a42a2a8f3c
On charm upgrade the charm may switch to py3 packages. If so, ensure the old py2 packages are purged. If the purge occurs then restart services. Change-Id: I2f5d95d9688c48e97fbb9b8b11a23d4b6250e016 Closes-Bug: 1803451
853 lines
29 KiB
Python
Executable File
853 lines
29 KiB
Python
Executable File
# Copyright 2016 Canonical Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from collections import OrderedDict
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from copy import deepcopy
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from functools import partial
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import os
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import shutil
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import subprocess
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import uuid
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import glob
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import yaml
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from base64 import b64encode
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from charmhelpers.contrib.openstack import context, templating
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from charmhelpers.contrib.openstack.neutron import (
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neutron_plugin_attribute,
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)
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from charmhelpers.contrib.openstack.utils import (
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os_release,
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get_os_codename_install_source,
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configure_installation_source,
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incomplete_relation_data,
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is_unit_paused_set,
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make_assess_status_func,
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pause_unit,
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resume_unit,
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os_application_version_set,
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token_cache_pkgs,
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enable_memcache,
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CompareOpenStackReleases,
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reset_os_release,
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)
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from charmhelpers.core.hookenv import (
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charm_dir,
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config,
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log,
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DEBUG,
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relation_ids,
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related_units,
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relation_get,
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relation_set,
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local_unit,
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)
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from charmhelpers.fetch import (
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apt_update,
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apt_install,
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apt_upgrade,
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add_source,
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filter_missing_packages,
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apt_purge,
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apt_autoremove,
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)
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from charmhelpers.core.host import (
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lsb_release,
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CompareHostReleases,
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service_stop,
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service_start,
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service_restart,
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)
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from charmhelpers.contrib.hahelpers.cluster import (
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get_hacluster_config,
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)
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from charmhelpers.contrib.hahelpers.cluster import is_elected_leader
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import neutron_api_context
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TEMPLATES = 'templates/'
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CLUSTER_RES = 'grp_neutron_vips'
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# removed from original: charm-helper-sh
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BASE_PACKAGES = [
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'apache2',
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'haproxy',
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'python-keystoneclient',
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'python-mysqldb',
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'python-psycopg2',
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'python-six',
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'uuid',
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]
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KILO_PACKAGES = [
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'python-neutron-lbaas',
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'python-neutron-fwaas',
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'python-neutron-vpnaas',
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]
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PY3_PACKAGES = [
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'python3-neutron',
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'python3-neutron-lbaas',
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'python3-neutron-fwaas',
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'python3-neutron-dynamic-routing',
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'python3-networking-hyperv',
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'python3-memcache',
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]
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PURGE_PACKAGES = [
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'python-neutron',
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'python-neutron-lbaas',
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'python-neutron-fwaas',
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'python-neutron-vpnaas',
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'python-neutron-dynamic-routing',
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'python-networking-hyperv',
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'python-memcache',
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'python-keystoneclient',
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'python-mysqldb',
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'python-psycopg2',
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]
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VERSION_PACKAGE = 'neutron-common'
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BASE_SERVICES = [
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'neutron-server'
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]
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API_PORTS = {
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'neutron-server': 9696,
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}
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NEUTRON_CONF_DIR = "/etc/neutron"
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NEUTRON_CONF = '%s/neutron.conf' % NEUTRON_CONF_DIR
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NEUTRON_LBAAS_CONF = '%s/neutron_lbaas.conf' % NEUTRON_CONF_DIR
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NEUTRON_VPNAAS_CONF = '%s/neutron_vpnaas.conf' % NEUTRON_CONF_DIR
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HAPROXY_CONF = '/etc/haproxy/haproxy.cfg'
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APACHE_CONF = '/etc/apache2/sites-available/openstack_https_frontend'
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APACHE_24_CONF = '/etc/apache2/sites-available/openstack_https_frontend.conf'
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NEUTRON_DEFAULT = '/etc/default/neutron-server'
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CA_CERT_PATH = '/usr/local/share/ca-certificates/keystone_juju_ca_cert.crt'
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MEMCACHED_CONF = '/etc/memcached.conf'
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API_PASTE_INI = '%s/api-paste.ini' % NEUTRON_CONF_DIR
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# NOTE:(fnordahl) placeholder ml2_conf_srov.ini pointing users to ml2_conf.ini
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# Due to how neutron init scripts are laid out on various Linux
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# distributions we put the [ml2_sriov] section in ml2_conf.ini instead
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# of its default ml2_conf_sriov.ini location.
