687 lines
23 KiB
Python
687 lines
23 KiB
Python
#!/usr/bin/python
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#
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# 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 shutil
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import subprocess
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from itertools import chain
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import glance_contexts
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from collections import OrderedDict
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from charmhelpers.fetch import (
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apt_upgrade,
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apt_update,
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apt_install,
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add_source)
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from charmhelpers.contrib.python.packages import (
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pip_install,
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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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relation_ids,
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service_name,
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)
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from charmhelpers.core.host import (
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adduser,
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add_group,
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add_user_to_group,
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CompareHostReleases,
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lsb_release,
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mkdir,
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pwgen,
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service_stop,
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service_start,
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service_restart,
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write_file,
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)
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from charmhelpers.contrib.openstack import (
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templating,
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context,)
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from charmhelpers.contrib.hahelpers.cluster import (
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is_elected_leader,
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get_hacluster_config,
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)
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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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CompareOpenStackReleases,
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configure_installation_source,
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enable_memcache,
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incomplete_relation_data,
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is_unit_paused_set,
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get_os_codename_install_source,
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git_clone_and_install,
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git_default_repos,
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git_generate_systemd_init_files,
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git_install_requested,
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git_pip_venv_dir,
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git_src_dir,
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git_yaml_value,
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make_assess_status_func,
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os_application_version_set,
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os_release,
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reset_os_release,
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pause_unit,
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resume_unit,
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token_cache_pkgs,
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)
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from charmhelpers.core.templating import render
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from charmhelpers.core.decorators import (
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retry_on_exception,
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)
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from charmhelpers.core.unitdata import kv
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CLUSTER_RES = "grp_glance_vips"
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PACKAGES = [
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"apache2", "glance", "python-mysqldb", "python-swiftclient",
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"python-psycopg2", "python-keystone", "python-six", "uuid", "haproxy", ]
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VERSION_PACKAGE = 'glance-common'
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BASE_GIT_PACKAGES = [
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'libffi-dev',
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'libmysqlclient-dev',
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'libxml2-dev',
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'libxslt1-dev',
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'libssl-dev',
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'libyaml-dev',
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'openstack-pkg-tools',
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'python-dev',
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'python-pip',
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'python-setuptools',
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'zlib1g-dev',
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]
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SERVICES = [
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"glance-api",
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"glance-registry",
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]
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# ubuntu packages that should not be installed when deploying from git
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GIT_PACKAGE_BLACKLIST = [
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'glance',
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'python-swiftclient',
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'python-keystone',
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]
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CHARM = "glance"
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GLANCE_CONF_DIR = "/etc/glance"
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GLANCE_REGISTRY_CONF = "%s/glance-registry.conf" % GLANCE_CONF_DIR
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GLANCE_API_CONF = "%s/glance-api.conf" % GLANCE_CONF_DIR
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GLANCE_REGISTRY_PASTE = os.path.join(GLANCE_CONF_DIR,
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'glance-registry-paste.ini')
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GLANCE_API_PASTE = os.path.join(GLANCE_CONF_DIR,
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'glance-api-paste.ini')
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CEPH_CONF = "/etc/ceph/ceph.conf"
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CHARM_CEPH_CONF = '/var/lib/charm/{}/ceph.conf'
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HAPROXY_CONF = "/etc/haproxy/haproxy.cfg"
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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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MEMCACHED_CONF = '/etc/memcached.conf'
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TEMPLATES = 'templates/'
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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', 'pgsql-db'],
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'identity': ['identity-service'],
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}
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def ceph_config_file():
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return CHARM_CEPH_CONF.format(service_name())
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CONFIG_FILES = OrderedDict([
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(GLANCE_REGISTRY_CONF, {
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'hook_contexts': [context.SharedDBContext(ssl_dir=GLANCE_CONF_DIR),
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context.PostgresqlDBContext(),
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context.IdentityServiceContext(
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service='glance',
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service_user='glance'),
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context.SyslogContext(),
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glance_contexts.LoggingConfigContext(),
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glance_contexts.GlanceIPv6Context(),
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context.WorkerConfigContext(),
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context.OSConfigFlagContext(
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charm_flag='registry-config-flags',
