Source code for octavia.amphorae.backends.agent.api_server.haproxy_compatibility

# Copyright 2017 Rackspace, US 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
# 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 re
import subprocess

from oslo_log import log as logging

LOG = logging.getLogger(__name__)

[docs]def get_haproxy_versions(): """Get major and minor version number from haproxy :returns major_version: The major version digit :returns minor_version: The minor version digit """ cmd = "haproxy -v" version = subprocess.check_output(cmd.split(), stderr=subprocess.STDOUT) version_re ='.*version (.+?)\.(.+?)(\.|-dev).*', version.decode('utf-8')) major_version = int( minor_version = int( return major_version, minor_version
[docs]def process_cfg_for_version_compat(haproxy_cfg): major, minor = get_haproxy_versions() # Versions less than 1.6 do not support external health checks # Removed those configuration times if major < 2 and minor < 6: LOG.warning("Found %(major)s.%(minor)s version of haproxy. " "Disabling external checks. Health monitor of type " "PING will revert to TCP.", {'major': major, 'minor': minor}) haproxy_cfg = re.sub(r" * ?.*external-check ?.*\s", "", haproxy_cfg) return haproxy_cfg