Add neutron-api relation contexts

hooks/nova_cc_context.py

@@ -31,7 +31,7 @@ class NovaCellContext(context.OSContextGenerator):
     interfaces = ['nova-cell']
 
     def __call__(self):
-        log('Generating template context for identity-service')
+        log('Generating template context for cell')
         ctxt = {}
         for rid in relation_ids('nova-cell'):
             for unit in related_units(rid):
@@ -44,6 +44,14 @@ class NovaCellContext(context.OSContextGenerator):
                     return ctxt
         return {}
 
+class NeutronAPIContext(context.OSContextGenerator):
+    def __call__(self):
+        log('Generating template context for neutron plugin')
+        ctxt = {}
+        for rid in relation_ids('neutron-api'):
+            for unit in related_units(rid):
+                ctxt = relation_get(rid=rid, unit=unit)
+        return ctxt
 
 class VolumeServiceContext(context.OSContextGenerator):
     interfaces = []
@@ -222,3 +230,4 @@ class NeutronPostgresqlDBContext(context.PostgresqlDBContext):
     def __init__(self):
         super(NeutronPostgresqlDBContext,
               self).__init__(config('neutron-database'))
+

hooks/nova_cc_hooks.py

@@ -536,6 +536,11 @@ def nova_cell_relation_changed():
         relation_set(dbready=False)
     CONFIGS.write(NOVA_CONF)
 
+@hooks.hook('neutron-api-relation-changed')
+def neutron_api_relation_changed():
+    print "In neutron-api-relation-changed"
+    CONFIGS.write(NOVA_CONF)
+
 
 def main():
     try:

hooks/nova_cc_utils.py

@@ -33,6 +33,7 @@ from charmhelpers.core.hookenv import (
     relation_get,
     relation_ids,
     remote_unit,
+    is_relation_made,
     INFO,
     ERROR,
 )
@@ -96,7 +97,6 @@ BASE_RESOURCE_MAP = OrderedDict([
         'contexts': [context.AMQPContext(ssl_dir=NOVA_CONF_DIR),
                      context.SharedDBContext(
                          relation_prefix='nova', ssl_dir=NOVA_CONF_DIR),
-                     nova_cc_context.NovaPostgresqlDBContext(),
                      context.ImageServiceContext(),
                      context.OSConfigFlagContext(),
                      context.SubordinateConfigContext(
@@ -113,7 +113,6 @@ BASE_RESOURCE_MAP = OrderedDict([
                      nova_cc_context.HAProxyContext(),
                      nova_cc_context.IdentityServiceContext(),
                      nova_cc_context.VolumeServiceContext(),
-                     nova_cc_context.NeutronCCContext(),
                      nova_cc_context.NovaCellContext()],
     }),
     (NOVA_API_PASTE, {
@@ -195,40 +194,53 @@ def resource_map():
 
     net_manager = network_manager()
 
-    # pop out irrelevant resources from the OrderedDict (easier than adding
-    # them late)
-    if net_manager != 'quantum':
-        [resource_map.pop(k) for k in list(resource_map.iterkeys())
-         if 'quantum' in k]
-    if net_manager != 'neutron':
-        [resource_map.pop(k) for k in list(resource_map.iterkeys())
-         if 'neutron' in k]
-
     if os.path.exists('/etc/apache2/conf-available'):
         resource_map.pop(APACHE_CONF)
     else:
         resource_map.pop(APACHE_24_CONF)
 
-    # add neutron plugin requirements. nova-c-c only needs the neutron-server
-    # associated with configs, not the plugin agent.
-    if net_manager in ['quantum', 'neutron']:
-        plugin = neutron_plugin()
-        if plugin:
-            conf = neutron_plugin_attribute(plugin, 'config', net_manager)
-            ctxts = (neutron_plugin_attribute(plugin, 'contexts', net_manager)
-                     or [])
-            services = neutron_plugin_attribute(plugin, 'server_services',
-                                                net_manager)
-            resource_map[conf] = {}
-            resource_map[conf]['services'] = services
-            resource_map[conf]['contexts'] = ctxts
-            resource_map[conf]['contexts'].append(
-                nova_cc_context.NeutronCCContext())
-
-            # update for postgres
-            resource_map[conf]['contexts'].append(
-                nova_cc_context.NeutronPostgresqlDBContext())
-
+    if is_relation_made('neutron-api'):
+        resource_map.pop(QUANTUM_CONF)
+        resource_map.pop(QUANTUM_DEFAULT)
+        resource_map.pop(NEUTRON_CONF)
+        resource_map.pop(NEUTRON_DEFAULT)
+        resource_map[NOVA_CONF]['contexts'].append(
+            nova_cc_context.NeutronAPIContext())
+    else:
+        resource_map[NOVA_CONF]['contexts'].append(
+            nova_cc_context.NeutronCCContext())
+        resource_map[NOVA_CONF]['contexts'].append(
+            nova_cc_context.NeutronPostgresqlDBContext())
+        # pop out irrelevant resources from the OrderedDict (easier than adding
+        # them late)
+        if net_manager != 'quantum':
+            [resource_map.pop(k) for k in list(resource_map.iterkeys())
+             if 'quantum' in k]
+        if net_manager != 'neutron':
+            [resource_map.pop(k) for k in list(resource_map.iterkeys())
+             if 'neutron' in k]
+    
+    
+        # add neutron plugin requirements. nova-c-c only needs the neutron-server
+        # associated with configs, not the plugin agent.
+        if net_manager in ['quantum', 'neutron']:
+            plugin = neutron_plugin()
+            if plugin:
+                conf = neutron_plugin_attribute(plugin, 'config', net_manager)
+                ctxts = (neutron_plugin_attribute(plugin, 'contexts', net_manager)
+                         or [])
+                services = neutron_plugin_attribute(plugin, 'server_services',
+                                                    net_manager)
+                resource_map[conf] = {}
+                resource_map[conf]['services'] = services
+                resource_map[conf]['contexts'] = ctxts
+                resource_map[conf]['contexts'].append(
+                    nova_cc_context.NeutronCCContext())
+    
+                # update for postgres
+                resource_map[conf]['contexts'].append(
+                    nova_cc_context.NeutronPostgresqlDBContext())
+       
     # nova-conductor for releases >= G.
     if os_release('nova-common') not in ['essex', 'folsom']:
         resource_map['/etc/nova/nova.conf']['services'] += ['nova-conductor']

metadata.yaml

@@ -32,6 +32,8 @@ requires:
     interface: quantum
   nova-cell:
     interface: nova-cell
+  neutron-api:
+    interface: neutron-api
   ha:
     interface: hacluster
     scope: container