Heat templates for deploying OpenStack
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#!/usr/bin/env python3
#
# Copyright 2018 Red Hat Inc.
#
# 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 re
import sys
HCLOG = '/var/log/collectd/healthchecks.stdout'
START_RE = re.compile(
r'(?P<timestamp>\w{3} \d{2} \d{2}\:\d{2}\:\d{2}) (?P<host>[\w\-\.\:]*) systemd\[.*\]: Started /usr/bin/podman healthcheck run (?P<container_id>\w*)')
EXEC_RE = re.compile(
r'(?P<timestamp>\w{3} \d{2} \d{2}\:\d{2}\:\d{2}) (?P<host>[\w\-\.\:]*) podman\[(?P<pid>\d*)\]: (?P<trash>.*) container exec (?P<container_id>\w*) \(.*name=(?P<container_name>\w*).*\)')
RESULT_RE = re.compile(
r'(?P<timestamp>\w{3} \d{2} \d{2}\:\d{2}\:\d{2}) (?P<host>[\w\-\.\:]*) podman\[(?P<pid>\d*)\]: (?P<result>(un)?healthy)')
def process_healthcheck_output(path_to_log):
"""Process saved output of health checks and returns list of unhealthy
containers.
"""
data = {}
pid_map = {}
with open(path_to_log, "r+") as logfile:
for line in logfile:
match = START_RE.search(line)
if match:
item = data.setdefault(match.group('container_id'), {})
item['timestamp_start'] = match.group('timestamp')
item['host'] = match.group('host')
continue
match = EXEC_RE.search(line)
if match:
item = data.setdefault(match.group('container_id'), {})
item['container_name'] = match.group('container_name')
item['host'] = match.group('host')
item['pid'] = match.group('pid')
pid_map[match.group('pid')] = match.group('container_id')
continue
match = RESULT_RE.search(line)
if match:
if match.group('pid') not in pid_map:
continue
item = data[pid_map[match.group('pid')]]
item['result'] = match.group('result')
item['timestamp_end'] = match.group('timestamp')
# truncate the file
with open(HCLOG, "w") as logfile:
pass
rc, output = 0, []
for cid, item in data.items():
if 'result' not in item:
continue
if item['result'] != 'healthy' and rc != 2:
rc = 2 if item['result'] == 'unhealthy' else 1
output.append({
'container': cid,
'service': item['container_name'],
'status': item['result'],
'healthy': int(item['result'] == 'healthy'),
})
return rc, output
if __name__ == "__main__":
rc, status = process_healthcheck_output(HCLOG)
print(json.dumps(status))
sys.exit(rc)