99 lines
3.9 KiB
Python
99 lines
3.9 KiB
Python
# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
|
|
#
|
|
# 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 json
|
|
import logging
|
|
import monascastatsd
|
|
import time
|
|
|
|
from notification import Notification
|
|
from processors.base import BaseProcessor
|
|
from processors.kafka_consumer import KafkaConsumer
|
|
from processors.kafka_producer import KafkaProducer
|
|
from processors.notification_processor import NotificationProcessor
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class RetryEngine(object):
|
|
def __init__(self, config):
|
|
self._retry_interval = config['retry']['interval']
|
|
self._retry_max = config['retry']['max_attempts']
|
|
|
|
self._topics = {}
|
|
self._topics['notification_topic'] = config['kafka']['notification_topic']
|
|
self._topics['retry_topic'] = config['kafka']['notification_retry_topic']
|
|
|
|
self._statsd = monascastatsd.Client(name='monasca',
|
|
dimensions=BaseProcessor.dimensions)
|
|
|
|
self._consumer = KafkaConsumer(config['kafka']['url'],
|
|
config['zookeeper']['url'],
|
|
config['zookeeper']['notification_retry_path'],
|
|
config['kafka']['group'],
|
|
config['kafka']['notification_retry_topic'])
|
|
|
|
self._producer = KafkaProducer(config['kafka']['url'])
|
|
|
|
self._notifier = NotificationProcessor(config['notification_types'])
|
|
|
|
def run(self):
|
|
for raw_notification in self._consumer:
|
|
partition = raw_notification[0]
|
|
offset = raw_notification[1].offset
|
|
message = raw_notification[1].message.value
|
|
|
|
notification_data = json.loads(message)
|
|
|
|
ntype = notification_data['type']
|
|
name = notification_data['name']
|
|
addr = notification_data['address']
|
|
|
|
notification = Notification(ntype,
|
|
partition,
|
|
offset,
|
|
name,
|
|
addr,
|
|
notification_data['retry_count'],
|
|
notification_data['raw_alarm'])
|
|
|
|
wait_duration = self._retry_interval - (
|
|
time.time() - notification_data['notification_timestamp'])
|
|
|
|
if wait_duration > 0:
|
|
time.sleep(wait_duration)
|
|
|
|
sent, failed = self._notifier.send([notification])
|
|
|
|
if sent:
|
|
self._producer.publish(self._topics['notification_topic'], sent)
|
|
|
|
if failed:
|
|
notification.retry_count += 1
|
|
notification.notification_timestamp = time.time()
|
|
if notification.retry_count < self._retry_max:
|
|
log.error("retry failed for {} with name {} "
|
|
"at {}. "
|
|
"Saving for later retry.".format(ntype, name, addr))
|
|
self._producer.publish(self._topics['retry_topic'],
|
|
[notification])
|
|
else:
|
|
log.error("retry failed for {} with name {} "
|
|
"at {} after {} retries. "
|
|
"Giving up on retry."
|
|
.format(ntype, name, addr, self._retry_max))
|
|
|
|
self._consumer.commit([partition])
|