charm-keystone/hooks/keystone_context.py

270 lines
9.0 KiB
Python

import hashlib
import os
from base64 import b64decode
from charmhelpers.core.host import (
mkdir,
write_file,
service_restart,
)
from charmhelpers.contrib.openstack import context
from charmhelpers.contrib.hahelpers.cluster import (
determine_apache_port,
determine_api_port,
)
from charmhelpers.core.hookenv import (
config,
log,
DEBUG,
INFO,
)
from charmhelpers.core.strutils import (
bool_from_string,
)
from charmhelpers.contrib.hahelpers.apache import install_ca_cert
CA_CERT_PATH = '/usr/local/share/ca-certificates/keystone_juju_ca_cert.crt'
def is_cert_provided_in_config():
ca = config('ssl_ca')
cert = config('ssl_cert')
key = config('ssl_key')
return bool(ca and cert and key)
class ApacheSSLContext(context.ApacheSSLContext):
interfaces = ['https']
external_ports = []
service_namespace = 'keystone'
def __call__(self):
# late import to work around circular dependency
from keystone_utils import (
determine_ports,
update_hash_from_path,
)
ssl_paths = [CA_CERT_PATH,
os.path.join('/etc/apache2/ssl/',
self.service_namespace)]
self.external_ports = determine_ports()
before = hashlib.sha256()
for path in ssl_paths:
update_hash_from_path(before, path)
ret = super(ApacheSSLContext, self).__call__()
after = hashlib.sha256()
for path in ssl_paths:
update_hash_from_path(after, path)
# Ensure that apache2 is restarted if these change
if before.hexdigest() != after.hexdigest():
service_restart('apache2')
return ret
def configure_cert(self, cn):
from keystone_utils import (
SSH_USER,
get_ca,
ensure_permissions,
is_ssl_cert_master,
)
# Ensure ssl dir exists whether master or not
ssl_dir = os.path.join('/etc/apache2/ssl/', self.service_namespace)
perms = 0o755
mkdir(path=ssl_dir, owner=SSH_USER, group='keystone', perms=perms)
# Ensure accessible by keystone ssh user and group (for sync)
ensure_permissions(ssl_dir, user=SSH_USER, group='keystone',
perms=perms)
if not is_cert_provided_in_config() and not is_ssl_cert_master():
log("Not ssl-cert-master - skipping apache cert config until "
"master is elected", level=INFO)
return
log("Creating apache ssl certs in %s" % (ssl_dir), level=INFO)
cert = config('ssl_cert')
key = config('ssl_key')
if not (cert and key):
ca = get_ca(user=SSH_USER)
cert, key = ca.get_cert_and_key(common_name=cn)
else:
cert = b64decode(cert)
key = b64decode(key)
write_file(path=os.path.join(ssl_dir, 'cert_{}'.format(cn)),
content=cert, owner=SSH_USER, group='keystone', perms=0o644)
write_file(path=os.path.join(ssl_dir, 'key_{}'.format(cn)),
content=key, owner=SSH_USER, group='keystone', perms=0o644)
def configure_ca(self):
from keystone_utils import (
SSH_USER,
get_ca,
ensure_permissions,
is_ssl_cert_master,
)
if not is_cert_provided_in_config() and not is_ssl_cert_master():
log("Not ssl-cert-master - skipping apache ca config until "
"master is elected", level=INFO)
return
ca_cert = config('ssl_ca')
if ca_cert is None:
ca = get_ca(user=SSH_USER)
ca_cert = ca.get_ca_bundle()
else:
ca_cert = b64decode(ca_cert)
# Ensure accessible by keystone ssh user and group (unison)
install_ca_cert(ca_cert)
ensure_permissions(CA_CERT_PATH, user=SSH_USER, group='keystone',
perms=0o0644)
def canonical_names(self):
addresses = self.get_network_addresses()
addrs = []
for address, endpoint in addresses:
addrs.append(endpoint)
return list(set(addrs))
class HAProxyContext(context.HAProxyContext):
interfaces = []
def __call__(self):
'''
Extends the main charmhelpers HAProxyContext with a port mapping
specific to this charm.
