392 lines
12 KiB
Python
392 lines
12 KiB
Python
# 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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import os
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import uuid
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import subprocess
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from collections import OrderedDict
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from charmhelpers.contrib.openstack import (
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templating,
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context,
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)
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from ceilometer_contexts import (
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ApacheSSLContext,
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LoggingConfigContext,
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MongoDBContext,
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CeilometerContext,
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HAProxyContext,
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CEILOMETER_PORT,
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)
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from charmhelpers.contrib.openstack.utils import (
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get_os_codename_package,
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get_os_codename_install_source,
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configure_installation_source,
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pause_unit,
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resume_unit,
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make_assess_status_func,
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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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)
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from charmhelpers.core.hookenv import config, log
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from charmhelpers.fetch import apt_update, apt_install, apt_upgrade
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from charmhelpers.core.host import init_is_systemd
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from copy import deepcopy
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HAPROXY_CONF = '/etc/haproxy/haproxy.cfg'
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CEILOMETER_CONF_DIR = "/etc/ceilometer"
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CEILOMETER_CONF = "%s/ceilometer.conf" % CEILOMETER_CONF_DIR
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CEILOMETER_API_SYSTEMD_CONF = (
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'/etc/systemd/system/ceilometer-api.service.d/override.conf'
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)
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HTTPS_APACHE_CONF = "/etc/apache2/sites-available/openstack_https_frontend"
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HTTPS_APACHE_24_CONF = "/etc/apache2/sites-available/" \
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"openstack_https_frontend.conf"
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CLUSTER_RES = 'grp_ceilometer_vips'
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MEMCACHED_CONF = '/etc/memcached.conf'
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CEILOMETER_BASE_SERVICES = [
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'ceilometer-agent-central',
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'ceilometer-collector',
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'ceilometer-api',
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]
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ICEHOUSE_SERVICES = [
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'ceilometer-alarm-notifier',
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'ceilometer-alarm-evaluator',
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'ceilometer-agent-notification'
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]
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MITAKA_SERVICES = [
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'ceilometer-agent-notification'
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]
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CEILOMETER_DB = "ceilometer"
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CEILOMETER_SERVICE = "ceilometer"
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CEILOMETER_BASE_PACKAGES = [
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'haproxy',
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'apache2',
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'ceilometer-agent-central',
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'ceilometer-collector',
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'ceilometer-api',
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'python-pymongo',
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]
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ICEHOUSE_PACKAGES = [
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'ceilometer-alarm-notifier',
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'ceilometer-alarm-evaluator',
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'ceilometer-agent-notification'
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]
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MITAKA_PACKAGES = [
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'ceilometer-agent-notification'
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]
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REQUIRED_INTERFACES = {
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'database': ['mongodb'],
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'messaging': ['amqp'],
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'identity': ['identity-service'],
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}
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CEILOMETER_ROLE = "ResellerAdmin"
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SVC = 'ceilometer'
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CONFIG_FILES = OrderedDict([
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(CEILOMETER_CONF, {
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'hook_contexts': [context.IdentityServiceContext(service=SVC,
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service_user=SVC),
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context.AMQPContext(ssl_dir=CEILOMETER_CONF_DIR),
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LoggingConfigContext(),
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MongoDBContext(),
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CeilometerContext(),
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context.SyslogContext(),
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HAProxyContext(),
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context.MemcacheContext()],
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'services': CEILOMETER_BASE_SERVICES
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}),
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(CEILOMETER_API_SYSTEMD_CONF, {
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'hook_contexts': [HAProxyContext()],
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'services': ['ceilometer-api'],
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}),
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(HAPROXY_CONF, {
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'hook_contexts': [context.HAProxyContext(singlenode_mode=True),
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HAProxyContext()],
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'services': ['haproxy'],
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}),
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(HTTPS_APACHE_CONF, {
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'hook_contexts': [ApacheSSLContext()],
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# Include ceilometer-api to fix Bug #1632287 This is a temporary
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# tactival fix as the charm will be rewritten to use mod_wsgi next
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# cycle
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'services': ['ceilometer-api', 'apache2'],
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}),
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(HTTPS_APACHE_24_CONF, {
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'hook_contexts': [ApacheSSLContext()],
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'services': ['ceilometer-api', 'apache2'],
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}),
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])
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TEMPLATES = 'templates'
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SHARED_SECRET = "/etc/ceilometer/secret.txt"
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VERSION_PACKAGE = 'ceilometer-common'
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def register_configs():
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"""
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Register config files with their respective contexts.
