Replace keystone.common.config with keystone.conf package

keystone.common.config is 1200+ lines of super dense, merge-conflict
prone, difficult to navigate, and finicky to maintain code. Let's follow
nova's lead and break it down into more manageable modules.

This patch creates a new Python package, keystone.conf, and moves all of
our configuration options into it, mirroring nova's nova.conf package.

There are a couple special modules in keystone.conf introduced here as
well:

- keystone.conf.__init__: This causes all of Keystone options to be
  registered on import, so consumers of keystone.conf don't have
  races with config initialization code while trying to use
  oslo_config.cfg.CONF directly (keystone.conf replaces all uses for
  oslo_config.cfg.CONF in keystone).

- keystone.conf.base: Keystone's [DEFAULT] group options. I'd prefer
  this to be called 'default.py', but I'm just copying nova's lead here.

- keystone.conf.opts: The entry point for oslo.config itself.

- keystone.conf.constants: There are a few constants (deprecation
  messages, default paths, etc) that are used by multiple configuration
  modules, so they need to live in a common place.

Change-Id: Ia3daffe3fef111b42de203762e966cd14d8927e2

keystone/assignment/V8_backends/sql.py

@@ -12,17 +12,17 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from oslo_config import cfg
 import sqlalchemy
 from sqlalchemy.sql.expression import false
 
 from keystone.assignment.backends import base
 from keystone.common import sql
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 
 
 class AssignmentType(object):

keystone/assignment/backends/base.py

@@ -14,16 +14,16 @@
 
 import abc
 
-from oslo_config import cfg
 from oslo_log import log
 from oslo_log import versionutils
 import six
 
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _LW
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 LOG = log.getLogger(__name__)
 
 

keystone/assignment/controllers.py

@@ -18,7 +18,6 @@
 import functools
 import uuid
 
-from oslo_config import cfg
 from oslo_log import log
 from six.moves import urllib
 
@@ -28,12 +27,13 @@ from keystone.common import dependency
 from keystone.common import utils
 from keystone.common import validation
 from keystone.common import wsgi
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _
 from keystone import notifications
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 LOG = log.getLogger(__name__)
 
 

keystone/assignment/core.py

@@ -17,7 +17,6 @@
 import copy
 
 from oslo_cache import core as oslo_cache
-from oslo_config import cfg
 from oslo_log import log
 from oslo_log import versionutils
 
@@ -27,13 +26,14 @@ from keystone.common import cache
 from keystone.common import dependency
 from keystone.common import driver_hints
 from keystone.common import manager
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _
 from keystone.i18n import _LI, _LE
 from keystone import notifications
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 LOG = log.getLogger(__name__)
 
 # This is a general cache region for assignment administration (CRUD

keystone/assignment/role_backends/base.py

@@ -14,16 +14,16 @@
 
 import abc
 
-from oslo_config import cfg
 from oslo_log import log
 from oslo_log import versionutils
 import six
 
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 LOG = log.getLogger(__name__)
 
 

keystone/assignment/routers.py

@@ -17,15 +17,15 @@
 
 import functools
 
-from oslo_config import cfg
-
 from keystone.assignment import controllers
+
 from keystone.common import json_home
 from keystone.common import router
 from keystone.common import wsgi
+import keystone.conf
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 
 build_os_inherit_relation = functools.partial(
     json_home.build_v3_extension_resource_relation,

keystone/auth/controllers.py

@@ -15,7 +15,6 @@
 import sys
 
 from keystoneclient.common import cms
-from oslo_config import cfg
 from oslo_log import log
 from oslo_log import versionutils
 from oslo_serialization import jsonutils
@@ -23,11 +22,11 @@ from oslo_utils import importutils
 import six
 import stevedore
 
-from keystone.common import config
 from keystone.common import controller
 from keystone.common import dependency
 from keystone.common import utils
 from keystone.common import wsgi
+import keystone.conf
 from keystone import exception
 from keystone.federation import constants
 from keystone.i18n import _, _LI, _LW
@@ -36,7 +35,7 @@ from keystone.resource import controllers as resource_controllers
 