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ML2_SRIOV_INI = os.path.join(NEUTRON_CONF_DIR,
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'plugins/ml2/ml2_conf_sriov.ini')
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BASE_RESOURCE_MAP = OrderedDict([
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(NEUTRON_CONF, {
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'services': ['neutron-server'],
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'contexts': [neutron_api_context.NeutronAMQPContext(),
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context.SharedDBContext(
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user=config('database-user'),
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database=config('database'),
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ssl_dir=NEUTRON_CONF_DIR),
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neutron_api_context.IdentityServiceContext(
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service='neutron',
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service_user='neutron'),
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context.OSConfigFlagContext(),
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neutron_api_context.NeutronCCContext(),
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context.SyslogContext(),
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context.ZeroMQContext(),
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context.NotificationDriverContext(),
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context.BindHostContext(),
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context.WorkerConfigContext(),
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context.InternalEndpointContext(),
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context.MemcacheContext(),
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neutron_api_context.DesignateContext()],
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}),
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(NEUTRON_DEFAULT, {
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'services': ['neutron-server'],
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'contexts': [neutron_api_context.NeutronCCContext()],
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}),
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(API_PASTE_INI, {
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'services': ['neutron-server'],
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'contexts': [neutron_api_context.NeutronApiApiPasteContext()],
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}),
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(APACHE_CONF, {
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'contexts': [neutron_api_context.ApacheSSLContext()],
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'services': ['apache2'],
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}),
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(APACHE_24_CONF, {
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'contexts': [neutron_api_context.ApacheSSLContext()],
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'services': ['apache2'],
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}),
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(HAPROXY_CONF, {
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'contexts': [context.HAProxyContext(singlenode_mode=True),
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neutron_api_context.HAProxyContext()],
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'services': ['haproxy'],
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}),
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])
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# The interface is said to be satisfied if anyone of the interfaces in the
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# list has a complete context.
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REQUIRED_INTERFACES = {
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'database': ['shared-db'],
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'messaging': ['amqp'],
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'identity': ['identity-service'],
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}
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LIBERTY_RESOURCE_MAP = OrderedDict([
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(NEUTRON_LBAAS_CONF, {
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'services': ['neutron-server'],
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'contexts': [],
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}),
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(NEUTRON_VPNAAS_CONF, {
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'services': ['neutron-server'],
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'contexts': [],
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}),
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])
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NEUTRON_DB_INIT_RKEY = 'neutron-db-initialised'
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NEUTRON_DB_INIT_ECHO_RKEY = 'neutron-db-initialised-echo'
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def is_db_initialised(cluster_rid=None):
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"""
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Check whether a db intialisation has been performed by any peer unit.
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We base our decision on whether we or any of our peers has previously
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sent or echoed an initialisation notification.
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@param cluster_rid: current relation id. If none provided, all cluster
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relation ids will be checked.
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@return: True if there has been a db initialisation otherwise False.
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"""
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if cluster_rid:
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rids = [cluster_rid]
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else:
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rids = relation_ids('cluster')
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shared_db_rel_id = (relation_ids('shared-db') or [None])[0]
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if not shared_db_rel_id:
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return False
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for c_rid in rids:
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units = related_units(relid=c_rid) + [local_unit()]
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for unit in units:
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settings = relation_get(unit=unit, rid=c_rid) or {}
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for key in [NEUTRON_DB_INIT_RKEY, NEUTRON_DB_INIT_ECHO_RKEY]:
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if shared_db_rel_id in settings.get(key, ''):
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return True
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return False
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def is_new_dbinit_notification(init_id, echoed_init_id):
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"""Returns True if we have a received a new db initialisation notification
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from a peer unit and we have not previously echoed it to indicate that we
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have already performed the necessary actions as result.
