790 lines
26 KiB
Python
790 lines
26 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 re
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import pwd
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import subprocess
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import platform
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from itertools import chain
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from base64 import b64decode
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from copy import deepcopy
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from subprocess import (
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check_call,
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check_output,
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CalledProcessError
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)
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from charmhelpers.fetch import (
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apt_update,
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apt_upgrade,
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apt_install,
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)
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from charmhelpers.core.fstab import Fstab
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from charmhelpers.core.host import (
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mkdir,
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service_restart,
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lsb_release,
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rsync,
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CompareHostReleases,
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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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related_units,
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relation_ids,
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relation_get,
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status_set,
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DEBUG,
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INFO,
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WARNING,
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)
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from charmhelpers.core.decorators import retry_on_exception
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from charmhelpers.contrib.openstack import templating, context
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from charmhelpers.contrib.openstack.alternatives import install_alternative
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from charmhelpers.contrib.openstack.utils import (
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configure_installation_source,
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get_os_codename_install_source,
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os_release,
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reset_os_release,
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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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CompareOpenStackReleases,
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)
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from charmhelpers.core.hugepage import hugepage_support
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from nova_compute_context import (
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nova_metadata_requirement,
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CloudComputeContext,
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LxdContext,
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MetadataServiceContext,
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NovaComputeLibvirtContext,
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NovaComputeLibvirtOverrideContext,
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NovaComputeCephContext,
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NeutronComputeContext,
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InstanceConsoleContext,
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CEPH_CONF,
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ceph_config_file,
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HostIPContext,
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NovaComputeVirtContext,
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NOVA_API_AA_PROFILE,
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NOVA_COMPUTE_AA_PROFILE,
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NOVA_NETWORK_AA_PROFILE,
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NovaAPIAppArmorContext,
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NovaComputeAppArmorContext,
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NovaNetworkAppArmorContext,
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SerialConsoleContext,
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NovaComputeAvailabilityZoneContext,
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)
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CA_CERT_PATH = '/usr/local/share/ca-certificates/keystone_juju_ca_cert.crt'
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TEMPLATES = 'templates/'
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BASE_PACKAGES = [
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'nova-compute',
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'genisoimage', # was missing as a package dependency until raring.
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'librbd1', # bug 1440953
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'python-six',
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'python-psutil',
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]
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VERSION_PACKAGE = 'nova-common'
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DEFAULT_INSTANCE_PATH = '/var/lib/nova/instances'
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NOVA_CONF_DIR = "/etc/nova"
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QEMU_CONF = '/etc/libvirt/qemu.conf'
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LIBVIRTD_CONF = '/etc/libvirt/libvirtd.conf'
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LIBVIRT_BIN = '/etc/default/libvirt-bin'
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LIBVIRT_BIN_OVERRIDES = '/etc/init/libvirt-bin.override'
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NOVA_CONF = '%s/nova.conf' % NOVA_CONF_DIR
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QEMU_KVM = '/etc/default/qemu-kvm'
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NOVA_API_AA_PROFILE_PATH = ('/etc/apparmor.d/{}'.format(NOVA_API_AA_PROFILE))
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NOVA_COMPUTE_AA_PROFILE_PATH = ('/etc/apparmor.d/{}'
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''.format(NOVA_COMPUTE_AA_PROFILE))
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NOVA_NETWORK_AA_PROFILE_PATH = ('/etc/apparmor.d/{}'
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''.format(NOVA_NETWORK_AA_PROFILE))
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LIBVIRT_TYPES = ['kvm', 'qemu', 'lxc']
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BASE_RESOURCE_MAP = {
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NOVA_CONF: {
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'services': ['nova-compute'],
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'contexts': [context.AMQPContext(ssl_dir=NOVA_CONF_DIR),
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context.SharedDBContext(
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relation_prefix='nova', ssl_dir=NOVA_CONF_DIR),
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context.ImageServiceContext(),
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context.OSConfigFlagContext(),
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CloudComputeContext(),
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LxdContext(),
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NovaComputeLibvirtContext(),
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NovaComputeCephContext(),
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context.SyslogContext(),
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context.SubordinateConfigContext(
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interface=['neutron-plugin', 'nova-ceilometer',
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'ephemeral-backend'],
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service=['nova-compute', 'nova'],
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config_file=NOVA_CONF),
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InstanceConsoleContext(),
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context.ZeroMQContext(),
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context.NotificationDriverContext(),
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MetadataServiceContext(),