 LOG = log.getLogger(__name__)
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 
 # registry of authentication methods
 AUTH_METHODS = {}
@@ -75,7 +74,7 @@ def load_auth_methods():
         return
     # config.setup_authentication should be idempotent, call it to ensure we
     # have setup all the appropriate configuration options we may need.
-    config.setup_authentication()
+    keystone.conf.auth.setup_authentication()
     for plugin in set(CONF.auth.methods):
         AUTH_METHODS[plugin] = load_auth_method(plugin)
     AUTH_PLUGINS_LOADED = True
@@ -389,7 +388,7 @@ class Auth(controller.V3Controller):
 
     def __init__(self, *args, **kw):
         super(Auth, self).__init__(*args, **kw)
-        config.setup_authentication()
+        keystone.conf.auth.setup_authentication()
 
     def authenticate_for_token(self, request, auth=None):
         """Authenticate user and issue a token."""

keystone/auth/plugins/core.py

@@ -14,15 +14,15 @@
 
 import sys
 
-from oslo_config import cfg
 from oslo_log import log
 import six
 
 from keystone.common import dependency
+import keystone.conf
 from keystone import exception
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 LOG = log.getLogger(__name__)
 
 

keystone/auth/plugins/external.py

@@ -16,16 +16,16 @@
 
 import abc
 
-from oslo_config import cfg
 import six
 
 from keystone import auth
 from keystone.common import dependency
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 
 
 @six.add_metaclass(abc.ABCMeta)

keystone/auth/plugins/token.py

@@ -12,7 +12,6 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from oslo_config import cfg
 from oslo_log import log
 import six
 
@@ -20,6 +19,7 @@ from keystone import auth
 from keystone.auth.plugins import mapped
 from keystone.common import dependency
 from keystone.common import wsgi
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _
 from keystone.models import token_model
@@ -27,7 +27,7 @@ from keystone.models import token_model
 
 LOG = log.getLogger(__name__)
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 
 
 @dependency.requires('federation_api', 'identity_api', 'token_provider_api')

keystone/catalog/backends/base.py

@@ -14,14 +14,14 @@
 
 import abc
 
-from oslo_config import cfg
 from oslo_log import log
 import six
 
+import keystone.conf
 from keystone import exception
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 LOG = log.getLogger(__name__)
 
 

keystone/catalog/backends/sql.py

@@ -15,7 +15,6 @@
 
 import itertools
 
-from oslo_config import cfg
 import sqlalchemy
 from sqlalchemy.sql import true
 
@@ -23,11 +22,12 @@ from keystone.catalog.backends import base
 from keystone.common import driver_hints
 from keystone.common import sql
 from keystone.common import utils
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 
 
 class Region(sql.ModelBase, sql.DictBase):

keystone/catalog/backends/templated.py

@@ -15,19 +15,19 @@
 import itertools
 import os.path
 
-from oslo_config import cfg
 from oslo_log import log
 import six
 
 from keystone.catalog.backends import base
 from keystone.common import utils
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _LC
 
 
 LOG = log.getLogger(__name__)
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 
 
 def parse_templates(template_lines):

keystone/catalog/core.py

@@ -16,7 +16,6 @@
 """Main entry point into the Catalog service."""
 
 from oslo_cache import core as oslo_cache
-from oslo_config import cfg
 from oslo_log import log
 from oslo_log import versionutils
 
@@ -25,12 +24,13 @@ from keystone.common import cache
 from keystone.common import dependency
 from keystone.common import driver_hints
 from keystone.common import manager
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _
 from keystone import notifications
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 LOG = log.getLogger(__name__)
 
 

keystone/cmd/cli.py

@@ -25,12 +25,12 @@ from oslo_log import versionutils
 from oslo_serialization import jsonutils
 import pbr.version
 
-from keystone.common import config
 from keystone.common import driver_hints
 from keystone.common import openssl
 from keystone.common import sql
 from keystone.common.sql import migration_helpers
 from keystone.common import utils
+import keystone.conf
 from keystone import exception
 from keystone.federation import idp
 from keystone.federation import utils as mapping_engine
@@ -39,7 +39,7 @@ from keystone.server import backends
 from keystone import token
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 LOG = log.getLogger(__name__)
 
 
@@ -955,9 +955,9 @@ command_opt = cfg.SubCommandOpt('command',
 def main(argv=None, config_files=None):
     CONF.register_cli_opt(command_opt)
 
