CORD-2964 Implement new openstack models and steps

Change-Id: I32ac438e799f563b721e19ad7ebc8a033796c88e
diff --git a/xos/synchronizer/steps/sync_openstackserviceinstance.py b/xos/synchronizer/steps/sync_openstackserviceinstance.py
new file mode 100644
index 0000000..6ae91a1
--- /dev/null
+++ b/xos/synchronizer/steps/sync_openstackserviceinstance.py
@@ -0,0 +1,134 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# 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.
+
+import base64
+import random
+import string
+
+from synchronizers.new_base.modelaccessor import OpenStackServiceInstance, Node, NetworkSlice, Flavor
+from newopenstacksyncstep import NewOpenStackSyncStep
+
+from xosconfig import Config
+from multistructlog import create_logger
+
+log = create_logger(Config().get('logging'))
+
+class SyncOpenStackServiceInstance(NewOpenStackSyncStep):
+    provides=[OpenStackServiceInstance]
+    requested_interval=0
+    observes=OpenStackServiceInstance
+
+    def get_connected_networks(self, instance):
+        xos_networks = [ns.network for ns in NetworkSlice.objects.filter(slice_id=instance.slice.id)]
+        return xos_networks
+
+    def get_user_data(self, instance):
+        pubkeys=[]
+
+        if instance.slice.creator and instance.slice.creator.public_key:
+            pubkeys.add(instance.slice.creator.public_key)
+
+        if instance.slice.service and instance.slice.service.public_key:
+            pubkeys.add(instance.slice.service.public_key)
+
+        userdata = '#cloud-config\n\n'
+#        userdata += 'opencloud:\n   slicename: "%s"\n   hostname: "%s"\n   restapi_hostname: "%s"\n   restapi_port: "%s"\n' % (
+#        instance.slice.name, instance.node.name, RESTAPI_HOSTNAME, str(RESTAPI_PORT))
+        userdata += 'ssh_authorized_keys:\n'
+        for key in pubkeys:
+            userdata += '  - %s\n' % key
+
+        log.info("generated userdata", userdata=userdata)
+
+        return userdata
+
+    def sync_record(self, instance):
+        slice = instance.slice
+        if not slice.trust_domain:
+            raise Exception("Instance's slice has no trust domain")
+
+        service = instance.slice.trust_domain.owner.leaf_model
+        #conn = self.connect_openstack_slice(slice)
+        conn = self.connect_openstack_admin(service)
+
+        os_domain = conn.identity.find_domain(slice.trust_domain.name)
+        os_project = conn.identity.find_project(slice.name, domain_id=os_domain.id)
+
+        os_instances = list(conn.compute.servers(name=instance.name, project_id=os_project.id))
+        if os_instances:
+            os_instance=os_instances[0]
+            log.info("Instance already exists in openstack", instance=instance)
+        else:
+            image_name = instance.image.name
+            image_id = conn.compute.find_image(image_name).id
+
+            if instance.flavor:
+                flavor_name = instance.flavor.name
+            else:
+                # pick a sensible default
+                flavor_name = "m1.small"
+            flavor_id = conn.compute.find_flavor(flavor_name).id
+
+            xos_networks = self.get_connected_networks(instance)
+            networks = []
+            for xos_network in xos_networks:
+                networks.append({"uuid": conn.network.find_network(xos_network.name).id})
+
+            # TODO(smbaker): No ssh keys specified
+
+            availability_zone="nova:%s" % instance.node.name
+
+            log.info("Creating Instance", instance=instance, image_id=image_id, flavor_id=flavor_id,
+                     availability_zone=availability_zone,
+                     networks=networks)
+
+            if not instance.admin_password:
+                instance.admin_password = ''.join(random.choice(string.ascii_lowercase + string.digits) for _ in range(8))
+                instance.save(update_fields=["admin_password"])
+
+            user_data = self.get_user_data(instance)
+
+            os_instance = conn.compute.create_server(name=instance.name,
+                                                     image_id=image_id,
+                                                     flavor_id=flavor_id,
+                                                     project_domain_id=os_project.id,
+                                                     availability_zone=availability_zone,
+                                                     networks=networks,
+                                                     config_drive=True,
+                                                     user_data=base64.b64encode(user_data),
+                                                     admin_password=instance.admin_password)
+
+        if os_instance.id != instance.backend_handle:
+            instance.backend_handle = os_instance.id
+            instance.save(update_fields=["backend_handle"])
+
+    def delete_record(self, instance):
+        slice = instance.slice
+        if not slice.trust_domain:
+            raise Exception("Instance's slice has no trust domain")
+
+        service = slice.trust_domain.owner.leaf_model
+        conn = self.connect_openstack_admin(service)
+
+        os_domain = conn.identity.find_domain(slice.trust_domain.name)
+        os_project = conn.identity.find_project(slice.name, domain_id=os_domain.id)
+
+        os_instances = list(conn.compute.servers(name=instance.name, project_id=os_project.id))
+        if (not os_instances):
+            log.info("Instance already does not exist in openstack", instance=instance)
+        else:
+            os_instance=os_instances[0]
+            log.info("Deleting Instance", instance=instance, os_id=os_instance.id)
+            conn.compute.delete_server(os_instance.id)