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HostIPContext(),
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NovaComputeVirtContext(),
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context.LogLevelContext(),
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context.InternalEndpointContext(),
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context.VolumeAPIContext('nova-common'),
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SerialConsoleContext(),
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NovaComputeAvailabilityZoneContext(),
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context.WorkerConfigContext()],
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},
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NOVA_API_AA_PROFILE_PATH: {
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'services': ['nova-api'],
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'contexts': [NovaAPIAppArmorContext()],
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},
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NOVA_COMPUTE_AA_PROFILE_PATH: {
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'services': ['nova-compute'],
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'contexts': [NovaComputeAppArmorContext()],
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},
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NOVA_NETWORK_AA_PROFILE_PATH: {
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'services': ['nova-network'],
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'contexts': [NovaNetworkAppArmorContext()],
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},
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}
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LIBVIRTD_DAEMON = 'libvirtd'
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LIBVIRT_BIN_DAEMON = 'libvirt-bin'
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LIBVIRT_RESOURCE_MAP = {
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QEMU_CONF: {
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'services': [LIBVIRT_BIN_DAEMON],
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'contexts': [NovaComputeLibvirtContext()],
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},
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QEMU_KVM: {
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'services': ['qemu-kvm'],
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'contexts': [NovaComputeLibvirtContext()],
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},
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LIBVIRTD_CONF: {
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'services': [LIBVIRT_BIN_DAEMON],
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'contexts': [NovaComputeLibvirtContext()],
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},
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LIBVIRT_BIN: {
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'services': [LIBVIRT_BIN_DAEMON],
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'contexts': [NovaComputeLibvirtContext()],
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},
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LIBVIRT_BIN_OVERRIDES: {
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'services': [LIBVIRT_BIN_DAEMON],
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'contexts': [NovaComputeLibvirtOverrideContext()],
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},
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}
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LIBVIRT_RESOURCE_MAP.update(BASE_RESOURCE_MAP)
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CEPH_SECRET = '/etc/ceph/secret.xml'
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CEPH_BACKEND_SECRET = '/etc/ceph/secret-{}.xml'
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CEPH_RESOURCES = {
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CEPH_SECRET: {
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'contexts': [NovaComputeCephContext()],
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'services': [],
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}
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}
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# Maps virt-type config to a compute package(s).
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VIRT_TYPES = {
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'kvm': ['nova-compute-kvm'],
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'qemu': ['nova-compute-qemu'],
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'uml': ['nova-compute-uml'],
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'lxc': ['nova-compute-lxc'],
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'lxd': ['nova-compute-lxd'],
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}
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# Maps virt-type config to a libvirt URI.
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LIBVIRT_URIS = {
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'kvm': 'qemu:///system',
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'qemu': 'qemu:///system',
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'uml': 'uml:///system',
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'lxc': 'lxc:///',
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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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'messaging': ['amqp'],
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'image': ['image-service'],
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}
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def libvirt_daemon():
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'''Resolve the correct name of the libvirt daemon service'''
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distro_codename = lsb_release()['DISTRIB_CODENAME'].lower()
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if (CompareHostReleases(distro_codename) >= 'yakkety' or
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CompareOpenStackReleases(os_release('nova-common')) >= 'ocata'):
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return LIBVIRTD_DAEMON
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else:
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return LIBVIRT_BIN_DAEMON
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def resource_map():
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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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# TODO: Cache this on first call?
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if config('virt-type').lower() == 'lxd':
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resource_map = deepcopy(BASE_RESOURCE_MAP)
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else:
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resource_map = deepcopy(LIBVIRT_RESOURCE_MAP)
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net_manager = network_manager()
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# Network manager gets set late by the cloud-compute interface.
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# FlatDHCPManager only requires some extra packages.
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cmp_os_release = CompareOpenStackReleases(os_release('nova-common'))
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if (net_manager in ['flatmanager', 'flatdhcpmanager'] and
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config('multi-host').lower() == 'yes' and
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cmp_os_release < 'ocata'):
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resource_map[NOVA_CONF]['services'].extend(
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['nova-api', 'nova-network']
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)
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else:
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resource_map.pop(NOVA_API_AA_PROFILE_PATH)
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resource_map.pop(NOVA_NETWORK_AA_PROFILE_PATH)
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cmp_distro_codename = CompareHostReleases(
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lsb_release()['DISTRIB_CODENAME'].lower())
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if (cmp_distro_codename >= 'yakkety' or cmp_os_release >= 'ocata'):
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for data in resource_map.values():
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if LIBVIRT_BIN_DAEMON in data['services']:
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data['services'].remove(LIBVIRT_BIN_DAEMON)
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data['services'].append(LIBVIRTD_DAEMON)
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# Neutron/quantum requires additional contexts, as well as new resources
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# depending on the plugin used.