-    config.configure()
+    keystone.conf.configure()
     sql.initialize()
-    config.set_default_for_default_log_levels()
+    keystone.conf.set_default_for_default_log_levels()
 
     CONF(args=argv[1:],
          project='keystone',
@@ -966,5 +966,5 @@ def main(argv=None, config_files=None):
          default_config_files=config_files)
     if not CONF.default_config_files:
         LOG.warning(_LW('Config file not found, using default configs.'))
-    config.setup_logging()
+    keystone.conf.setup_logging()
     CONF.command.cmd_class.main()

keystone/common/cache/core.py

@@ -16,12 +16,12 @@
 import dogpile.cache
 from dogpile.cache import api
 from oslo_cache import core as cache
-from oslo_config import cfg
 
 from keystone.common.cache import _context_cache
+import keystone.conf
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 CACHE_REGION = cache.create_region()
 
 

keystone/common/controller.py

@@ -15,7 +15,6 @@
 import functools
 import uuid
 
-from oslo_config import cfg
 from oslo_log import log
 from oslo_log import versionutils
 from oslo_utils import strutils
@@ -26,13 +25,14 @@ from keystone.common import dependency
 from keystone.common import driver_hints
 from keystone.common import utils
 from keystone.common import wsgi
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _, _LW
 from keystone.models import token_model
 
 
 LOG = log.getLogger(__name__)
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 
 
 def v2_deprecated(f):

keystone/common/kvs/backends/memcached.py

@@ -20,14 +20,14 @@ import time
 from dogpile.cache import api
 from dogpile.cache.backends import memcached
 from oslo_cache.backends import memcache_pool
-from oslo_config import cfg
 from six.moves import range
 
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 NO_VALUE = api.NO_VALUE
 random = _random.SystemRandom()
 

keystone/common/kvs/core.py

@@ -22,12 +22,12 @@ from dogpile.cache import proxy
 from dogpile.cache import region
 from dogpile.cache import util as dogpile_util
 from dogpile.core import nameregistry
-from oslo_config import cfg
 from oslo_log import log
 from oslo_log import versionutils
 from oslo_utils import importutils
 from oslo_utils import reflection
 
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _
 from keystone.i18n import _LI
@@ -39,7 +39,7 @@ __all__ = ('KeyValueStore', 'KeyValueStoreLock', 'LockTimeout',
 
 
 BACKENDS_REGISTERED = False
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 KEY_VALUE_STORE_REGISTRY = weakref.WeakValueDictionary()
 LOCK_WINDOW = 1
 LOG = log.getLogger(__name__)

keystone/common/openssl.py

@@ -16,14 +16,14 @@
 import os
 import subprocess  # nosec : see comments in the code below
 
-from oslo_config import cfg
 from oslo_log import log
 
 from keystone.common import utils
+import keystone.conf
 from keystone.i18n import _LI, _LE, _LW
 
 LOG = log.getLogger(__name__)
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 
 PUBLIC_DIR_PERMS = 0o755        # -rwxr-xr-x
 PRIVATE_DIR_PERMS = 0o750       # -rwxr-x---

keystone/common/profiler.py

@@ -15,11 +15,11 @@ import oslo_messaging
 import osprofiler.notifier
 import osprofiler.web
 
-from keystone.common import config
+import keystone.conf
 from keystone.i18n import _LI
 
 
-CONF = config.CONF
+CONF = keystone.conf.CONF
 LOG = log.getLogger(__name__)
 
 

keystone/common/request.py

@@ -10,10 +10,10 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from oslo_config import cfg
 import webob
 from webob.descriptors import environ_getter
 
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _
 
@@ -21,7 +21,7 @@ from keystone.i18n import _
 # Environment variable used to pass the request context
 CONTEXT_ENV = 'openstack.context'
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 
 
 class Request(webob.Request):

keystone/common/sql/core.py

@@ -20,7 +20,6 @@ CONF() because it sets up configuration options.
 """
 import functools
 
-from oslo_config import cfg
 from oslo_db import exception as db_exception
 from oslo_db import options as db_options
 from oslo_db.sqlalchemy import enginefacade
@@ -35,11 +34,12 @@ from sqlalchemy import types as sql_types
 
 from keystone.common import driver_hints
 from keystone.common import utils
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 LOG = log.getLogger(__name__)
 