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template_flag='registry_config_flags'),
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context.MemcacheContext()],
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'services': ['glance-registry']
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}),
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(GLANCE_API_CONF, {
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'hook_contexts': [context.SharedDBContext(ssl_dir=GLANCE_CONF_DIR),
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context.AMQPContext(ssl_dir=GLANCE_CONF_DIR),
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context.PostgresqlDBContext(),
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context.IdentityServiceContext(
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service='glance',
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service_user='glance'),
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glance_contexts.GlanceContext(),
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glance_contexts.CephGlanceContext(),
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glance_contexts.ObjectStoreContext(),
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glance_contexts.CinderStoreContext(),
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glance_contexts.HAProxyContext(),
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context.SyslogContext(),
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glance_contexts.LoggingConfigContext(),
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glance_contexts.GlanceIPv6Context(),
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context.WorkerConfigContext(),
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glance_contexts.MultiStoreContext(),
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context.OSConfigFlagContext(
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charm_flag='api-config-flags',
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template_flag='api_config_flags'),
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context.InternalEndpointContext(),
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context.SubordinateConfigContext(
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interface=['storage-backend'],
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service=['glance-api'],
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config_file=GLANCE_API_CONF),
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context.MemcacheContext()],
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'services': ['glance-api']
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}),
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(ceph_config_file(), {
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'hook_contexts': [context.CephContext()],
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'services': ['glance-api', 'glance-registry']
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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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glance_contexts.HAProxyContext()],
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'services': ['haproxy'],
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}),
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(HTTPS_APACHE_CONF, {
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'hook_contexts': [glance_contexts.ApacheSSLContext()],
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'services': ['apache2'],
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}),
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(HTTPS_APACHE_24_CONF, {
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'hook_contexts': [glance_contexts.ApacheSSLContext()],
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'services': ['apache2'],
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})
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])
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def register_configs():
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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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release = os_release('glance-common')
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configs = templating.OSConfigRenderer(templates_dir=TEMPLATES,
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openstack_release=release)
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confs = [GLANCE_REGISTRY_CONF,
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GLANCE_API_CONF,
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HAPROXY_CONF]
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if relation_ids('ceph'):
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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 - glance 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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confs.append(ceph_config_file())
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for conf in confs:
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configs.register(conf, CONFIG_FILES[conf]['hook_contexts'])
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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 determine_packages():
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packages = set(PACKAGES)
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if git_install_requested():
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packages |= set(BASE_GIT_PACKAGES)
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packages -= set(GIT_PACKAGE_BLACKLIST)
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packages |= set(token_cache_pkgs(source=config('openstack-origin')))
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return sorted(packages)
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# NOTE(jamespage): Retry deals with sync issues during one-shot HA deploys.
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# mysql might be restarting or suchlike.
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@retry_on_exception(5, base_delay=3, exc_type=subprocess.CalledProcessError)
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def migrate_database():
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'''Runs glance-manage to initialize a new database
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or migrate existing
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'''
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cmd = ['glance-manage', 'db_sync']
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subprocess.check_call(cmd)
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def do_openstack_upgrade(configs):
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"""Perform an upgrade of glance. Takes care of upgrading
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packages, rewriting configs + database migration and potentially
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any other post-upgrade 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()
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apt_upgrade(options=dpkg_opts, fatal=True, dist=True)
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reset_os_release()
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apt_install(determine_packages(), fatal=True)
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# set CONFIGS to load templates from new release and regenerate config
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configs.set_release(openstack_release=new_os_rel)
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configs.write_all()
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[service_stop(s) for s in services()]
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if is_elected_leader(CLUSTER_RES):
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migrate_database()
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# Don't start services if the unit is supposed to be paused.
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if not is_unit_paused_set():
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[service_start(s) for s in services()]
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def restart_map():
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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 svcs:
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_map.append((f, svcs))
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if enable_memcache(source=config('openstack-origin')):
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_map.append((MEMCACHED_CONF, ['memcached']))
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return OrderedDict(_map)
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def services():
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''' Returns a list of (unique) services associate with this charm '''
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return list(set(chain(*restart_map().values())))
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def setup_ipv6():
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ubuntu_rel = lsb_release()['DISTRIB_CODENAME'].lower()
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if CompareHostReleases(ubuntu_rel) < "trusty":
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raise Exception("IPv6 is not supported in the charms for Ubuntu "
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"versions less than Trusty 14.04")
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# Need haproxy >= 1.5.3 for ipv6 so for Trusty if we are <= Kilo we need to
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# use trusty-backports otherwise we can use the UCA.
