Cells: Add cells API extension

Enables cells-related functionality such as adding neighbor cells,
listing neighbor cells, and showing the capabilities of the local cell.

Implements blueprint nova-compute-cells

DocImpact

Change-Id: Iacc1e68721a7867aeaf233903cbe6d18f09ad96e

bin/nova-manage

@@ -1056,11 +1056,11 @@ class CellCommands(object):
         ctxt = context.get_admin_context()
         db.cell_create(ctxt, values)
 
-    @args('--cell_id', dest='cell_id', metavar='<cell_id>',
-         help='ID of the cell to delete')
-    def delete(self, cell_id):
+    @args('--cell_name', dest='cell_name', metavar='<cell_name>',
+         help='Name of the cell to delete')
+    def delete(self, cell_name):
         ctxt = context.get_admin_context()
-        db.cell_delete(ctxt, cell_id)
+        db.cell_delete(ctxt, cell_name)
 
     def list(self):
         ctxt = context.get_admin_context()

doc/api_samples/all_extensions/extensions-get-resp.json

@@ -88,6 +88,14 @@
             "namespace": "http://docs.openstack.org/compute/ext/availabilityzone/api/v1.1",
             "updated": "2012-08-09T00:00:00+00:00"
         },
+        {
+            "alias": "os-cells",
+            "description": "Enables cells-related functionality such as adding neighbor cells,\n    listing neighbor cells, and getting the capabilities of the local cell.\n    ",
+            "links": [],
+            "name": "Cells",
+            "namespace": "http://docs.openstack.org/compute/ext/cells/api/v1.1",
+            "updated": "2011-09-21T00:00:00+00:00"
+        },
         {
             "alias": "os-certificates",
             "description": "Certificates support.",

doc/api_samples/all_extensions/extensions-get-resp.xml

@@ -37,6 +37,12 @@
   <extension alias="os-availability-zone" updated="2012-08-09T00:00:00+00:00" namespace="http://docs.openstack.org/compute/ext/availabilityzone/api/v1.1" name="AvailabilityZone">
     <description>Add availability_zone to the Create Server v1.1 API.</description>
   </extension>
+  <extension alias="os-cells" updated="2011-09-21T00:00:00+00:00" namespace="http://docs.openstack.org/compute/ext/cells/api/v1.1" name="Cells">
+    <description>Enables cells-related functionality such as adding child cells,
+    listing child cells, getting the capabilities of the local cell,
+    and returning build plans to parent cells' schedulers
+    </description>
+  </extension>
   <extension alias="os-certificates" updated="2012-01-19T00:00:00+00:00" namespace="http://docs.openstack.org/compute/ext/certificates/api/v1.1" name="Certificates">
     <description>Certificates support.</description>
   </extension>

doc/api_samples/os-cells/cells-get-resp.json

@@ -0,0 +1,9 @@
+{
+    "cell": {
+        "name": "cell3",
+        "rpc_host": null,
+        "rpc_port": null,
+        "type": "child",
+        "username": "username3"
+    }
+}

doc/api_samples/os-cells/cells-get-resp.xml

@@ -0,0 +1,2 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<cell xmlns="http://docs.rackspacecloud.com/servers/api/v1.0" username="username3" rpc_host="None" type="child" name="cell3" rpc_port="None"/>

doc/api_samples/os-cells/cells-list-empty-resp.json

@@ -0,0 +1,3 @@
+{
+    "cells": []
+}

doc/api_samples/os-cells/cells-list-empty-resp.xml

@@ -0,0 +1,2 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<cells xmlns="http://docs.rackspacecloud.com/servers/api/v1.0"/>

doc/api_samples/os-cells/cells-list-resp.json

@@ -0,0 +1,39 @@
+{
+    "cells": [
+        {
+            "name": "cell1",
+            "rpc_host": null,
+            "rpc_port": null,
+            "type": "child",
+            "username": "username1"
+        },
+        {
+            "name": "cell3",
+            "rpc_host": null,
+            "rpc_port": null,
+            "type": "child",
+            "username": "username3"
+        },
+        {
+            "name": "cell5",
+            "rpc_host": null,
+            "rpc_port": null,
+            "type": "child",
+            "username": "username5"
+        },
+        {
+            "name": "cell2",
+            "rpc_host": null,
+            "rpc_port": null,
+            "type": "parent",
+            "username": "username2"
+        },
+        {
+            "name": "cell4",
+            "rpc_host": null,
+            "rpc_port": null,
+            "type": "parent",
+            "username": "username4"
+        }
+    ]
+}

doc/api_samples/os-cells/cells-list-resp.xml

@@ -0,0 +1,8 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<cells xmlns="http://docs.rackspacecloud.com/servers/api/v1.0">
+  <cell username="username1" rpc_host="None" type="child" name="cell1" rpc_port="None"/>
+  <cell username="username3" rpc_host="None" type="child" name="cell3" rpc_port="None"/>
+  <cell username="username5" rpc_host="None" type="child" name="cell5" rpc_port="None"/>
+  <cell username="username2" rpc_host="None" type="parent" name="cell2" rpc_port="None"/>
+  <cell username="username4" rpc_host="None" type="parent" name="cell4" rpc_port="None"/>
+</cells>

doc/api_samples/os-hosts/hosts-list-resp.json

@@ -24,6 +24,11 @@
             "host_name": "6e48bfe1a3304b7b86154326328750ae",
             "service": "conductor",
             "zone": "internal"
+        },
+        {
+            "host_name": "39f55087a1024d1380755951c945ca69",
+            "service": "cells",
+            "zone": "internal"
         }
     ]
 }

doc/api_samples/os-hosts/hosts-list-resp.xml

@@ -5,4 +5,5 @@
   <host host_name="2d1bdd671b5d41fd89dec74be5770c63" service="network"/>
   <host host_name="7c2dd5ecb7494dd1bf4240b7f7f9bf3a" service="scheduler"/>
   <host host_name="f9c273d8e03141a2a01def0ad18e5be4" service="conductor"/>
-</hosts>
+  <host host_name="2b893569cd824b979bd80a2c94570a1f" service="cells"/>
+</hosts>

nova/exception.py

@@ -768,7 +768,7 @@ class FlavorAccessNotFound(NotFound):
 
 
 class CellNotFound(NotFound):
-    message = _("Cell %(cell_id)s could not be found.")
+    message = _("Cell %(cell_name)s doesn't exist.")
 
 
 class CellRoutingInconsistency(NovaException):