 ModelBase = declarative.declarative_base()

keystone/common/sql/migrate_repo/versions/082_add_federation_tables.py

@@ -12,12 +12,12 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from oslo_config import cfg
 import sqlalchemy as sql
 
 from keystone.common.sql import migration_helpers
+import keystone.conf
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 _RELAY_STATE_PREFIX = 'relay_state_prefix'
 
 

keystone/common/sql/migration_helpers.py

@@ -19,19 +19,19 @@ import sys
 
 import migrate
 from migrate import exceptions
-from oslo_config import cfg
 from oslo_db.sqlalchemy import migration
 from oslo_utils import importutils
 import six
 import sqlalchemy
 
 from keystone.common import sql
+import keystone.conf
 from keystone import contrib
 from keystone import exception
 from keystone.i18n import _
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 DEFAULT_EXTENSIONS = []
 
 MIGRATED_EXTENSIONS = ['endpoint_policy',

keystone/common/tokenless_auth.py

@@ -15,18 +15,18 @@
 
 import hashlib
 
-from oslo_config import cfg
 from oslo_log import log
 
 from keystone.auth import controllers
 from keystone.common import dependency
+import keystone.conf
 from keystone import exception
 from keystone.federation import constants as federation_constants
 from keystone.federation import utils
 from keystone.i18n import _
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 LOG = log.getLogger(__name__)
 
 

keystone/common/utils.py

@@ -25,7 +25,6 @@ import os
 import pwd
 import uuid
 
-from oslo_config import cfg
 from oslo_log import log
 from oslo_serialization import jsonutils
 from oslo_utils import reflection
@@ -36,11 +35,12 @@ import six
 from six import moves
 
 from keystone.common import authorization
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _, _LE, _LW
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 LOG = log.getLogger(__name__)
 WHITELISTED_PROPERTIES = [
     'tenant_id', 'project_id', 'user_id',

keystone/common/wsgi.py

@@ -24,7 +24,6 @@ import itertools
 import re
 import wsgiref.util
 
-from oslo_config import cfg
 import oslo_i18n
 from oslo_log import log
 from oslo_serialization import jsonutils
@@ -39,6 +38,7 @@ from keystone.common import dependency
 from keystone.common import json_home
 from keystone.common import request as request_mod
 from keystone.common import utils
+import keystone.conf
 from keystone import exception
 from keystone.i18n import _
 from keystone.i18n import _LI
@@ -46,7 +46,7 @@ from keystone.i18n import _LW
 from keystone.models import token_model
 
 
-CONF = cfg.CONF
+CONF = keystone.conf.CONF
 LOG = log.getLogger(__name__)
 
