Add change vnf flavour biz

Change-Id: If962e57f90e20d34ef5aacd9952bedec3c89de28
Issue-ID: VFC-1306
Signed-off-by: fujinhua <fu.jinhua@zte.com.cn>

3 files changed, 131 insertions, 7 deletions

diff --git a/lcm/lcm/nf/biz/change_vnf_flavour.py b/lcm/lcm/nf/biz/change_vnf_flavour.py
new file mode 100644
index 00000000..f4871688
--- /dev/null
+++ b/lcm/lcm/nf/biz/change_vnf_flavour.py
@@ -0,0 +1,94 @@
+# Copyright 2019 ZTE Corporation.
+#
+# 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 logging
+import traceback
+import json
+from threading import Thread
+
+from lcm.nf.biz.grant_vnf import grant_resource
+from lcm.nf.const import GRANT_TYPE, CHANGE_TYPE
+from lcm.nf.const import VNF_STATUS
+from lcm.pub.utils.notificationsutil import NotificationsUtil, prepare_notification_data
+from lcm.pub.utils.values import ignore_case_get
+from lcm.pub.utils.timeutil import now_time
+from lcm.pub.utils.jobutil import JobUtil
+from lcm.pub.exceptions import NFLCMException
+from lcm.pub.database.models import NfInstModel
+
+logger = logging.getLogger(__name__)
+
+
+class ChangeVnfFlavour(Thread):
+    def __init__(self, data, nf_inst_id, job_id):
+        super(ChangeVnfFlavour, self).__init__()
+        self.data = data
+        self.nf_inst_id = nf_inst_id
+        self.job_id = job_id
+        self.vnf_insts = NfInstModel.objects.filter(nfinstid=self.nf_inst_id)
+
+    def run(self):
+        try:
+            JobUtil.add_job_status(self.job_id,
+                                   10,
+                                   "Start to apply grant.")
+            self.apply_grant()
+            JobUtil.add_job_status(self.job_id,
+                                   50,
+                                   "Start to change vnf flavour.")
+            self.do_operation()
+            self.vnf_insts.update(
+                status='INSTANTIATED',
+                lastuptime=now_time()
+            )
+            self.send_notification()
+            JobUtil.add_job_status(self.job_id,
+                                   100,
+                                   "Change vnf flavour success.")
+        except NFLCMException as e:
+            logger.error(e.message)
+            self.change_vnf_flavour_failed_handle(e.message)
+        except Exception as e:
+            logger.error(e.message)
+            logger.error(traceback.format_exc())
+            self.change_vnf_flavour_failed_handle(e.message)
+
+    def apply_grant(self):
+        logger.debug("Start change flavour apply grant")
+        vdus = ignore_case_get(self.vnfd_info, "vdus")
+        grant_result = grant_resource(data=self.data,
+                                      nf_inst_id=self.nf_inst_id,
+                                      job_id=self.job_id,
+                                      grant_type=GRANT_TYPE.CHANGE_FLAVOUR,
+                                      vdus=vdus)
+        logger.debug("Change flavour Grant result: %s", grant_result)
+
+    def do_operation(self):
+        logger.info('Operation resource begin')
+        self.vnfd_info = json.loads(self.vnf_insts[0].vnfd_model)
+        # TODO: Add operation logic
+
+    def send_notification(self):
+        data = prepare_notification_data(nfinstid=self.nf_inst_id,
+                                         jobid=self.job_id,
+                                         changetype=CHANGE_TYPE.MODIFIED,
+                                         operation=self.op_type)
+        logger.debug('Notify request data = %s' % data)
+        NotificationsUtil().send_notification(data)
+
+    def change_vnf_flavour_failed_handle(self, error_msg):
+        logger.error('Chnage vnf flavour failed, detail message: %s', error_msg)
+        self.vnf_insts.update(status=VNF_STATUS.FAILED,
+                              lastuptime=now_time())
+        JobUtil.add_job_status(self.job_id, 255, error_msg)
diff --git a/lcm/lcm/nf/const.py b/lcm/lcm/nf/const.py
index f76a390f..e61c5a27 100644
--- a/lcm/lcm/nf/const.py
+++ b/lcm/lcm/nf/const.py
@@ -16,12 +16,41 @@ import json
 from lcm.pub.config import config
 from lcm.pub.utils.jobutil import enum
 
-HEAL_ACTION_TYPE = enum(START="vmCreate", RESTART="vmReset")
-ACTION_TYPE = enum(START=1, STOP=2, REBOOT=3)
-GRANT_TYPE = enum(INSTANTIATE="INSTANTIATE", TERMINATE="TERMINATE", HEAL_CREATE="Heal Create", HEAL_RESTART="Heal Restart", OPERATE="OPERATE")
-VNF_STATUS = enum(NULL='null', INSTANTIATING="instantiating", INACTIVE='inactive', ACTIVE="active",
-                  FAILED="failed", TERMINATING="terminating", SCALING="scaling", OPERATING="operating",
-                  UPDATING="updating", HEALING="healing")
+HEAL_ACTION_TYPE = enum(
+    START="vmCreate",
+    RESTART="vmReset"
+)
+
+ACTION_TYPE = enum(
+    START=1,
+    STOP=2,
+    REBOOT=3
+)
+
+GRANT_TYPE = enum(
+    INSTANTIATE="INSTANTIATE",
+    TERMINATE="TERMINATE",
+    HEAL_CREATE="Heal Create",
+    HEAL_RESTART="Heal Restart",
+    SCALE_IN="SCALE_IN",
+    SCALE_OUT="SCALE_OUT",
+    CHANGE_FLAVOUR="CHANGE_FLAVOUR",
+    OPERATE="OPERATE",
+    CHANGE_CONNECTIVITY="CHANGE_CONNECTIVITY",
+)
+
+VNF_STATUS = enum(
+    NULL='null',
+    INSTANTIATING="instantiating",
+    INACTIVE='inactive',
+    ACTIVE="active",
+    FAILED="failed",
+    TERMINATING="terminating",
+    SCALING="scaling",
+    OPERATING="operating",
+    UPDATING="updating",
+    HEALING="healing"
+)
 
 OPERATION_TYPE = enum(
     INSTANTIATE="INSTANTIATE",
diff --git a/lcm/lcm/nf/views/change_vnf_flavour_view.py b/lcm/lcm/nf/views/change_vnf_flavour_view.py
index 732a42ac..f426fab3 100644
--- a/lcm/lcm/nf/views/change_vnf_flavour_view.py
+++ b/lcm/lcm/nf/views/change_vnf_flavour_view.py
@@ -27,6 +27,7 @@ from lcm.pub.exceptions import NFLCMExceptionConflict
 from lcm.pub.utils.jobutil import JobUtil
 from lcm.pub.database.models import NfInstModel
 from lcm.nf.const import VNF_STATUS
+from lcm.nf.biz.change_vnf_flavour import ChangeVnfFlavour
 from .common import view_safe_call_with_log
 
 logger = logging.getLogger(__name__)
@@ -54,7 +55,7 @@ class ChangeVnfFlavourView(APIView):
         JobUtil.add_job_status(job_id, 0, "CHG_VNF_FLAVOUR_READY")
         self.chg_flavour_pre_check(instanceid, job_id)
 
-        # TODO: call biz logic
+        ChangeVnfFlavour(chg_flavour_serializer.data, instanceid, job_id).start()
 
         response = Response(data={"jobId": job_id},
                             status=status.HTTP_202_ACCEPTED)