napisdn_ctxt = context.NeutronApiSDNContext()
+        self.assertEquals(
+            napisdn_ctxt.interfaces,
+            ['neutron-plugin-api-subordinate']
+        )
+        self.assertEquals(napisdn_ctxt.services, ['neutron-api'])
+        self.assertEquals(
+            napisdn_ctxt.config_file,
+            '/etc/neutron/neutron.conf'
+        )
+
+    @patch.object(charmhelpers.contrib.openstack.context, 'log')
+    @patch.object(charmhelpers.contrib.openstack.context, 'relation_get')
+    @patch.object(charmhelpers.contrib.openstack.context, 'related_units')
+    @patch.object(charmhelpers.contrib.openstack.context, 'relation_ids')
+    def ctxt_check(self, rel_settings, expect, _rids, _runits, _rget, _log):
+        self.test_relation.set(rel_settings)
+        _runits.return_value = ['unit1']
+        _rids.return_value = ['rid2']
+        _rget.side_effect = self.test_relation.get
+        self.relation_ids.return_value = ['rid2']
+        self.related_units.return_value = ['unit1']
+        napisdn_ctxt = context.NeutronApiSDNContext()()
+        self.assertEquals(napisdn_ctxt, expect)
+
+    def test_defaults(self):
+        self.ctxt_check(
+            {'neutron-plugin': 'ovs'},
+            {
+                'core_plugin': 'neutron.plugins.ml2.plugin.Ml2Plugin',
+                'neutron_plugin_config': ('/etc/neutron/plugins/ml2/'
+                                          'ml2_conf.ini'),
+                'service_plugins': 'router,firewall,lbaas,vpnaas,metering',
+                'restart_trigger': '',
+                'neutron_plugin': 'ovs',
+                'sections': {},
+            }
+        )
+
+    def test_overrides(self):
+        self.ctxt_check(
+            {
+                'neutron-plugin': 'ovs',
+                'core-plugin': 'neutron.plugins.ml2.plugin.MidoPlumODL',
+                'neutron-plugin-config': '/etc/neutron/plugins/fl/flump.ini',
+                'service-plugins': 'router,unicorn,rainbows',
+                'restart-trigger': 'restartnow',
+            },
+            {
+                'core_plugin': 'neutron.plugins.ml2.plugin.MidoPlumODL',
+                'neutron_plugin_config': '/etc/neutron/plugins/fl/flump.ini',
+                'service_plugins': 'router,unicorn,rainbows',
+                'restart_trigger': 'restartnow',
+                'neutron_plugin': 'ovs',
+                'sections': {},
+            }
+        )
+
+    def test_subordinateconfig(self):
+        principle_config = {
+            "neutron-api": {
+                "/etc/neutron/neutron.conf": {
+                    "sections": {
+                        'DEFAULT': [
+                            ('neutronboost', True)
+                        ],
+                    }
+                }
+            }
+        }
+        self.ctxt_check(
+            {
+                'neutron-plugin': 'ovs',
+                'subordinate_configuration': json.dumps(principle_config),
+            },
+            {
+                'core_plugin': 'neutron.plugins.ml2.plugin.Ml2Plugin',
+                'neutron_plugin_config': ('/etc/neutron/plugins/ml2/'
+                                          'ml2_conf.ini'),
+                'service_plugins': 'router,firewall,lbaas,vpnaas,metering',
+                'restart_trigger': '',
+                'neutron_plugin': 'ovs',
+                'sections': {u'DEFAULT': [[u'neutronboost', True]]},
+            }
+        )
+
+    def test_empty(self):
+        self.ctxt_check(
+            {},
+            {'sections': {}},
+        )
+
+
+class NeutronApiSDNConfigFileContextTest(CharmTestCase):
+
+    def setUp(self):
+        super(NeutronApiSDNConfigFileContextTest, self).setUp(
+            context, TO_PATCH)
+        self.relation_get.side_effect = self.test_relation.get
+
+    def tearDown(self):
+        super(NeutronApiSDNConfigFileContextTest, self).tearDown()
+
+    def test_configset(self):
+        self.test_relation.set({
+            'neutron-plugin-config': '/etc/neutron/superplugin.ini'
+        })
+        self.relation_ids.return_value = ['rid2']
+        self.related_units.return_value = ['unit1']
+        napisdn_ctxt = context.NeutronApiSDNConfigFileContext()()
+        self.assertEquals(napisdn_ctxt, {
+            'config': '/etc/neutron/superplugin.ini'
+        })
+
+    def test_default(self):
+        self.relation_ids.return_value = []
+        napisdn_ctxt = context.NeutronApiSDNConfigFileContext()()
+        self.assertEquals(napisdn_ctxt, {
+            'config': '/etc/neutron/plugins/ml2/ml2_conf.ini'
+        })