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Initialisation notification is expected to be of the format:
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<unit-id-leader-unit>-<shared-db-rel-id>-<uuid>
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@param init_db: received initialisation notification.
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@param echoed_init_db: value currently set for the echo key.
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@return: True if new notification and False if not.
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"""
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shared_db_rel_id = (relation_ids('shared-db') or [None])[0]
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return (shared_db_rel_id and init_id and
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(local_unit() not in init_id) and
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(shared_db_rel_id in init_id) and
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(echoed_init_id != init_id))
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def check_local_db_actions_complete():
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"""Check if we have received db init'd notification and restart services
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if we have not already.
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NOTE: this must only be called from peer relation context.
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"""
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if not is_db_initialised():
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return
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settings = relation_get() or {}
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if settings:
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init_id = settings.get(NEUTRON_DB_INIT_RKEY)
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echoed_init_id = relation_get(unit=local_unit(),
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attribute=NEUTRON_DB_INIT_ECHO_RKEY)
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# If we have received an init notification from a peer unit
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# (assumed to be the leader) then restart neutron-api and echo the
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# notification and don't restart again unless we receive a new
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# (different) notification.
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if is_new_dbinit_notification(init_id, echoed_init_id):
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if not is_unit_paused_set():
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log("Restarting neutron services following db "
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"initialisation", level=DEBUG)
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service_restart('neutron-server')
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# Echo notification
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relation_set(**{NEUTRON_DB_INIT_ECHO_RKEY: init_id})
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def api_port(service):
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return API_PORTS[service]
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def additional_install_locations(plugin, source):
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'''
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Add any required additional package locations for the charm, based
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on the Neutron plugin being used. This will also force an immediate
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package upgrade.
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'''
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release = get_os_codename_install_source(source)
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if plugin == 'Calico':
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if config('calico-origin'):
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calico_source = config('calico-origin')
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elif release in ('icehouse', 'juno', 'kilo'):
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# Prior to the Liberty release, Calico's Nova and Neutron changes
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# were not fully upstreamed, so we need to point to a
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# release-specific PPA that includes Calico-specific Nova and
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# Neutron packages.
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calico_source = 'ppa:project-calico/%s' % release
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else:
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# From Liberty onwards, we can point to a PPA that does not include
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# any patched OpenStack packages, and hence is independent of the
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# OpenStack release.
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calico_source = 'ppa:project-calico/calico-1.4'
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add_source(calico_source)
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elif plugin == 'midonet':
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midonet_origin = config('midonet-origin')
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release_num = midonet_origin.split('-')[1]
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if midonet_origin.startswith('mem'):
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with open(os.path.join(charm_dir(),
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'files/midokura.key')) as midokura_gpg_key:
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priv_gpg_key = midokura_gpg_key.read()
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mem_username = config('mem-username')
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mem_password = config('mem-password')
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if release in ('juno', 'kilo', 'liberty'):
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add_source(
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'deb http://%s:%s@apt.midokura.com/openstack/%s/stable '
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'trusty main' % (mem_username, mem_password, release),
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key=priv_gpg_key)
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add_source('http://%s:%s@apt.midokura.com/midonet/v%s/stable '
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'main' % (mem_username, mem_password, release_num),
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key=priv_gpg_key)
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else:
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with open(os.path.join(charm_dir(),
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'files/midonet.key')) as midonet_gpg_key:
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pub_gpg_key = midonet_gpg_key.read()
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if release in ('juno', 'kilo', 'liberty'):
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add_source(
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'deb http://repo.midonet.org/openstack-%s stable main' %
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release, key=pub_gpg_key)
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add_source('deb http://repo.midonet.org/midonet/v%s stable main' %
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release_num, key=pub_gpg_key)
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apt_update(fatal=True)
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apt_upgrade(fatal=True)
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def force_etcd_restart():
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'''
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If etcd has been reconfigured we need to force it to fully restart.