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# NOTE(james-page): only required for ovs plugin right now
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if net_manager in ['neutron', 'quantum']:
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resource_map[NOVA_CONF]['contexts'].append(NeutronComputeContext())
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if relation_ids('ceph'):
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CEPH_RESOURCES[ceph_config_file()] = {
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'contexts': [NovaComputeCephContext()],
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'services': ['nova-compute']
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}
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resource_map.update(CEPH_RESOURCES)
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enable_nova_metadata, _ = nova_metadata_requirement()
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if enable_nova_metadata:
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resource_map[NOVA_CONF]['services'].append('nova-api-metadata')
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return resource_map
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def restart_map():
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'''
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Constructs a restart map based on charm config settings and relation
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state.
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'''
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return {k: v['services'] for k, v in resource_map().items()}
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def services():
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''' Returns a list of services associated with this charm '''
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return list(set(chain(*restart_map().values())))
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def register_configs():
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'''
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Returns an OSTemplateRenderer object with all required configs registered.
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'''
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release = os_release('nova-common')
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configs = templating.OSConfigRenderer(templates_dir=TEMPLATES,
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openstack_release=release)
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if relation_ids('ceph'):
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# Add charm ceph configuration to resources and
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# ensure directory actually exists
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mkdir(os.path.dirname(ceph_config_file()))
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mkdir(os.path.dirname(CEPH_CONF))
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# Install ceph config as an alternative for co-location with
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# ceph and ceph-osd charms - nova-compute ceph.conf will be
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# lower priority that both of these but thats OK
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if not os.path.exists(ceph_config_file()):
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# touch file for pre-templated generation
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open(ceph_config_file(), 'w').close()
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install_alternative(os.path.basename(CEPH_CONF),
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CEPH_CONF, ceph_config_file())
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for cfg, d in resource_map().items():
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configs.register(cfg, d['contexts'])
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return configs
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def determine_packages_arch():
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'''Generate list of architecture-specific packages'''
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packages = []
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distro_codename = lsb_release()['DISTRIB_CODENAME'].lower()
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if (platform.machine() == 'aarch64' and
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CompareHostReleases(distro_codename) >= 'wily'):
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packages.extend(['qemu-efi']), # AArch64 cloud images require UEFI fw
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return packages
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def determine_packages():
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packages = [] + BASE_PACKAGES
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net_manager = network_manager()
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if (net_manager in ['flatmanager', 'flatdhcpmanager'] and
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config('multi-host').lower() == 'yes' and
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CompareOpenStackReleases(os_release('nova-common')) < 'ocata'):
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packages.extend(['nova-api', 'nova-network'])
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if relation_ids('ceph'):
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packages.append('ceph-common')
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virt_type = config('virt-type')
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try:
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packages.extend(VIRT_TYPES[virt_type])
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except KeyError:
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log('Unsupported virt-type configured: %s' % virt_type)
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raise
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enable_nova_metadata, _ = nova_metadata_requirement()
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if enable_nova_metadata:
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packages.append('nova-api-metadata')
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packages.extend(determine_packages_arch())
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return packages
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def migration_enabled():
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# XXX: confirm juju-core bool behavior is the same.
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return config('enable-live-migration')
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def _network_config():
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'''
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Obtain all relevant network configuration settings from nova-c-c via
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cloud-compute interface.