 # Environment variable used to pass the request context

keystone/conf/__init__.py

@@ -0,0 +1,189 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import logging
+
+from oslo_cache import core as cache
+from oslo_config import cfg
+from oslo_log import log
+import oslo_messaging
+from oslo_middleware import cors
+from osprofiler import opts as profiler
+
+from keystone.conf import assignment
+from keystone.conf import auth
+from keystone.conf import base
+from keystone.conf import catalog
+from keystone.conf import credential
+from keystone.conf import domain_config
+from keystone.conf import endpoint_filter
+from keystone.conf import endpoint_policy
+from keystone.conf import eventlet_server
+from keystone.conf import federation
+from keystone.conf import fernet_tokens
+from keystone.conf import identity
+from keystone.conf import identity_mapping
+from keystone.conf import kvs
+from keystone.conf import ldap
+from keystone.conf import memcache
+from keystone.conf import oauth1
+from keystone.conf import os_inherit
+from keystone.conf import paste_deploy
+from keystone.conf import policy
+from keystone.conf import resource
+from keystone.conf import revoke
+from keystone.conf import role
+from keystone.conf import saml
+from keystone.conf import shadow_users
+from keystone.conf import signing
+from keystone.conf import token
+from keystone.conf import tokenless_auth
+from keystone.conf import trust
+
+
+CONF = cfg.CONF
+
+
+conf_modules = [
+    assignment,
+    auth,
+    base,
+    catalog,
+    credential,
+    domain_config,
+    endpoint_filter,
+    endpoint_policy,
+    eventlet_server,
+    federation,
+    fernet_tokens,
+    identity,
+    identity_mapping,
+    kvs,
+    ldap,
+    memcache,
+    oauth1,
+    os_inherit,
+    paste_deploy,
+    policy,
+    resource,
+    revoke,
+    role,
+    saml,
+    shadow_users,
+    signing,
+    token,
+    tokenless_auth,
+    trust,
+]
+
+
+# Options are registered when keystone.conf is first imported.
+for module in conf_modules:
+    module.register_opts(CONF)
+
+
+oslo_messaging.set_transport_defaults(control_exchange='keystone')
+
+
+def set_default_for_default_log_levels():
+    """Set the default for the default_log_levels option for keystone.
+
+    Keystone uses some packages that other OpenStack services don't use that do
+    logging. This will set the default_log_levels default level for those
+    packages.
+
+    This function needs to be called before CONF().
+
+    """
+    extra_log_level_defaults = [
+        'dogpile=INFO',
+        'routes=INFO',
+    ]
+
+    log.register_options(CONF)
+    log.set_defaults(default_log_levels=log.get_default_log_levels() +
+                     extra_log_level_defaults)
+
+
+def setup_logging():
+    """Set up logging for the keystone package."""
+    log.setup(CONF, 'keystone')
+    logging.captureWarnings(True)
+
+
+def configure(conf=None):
+    if conf is None:
+        conf = CONF
+
+    conf.register_cli_opt(
+        cfg.BoolOpt('standard-threads', default=False,
+                    help='Do not monkey-patch threading system modules.'))
+    conf.register_cli_opt(
+        cfg.StrOpt('pydev-debug-host',
+                   help='Host to connect to for remote debugger.'))
+    conf.register_cli_opt(
+        cfg.PortOpt('pydev-debug-port',
+                    help='Port to connect to for remote debugger.'))
+
+    for module in conf_modules:
+        module.register_opts(conf)
+
+    # register any non-default auth methods here (used by extensions, etc)
+    auth.setup_authentication()
+
+    # add oslo.cache related config options
+    cache.configure(conf)
+
+
+def set_external_opts_defaults():
+    """Update default configuration options for oslo.middleware."""
+    # CORS Defaults
+    # TODO(krotscheck): Update with https://review.openstack.org/#/c/285368/
+    cfg.set_defaults(cors.CORS_OPTS,
+                     allow_headers=['X-Auth-Token',
+                                    'X-Openstack-Request-Id',
+                                    'X-Subject-Token',
+                                    'X-Project-Id',
+                                    'X-Project-Name',
+                                    'X-Project-Domain-Id',
+                                    'X-Project-Domain-Name',
+                                    'X-Domain-Id',
+                                    'X-Domain-Name'],
+                     expose_headers=['X-Auth-Token',
+                                     'X-Openstack-Request-Id',
+                                     'X-Subject-Token'],
+                     allow_methods=['GET',
+                                    'PUT',
+                                    'POST',
+                                    'DELETE',
+                                    'PATCH']
+                     )
+
+    # configure OSprofiler options
+    profiler.set_defaults(CONF, enabled=False, trace_sqlalchemy=False)
+
+    # Oslo.cache is always enabled by default for request-local caching
+    # TODO(morganfainberg): Fix this to not use internal interface when
+    # oslo.cache has proper interface to set defaults added. This is is
+    # just a bad way to do this.
+    opts = cache._opts.list_opts()
+    for opt_list in opts:
+        if opt_list[0] == 'cache':
+            for o in opt_list[1]:
+                if o.name == 'enabled':
+                    o.default = True
+
+
+def set_config_defaults():
+    """Override all configuration default values for keystone."""
+    set_default_for_default_log_levels()
+    set_external_opts_defaults()