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This is necessary because etcd has some config flags that it ignores
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after the first time it starts, so we need to make it forget them.
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'''
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service_stop('etcd')
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for directory in glob.glob('/var/lib/etcd/*'):
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shutil.rmtree(directory)
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if not is_unit_paused_set():
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service_start('etcd')
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def manage_plugin():
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return config('manage-neutron-plugin-legacy-mode')
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def determine_packages(source=None):
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# currently all packages match service names
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release = get_os_codename_install_source(source)
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cmp_release = CompareOpenStackReleases(release)
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packages = deepcopy(BASE_PACKAGES)
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if cmp_release >= 'rocky':
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packages.extend(PY3_PACKAGES)
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for v in resource_map().values():
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packages.extend(v['services'])
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if manage_plugin():
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pkgs = neutron_plugin_attribute(config('neutron-plugin'),
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'server_packages',
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'neutron')
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packages.extend(pkgs)
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packages.extend(token_cache_pkgs(release=release))
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if cmp_release < 'rocky':
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if cmp_release >= 'kilo':
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packages.extend(KILO_PACKAGES)
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if cmp_release >= 'ocata':
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packages.append('python-neutron-dynamic-routing')
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if cmp_release >= 'pike':
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packages.remove('python-neutron-vpnaas')
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if release == 'kilo' or cmp_release >= 'mitaka':
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packages.append('python-networking-hyperv')
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if config('neutron-plugin') == 'vsp':
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nuage_pkgs = config('nuage-packages').split()
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packages.extend(nuage_pkgs)
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if cmp_release >= 'rocky':
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packages = [p for p in packages if not p.startswith('python-')]
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return list(set(packages))
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def determine_purge_packages():
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'''Return a list of packages to purge for the current OS release'''
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cmp_os_source = CompareOpenStackReleases(os_release('neutron-common'))
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if cmp_os_source >= 'rocky':
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return PURGE_PACKAGES
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return []
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def remove_old_packages():
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'''Purge any packages that need ot be removed.
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:returns: bool Whether packages were removed.
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'''
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installed_packages = filter_missing_packages(determine_purge_packages())
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if installed_packages:
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apt_purge(installed_packages, fatal=True)
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apt_autoremove(purge=True, fatal=True)
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return bool(installed_packages)
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def determine_ports():
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'''Assemble a list of API ports for services we are managing'''
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ports = []
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for services in restart_map().values():
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for service in services:
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try:
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ports.append(API_PORTS[service])
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except KeyError:
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pass
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return list(set(ports))
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def resource_map(release=None):
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'''
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Dynamically generate a map of resources that will be managed for a single
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hook execution.
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'''
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release = release or os_release('neutron-common')
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resource_map = deepcopy(BASE_RESOURCE_MAP)
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if CompareOpenStackReleases(release) >= 'liberty':
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resource_map.update(LIBERTY_RESOURCE_MAP)
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if os.path.exists('/etc/apache2/conf-available'):
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resource_map.pop(APACHE_CONF)
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else:
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resource_map.pop(APACHE_24_CONF)
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if manage_plugin():
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# add neutron plugin requirements. nova-c-c only needs the
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# neutron-server associated with configs, not the plugin agent.
