Added OS APIs to associate/disassociate security groups to/from instances.

I will add views to return list of security groups associated with the servers later after this branch is merged into trunk. The reason I will do this later is because my previous merge proposal (https://code.launchpad.net/~tpatil/nova/add-options-network-create-os-apis/+merge/68292) is dependent on this work. In this merge proposal I have added a new extension which still uses default OS v1.1 controllers and views, but I am going to override views in this extension to send extra information like security groups.

2 files changed, 126 insertions, 18 deletions

diff --git a/nova/api/openstack/contrib/security_groups.py b/nova/api/openstack/contrib/security_groups.py
index 6c57fbb51..1fd64f3b8 100644
--- a/nova/api/openstack/contrib/security_groups.py
+++ b/nova/api/openstack/contrib/security_groups.py
@@ -25,10 +25,11 @@ from nova import db
 from nova import exception
 from nova import flags
 from nova import log as logging
+from nova import rpc
 from nova.api.openstack import common
 from nova.api.openstack import extensions
 from nova.api.openstack import wsgi
-
+from nova.compute import power_state
 
 from xml.dom import minidom
 
@@ -73,33 +74,28 @@ class SecurityGroupController(object):
                     context, rule)]
         return security_group
 
-    def show(self, req, id):
-        """Return data about the given security group."""
-        context = req.environ['nova.context']
+    def _get_security_group(self, context, id):
         try:
             id = int(id)
             security_group = db.security_group_get(context, id)
         except ValueError:
-            msg = _("Security group id is not integer")
-            return exc.HTTPBadRequest(explanation=msg)
+            msg = _("Security group id should be integer")
+            raise exc.HTTPBadRequest(explanation=msg)
         except exception.NotFound as exp:
-            return exc.HTTPNotFound(explanation=unicode(exp))
+            raise exc.HTTPNotFound(explanation=unicode(exp))
+        return security_group
 
+    def show(self, req, id):
+        """Return data about the given security group."""
+        context = req.environ['nova.context']
+        security_group = self._get_security_group(context, id)
         return {'security_group': self._format_security_group(context,
                                                               security_group)}
 
     def delete(self, req, id):
         """Delete a security group."""
         context = req.environ['nova.context']
-        try:
-            id = int(id)
-            security_group = db.security_group_get(context, id)
-        except ValueError:
-            msg = _("Security group id is not integer")
-            return exc.HTTPBadRequest(explanation=msg)
-        except exception.SecurityGroupNotFound as exp:
-            return exc.HTTPNotFound(explanation=unicode(exp))
-
+        security_group = self._get_security_group(context, id)
         LOG.audit(_("Delete security group %s"), id, context=context)
         db.security_group_destroy(context, security_group.id)
 
@@ -226,9 +222,9 @@ class SecurityGroupRulesController(SecurityGroupController):
         security_group_rule = db.security_group_rule_create(context, values)
 
         self.compute_api.trigger_security_group_rules_refresh(context,
-                                      security_group_id=security_group['id'])
+                                    security_group_id=security_group['id'])
 
-        return {'security_group_rule': self._format_security_group_rule(
+        return {"security_group_rule": self._format_security_group_rule(
                                                         context,
                                                         security_group_rule)}
 
@@ -336,6 +332,11 @@ class SecurityGroupRulesController(SecurityGroupController):
 
 
 class Security_groups(extensions.ExtensionDescriptor):
+
+    def __init__(self):
+        self.compute_api = compute.API()
+        super(Security_groups, self).__init__()
+
     def get_name(self):
         return "SecurityGroups"
 
@@ -351,6 +352,82 @@ class Security_groups(extensions.ExtensionDescriptor):
     def get_updated(self):
         return "2011-07-21T00:00:00+00:00"
 