keystone/conf/assignment.py

@@ -0,0 +1,48 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from oslo_config import cfg
+
+from keystone.conf import utils
+
+
+driver = cfg.StrOpt(
+    'driver',
+    help=utils.fmt("""
+Entrypoint for the assignment backend driver in the keystone.assignment
+namespace. Only an SQL driver is supplied. If an assignment driver is not
+specified, the identity driver will choose the assignment driver (driver
+selection based on `[identity]/driver` option is deprecated and will be removed
+in the "O" release).
+"""))
+
+prohibited_implied_role = cfg.ListOpt(
+    'prohibited_implied_role',
+    default=['admin'],
+    help=utils.fmt("""
+A list of role names which are prohibited from being an implied role.
+"""))
+
+
+GROUP_NAME = __name__.split('.')[-1]
+ALL_OPTS = [
+    driver,
+    prohibited_implied_role
+]
+
+
+def register_opts(conf):
+    conf.register_opts(ALL_OPTS, group=GROUP_NAME)
+
+
+def list_opts():
+    return {GROUP_NAME: ALL_OPTS}

keystone/conf/auth.py

@@ -0,0 +1,88 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from oslo_config import cfg
+
+from keystone.conf import constants
+from keystone.conf import utils
+
+
+methods = cfg.ListOpt(
+    'methods',
+    default=constants._DEFAULT_AUTH_METHODS,
+    help=utils.fmt("""
+Allowed authentication methods.
+"""))
+
+password = cfg.StrOpt(  # nosec : This is the name of the plugin, not
+    'password',         # a password that needs to be protected.
+    help=utils.fmt("""
+Entrypoint for the password auth plugin module in the keystone.auth.password
+namespace.
+"""))
+
+token = cfg.StrOpt(
+    'token',
+    help=utils.fmt("""
+Entrypoint for the token auth plugin module in the keystone.auth.token
+namespace.
+"""))
+
+# deals with REMOTE_USER authentication
+external = cfg.StrOpt(
+    'external',
+    help=utils.fmt("""
+Entrypoint for the external (REMOTE_USER) auth plugin module in the
+keystone.auth.external namespace. Supplied drivers are DefaultDomain and
+Domain. The default driver is DefaultDomain.
+"""))
+
+oauth1 = cfg.StrOpt(
+    'oauth1',
+    help=utils.fmt("""
+Entrypoint for the oAuth1.0 auth plugin module in the keystone.auth.oauth1
+namespace.
+"""))
+
+GROUP_NAME = __name__.split('.')[-1]
+ALL_OPTS = [
+    methods,
+    password,
+    token,
+    external,
+    oauth1,
+]
+
+
+def _register_auth_plugin_opt(conf, option):
+    conf.register_opt(option, group=GROUP_NAME)
+
+
+def setup_authentication(conf=None):
+    """Register non-default auth methods (used by extensions, etc)."""
+    # register any non-default auth methods here (used by extensions, etc)
+    if conf is None:
+        conf = cfg.CONF
+    for method_name in conf.auth.methods:
+        if method_name not in constants._DEFAULT_AUTH_METHODS:
+            option = cfg.StrOpt(method_name)
+            _register_auth_plugin_opt(conf, option)
+
+
+def register_opts(conf):
+    conf.register_opts(ALL_OPTS, group=GROUP_NAME)
+
+    setup_authentication(conf)
+
+
+def list_opts():
+    return {GROUP_NAME: ALL_OPTS}