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'''
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settings = ['network_manager', 'neutron_plugin', 'quantum_plugin']
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net_config = {}
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for rid in relation_ids('cloud-compute'):
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for unit in related_units(rid):
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for setting in settings:
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value = relation_get(setting, rid=rid, unit=unit)
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if value:
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net_config[setting] = value
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return net_config
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def neutron_plugin():
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return (_network_config().get('neutron_plugin') or
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_network_config().get('quantum_plugin'))
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def network_manager():
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'''
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Obtain the network manager advertised by nova-c-c, renaming to Quantum
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if required
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'''
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manager = _network_config().get('network_manager')
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if manager:
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manager = manager.lower()
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if manager != 'neutron':
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return manager
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else:
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return 'neutron'
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return manager
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def public_ssh_key(user='root'):
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home = pwd.getpwnam(user).pw_dir
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try:
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with open(os.path.join(home, '.ssh', 'id_rsa.pub')) as key:
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return key.read().strip()
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except:
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return None
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def initialize_ssh_keys(user='root'):
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home_dir = pwd.getpwnam(user).pw_dir
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ssh_dir = os.path.join(home_dir, '.ssh')
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if not os.path.isdir(ssh_dir):
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os.mkdir(ssh_dir)
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priv_key = os.path.join(ssh_dir, 'id_rsa')
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if not os.path.isfile(priv_key):
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log('Generating new ssh key for user %s.' % user)
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cmd = ['ssh-keygen', '-q', '-N', '', '-t', 'rsa', '-b', '2048',
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'-f', priv_key]
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check_output(cmd)
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pub_key = '%s.pub' % priv_key
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if not os.path.isfile(pub_key):
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log('Generating missing ssh public key @ %s.' % pub_key)
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cmd = ['ssh-keygen', '-y', '-f', priv_key]
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p = check_output(cmd).decode('UTF-8').strip()
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with open(pub_key, 'wt') as out:
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out.write(p)
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check_output(['chown', '-R', user, ssh_dir])
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def set_ppc64_cpu_smt_state(smt_state):
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"""Set ppc64_cpu smt state."""
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current_smt_state = check_output(['ppc64_cpu', '--smt']).decode('UTF-8')
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# Possible smt state values are integer or 'off'
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# Ex. common ppc64_cpu query command output values:
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# SMT=8
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# -or-
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# SMT is off
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if 'SMT={}'.format(smt_state) in current_smt_state:
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log('Not changing ppc64_cpu smt state ({})'.format(smt_state))
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elif smt_state == 'off' and 'SMT is off' in current_smt_state:
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log('Not changing ppc64_cpu smt state (already off)')
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else:
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log('Setting ppc64_cpu smt state: {}'.format(smt_state))
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cmd = ['ppc64_cpu', '--smt={}'.format(smt_state)]
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try:
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check_output(cmd)
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except CalledProcessError as e:
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# Known to fail in a container (host must pre-configure smt)
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msg = 'Failed to set ppc64_cpu smt state: {}'.format(smt_state)
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log(msg, level=WARNING)
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status_set('blocked', msg)
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raise e
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def import_authorized_keys(user='root', prefix=None):
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"""Import SSH authorized_keys + known_hosts from a cloud-compute relation.
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Store known_hosts in user's $HOME/.ssh and authorized_keys in a path
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specified using authorized-keys-path config option.
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"""
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known_hosts = []
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authorized_keys = []
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if prefix:
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known_hosts_index = relation_get(
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'{}_known_hosts_max_index'.format(prefix))
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if known_hosts_index:
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for index in range(0, int(known_hosts_index)):
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known_hosts.append(relation_get(
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'{}_known_hosts_{}'.format(prefix, index)))
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authorized_keys_index = relation_get(
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'{}_authorized_keys_max_index'.format(prefix))
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if authorized_keys_index:
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for index in range(0, int(authorized_keys_index)):
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authorized_keys.append(relation_get(
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'{}_authorized_keys_{}'.format(prefix, index)))
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else:
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# XXX: Should this be managed via templates + contexts?
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known_hosts_index = relation_get('known_hosts_max_index')
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if known_hosts_index:
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for index in range(0, int(known_hosts_index)):
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known_hosts.append(relation_get(
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'known_hosts_{}'.format(index)))
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authorized_keys_index = relation_get('authorized_keys_max_index')
|
|
if authorized_keys_index:
|
|
for index in range(0, int(authorized_keys_index)):
|
|
authorized_keys.append(relation_get(
|
|
'authorized_keys_{}'.format(index)))
