Implement pod creation

Pod creation is working from magnum api now.

Change-Id: I4d8359302306d3bfafaf2c57ba9706d8a3f21629

magnum/api/controllers/v1/pod.py

@@ -91,6 +91,9 @@ class Pod(base.APIBase):
     pod_definition_url = wtypes.text
     """URL for pod file to create the pod"""
 
+    pod_data = wtypes.text
+    """Data for pod to create the pod"""
+
     links = wsme.wsattr([link.Link], readonly=True)
     """A list containing a self link and associated pod links"""
 
@@ -308,6 +311,8 @@ class PodsController(rest.RestController):
             # ignore pod_definition_url as it was used for create pod
             if field == 'pod_definition_url':
                 continue
+            if field == 'pod_data':
+                continue
             try:
                 patch_val = getattr(pod, field)
             except AttributeError:

magnum/conductor/handlers/kube.py

@@ -12,12 +12,47 @@
 
 """Magnum Kubernetes RPC handler."""
 
+from oslo.config import cfg
+
 from magnum.conductor.handlers.common import kube_utils
+from magnum import objects
+from magnum.openstack.common._i18n import _
 from magnum.openstack.common import log as logging
 
+
 LOG = logging.getLogger(__name__)
 
 
+kubernetes_opts = [
+    cfg.StrOpt('k8s_protocol',
+               default='http',
+               help=_('Default protocol of k8s master endpoint'
+               ' (http or https).')),
+    cfg.IntOpt('k8s_port',
+               default=8080,
+               help=_('Default port of the k8s master endpoint.')),
+]
+
+cfg.CONF.register_opts(kubernetes_opts, group='kubernetes')
+
+
+def _retrive_bay(ctxt, obj):
+    bay_uuid = obj.bay_uuid
+    return objects.Bay.get_by_uuid(ctxt, bay_uuid)
+
+
+def _retrive_k8s_master_url(ctxt, obj):
+    if hasattr(obj, 'bay_uuid'):
+        obj = _retrive_bay(ctxt, obj)
+
+    params = {
+        'k8s_protocol': cfg.CONF.kubernetes.k8s_protocol,
+        'k8s_port': cfg.CONF.kubernetes.k8s_port,
+        'master_address': obj.master_address
+    }
+    return "%(k8s_protocol)s://%(master_address)s:%(k8s_port)s" % params
+
+
 class Handler(object):
     """These are the backend operations.  They are executed by the backend
          service.  API calls via AMQP (within the ReST API) trigger the
@@ -75,12 +110,21 @@ class Handler(object):
     # Pod Operations
     def pod_create(self, ctxt, pod):
         LOG.debug("pod_create")
+        k8s_master_url = _retrive_k8s_master_url(ctxt, pod)
         # trigger a kubectl command
-        status = self.kube_cli.pod_create(pod)
+        status = self.kube_cli.pod_create(k8s_master_url, pod)
+        # TODO(yuanying): Is this correct location of updating status?
         if not status:
-            return None
+            pod.status = 'failed'
+        else:
+            pod.status = 'pending'
         # call the pod object to persist in db
-        pod.create(ctxt)
+        # TODO(yuanying): parse pod file and,
+        # - extract pod name and set it
+        # - extract pod labels and set it
+        # TODO(yuanying): Should kube_utils support definition_url?
+        # When do we get pod labels and name?
+        pod.create()
         return pod
 
     def pod_update(self, ctxt, pod):

magnum/objects/pod.py

@@ -36,6 +36,7 @@ class Pod(base.MagnumObject):
         'labels': obj_utils.dict_or_none,
         'status': obj_utils.str_or_none,
         'pod_definition_url': obj_utils.str_or_none,
+        'pod_data': obj_utils.str_or_none,
     }
 
     @staticmethod
@@ -45,6 +46,8 @@ class Pod(base.MagnumObject):
             # ignore pod_definition_url as it was used for create pod
             if field == 'pod_definition_url':
                 continue
+            if field == 'pod_data':
+                continue
             pod[field] = db_pod[field]
 
         pod.obj_reset_changes()

magnum/tests/conductor/handlers/test_kube.py

@@ -0,0 +1,91 @@
+# Copyright 2014 NEC Corporation.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from magnum.conductor.handlers import kube
+from magnum import objects
+from magnum.tests import base
+
+import mock
+from mock import patch
+
+
+class TestKube(base.BaseTestCase):
+    def setUp(self):
+        super(TestKube, self).setUp()
+        self.kube_handler = kube.Handler()
+
+    def mock_pod(self):
+        return objects.Pod({})
+
+    def mock_bay(self):
+        return objects.Bay({})
+
+    @patch('magnum.objects.Bay.get_by_uuid')
+    def test_retrive_bay_from_pod(self,
+                                  mock_bay_get_by_uuid):
+        expected_context = 'context'
+        expected_bay_uuid = 'bay_uuid'
+
+        pod = self.mock_pod()
+        pod.bay_uuid = expected_bay_uuid
+
+        kube._retrive_bay(expected_context, pod)
+
+        mock_bay_get_by_uuid.assert_called_once_with(expected_context,
+                                                     expected_bay_uuid)
+
+    @patch('magnum.objects.Bay.get_by_uuid')
+    def test_retrive_k8s_master_url_from_pod(self,
+                                    mock_bay_get_by_uuid):
+        expected_context = 'context'
+        expected_master_address = 'master_address'
+
+        pod = self.mock_pod()
+        pod.bay_uuid = 'bay_uuid'
+        bay = self.mock_bay()
+        bay.master_address = expected_master_address
+        mock_bay_get_by_uuid.return_value = bay
+
+        actual_master_address = kube._retrive_k8s_master_url(expected_context,
+                                                             pod)
+        self.assertEqual("http://%s:8080" % expected_master_address,
+                         actual_master_address)
+
+    @patch('magnum.conductor.handlers.kube._retrive_k8s_master_url')
+    def test_pod_create_with_success(self,
+                                     mock_retrive_k8s_master_url):
+        expected_master_url = 'master_address'
+        expected_pod = self.mock_pod()
+        expected_pod.create = mock.MagicMock()
+
+        mock_retrive_k8s_master_url.return_value = expected_master_url
+        with patch.object(self.kube_handler, 'kube_cli') as mock_kube_cli:
+            mock_kube_cli.pod_create.return_value = True
+
+            self.kube_handler.pod_create({}, expected_pod)
+            self.assertEqual('pending', expected_pod.status)
+
+    @patch('magnum.conductor.handlers.kube._retrive_k8s_master_url')
+    def test_pod_create_with_fail(self,
+                                  mock_retrive_k8s_master_url):
+        expected_master_url = 'master_address'
+        expected_pod = self.mock_pod()
+        expected_pod.create = mock.MagicMock()
+
+        mock_retrive_k8s_master_url.return_value = expected_master_url
+        with patch.object(self.kube_handler, 'kube_cli') as mock_kube_cli:
+            mock_kube_cli.pod_create.return_value = False
+
+            self.kube_handler.pod_create({}, expected_pod)
+            self.assertEqual('failed', expected_pod.status)