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Regstration of some configs may not be required depending on
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existing of certain relations.
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"""
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# if called without anything installed (eg during install hook)
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# just default to earliest supported release. configs dont get touched
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# till post-install, anyway.
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release = get_os_codename_package('ceilometer-common', fatal=False) \
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or 'grizzly'
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configs = templating.OSConfigRenderer(templates_dir=TEMPLATES,
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openstack_release=release)
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for conf in (CEILOMETER_CONF, HAPROXY_CONF):
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configs.register(conf, CONFIG_FILES[conf]['hook_contexts'])
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if init_is_systemd():
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configs.register(
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CEILOMETER_API_SYSTEMD_CONF,
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CONFIG_FILES[CEILOMETER_API_SYSTEMD_CONF]['hook_contexts']
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)
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if os.path.exists('/etc/apache2/conf-available'):
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configs.register(HTTPS_APACHE_24_CONF,
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CONFIG_FILES[HTTPS_APACHE_24_CONF]['hook_contexts'])
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else:
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configs.register(HTTPS_APACHE_CONF,
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CONFIG_FILES[HTTPS_APACHE_CONF]['hook_contexts'])
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if enable_memcache(release=release):
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configs.register(MEMCACHED_CONF, [context.MemcacheContext()])
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return configs
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def restart_map():
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"""
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Determine the correct resource map to be passed to
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charmhelpers.core.restart_on_change() based on the services configured.
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:returns: dict: A dictionary mapping config file to lists of services
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that should be restarted when file changes.
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"""
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_map = {}
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for f, ctxt in CONFIG_FILES.iteritems():
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svcs = []
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for svc in ctxt['services']:
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svcs.append(svc)
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if f == CEILOMETER_CONF:
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for svc in ceilometer_release_services():
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svcs.append(svc)
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if svcs:
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_map[f] = svcs
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if enable_memcache(source=config('openstack-origin')):
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_map[MEMCACHED_CONF] = ['memcached']
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return _map
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def services():
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""" Returns a list of services associate with this charm """
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_services = []
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for v in restart_map().values():
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_services = _services + v
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return list(set(_services))
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def determine_ports():
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"""Assemble a list of API ports for services the charm is managing
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@returns [ports] - list of ports that the charm manages.
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"""
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# TODO(ajkavanagh) - determine what other ports the service listens on
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# apart from the main CEILOMETER port
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ports = [CEILOMETER_PORT]
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return ports
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def get_ceilometer_context():
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""" Retrieve a map of all current relation data for agent configuration """
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ctxt = {}
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for hcontext in CONFIG_FILES[CEILOMETER_CONF]['hook_contexts']:
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ctxt.update(hcontext())
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return ctxt
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def do_openstack_upgrade(configs):
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"""
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Perform an upgrade. Takes care of upgrading packages, rewriting
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configs, database migrations and potentially any other post-upgrade
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actions.
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:param configs: The charms main OSConfigRenderer object.