|
|
|
|
# XXX: Should partial return of known_hosts or authorized_keys
|
|
# be allowed ?
|
|
if not len(known_hosts) or not len(authorized_keys):
|
|
return
|
|
homedir = pwd.getpwnam(user).pw_dir
|
|
dest_auth_keys = config('authorized-keys-path').format(
|
|
homedir=homedir, username=user)
|
|
dest_known_hosts = os.path.join(homedir, '.ssh/known_hosts')
|
|
log('Saving new known_hosts file to %s and authorized_keys file to: %s.' %
|
|
(dest_known_hosts, dest_auth_keys))
|
|
|
|
with open(dest_known_hosts, 'wt') as _hosts:
|
|
for index in range(0, int(known_hosts_index)):
|
|
_hosts.write('{}\n'.format(known_hosts[index]))
|
|
with open(dest_auth_keys, 'wt') as _keys:
|
|
for index in range(0, int(authorized_keys_index)):
|
|
_keys.write('{}\n'.format(authorized_keys[index]))
|
|
|
|
|
|
def do_openstack_upgrade(configs):
|
|
# NOTE(jamespage) horrible hack to make utils forget a cached value
|
|
import charmhelpers.contrib.openstack.utils as utils
|
|
utils.os_rel = None
|
|
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)
|
|
apt_update(fatal=True)
|
|
|
|
dpkg_opts = [
|
|
'--option', 'Dpkg::Options::=--force-confnew',
|
|
'--option', 'Dpkg::Options::=--force-confdef',
|
|
]
|
|
|
|
apt_upgrade(options=dpkg_opts, fatal=True, dist=True)
|
|
reset_os_release()
|
|
apt_install(determine_packages(), fatal=True)
|
|
|
|
configs.set_release(openstack_release=new_os_rel)
|
|
configs.write_all()
|
|
if not is_unit_paused_set():
|
|
for s in services():
|
|
service_restart(s)
|
|
|
|
|
|
def import_keystone_ca_cert():
|
|
"""If provided, improt the Keystone CA cert that gets forwarded
|
|
to compute nodes via the cloud-compute interface
|
|
"""
|
|
ca_cert = relation_get('ca_cert')
|
|
if not ca_cert:
|
|
return
|
|
log('Writing Keystone CA certificate to %s' % CA_CERT_PATH)
|
|
with open(CA_CERT_PATH, 'wb') as out:
|
|
out.write(b64decode(ca_cert))
|
|
check_call(['update-ca-certificates'])
|
|
|
|
|
|
def create_libvirt_secret(secret_file, secret_uuid, key):
|
|
uri = LIBVIRT_URIS[config('virt-type')]
|
|
cmd = ['virsh', '-c', uri, 'secret-list']
|
|
if secret_uuid in check_output(cmd).decode('UTF-8'):
|
|
old_key = check_output(['virsh', '-c', uri, 'secret-get-value',
|
|
secret_uuid]).decode('UTF-8')
|
|
old_key = old_key.strip()
|
|
if old_key == key:
|
|
log('Libvirt secret already exists for uuid %s.' % secret_uuid,
|
|
level=DEBUG)
|
|
return
|
|
else:
|
|
log('Libvirt secret changed for uuid %s.' % secret_uuid,
|
|
level=INFO)
|
|
log('Defining new libvirt secret for uuid %s.' % secret_uuid)
|
|
cmd = ['virsh', '-c', uri, 'secret-define', '--file', secret_file]
|
|
check_call(cmd)
|
|
cmd = ['virsh', '-c', uri, 'secret-set-value', '--secret', secret_uuid,
|
|
'--base64', key]
|
|
check_call(cmd)
|
|
|
|
|
|
def destroy_libvirt_network(netname):
|
|
"""Delete a network using virsh net-destroy"""
|
|
try:
|
|
out = check_output(['virsh', 'net-list']).decode('UTF-8').splitlines()
|
|
if len(out) < 3:
|
|
return
|
|
|
|
for line in out[2:]:
|
|
res = re.search("^\s+{} ".format(netname), line)
|
|
if res:
|
|
check_call(['virsh', 'net-destroy', netname])
|
|
return
|
|
|
|
except CalledProcessError:
|
|
log("Failed to destroy libvirt network '{}'".format(netname),
|
|
level=WARNING)
|
|
except OSError as e:
|
|
if e.errno == 2:
|
|
log("virsh is unavailable. Virt Type is '{}'. Not attempting to "
|
|
"destroy libvirt network '{}'"
|
|
"".format(config('virt-type'), netname), level=DEBUG)
|
|
else:
