| Illyoung Choi | 8b097c9 | 2019-08-01 12:38:06 -0700 | [diff] [blame^] | 1 | # Copyright 2019-present Open Networking Foundation |
| 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 json |
| 16 | from xossynchronizer.event_steps.eventstep import EventStep |
| 17 | from cord_workflow_controller_client.probe import Probe |
| 18 | |
| 19 | |
| 20 | class CORDWorkflowEventProbe(EventStep): |
| 21 | # topics = ["onu.events", "dhcp.events", "authentication.events"] |
| 22 | topics = ['*.events'] |
| 23 | technology = 'kafka' |
| 24 | controller_url = 'http://controller:3030' |
| 25 | retry_conn_max = 3 |
| 26 | |
| 27 | def __init__(self, *args, **kwargs): |
| 28 | super(CORDWorkflowEventProbe, self).__init__(*args, **kwargs) |
| 29 | |
| 30 | self.connected = False |
| 31 | self.retry = 0 |
| 32 | self.connect() |
| 33 | |
| 34 | def connect(self): |
| 35 | if not self.connected: |
| 36 | if self.retry > self.retry_conn_max: |
| 37 | self.log.info( |
| 38 | 'Could not connect to Workflow Controller (%s)...' % |
| 39 | self.controller_url |
| 40 | ) |
| 41 | self.probe = None |
| 42 | self.connected = False |
| 43 | else: |
| 44 | try: |
| 45 | self.log.info( |
| 46 | 'Connecting to Workflow Controller (%s)...' % |
| 47 | self.controller_url |
| 48 | ) |
| 49 | |
| 50 | self.probe = Probe(logger=self.log) |
| 51 | self.probe.connect(self.controller_url) |
| 52 | self.connected = True |
| 53 | self.retry = 0 |
| 54 | except Exception: |
| 55 | self.probe = None |
| 56 | self.connected = False |
| 57 | self.retry += 1 |
| 58 | |
| 59 | def process_event(self, event): |
| 60 | if not self.connected: |
| 61 | self.connect() |
| 62 | |
| 63 | if self.connected: |
| 64 | topic = event.topic |
| 65 | # event is in json format |
| 66 | message = json.loads(event.value) |
| 67 | |
| 68 | self.log.info('Emitting an event (%s - %s)...' % (topic, message)) |
| 69 | self.probe.emit_event(topic, message) |
| 70 | self.log.info('Emitted an event (%s - %s)...' % (topic, message)) |
| 71 | else: |
| 72 | self.log.info('Skip emitting an event (%s - %s)...' % (topic, message)) |