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plugin = config('neutron-plugin')
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conf = neutron_plugin_attribute(plugin, 'config', 'neutron')
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ctxts = (neutron_plugin_attribute(plugin, 'contexts', 'neutron') or
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[])
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services = neutron_plugin_attribute(plugin, 'server_services',
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'neutron')
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resource_map[conf] = {}
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resource_map[conf]['services'] = services
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resource_map[conf]['contexts'] = ctxts
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resource_map[conf]['contexts'].append(
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neutron_api_context.NeutronCCContext())
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if ('kilo' <= CompareOpenStackReleases(release) <= 'mitaka' and
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config('enable-sriov')):
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resource_map[ML2_SRIOV_INI] = {}
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resource_map[ML2_SRIOV_INI]['services'] = services
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resource_map[ML2_SRIOV_INI]['contexts'] = []
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else:
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resource_map[NEUTRON_CONF]['contexts'].append(
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neutron_api_context.NeutronApiSDNContext()
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)
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resource_map[NEUTRON_DEFAULT]['contexts'] = \
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[neutron_api_context.NeutronApiSDNConfigFileContext()]
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if enable_memcache(release=release):
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resource_map[MEMCACHED_CONF] = {
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'contexts': [context.MemcacheContext()],
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'services': ['memcached']}
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return resource_map
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|
def register_configs(release=None):
|
|
release = release or os_release('neutron-common')
|
|
configs = templating.OSConfigRenderer(templates_dir=TEMPLATES,
|
|
openstack_release=release)
|
|
for cfg, rscs in resource_map().items():
|
|
configs.register(cfg, rscs['contexts'])
|
|
return configs
|
|
|
|
|
|
def restart_map():
|
|
return OrderedDict([(cfg, v['services'])
|
|
for cfg, v in resource_map().items()
|
|
if v['services']])
|
|
|
|
|
|
def services():
|
|
''' Returns a list of services associate with this charm '''
|
|
_services = []
|
|
for v in restart_map().values():
|
|
_services = _services + v
|
|
return list(set(_services))
|
|
|
|
|
|
def keystone_ca_cert_b64():
|
|
'''Returns the local Keystone-provided CA cert if it exists, or None.'''
|
|
if not os.path.isfile(CA_CERT_PATH):
|
|
return None
|
|
with open(CA_CERT_PATH) as _in:
|
|
return b64encode(_in.read())
|
|
|
|
|
|
def do_openstack_upgrade(configs):
|
|
"""
|
|
Perform an upgrade. Takes care of upgrading packages, rewriting
|
|
configs, database migrations and potentially any other post-upgrade
|
|
actions.
|
|
|
|
:param configs: The charms main OSConfigRenderer object.
|
|
"""
|
|
cur_os_rel = os_release('neutron-common')
|
|
new_src = config('openstack-origin')
|
|
new_os_rel = get_os_codename_install_source(new_src)
|
|
|
|
log('Performing OpenStack upgrade to %s.' % (new_os_rel))
|
|
|
|
configure_installation_source(new_src)
|
|
dpkg_opts = [
|
|
'--option', 'Dpkg::Options::=--force-confnew',
|
|
'--option', 'Dpkg::Options::=--force-confdef',
|
|
]
|
|
apt_update(fatal=True)
|
|
apt_upgrade(options=dpkg_opts, fatal=True, dist=True)
|
|
reset_os_release()
|
|
pkgs = determine_packages(new_src)
|
|
# Sort packages just to make unit tests easier
|
|
pkgs.sort()
|
|
apt_install(packages=pkgs,
|
|
options=dpkg_opts,
|
|
fatal=True)
|
|
|
|
remove_old_packages()
|
|
|
|
# set CONFIGS to load templates from new release
|
|
configs.set_release(openstack_release=new_os_rel)
|
|
# Before kilo it's nova-cloud-controllers job
|
|
if is_elected_leader(CLUSTER_RES):
|
|
# Stamping seems broken and unnecessary in liberty (Bug #1536675)
|
|
if CompareOpenStackReleases(os_release('neutron-common')) < 'liberty':
|
|
stamp_neutron_database(cur_os_rel)
|
|
migrate_neutron_database(upgrade=True)
|
|
|
|
|
|
def stamp_neutron_database(release):
|
|
'''Stamp the database with the current release before upgrade.'''
