308 lines
14 KiB
Python
308 lines
14 KiB
Python
# Copyright 2011 OpenStack Foundation
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Routines for configuring Glance
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"""
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import logging
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import logging.config
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import logging.handlers
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import os
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from oslo_config import cfg
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from oslo_middleware import cors
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from oslo_policy import policy
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from paste import deploy
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from glance.i18n import _
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from glance.version import version_info as version
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paste_deploy_opts = [
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cfg.StrOpt('flavor',
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help=_('Partial name of a pipeline in your paste configuration '
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'file with the service name removed. For example, if '
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'your paste section name is '
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'[pipeline:glance-api-keystone] use the value '
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'"keystone"')),
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cfg.StrOpt('config_file',
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help=_('Name of the paste configuration file.')),
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]
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image_format_opts = [
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cfg.ListOpt('container_formats',
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default=['ami', 'ari', 'aki', 'bare', 'ovf', 'ova', 'docker'],
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help=_("Supported values for the 'container_format' "
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"image attribute"),
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deprecated_opts=[cfg.DeprecatedOpt('container_formats',
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group='DEFAULT')]),
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cfg.ListOpt('disk_formats',
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default=['ami', 'ari', 'aki', 'vhd', 'vhdx', 'vmdk', 'raw',
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'qcow2', 'vdi', 'iso'],
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help=_("Supported values for the 'disk_format' "
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"image attribute"),
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deprecated_opts=[cfg.DeprecatedOpt('disk_formats',
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group='DEFAULT')]),
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]
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task_opts = [
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cfg.IntOpt('task_time_to_live',
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default=48,
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help=_("Time in hours for which a task lives after, either "
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"succeeding or failing"),
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deprecated_opts=[cfg.DeprecatedOpt('task_time_to_live',
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group='DEFAULT')]),
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cfg.StrOpt('task_executor',
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default='taskflow',
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help=_("Specifies which task executor to be used to run the "
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"task scripts.")),
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cfg.StrOpt('work_dir',
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help=_('Work dir for asynchronous task operations. '
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'The directory set here will be used to operate over '
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'images - normally before they are imported in the '
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'destination store. When providing work dir, make sure '
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'enough space is provided for concurrent tasks to run '
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'efficiently without running out of space. A rough '
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'estimation can be done by multiplying the number of '
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'`max_workers` - or the N of workers running - by an '
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'average image size (e.g 500MB). The image size '
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'estimation should be done based on the average size in '
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'your deployment. Note that depending on the tasks '
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'running you may need to multiply this number by some '
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'factor depending on what the task does. For example, '
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'you may want to double the available size if image '
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'conversion is enabled. All this being said, remember '
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'these are just estimations and you should do them '
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'based on the worst case scenario and be prepared to '
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'act in case they were wrong.')),
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]
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common_opts = [
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cfg.BoolOpt('allow_additional_image_properties', default=True,
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help=_('Whether to allow users to specify image properties '
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'beyond what the image schema provides')),
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cfg.IntOpt('image_member_quota', default=128,
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help=_('Maximum number of image members per image. '
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'Negative values evaluate to unlimited.')),
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cfg.IntOpt('image_property_quota', default=128,
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help=_('Maximum number of properties allowed on an image. '
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'Negative values evaluate to unlimited.')),
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cfg.IntOpt('image_tag_quota', default=128,
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help=_('Maximum number of tags allowed on an image. '
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'Negative values evaluate to unlimited.')),
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cfg.IntOpt('image_location_quota', default=10,
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help=_('Maximum number of locations allowed on an image. '
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'Negative values evaluate to unlimited.')),
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cfg.StrOpt('data_api', default='glance.db.sqlalchemy.api',
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help=_('Python module path of data access API')),
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cfg.IntOpt('limit_param_default', default=25,
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help=_('Default value for the number of items returned by a '
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'request if not specified explicitly in the request')),
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cfg.IntOpt('api_limit_max', default=1000,
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help=_('Maximum permissible number of items that could be '
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'returned by a request')),
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cfg.BoolOpt('show_image_direct_url', default=False,
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help=_('Whether to include the backend image storage location '
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'in image properties. Revealing storage location can '
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'be a security risk, so use this setting with '
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'caution!')),
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cfg.BoolOpt('show_multiple_locations', default=False,
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help=_('Whether to include the backend image locations '
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'in image properties. '
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'For example, if using the file system store a URL of '
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'"file:///path/to/image" will be returned to the user '
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'in the \'direct_url\' meta-data field. '
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'Revealing storage location can '
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'be a security risk, so use this setting with '
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'caution! '
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'Setting this to true overrides the '
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'show_image_direct_url option.')),
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cfg.IntOpt('image_size_cap', default=1099511627776,
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max=9223372036854775808,
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help=_("Maximum size of image a user can upload in bytes. "
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"Defaults to 1099511627776 bytes (1 TB)."
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"WARNING: this value should only be increased after "
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"careful consideration and must be set to a value under "
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"8 EB (9223372036854775808).")),
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cfg.StrOpt('user_storage_quota', default='0',
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help=_("Set a system wide quota for every user. This value is "
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"the total capacity that a user can use across "
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"all storage systems. A value of 0 means unlimited."