+    def _addSecurityGroup(self, input_dict, req, instance_id):
+        context = req.environ['nova.context']
+
+        try:
+            body = input_dict['addSecurityGroup']
+            group_name = body['name']
+            instance_id = int(instance_id)
+        except ValueError:
+            msg = _("Server id should be integer")
+            raise exc.HTTPBadRequest(explanation=msg)
+        except TypeError:
+            msg = _("Missing parameter dict")
+            raise webob.exc.HTTPBadRequest(explanation=msg)
+        except KeyError:
+            msg = _("Security group not specified")
+            raise webob.exc.HTTPBadRequest(explanation=msg)
+
+        if not group_name or group_name.strip() == '':
+            msg = _("Security group name cannot be empty")
+            raise webob.exc.HTTPBadRequest(explanation=msg)
+
+        try:
+            self.compute_api.add_security_group(context, instance_id,
+                                                group_name)
+        except exception.SecurityGroupNotFound as exp:
+            return exc.HTTPNotFound(explanation=unicode(exp))
+        except exception.InstanceNotFound as exp:
+            return exc.HTTPNotFound(explanation=unicode(exp))
+        except exception.Invalid as exp:
+            return exc.HTTPBadRequest(explanation=unicode(exp))
+
+        return exc.HTTPAccepted()
+
+    def _removeSecurityGroup(self, input_dict, req, instance_id):
+        context = req.environ['nova.context']
+
+        try:
+            body = input_dict['removeSecurityGroup']
+            group_name = body['name']
+            instance_id = int(instance_id)
+        except ValueError:
+            msg = _("Server id should be integer")
+            raise exc.HTTPBadRequest(explanation=msg)
+        except TypeError:
+            msg = _("Missing parameter dict")
+            raise webob.exc.HTTPBadRequest(explanation=msg)
+        except KeyError:
+            msg = _("Security group not specified")
+            raise webob.exc.HTTPBadRequest(explanation=msg)
+
+        if not group_name or group_name.strip() == '':
+            msg = _("Security group name cannot be empty")
+            raise webob.exc.HTTPBadRequest(explanation=msg)
+
+        try:
+            self.compute_api.remove_security_group(context, instance_id,
+                                                   group_name)
+        except exception.SecurityGroupNotFound as exp:
+            return exc.HTTPNotFound(explanation=unicode(exp))
+        except exception.InstanceNotFound as exp:
+            return exc.HTTPNotFound(explanation=unicode(exp))
+        except exception.Invalid as exp:
+            return exc.HTTPBadRequest(explanation=unicode(exp))
+
+        return exc.HTTPAccepted()
+
+    def get_actions(self):
+        """Return the actions the extensions adds"""
+        actions = [
+                extensions.ActionExtension("servers", "addSecurityGroup",
+                                           self._addSecurityGroup),
+                extensions.ActionExtension("servers", "removeSecurityGroup",
+                                           self._removeSecurityGroup)
+                   ]
+        return actions
+
     def get_resources(self):
         resources = []
 
diff --git a/nova/api/openstack/create_instance_helper.py b/nova/api/openstack/create_instance_helper.py
index 978741682..73e48dca5 100644
--- a/nova/api/openstack/create_instance_helper.py
+++ b/nova/api/openstack/create_instance_helper.py
@@ -111,6 +111,15 @@ class CreateInstanceHelper(object):
         if personality:
             injected_files = self._get_injected_files(personality)
 
+        sg_names = []
+        security_groups = server_dict.get('security_groups')
+        if security_groups is not None:
+            sg_names = [sg['name'] for sg in security_groups if sg.get('name')]
+        if not sg_names:
+            sg_names.append('default')
+
+        sg_names = list(set(sg_names))
+
         try:
             flavor_id = self.controller._flavor_id_from_req_data(body)
         except ValueError as error:
@@ -164,6 +173,7 @@ class CreateInstanceHelper(object):
                                   reservation_id=reservation_id,
                                   min_count=min_count,
                                   max_count=max_count,
+                                  security_group=sg_names,
                                   user_data=user_data,
                                   availability_zone=availability_zone))
         except quota.QuotaError as error:
@@ -174,6 +184,8 @@ class CreateInstanceHelper(object):
         except exception.FlavorNotFound as error:
             msg = _("Invalid flavorRef provided.")
             raise exc.HTTPBadRequest(explanation=msg)
+        except exception.SecurityGroupNotFound as error:
+            raise exc.HTTPBadRequest(explanation=unicode(error))
         # Let the caller deal with unhandled exceptions.
 
     def _handle_quota_error(self, error):
@@ -465,6 +477,10 @@ class ServerXMLDeserializerV11(wsgi.MetadataXMLDeserializer):
         if personality is not None:
             server["personality"] = personality
 
+        security_groups = self._extract_security_groups(server_node)
+        if security_groups is not None:
+            server["security_groups"] = security_groups
+
         return server
 
     def _extract_personality(self, server_node):
@@ -481,3 +497,18 @@ class ServerXMLDeserializerV11(wsgi.MetadataXMLDeserializer):
             return personality
         else:
             return None
+
+    def _extract_security_groups(self, server_node):
+        """Marshal the security_groups attribute of a parsed request"""
+        node = self.find_first_child_named(server_node, "security_groups")
+        if node is not None:
+            security_groups = []
+            for sg_node in self.find_children_named(node, "security_group"):
+                item = {}
+                name_node = self.find_first_child_named(sg_node, "name")
+                if name_node:
+                    item["name"] = self.extract_text(name_node)
+                    security_groups.append(item)
+            return security_groups
+        else:
+            return None