keystone/conf/base.py

@@ -0,0 +1,224 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from oslo_config import cfg
+
+from keystone.conf import utils
+
+
+_DEPRECATE_DII_MSG = utils.fmt("""
+The option to set domain_id_immutable to false has been deprecated in the M
+release and will be removed in the O release.
+""")
+
+
+admin_token = cfg.StrOpt(
+    'admin_token',
+    secret=True,
+    default=None,
+    help=utils.fmt("""
+A "shared secret" that can be used to bootstrap Keystone. This "token" does not
+represent a user, and carries no explicit authorization. If set to `None`, the
+value is ignored and the `admin_token` log in mechanism is effectively
+disabled. To completely disable `admin_token` in production (highly
+recommended), remove AdminTokenAuthMiddleware from your paste application
+pipelines (for example, in keystone-paste.ini).
+"""))
+
+public_endpoint = cfg.StrOpt(
+    'public_endpoint',
+    help=utils.fmt("""
+The base public endpoint URL for Keystone that is advertised to clients (NOTE:
+this does NOT affect how Keystone listens for connections). Defaults to the
+base host URL of the request. E.g. a request to http://server:5000/v3/users
+will default to http://server:5000. You should only need to set this value if
+the base URL contains a path (e.g. /prefix/v3) or the endpoint should be found
+on a different server.
+"""))
+
+admin_endpoint = cfg.StrOpt(
+    'admin_endpoint',
+    help=utils.fmt("""
+The base admin endpoint URL for Keystone that is advertised to clients (NOTE:
+this does NOT affect how Keystone listens for connections). Defaults to the
+base host URL of the request. E.g. a request to http://server:35357/v3/users
+will default to http://server:35357. You should only need to set this value if
+the base URL contains a path (e.g. /prefix/v3) or the endpoint should be found
+on a different server.
+"""))
+
+max_project_tree_depth = cfg.IntOpt(
+    'max_project_tree_depth',
+    default=5,
+    help=utils.fmt("""
+Maximum depth of the project hierarchy, excluding the project acting as a
+domain at the top of the hierarchy. WARNING: setting it to a large value may
+adversely impact  performance.
+"""))
+
+max_param_size = cfg.IntOpt(
+    'max_param_size',
+    default=64,
+    help=utils.fmt("""
+Limit the sizes of user & project ID/names.
+"""))
+
+# we allow tokens to be a bit larger to accommodate PKI
+max_token_size = cfg.IntOpt(
+    'max_token_size',
+    default=8192,
+    help=utils.fmt("""
+Similar to max_param_size, but provides an exception for token values.
+"""))
+
+member_role_id = cfg.StrOpt(
+    'member_role_id',
+    default='9fe2ff9ee4384b1894a90878d3e92bab',
+    help=utils.fmt("""
+Similar to the member_role_name option, this represents the default role ID
+used to associate users with their default projects in the v2 API. This will be
+used as the explicit role where one is not specified by the v2 API.
+"""))
+
+member_role_name = cfg.StrOpt(
+    'member_role_name',
+    default='_member_',
+    help=utils.fmt("""
+This is the role name used in combination with the member_role_id option; see
+that option for more detail.
+"""))
+
+# NOTE(lbragstad/morganfainberg): This value of 10k was measured as having an
+# approximate 30% clock-time savings over the old default of 40k.  The passlib
+# default is not static and grows over time to constantly approximate ~300ms of
+# CPU time to hash; this was considered too high.  This value still exceeds the
+# glibc default of 5k.
+crypt_strength = cfg.IntOpt(
+    'crypt_strength',
+    default=10000,
+    min=1000,
+    max=100000,
+    help=utils.fmt("""
+The value passed as the keyword "rounds" to passlib\'s encrypt method.
+"""))
+
+list_limit = cfg.IntOpt(
+    'list_limit',
+    help=utils.fmt("""
+The maximum number of entities that will be returned in a collection, with no
+limit set by default. This global limit may be then overridden for a specific
+driver, by specifying a list_limit in the appropriate section (e.g.
+[assignment]).
+"""))
+
+domain_id_immutable = cfg.BoolOpt(
+    'domain_id_immutable',
+    default=True,
+    deprecated_for_removal=True,
+    deprecated_reason=_DEPRECATE_DII_MSG,
+    help=utils.fmt("""
+Set this to false if you want to enable the ability for user, group and project
+entities to be moved between domains by updating their domain_id. Allowing such
+movement is not recommended if the scope of a domain admin is being restricted
+by use of an appropriate policy file (see policy.v3cloudsample as an example).
+This ability is deprecated and will be removed in a future release.
+"""))
+
+strict_password_check = cfg.BoolOpt(
+    'strict_password_check',
+    default=False,
+    help=utils.fmt("""
+If set to true, strict password length checking is performed for password
+manipulation. If a password exceeds the maximum length, the operation will fail
+with an HTTP 403 Forbidden error. If set to false, passwords are automatically
+truncated to the maximum length.
+"""))
+
+secure_proxy_ssl_header = cfg.StrOpt(
+    'secure_proxy_ssl_header',
+    default='HTTP_X_FORWARDED_PROTO',
+    deprecated_for_removal=True,
+    deprecated_reason=utils.fmt("""
+Use http_proxy_to_wsgi middleware configuration instead.
+"""),
+    help=utils.fmt("""
+The HTTP header used to determine the scheme for the original request, even if
+it was removed by an SSL terminating proxy.
+"""))
+
+insecure_debug = cfg.BoolOpt(
+    'insecure_debug',
+    default=False,
+    help=utils.fmt("""
+If set to true the server will return information in the response that may
+allow an unauthenticated or authenticated user to get more information than
+normal, such as why authentication failed. This may be useful for debugging but
+is insecure.
+"""))
+
+default_publisher_id = cfg.StrOpt(
+    'default_publisher_id',
+    help=utils.fmt("""
+Default publisher_id for outgoing notifications
+"""))
+
+notification_format = cfg.StrOpt(
+    'notification_format',
+    default='basic',
+    choices=['basic', 'cadf'],
+    help=utils.fmt("""
+Define the notification format for Identity Service events. A "basic"
+notification has information about the resource being operated on. A "cadf"
+notification has the same information, as well as information about the
+initiator of the event.
+"""))
+
+notification_opt_out = cfg.MultiStrOpt(
+    'notification_opt_out',
+    default=[],
+    help=utils.fmt("""
+Define the notification options to opt-out from. The value expected is:
+identity.<resource_type>.<operation>. This field can be set multiple times in
+order to add more notifications to opt-out from. For example:
+notification_opt_out=identity.user.create
+notification_opt_out=identity.authenticate.success
+"""))
+
+
+GROUP_NAME = 'DEFAULT'
+ALL_OPTS = [
+    admin_token,
+    public_endpoint,
+    admin_endpoint,
+    max_project_tree_depth,
+    max_param_size,
+    max_token_size,
+    member_role_id,
+    member_role_name,
+    crypt_strength,
+    list_limit,
+    domain_id_immutable,
+    strict_password_check,
+    secure_proxy_ssl_header,
+    insecure_debug,
+    default_publisher_id,
+    notification_format,
+    notification_opt_out,
+]
+
+
+def register_opts(conf):
+    conf.register_opts(ALL_OPTS)
+
+
+def list_opts():
+    return {GROUP_NAME: ALL_OPTS}

