d777191c701cf9b004f5f699eb516a6a87cbfeab
[vfc/nfvo/lcm.git] / lcm / ns / ns_heal.py
1 # Copyright 2017 Intel Corporation.
2 #
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
6 #
7 #         http://www.apache.org/licenses/LICENSE-2.0
8 #
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
14
15 import logging
16 import threading
17 import traceback
18 import datetime
19 import time
20
21 from lcm.ns.const import NS_INST_STATUS
22 from lcm.pub.database.models import JobModel, NSInstModel
23 from lcm.ns.vnfs.heal_vnfs import NFHealService
24 from lcm.pub.exceptions import NSLCMException
25 from lcm.pub.utils.jobutil import JobUtil, JOB_MODEL_STATUS
26 from lcm.pub.utils.values import ignore_case_get
27
28 JOB_ERROR = 255
29 logger = logging.getLogger(__name__)
30
31
32 class NSHealService(threading.Thread):
33     def __init__(self, ns_instance_id, request_data, job_id):
34         super(NSHealService, self).__init__()
35         self.ns_instance_id = ns_instance_id
36         self.request_data = request_data
37         self.job_id = job_id
38
39         self.heal_vnf_data = ''
40
41     def run(self):
42         try:
43             self.do_biz()
44         except NSLCMException as e:
45             JobUtil.add_job_status(self.job_id, JOB_ERROR, e.message)
46         except:
47             logger.error(traceback.format_exc())
48             JobUtil.add_job_status(self.job_id, JOB_ERROR, 'ns heal fail')
49
50     def do_biz(self):
51         self.update_job(1, desc='ns heal start')
52         self.get_and_check_params()
53         self.update_ns_status(NS_INST_STATUS.HEALING)
54         self.do_vnfs_heal()
55         self.update_ns_status(NS_INST_STATUS.ACTIVE)
56         self.update_job(100, desc='ns heal success')
57
58     def get_and_check_params(self):
59         ns_info = NSInstModel.objects.filter(id=self.ns_instance_id)
60         if not ns_info:
61             logger.error('NS [id=%s] does not exist' % self.ns_instance_id)
62             raise NSLCMException('NS [id=%s] does not exist' % self.ns_instance_id)
63         self.heal_vnf_data = ignore_case_get(self.request_data, 'healVnfData')
64         if not self.heal_vnf_data:
65             logger.error('healVnfData parameter does not exist or value is incorrect.')
66             raise NSLCMException('healVnfData parameter does not exist or value incorrect.')
67
68     def do_vnfs_heal(self):
69         vnf_heal_params = self.prepare_vnf_heal_params(self.heal_vnf_data)
70         # count = len(self.heal_vnf_data)
71         # Only one VNF is supported to heal.
72         status = self.do_vnf_heal(vnf_heal_params, 15)
73         if status is JOB_MODEL_STATUS.FINISHED:
74             logger.info('nf[%s] heal handle end' % vnf_heal_params.get('vnfInstanceId'))
75             self.update_job(90,
76                             desc='nf[%s] heal handle end' % vnf_heal_params.get('vnfInstanceId'))
77         else:
78             logger.error('nf heal failed')
79             raise NSLCMException('nf heal failed')
80
81     def do_vnf_heal(self, vnf_heal_params, progress):
82         vnf_instance_id = vnf_heal_params.get('vnfInstanceId')
83         nf_service = NFHealService(vnf_instance_id, vnf_heal_params)
84         nf_service.start()
85         self.update_job(progress, desc='nf[%s] heal handle start' % vnf_instance_id)
86         status = self.wait_job_finish(nf_service.job_id)
87         return status
88
89     def prepare_vnf_heal_params(self, vnf_data):
90         vnf_instance_id = ignore_case_get(vnf_data, 'vnfInstanceId')
91         cause = ignore_case_get(vnf_data, "cause")
92         additional_params = ignore_case_get(vnf_data, "additionalParams")
93         result = {
94             "vnfInstanceId": vnf_instance_id,
95             "cause": cause,
96             "additionalParams": additional_params
97         }
98         return result
99
100     @staticmethod
101     def wait_job_finish(sub_job_id, timeout=3600):
102         query_interval = 2
103         start_time = end_time = datetime.datetime.now()
104         while (end_time - start_time).seconds < timeout:
105             job_result = JobModel.objects.get(jobid=sub_job_id)
106             time.sleep(query_interval)
107             end_time = datetime.datetime.now()
108             if job_result.progress == 100:
109                 return JOB_MODEL_STATUS.FINISHED
110             elif job_result.progress > 100:
111                 return JOB_MODEL_STATUS.ERROR
112             else:
113                 continue
114         return JOB_MODEL_STATUS.TIMEOUT
115
116     def update_job(self, progress, desc=''):
117         JobUtil.add_job_status(self.job_id, progress, desc)
118
119     def update_ns_status(self, status):
120         NSInstModel.objects.filter(id=self.ns_instance_id).update(status=status)