Also used to extend nova.conf context with correct api_listening_ports
'''
from keystone_utils import api_port
ctxt = super(HAProxyContext, self).__call__()
# determine which port api processes should bind to, depending
# on existence of haproxy + apache frontends
listen_ports = {}
listen_ports['admin_port'] = api_port('keystone-admin')
listen_ports['public_port'] = api_port('keystone-public')
# Apache ports
a_admin_port = determine_apache_port(api_port('keystone-admin'),
singlenode_mode=True)
a_public_port = determine_apache_port(api_port('keystone-public'),
singlenode_mode=True)
port_mapping = {
'admin-port': [
api_port('keystone-admin'), a_admin_port],
'public-port': [
api_port('keystone-public'), a_public_port],
}
# for haproxy.conf
ctxt['service_ports'] = port_mapping
# for keystone.conf
ctxt['listen_ports'] = listen_ports
return ctxt
class KeystoneContext(context.OSContextGenerator):
interfaces = []
def __call__(self):
from keystone_utils import (
api_port, set_admin_token, endpoint_url, resolve_address,
PUBLIC, ADMIN, PKI_CERTS_DIR, SSH_USER, ensure_permissions,
)
ctxt = {}
ctxt['token'] = set_admin_token(config('admin-token'))
ctxt['admin_port'] = determine_api_port(api_port('keystone-admin'),
singlenode_mode=True)
ctxt['public_port'] = determine_api_port(api_port('keystone-public'),
singlenode_mode=True)
debug = config('debug')
ctxt['debug'] = debug and bool_from_string(debug)
verbose = config('verbose')
ctxt['verbose'] = verbose and bool_from_string(verbose)
ctxt['token_expiration'] = config('token-expiration')
ctxt['identity_backend'] = config('identity-backend')
ctxt['assignment_backend'] = config('assignment-backend')
if config('identity-backend') == 'ldap':
ctxt['ldap_server'] = config('ldap-server')
ctxt['ldap_user'] = config('ldap-user')
ctxt['ldap_password'] = config('ldap-password')
ctxt['ldap_suffix'] = config('ldap-suffix')
ctxt['ldap_readonly'] = config('ldap-readonly')
ldap_flags = config('ldap-config-flags')
if ldap_flags:
flags = context.config_flags_parser(ldap_flags)
ctxt['ldap_config_flags'] = flags
enable_pki = config('enable-pki')
if enable_pki and bool_from_string(enable_pki):
ctxt['signing'] = True
ctxt['token_provider'] = 'pki'
if 'token_provider' in ctxt:
log("Configuring PKI token cert paths", level=DEBUG)
certs = os.path.join(PKI_CERTS_DIR, 'certs')
privates = os.path.join(PKI_CERTS_DIR, 'privates')
for path in [PKI_CERTS_DIR, certs, privates]:
perms = 0o755
if not os.path.isdir(path):
mkdir(path=path, owner=SSH_USER, group='keystone',
perms=perms)
else:
# Ensure accessible by ssh user and group (for sync).
ensure_permissions(path, user=SSH_USER,
group='keystone', perms=perms)
signing_paths = {'certfile': os.path.join(certs,
'signing_cert.pem'),
'keyfile': os.path.join(privates,
'signing_key.pem'),
'ca_certs': os.path.join(certs, 'ca.pem'),
'ca_key': os.path.join(certs, 'ca_key.pem')}
for key, val in signing_paths.iteritems():
ctxt[key] = val
# Base endpoint URL's which are used in keystone responses
# to unauthenticated requests to redirect clients to the
# correct auth URL.
ctxt['public_endpoint'] = endpoint_url(
resolve_address(PUBLIC),
api_port('keystone-public')).rstrip('v2.0')
ctxt['admin_endpoint'] = endpoint_url(
resolve_address(ADMIN),
api_port('keystone-admin')).rstrip('v2.0')
return ctxt
class KeystoneLoggingContext(context.OSContextGenerator):
def __call__(self):
ctxt = {}
debug = config('debug')
if debug and bool_from_string(debug):
ctxt['root_level'] = 'DEBUG'
return ctxt