|
|
log('Stamping the neutron database with release %s.' % release)
|
|
plugin = config('neutron-plugin')
|
|
cmd = ['neutron-db-manage',
|
|
'--config-file', NEUTRON_CONF,
|
|
'--config-file', neutron_plugin_attribute(plugin,
|
|
'config',
|
|
'neutron'),
|
|
'stamp',
|
|
release]
|
|
subprocess.check_output(cmd)
|
|
|
|
|
|
def nuage_vsp_juno_neutron_migration():
|
|
log('Nuage VSP with Juno Relase')
|
|
nuage_migration_db_path = '/usr/lib/python2.7/dist-packages/'\
|
|
'neutron/db/migration/nuage'
|
|
nuage_migrate_hybrid_file_path = os.path.join(
|
|
nuage_migration_db_path, 'migrate_hybrid_juno.py')
|
|
nuage_config_file = neutron_plugin_attribute(config('neutron-plugin'),
|
|
'config', 'neutron')
|
|
if os.path.exists(nuage_migration_db_path):
|
|
if os.path.exists(nuage_migrate_hybrid_file_path):
|
|
if os.path.exists(nuage_config_file):
|
|
log('Running Migartion Script for Juno Release')
|
|
cmd = 'sudo python ' + nuage_migrate_hybrid_file_path + \
|
|
' --config-file ' + nuage_config_file + \
|
|
' --config-file ' + NEUTRON_CONF
|
|
log(cmd)
|
|
subprocess.check_output(cmd, shell=True)
|
|
else:
|
|
e = nuage_config_file+' doesnot exist'
|
|
log(e)
|
|
raise Exception(e)
|
|
else:
|
|
e = nuage_migrate_hybrid_file_path+' doesnot exists'
|
|
log(e)
|
|
raise Exception(e)
|
|
else:
|
|
e = nuage_migration_db_path+' doesnot exists'
|
|
log(e)
|
|
raise Exception(e)
|
|
|
|
|
|
def migrate_neutron_database(upgrade=False):
|
|
'''Initializes a new database or upgrades an existing database.'''
|
|
|
|
if not upgrade and is_db_initialised():
|
|
log("Database is already initialised.", level=DEBUG)
|
|
return
|
|
|
|
log('Migrating the neutron database.')
|
|
if(os_release('neutron-server') == 'juno' and
|
|
config('neutron-plugin') == 'vsp'):
|
|
nuage_vsp_juno_neutron_migration()
|
|
else:
|
|
plugin = config('neutron-plugin')
|
|
cmd = ['neutron-db-manage',
|
|
'--config-file', NEUTRON_CONF,
|
|
'--config-file', neutron_plugin_attribute(plugin,
|
|
'config',
|
|
'neutron'),
|
|
'upgrade',
|
|
'head']
|
|
subprocess.check_output(cmd)
|
|
|
|
cluster_rids = relation_ids('cluster')
|
|
if cluster_rids:
|
|
# Notify peers so that services get restarted
|
|
log("Notifying peer(s) that db is initialised and restarting services",
|
|
level=DEBUG)
|
|
for r_id in cluster_rids:
|
|
if not is_unit_paused_set():
|
|
service_restart('neutron-server')
|
|
|
|
# Notify peers that tey should also restart their services
|
|
shared_db_rel_id = (relation_ids('shared-db') or [None])[0]
|
|
id = "{}-{}-{}".format(local_unit(), shared_db_rel_id,
|
|
uuid.uuid4())
|
|
relation_set(relation_id=r_id, **{NEUTRON_DB_INIT_RKEY: id})
|
|
|
|
|
|
def setup_ipv6():
|
|
ubuntu_rel = lsb_release()['DISTRIB_CODENAME'].lower()
|
|
if CompareHostReleases(ubuntu_rel) < "trusty":
|
|
raise Exception("IPv6 is not supported in the charms for Ubuntu "
|
|
"versions less than Trusty 14.04")