unit_tests/test_neutron_api_utils.py

@@ -104,28 +104,57 @@ class TestNeutronAPIUtils(CharmTestCase):
         expect.extend(nutils.KILO_PACKAGES)
         self.assertItemsEqual(pkg_list, expect)
 
+    @patch.object(nutils, 'git_install_requested')
+    def test_determine_packages_noplugin(self, git_requested):
+        git_requested.return_value = False
+        self.test_config.set('manage-neutron-plugin-legacy-mode', False)
+        pkg_list = nutils.determine_packages()
+        expect = deepcopy(nutils.BASE_PACKAGES)
+        expect.extend(['neutron-server'])
+        self.assertItemsEqual(pkg_list, expect)
+
     def test_determine_ports(self):
         port_list = nutils.determine_ports()
         self.assertItemsEqual(port_list, [9696])
 
+    @patch.object(nutils, 'manage_plugin')
     @patch('os.path.exists')
-    def test_resource_map(self, _path_exists):
+    def test_resource_map(self, _path_exists, _manage_plugin):
         _path_exists.return_value = False
+        _manage_plugin.return_value = True
         _map = nutils.resource_map()
         confs = [nutils.NEUTRON_CONF, nutils.NEUTRON_DEFAULT,
                  nutils.APACHE_CONF]
         [self.assertIn(q_conf, _map.keys()) for q_conf in confs]
         self.assertTrue(nutils.APACHE_24_CONF not in _map.keys())
 
+    @patch.object(nutils, 'manage_plugin')
     @patch('os.path.exists')
-    def test_resource_map_apache24(self, _path_exists):
+    def test_resource_map_apache24(self, _path_exists, _manage_plugin):
         _path_exists.return_value = True
+        _manage_plugin.return_value = True
         _map = nutils.resource_map()
         confs = [nutils.NEUTRON_CONF, nutils.NEUTRON_DEFAULT,
                  nutils.APACHE_24_CONF]
         [self.assertIn(q_conf, _map.keys()) for q_conf in confs]
         self.assertTrue(nutils.APACHE_CONF not in _map.keys())
 
+    @patch.object(nutils, 'manage_plugin')
+    @patch('os.path.exists')
+    def test_resource_map_noplugin(self, _path_exists, _manage_plugin):
+        _path_exists.return_value = True
+        _manage_plugin.return_value = False
+        _map = nutils.resource_map()
+        found_sdn_ctxt = False
+        found_sdnconfig_ctxt = False
+        for ctxt in _map[nutils.NEUTRON_CONF]['contexts']:
+            if isinstance(ctxt, ncontext.NeutronApiSDNContext):
+                found_sdn_ctxt = True
+        for ctxt in _map[nutils.NEUTRON_DEFAULT]['contexts']:
+            if isinstance(ctxt, ncontext.NeutronApiSDNConfigFileContext):
+                found_sdnconfig_ctxt = True
+        self.assertTrue(found_sdn_ctxt and found_sdnconfig_ctxt)
+
     @patch('os.path.exists')
     def test_restart_map(self, mock_path_exists):
         mock_path_exists.return_value = False
@@ -520,3 +549,13 @@ class TestNeutronAPIUtils(CharmTestCase):
                'upgrade',
                'head']
         self.subprocess.check_output.assert_called_with(cmd)
+
+    def test_manage_plugin_true(self):
+        self.test_config.set('manage-neutron-plugin-legacy-mode', True)
+        manage = nutils.manage_plugin()
+        self.assertTrue(manage)
+
+    def test_manage_plugin_false(self):
+        self.test_config.set('manage-neutron-plugin-legacy-mode', False)
+        manage = nutils.manage_plugin()
+        self.assertFalse(manage)