|
|
raise e
|
|
|
|
|
|
def configure_lxd(user='nova'):
|
|
''' Configure lxd use for nova user '''
|
|
_release = lsb_release()['DISTRIB_CODENAME'].lower()
|
|
if CompareHostReleases(_release) < "vivid":
|
|
raise Exception("LXD is not supported for Ubuntu "
|
|
"versions less than 15.04 (vivid)")
|
|
|
|
configure_subuid(user)
|
|
lxc_list(user)
|
|
|
|
|
|
@retry_on_exception(5, base_delay=2, exc_type=CalledProcessError)
|
|
def lxc_list(user):
|
|
cmd = ['sudo', '-u', user, 'lxc', 'list']
|
|
check_call(cmd)
|
|
|
|
|
|
def configure_subuid(user):
|
|
cmd = ['usermod', '-v', '100000-200000', '-w', '100000-200000', user]
|
|
check_call(cmd)
|
|
|
|
|
|
def enable_shell(user):
|
|
cmd = ['usermod', '-s', '/bin/bash', user]
|
|
check_call(cmd)
|
|
|
|
|
|
def disable_shell(user):
|
|
cmd = ['usermod', '-s', '/bin/false', user]
|
|
check_call(cmd)
|
|
|
|
|
|
def fix_path_ownership(path, user='nova'):
|
|
cmd = ['chown', user, path]
|
|
check_call(cmd)
|
|
|
|
|
|
def assert_charm_supports_ipv6():
|
|
"""Check whether we are able to support charms ipv6."""
|
|
_release = lsb_release()['DISTRIB_CODENAME'].lower()
|
|
if CompareHostReleases(_release) < "trusty":
|
|
raise Exception("IPv6 is not supported in the charms for Ubuntu "
|
|
"versions less than Trusty 14.04")
|
|
|
|
|
|
def get_hugepage_number():
|
|
# TODO: defaults to 2M - this should probably be configurable
|
|
# and support multiple pool sizes - e.g. 2M and 1G.
|
|
# NOTE(jamespage): 2M in bytes
|
|
hugepage_size = 2048 * 1024
|
|
hugepage_config = config('hugepages')
|
|
hugepages = None
|
|
if hugepage_config:
|
|
if hugepage_config.endswith('%'):
|
|
# NOTE(jamespage): return units of virtual_memory is
|
|
# bytes
|
|
import psutil
|
|
mem = psutil.virtual_memory()
|
|
hugepage_config_pct = hugepage_config.strip('%')
|
|
hugepage_multiplier = float(hugepage_config_pct) / 100
|
|
hugepages = int((mem.total * hugepage_multiplier) / hugepage_size)
|
|
else:
|
|
hugepages = int(hugepage_config)
|
|
return hugepages
|
|
|
|
|
|
def install_hugepages():
|
|
""" Configure hugepages """
|
|
hugepage_config = config('hugepages')
|
|
if hugepage_config:
|
|
mnt_point = '/run/hugepages/kvm'
|
|
hugepage_support(
|
|
'nova',
|
|
mnt_point=mnt_point,
|
|
group='root',
|
|
nr_hugepages=get_hugepage_number(),
|
|
mount=False,
|
|
set_shmmax=True,
|
|
)
|
|
# Remove hugepages entry if present due to Bug #1518771
|
|
Fstab.remove_by_mountpoint(mnt_point)
|
|
if subprocess.call(['mountpoint', mnt_point]):
|
|
service_restart('qemu-kvm')
|
|
rsync(
|
|
charm_dir() + '/files/qemu-hugefsdir',
|
|
'/etc/init.d/qemu-hugefsdir'
|
|
)
|
|
subprocess.check_call('/etc/init.d/qemu-hugefsdir')
|
|
subprocess.check_call(['update-rc.d', 'qemu-hugefsdir', 'defaults'])
|
|
|
|
|
|
def get_optional_relations():
|
|
"""Return a dictionary of optional relations.
|
|
|
|
@returns {relation: relation_name}
|
|
"""
|
|
optional_interfaces = {}
|
|
if relation_ids('ceph'):
|
|
optional_interfaces['storage-backend'] = ['ceph']
|
|
if relation_ids('neutron-plugin'):
|
|
optional_interfaces['neutron-plugin'] = ['neutron-plugin']
|
|
if relation_ids('shared-db'):
|
|
optional_interfaces['database'] = ['shared-db']
|
|
return optional_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(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_relations())
|
|
return make_assess_status_func(
|
|
configs, required_interfaces,
|
|
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)
|