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if (ubuntu_rel == 'trusty' and
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CompareOpenStackReleases(os_release('glance')) < 'liberty'):
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add_source('deb http://archive.ubuntu.com/ubuntu trusty-backports '
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'main')
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apt_update()
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apt_install('haproxy/trusty-backports', fatal=True)
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def git_install(projects_yaml):
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"""Perform setup, and install git repos specified in yaml parameter."""
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if git_install_requested():
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git_pre_install()
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projects_yaml = git_default_repos(projects_yaml)
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git_clone_and_install(projects_yaml, core_project='glance')
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git_post_install(projects_yaml)
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def git_pre_install():
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"""Perform glance pre-install setup."""
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dirs = [
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'/var/lib/glance',
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'/var/lib/glance/images',
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'/var/lib/glance/image-cache',
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'/var/lib/glance/image-cache/incomplete',
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'/var/lib/glance/image-cache/invalid',
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'/var/lib/glance/image-cache/queue',
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'/var/log/glance',
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]
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logs = [
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'/var/log/glance/glance-api.log',
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'/var/log/glance/glance-registry.log',
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]
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adduser('glance', shell='/bin/bash', system_user=True)
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add_group('glance', system_group=True)
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add_user_to_group('glance', 'glance')
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for d in dirs:
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mkdir(d, owner='glance', group='glance', perms=0755, force=False)
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for l in logs:
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write_file(l, '', owner='glance', group='glance', perms=0600)
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def git_post_install(projects_yaml):
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"""Perform glance post-install setup."""
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http_proxy = git_yaml_value(projects_yaml, 'http_proxy')
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if http_proxy:
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for pkg in ['mysql-python', 'python-cephlibs']:
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pip_install(pkg, proxy=http_proxy,
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venv=git_pip_venv_dir(projects_yaml))
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else:
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for pkg in ['mysql-python', 'python-cephlibs']:
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pip_install(pkg, venv=git_pip_venv_dir(projects_yaml))
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src_etc = os.path.join(git_src_dir(projects_yaml, 'glance'), 'etc')
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configs = {
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'src': src_etc,
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'dest': GLANCE_CONF_DIR,
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}
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if os.path.exists(configs['dest']):
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shutil.rmtree(configs['dest'])
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shutil.copytree(configs['src'], configs['dest'])
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symlinks = [
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# NOTE(coreycb): Need to find better solution than bin symlinks.
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{'src': os.path.join(git_pip_venv_dir(projects_yaml),
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'bin/glance-manage'),
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'link': '/usr/local/bin/glance-manage'},
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]
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for s in symlinks:
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if os.path.lexists(s['link']):
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os.remove(s['link'])
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os.symlink(s['src'], s['link'])
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bin_dir = os.path.join(git_pip_venv_dir(projects_yaml), 'bin')
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# Use systemd init units/scripts from ubuntu wily onward
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if lsb_release()['DISTRIB_RELEASE'] >= '15.10':
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templates_dir = os.path.join(charm_dir(), TEMPLATES, 'git')
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daemons = ['glance-api', 'glance-glare', 'glance-registry']
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for daemon in daemons:
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glance_context = {
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'daemon_path': os.path.join(bin_dir, daemon),
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}
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template_file = 'git/{}.init.in.template'.format(daemon)
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init_in_file = '{}.init.in'.format(daemon)
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render(template_file, os.path.join(templates_dir, init_in_file),
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glance_context, perms=0o644)
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git_generate_systemd_init_files(templates_dir)
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else:
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glance_api_context = {
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'service_description': 'Glance API server',
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'service_name': 'Glance',
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'user_name': 'glance',
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'start_dir': '/var/lib/glance',
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'process_name': 'glance-api',
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'executable_name': os.path.join(bin_dir, 'glance-api'),
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'config_files': [GLANCE_API_CONF],
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'log_file': '/var/log/glance/api.log',
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}
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glance_registry_context = {
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'service_description': 'Glance registry server',
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'service_name': 'Glance',
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'user_name': 'glance',
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'start_dir': '/var/lib/glance',
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'process_name': 'glance-registry',
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'executable_name': os.path.join(bin_dir, 'glance-registry'),
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'config_files': [GLANCE_REGISTRY_CONF],
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'log_file': '/var/log/glance/registry.log',
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}
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templates_dir = 'hooks/charmhelpers/contrib/openstack/templates'
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templates_dir = os.path.join(charm_dir(), templates_dir)
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render('git.upstart', '/etc/init/glance-api.conf',
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glance_api_context, perms=0o644,
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templates_dir=templates_dir)
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render('git.upstart', '/etc/init/glance-registry.conf',
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glance_registry_context, perms=0o644,
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templates_dir=templates_dir)
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# Don't restart services if the unit is supposed to be paused.