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"""
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new_src = config('openstack-origin')
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new_os_rel = get_os_codename_install_source(new_src)
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log('Performing OpenStack upgrade to %s.' % (new_os_rel))
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configure_installation_source(new_src)
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dpkg_opts = [
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'--option', 'Dpkg::Options::=--force-confnew',
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'--option', 'Dpkg::Options::=--force-confdef',
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]
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apt_update(fatal=True)
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apt_upgrade(options=dpkg_opts, fatal=True, dist=True)
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apt_install(packages=get_packages(),
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options=dpkg_opts,
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fatal=True)
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# set CONFIGS to load templates from new release
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configs.set_release(openstack_release=new_os_rel)
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def ceilometer_release_services():
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codename = get_os_codename_install_source(config('openstack-origin'))
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if codename >= 'mitaka':
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return MITAKA_SERVICES
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elif codename >= 'icehouse':
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return ICEHOUSE_SERVICES
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else:
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return []
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def ceilometer_release_packages():
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codename = get_os_codename_install_source(config('openstack-origin'))
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if codename >= 'mitaka':
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return MITAKA_PACKAGES
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elif codename >= 'icehouse':
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return ICEHOUSE_PACKAGES
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else:
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return []
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def get_packages():
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packages = (deepcopy(CEILOMETER_BASE_PACKAGES) +
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ceilometer_release_packages())
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packages.extend(token_cache_pkgs(source=config('openstack-origin')))
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return packages
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def get_shared_secret():
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"""
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Returns the current shared secret for the ceilometer node. If the shared
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secret does not exist, this method will generate one.
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"""
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secret = None
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if not os.path.exists(SHARED_SECRET):
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secret = str(uuid.uuid4())
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set_shared_secret(secret)
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else:
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with open(SHARED_SECRET, 'r') as secret_file:
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secret = secret_file.read().strip()
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return secret
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def set_shared_secret(secret):
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"""
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Sets the shared secret which is used to sign ceilometer messages.
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:param secret: the secret to set
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"""
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with open(SHARED_SECRET, 'w') as secret_file:
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secret_file.write(secret)
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def assess_status(configs):
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"""Assess status of current unit
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Decides what the state of the unit should be based on the current
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configuration.
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SIDE EFFECT: calls set_os_workload_status(...) which sets the workload
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status of the unit.
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Also calls status_set(...) directly if paused state isn't complete.
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@param configs: a templating.OSConfigRenderer() object
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@returns None - this function is executed for its side-effect
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"""
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assess_status_func(configs)()
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os_application_version_set(VERSION_PACKAGE)
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def assess_status_func(configs):
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"""Helper function to create the function that will assess_status() for
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the unit.
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Uses charmhelpers.contrib.openstack.utils.make_assess_status_func() to
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create the appropriate status function and then returns it.
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Used directly by assess_status() and also for pausing and resuming
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the unit.
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@param configs: a templating.OSConfigRenderer() object
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@return f() -> None : a function that assesses the unit's workload status
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"""
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return make_assess_status_func(
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configs, REQUIRED_INTERFACES,
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services=services(), ports=determine_ports())
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def pause_unit_helper(configs):
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"""Helper function to pause a unit, and then call assess_status(...) in
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effect, so that the status is correctly updated.
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Uses charmhelpers.contrib.openstack.utils.pause_unit() to do the work.
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@param configs: a templating.OSConfigRenderer() object
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@returns None - this function is executed for its side-effect
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"""
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_pause_resume_helper(pause_unit, configs)
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def resume_unit_helper(configs):
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"""Helper function to resume a unit, and then call assess_status(...) in
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effect, so that the status is correctly updated.
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Uses charmhelpers.contrib.openstack.utils.resume_unit() to do the work.
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@param configs: a templating.OSConfigRenderer() object
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@returns None - this function is executed for its side-effect
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"""
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_pause_resume_helper(resume_unit, configs)
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def _pause_resume_helper(f, configs):
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"""Helper function that uses the make_assess_status_func(...) from
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charmhelpers.contrib.openstack.utils to create an assess_status(...)
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function that can be used with the pause/resume of the unit
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@param f: the function to be used with the assess_status(...) function
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@returns None - this function is executed for its side-effect
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"""
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# TODO(ajkavanagh) - ports= has been left off because of the race hazard
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# that exists due to service_start()
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f(assess_status_func(configs),
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services=services(),
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ports=determine_ports())
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# NOTE(jamespage): Drop once charm switches to apache+mod_wsgi.
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def reload_systemd():
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"""Reload systemd configuration on systemd based installs
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"""
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if init_is_systemd():
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subprocess.check_call(['systemctl', 'daemon-reload'])
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