keystone/conf/catalog.py

@@ -0,0 +1,70 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from oslo_config import cfg
+
+from keystone.conf import utils
+
+
+template_file = cfg.StrOpt(
+    'template_file',
+    default='default_catalog.templates',
+    help=utils.fmt("""
+Catalog template file name for use with the template catalog backend.
+"""))
+
+driver = cfg.StrOpt(
+    'driver',
+    default='sql',
+    help=utils.fmt("""
+Entrypoint for the catalog backend driver in the keystone.catalog namespace.
+Supplied drivers are kvs, sql, templated, and endpoint_filter.sql
+"""))
+
+aching = cfg.BoolOpt(
+    'caching',
+    default=True,
+    help=utils.fmt("""
+Toggle for catalog caching. This has no effect unless global caching is
+enabled.
+"""))
+
+cache_time = cfg.IntOpt(
+    'cache_time',
+    help=utils.fmt("""
+Time to cache catalog data (in seconds). This has no effect unless global and
+catalog caching are enabled.
+"""))
+
+list_limit = cfg.IntOpt(
+    'list_limit',
+    help=utils.fmt("""
+Maximum number of entities that will be returned in a catalog collection.
+"""))
+
+
+GROUP_NAME = __name__.split('.')[-1]
+ALL_OPTS = [
+    template_file,
+    driver,
+    aching,
+    cache_time,
+    list_limit,
+]
+
+
+def register_opts(conf):
+    conf.register_opts(ALL_OPTS, group=GROUP_NAME)
+
+
+def list_opts():
+    return {GROUP_NAME: ALL_OPTS}

keystone/conf/constants.py

@@ -0,0 +1,30 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+"""Constants for use in the keystone.conf package.
+
+These constants are shared by more than one module in the keystone.conf
+package.
+
+"""
+
+from keystone.conf import utils
+
+
+_DEFAULT_AUTH_METHODS = ['external', 'password', 'token', 'oauth1']
+
+_CERTFILE = '/etc/keystone/ssl/certs/signing_cert.pem'
+_KEYFILE = '/etc/keystone/ssl/private/signing_key.pem'
+
+_DEPRECATE_PKI_MSG = utils.fmt("""
+PKI token support has been deprecated in the M release and will be removed in
+the O release. Fernet or UUID tokens are recommended.