|
|
|
|
# Need haproxy >= 1.5.3 for ipv6 so for Trusty if we are <= Kilo we need to
|
|
# use trusty-backports otherwise we can use the UCA.
|
|
this_os_release = os_release('neutron-server')
|
|
if (ubuntu_rel == 'trusty' and
|
|
CompareOpenStackReleases(this_os_release) < 'liberty'):
|
|
add_source('deb http://archive.ubuntu.com/ubuntu trusty-backports '
|
|
'main')
|
|
apt_update()
|
|
apt_install('haproxy/trusty-backports', fatal=True)
|
|
|
|
|
|
class FakeNeutronClient(object):
|
|
'''Fake wrapper for Neutron Client'''
|
|
|
|
def __init__(self, username, password, tenant_name,
|
|
auth_url, region_name):
|
|
self.env = {
|
|
'OS_USERNAME': username,
|
|
'OS_PASSWORD': password,
|
|
'OS_TENANT_NAME': tenant_name,
|
|
'OS_AUTH_URL': auth_url,
|
|
'OS_REGION': region_name,
|
|
}
|
|
|
|
def list_routers(self):
|
|
cmd = ['neutron', 'router-list', '-f', 'yaml']
|
|
try:
|
|
routers = subprocess.check_output(
|
|
cmd, env=self.env).decode('UTF-8')
|
|
return {'routers': yaml.load(routers)}
|
|
except subprocess.CalledProcessError:
|
|
return {'routers': []}
|
|
|
|
|
|
def get_neutron_client():
|
|
''' Return a neutron client if possible '''
|
|
env = neutron_api_context.IdentityServiceContext()()
|
|
if not env:
|
|
log('Unable to check resources at this time')
|
|
return None
|
|
|
|
auth_url = '{auth_protocol}://{auth_host}:{auth_port}/v2.0'.format(**env)
|
|
|
|
return FakeNeutronClient(username=env['admin_user'],
|
|
password=env['admin_password'],
|
|
tenant_name=env['admin_tenant_name'],
|
|
auth_url=auth_url,
|
|
region_name=env['region'])
|
|
|
|
|
|
def router_feature_present(feature):
|
|
''' Check For dvr enabled routers '''
|
|
neutron_client = get_neutron_client()
|
|
for router in neutron_client.list_routers()['routers']:
|
|
if router.get(feature, False):
|
|
return True
|
|
return False
|
|
|
|
l3ha_router_present = partial(router_feature_present, feature='ha')
|
|
|
|
dvr_router_present = partial(router_feature_present, feature='distributed')
|
|
|
|
|
|
def neutron_ready():
|
|
''' Check if neutron is ready by running arbitrary query'''
|
|
neutron_client = get_neutron_client()
|
|
if not neutron_client:
|
|
log('No neutron client, neutron not ready')
|
|
return False
|
|
try:
|
|
neutron_client.list_routers()
|
|
log('neutron client ready')
|
|
return True
|
|
except:
|
|
log('neutron query failed, neutron not ready ')
|
|
return False
|
|
|
|
|
|
def get_optional_interfaces():
|
|
"""Return the optional interfaces that should be checked if the relavent
|
|
relations have appeared.
|
|
:returns: {general_interface: [specific_int1, specific_int2, ...], ...}
|
|
"""
|
|
optional_interfaces = {}
|
|
if relation_ids('ha'):
|
|
optional_interfaces['ha'] = ['cluster']
|
|
return optional_interfaces
|
|
|
|
|
|
def check_optional_relations(configs):
|
|
"""Check that if we have a relation_id for high availability that we can
|
|
get the hacluster config. If we can't then we are blocked. This function
|
|
is called from assess_status/set_os_workload_status as the charm_func and
|
|
needs to return either "unknown", "" if there is no problem or the status,
|
|
message if there is a problem.
|
|
|
|
:param configs: an OSConfigRender() instance.