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if not is_unit_paused_set():
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service_restart('glance-api')
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service_restart('glance-registry')
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def get_optional_interfaces():
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"""Return the optional interfaces that should be checked if the relavent
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relations have appeared.
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:returns: {general_interface: [specific_int1, specific_int2, ...], ...}
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"""
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optional_interfaces = {}
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if relation_ids('ha'):
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optional_interfaces['ha'] = ['cluster']
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|
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if (relation_ids('ceph') or relation_ids('object-store') or
|
|
relation_ids('cinder-volume-service') or
|
|
relation_ids('storage-backend')):
|
|
optional_interfaces['storage-backend'] = ['ceph', 'object-store',
|
|
'cinder-volume-service',
|
|
'storage-backend']
|
|
|
|
if relation_ids('amqp'):
|
|
optional_interfaces['messaging'] = ['amqp']
|
|
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 None, None 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 swift_temp_url_key():
|
|
"""Generate a temp URL key, post it to Swift and return its value.
|
|
If it is already posted, the current value of the key will be returned.
|
|
"""
|
|
import requests
|
|
keystone_ctxt = context.IdentityServiceContext(service='glance',
|
|
service_user='glance')()
|
|
if not keystone_ctxt:
|
|
log('Missing identity-service relation. Skipping generation of '
|
|
'swift temporary url key.')
|
|
return
|
|
|
|
auth_url = '%s://%s:%s/v2.0/' % (keystone_ctxt['service_protocol'],
|
|
keystone_ctxt['service_host'],
|
|
keystone_ctxt['service_port'])
|
|
from swiftclient import client
|
|
from swiftclient import exceptions
|
|
|
|
@retry_on_exception(15, base_delay=10,
|
|
exc_type=(exceptions.ClientException,
|
|
requests.exceptions.ConnectionError))
|
|
def connect_and_post():
|
|
log('Connecting swift client...')
|
|
swift_connection = client.Connection(
|
|
authurl=auth_url, user='glance',
|
|
key=keystone_ctxt['admin_password'],
|
|
tenant_name=keystone_ctxt['admin_tenant_name'],
|
|
auth_version='2.0')
|
|
|
|
account_stats = swift_connection.head_account()
|
|
if 'x-account-meta-temp-url-key' in account_stats:
|
|
log("Temp URL key was already posted.")
|
|
return account_stats['x-account-meta-temp-url-key']
|
|
|
|
temp_url_key = pwgen(length=64)
|
|
swift_connection.post_account(headers={'x-account-meta-temp-url-key':
|
|
temp_url_key})
|
|
return temp_url_key
|
|
|
|
return connect_and_post()
|
|
|
|
|
|
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)
|
|
|
|
|
|
PASTE_INI_MARKER = 'paste-ini-marker'
|
|
REINSTALL_OPTIONS = [
|
|
'--reinstall',
|
|
'--option=Dpkg::Options::=--force-confmiss'
|
|
]
|
|
|
|
|
|
def reinstall_paste_ini():
|
|
'''
|
|
Re-install glance-{api,registry}-paste.ini file from packages
|
|
|
|
Existing glance-{api,registry}-paste.ini file will be removed
|
|
and the original files provided by the packages will be
|
|
re-installed.
|
|
|
|
This will only ever be performed once per unit.
|
|
'''
|
|
db = kv()
|
|
if not db.get(PASTE_INI_MARKER):
|
|
for paste_file in [GLANCE_REGISTRY_PASTE,
|
|
GLANCE_API_PASTE]:
|
|
if os.path.exists(paste_file):
|
|
os.remove(paste_file)
|
|
apt_install(packages=['glance-api', 'glance-registry'],
|
|
options=REINSTALL_OPTIONS,
|
|
fatal=True)
|
|
db.set(PASTE_INI_MARKER, True)
|
|
db.flush()
|
|
|
|
|
|
def is_api_ready(configs):
|
|
return (not incomplete_relation_data(configs, REQUIRED_INTERFACES))
|