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"Optional unit can be specified for the value. Accepted "
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"units are B, KB, MB, GB and TB representing "
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"Bytes, KiloBytes, MegaBytes, GigaBytes and TeraBytes "
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"respectively. If no unit is specified then Bytes is "
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"assumed. Note that there should not be any space "
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"between value and unit and units are case sensitive.")),
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cfg.BoolOpt('enable_v1_api', default=True,
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help=_("Deploy the v1 OpenStack Images API.")),
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cfg.BoolOpt('enable_v2_api', default=True,
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help=_("Deploy the v2 OpenStack Images API.")),
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cfg.BoolOpt('enable_v1_registry', default=True,
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help=_("Deploy the v1 OpenStack Registry API.")),
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cfg.BoolOpt('enable_v2_registry', default=True,
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help=_("Deploy the v2 OpenStack Registry API.")),
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cfg.StrOpt('pydev_worker_debug_host',
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help=_('The hostname/IP of the pydev process listening for '
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'debug connections')),
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cfg.PortOpt('pydev_worker_debug_port', default=5678,
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help=_('The port on which a pydev process is listening for '
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'connections.')),
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cfg.StrOpt('metadata_encryption_key', secret=True,
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help=_('AES key for encrypting store \'location\' metadata. '
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'This includes, if used, Swift or S3 credentials. '
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'Should be set to a random string of length 16, 24 or '
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'32 bytes')),
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cfg.StrOpt('digest_algorithm', default='sha256',
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help=_('Digest algorithm which will be used for digital '
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'signature. Use the command "openssl list-message-'
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'digest-algorithms" to get the available algorithms '
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'supported by the version of OpenSSL on the platform.'
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' Examples are "sha1", "sha256", "sha512", etc.')),
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]
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CONF = cfg.CONF
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CONF.register_opts(paste_deploy_opts, group='paste_deploy')
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CONF.register_opts(image_format_opts, group='image_format')
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CONF.register_opts(task_opts, group='task')
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CONF.register_opts(common_opts)
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policy.Enforcer(CONF)
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def parse_args(args=None, usage=None, default_config_files=None):
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CONF(args=args,
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project='glance',
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version=version.cached_version_string(),
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usage=usage,
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default_config_files=default_config_files)
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def parse_cache_args(args=None):
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config_files = cfg.find_config_files(project='glance', prog='glance-cache')
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parse_args(args=args, default_config_files=config_files)
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def _get_deployment_flavor(flavor=None):
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"""
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Retrieve the paste_deploy.flavor config item, formatted appropriately
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for appending to the application name.
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:param flavor: if specified, use this setting rather than the
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paste_deploy.flavor configuration setting
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"""
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if not flavor:
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flavor = CONF.paste_deploy.flavor
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return '' if not flavor else ('-' + flavor)
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def _get_paste_config_path():
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paste_suffix = '-paste.ini'
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conf_suffix = '.conf'
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if CONF.config_file:
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# Assume paste config is in a paste.ini file corresponding
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# to the last config file
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path = CONF.config_file[-1].replace(conf_suffix, paste_suffix)
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else:
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path = CONF.prog + paste_suffix
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return CONF.find_file(os.path.basename(path))
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def _get_deployment_config_file():
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"""
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Retrieve the deployment_config_file config item, formatted as an
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absolute pathname.
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"""
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path = CONF.paste_deploy.config_file
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if not path:
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path = _get_paste_config_path()
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if not path:
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msg = _("Unable to locate paste config file for %s.") % CONF.prog
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raise RuntimeError(msg)
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return os.path.abspath(path)
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def load_paste_app(app_name, flavor=None, conf_file=None):
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"""
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Builds and returns a WSGI app from a paste config file.
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We assume the last config file specified in the supplied ConfigOpts
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object is the paste config file, if conf_file is None.
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:param app_name: name of the application to load
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:param flavor: name of the variant of the application to load
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:param conf_file: path to the paste config file
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:raises: RuntimeError when config file cannot be located or application
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cannot be loaded from config file
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"""
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# append the deployment flavor to the application name,
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# in order to identify the appropriate paste pipeline
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app_name += _get_deployment_flavor(flavor)
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if not conf_file:
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conf_file = _get_deployment_config_file()
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try:
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logger = logging.getLogger(__name__)
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logger.debug("Loading %(app_name)s from %(conf_file)s",
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{'conf_file': conf_file, 'app_name': app_name})
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app = deploy.loadapp("config:%s" % conf_file, name=app_name)
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# Log the options used when starting if we're in debug mode...
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if CONF.debug:
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CONF.log_opt_values(logger, logging.DEBUG)
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return app
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except (LookupError, ImportError) as e:
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msg = (_("Unable to load %(app_name)s from "
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"configuration file %(conf_file)s."
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"\nGot: %(e)r") % {'app_name': app_name,
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'conf_file': conf_file,
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'e': e})
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logger.error(msg)
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raise RuntimeError(msg)
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def set_config_defaults():
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"""This method updates all configuration default values."""
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set_cors_middleware_defaults()
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def set_cors_middleware_defaults():
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"""Update default configuration options for oslo.middleware."""
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# CORS Defaults
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# TODO(krotscheck): Update with https://review.openstack.org/#/c/285368/
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cfg.set_defaults(cors.CORS_OPTS,
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allow_headers=['Content-MD5',
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'X-Image-Meta-Checksum',
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'X-Storage-Token',
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'Accept-Encoding',
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'X-Auth-Token',
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'X-Identity-Status',
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'X-Roles',
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'X-Service-Catalog',
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'X-User-Id',
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'X-Tenant-Id',
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'X-OpenStack-Request-ID'],
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expose_headers=['X-Image-Meta-Checksum',
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'X-Auth-Token',
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'X-Subject-Token',
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'X-Service-Token',
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'X-OpenStack-Request-ID'],
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allow_methods=['GET',
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'PUT',
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'POST',
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'DELETE',
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'PATCH']
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)
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