|
|
:return 2-tuple: (string, string) = (status, message)
|
|
"""
|
|
if relation_ids('ha'):
|
|
try:
|
|
get_hacluster_config()
|
|
except:
|
|
return ('blocked',
|
|
'hacluster missing configuration: '
|
|
'vip, vip_iface, vip_cidr')
|
|
# return 'unknown' as the lowest priority to not clobber an existing
|
|
# status.
|
|
return 'unknown', ''
|
|
|
|
|
|
def is_api_ready(configs):
|
|
return (not incomplete_relation_data(configs, REQUIRED_INTERFACES))
|
|
|
|
|
|
def assess_status(configs):
|
|
"""Assess status of current unit
|
|
Decides what the state of the unit should be based on the current
|
|
configuration.
|
|
SIDE EFFECT: calls set_os_workload_status(...) which sets the workload
|
|
status of the unit.
|
|
Also calls status_set(...) directly if paused state isn't complete.
|
|
@param configs: a templating.OSConfigRenderer() object
|
|
@returns None - this function is executed for its side-effect
|
|
"""
|
|
assess_status_func(configs)()
|
|
os_application_version_set(VERSION_PACKAGE)
|
|
|
|
|
|
def assess_status_func(configs):
|
|
"""Helper function to create the function that will assess_status() for
|
|
the unit.
|
|
Uses charmhelpers.contrib.openstack.utils.make_assess_status_func() to
|
|
create the appropriate status function and then returns it.
|
|
Used directly by assess_status() and also for pausing and resuming
|
|
the unit.
|
|
|
|
NOTE: REQUIRED_INTERFACES is augmented with the optional interfaces
|
|
depending on the current config before being passed to the
|
|
make_assess_status_func() function.
|
|
|
|
NOTE(ajkavanagh) ports are not checked due to race hazards with services
|
|
that don't behave sychronously w.r.t their service scripts. e.g.
|
|
apache2.
|
|
|
|
@param configs: a templating.OSConfigRenderer() object
|
|
@return f() -> None : a function that assesses the unit's workload status
|
|
"""
|
|
required_interfaces = REQUIRED_INTERFACES.copy()
|
|
required_interfaces.update(get_optional_interfaces())
|
|
return make_assess_status_func(
|
|
configs, required_interfaces,
|
|
charm_func=check_optional_relations,
|
|
services=services(), ports=None)
|
|
|
|
|
|
def pause_unit_helper(configs):
|
|
"""Helper function to pause a unit, and then call assess_status(...) in
|
|
effect, so that the status is correctly updated.
|
|
Uses charmhelpers.contrib.openstack.utils.pause_unit() to do the work.
|
|
@param configs: a templating.OSConfigRenderer() object
|
|
@returns None - this function is executed for its side-effect
|
|
"""
|
|
_pause_resume_helper(pause_unit, configs)
|
|
|
|
|
|
def resume_unit_helper(configs):
|
|
"""Helper function to resume a unit, and then call assess_status(...) in
|
|
effect, so that the status is correctly updated.
|
|
Uses charmhelpers.contrib.openstack.utils.resume_unit() to do the work.
|
|
@param configs: a templating.OSConfigRenderer() object
|
|
@returns None - this function is executed for its side-effect
|
|
"""
|
|
_pause_resume_helper(resume_unit, configs)
|
|
|
|
|
|
def _pause_resume_helper(f, configs):
|
|
"""Helper function that uses the make_assess_status_func(...) from
|
|
charmhelpers.contrib.openstack.utils to create an assess_status(...)
|
|
function that can be used with the pause/resume of the unit
|
|
@param f: the function to be used with the assess_status(...) function
|
|
@returns None - this function is executed for its side-effect
|
|
"""
|
|
# TODO(ajkavanagh) - ports= has been left off because of the race hazard
|
|
# that exists due to service_start()
|
|
f(assess_status_func(configs),
|
|
services=services(),
|
|
ports=None)
|