248 lines
8.6 KiB
Python
248 lines
8.6 KiB
Python
#
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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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from oslo_log import log as logging
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import six
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from six.moves.urllib import parse as urlparse
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from heat.common import exception
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from heat.common.i18n import _
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from heat.common.i18n import _LW
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from heat.engine import attributes
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from heat.engine import properties
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from heat.engine import resource
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from heat.engine import support
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LOG = logging.getLogger(__name__)
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class SwiftContainer(resource.Resource):
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PROPERTIES = (
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NAME, X_CONTAINER_READ, X_CONTAINER_WRITE, X_CONTAINER_META,
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X_ACCOUNT_META, PURGE_ON_DELETE,
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) = (
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'name', 'X-Container-Read', 'X-Container-Write', 'X-Container-Meta',
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'X-Account-Meta', 'PurgeOnDelete',
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)
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ATTRIBUTES = (
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DOMAIN_NAME, WEBSITE_URL, ROOT_URL, OBJECT_COUNT, BYTES_USED,
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HEAD_CONTAINER,
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) = (
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'DomainName', 'WebsiteURL', 'RootURL', 'ObjectCount', 'BytesUsed',
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'HeadContainer',
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)
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properties_schema = {
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NAME: properties.Schema(
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properties.Schema.STRING,
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_('Name for the container. If not specified, a unique name will '
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'be generated.')
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),
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X_CONTAINER_READ: properties.Schema(
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properties.Schema.STRING,
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_('Specify the ACL permissions on who can read objects in the '
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'container.')
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),
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X_CONTAINER_WRITE: properties.Schema(
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properties.Schema.STRING,
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_('Specify the ACL permissions on who can write objects to the '
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'container.')
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),
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X_CONTAINER_META: properties.Schema(
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properties.Schema.MAP,
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_('A map of user-defined meta data to associate with the '
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'container. Each key in the map will set the header '
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'X-Container-Meta-{key} with the corresponding value.'),
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default={}
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),
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X_ACCOUNT_META: properties.Schema(
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properties.Schema.MAP,
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_('A map of user-defined meta data to associate with the '
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'account. Each key in the map will set the header '
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'X-Account-Meta-{key} with the corresponding value.'),
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default={}
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),
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PURGE_ON_DELETE: properties.Schema(
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properties.Schema.BOOLEAN,
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_("If True, delete any objects in the container "
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"when the container is deleted. "
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"Otherwise, deleting a non-empty container "
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"will result in an error."),
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default=False,
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support_status=support.SupportStatus(
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version='2015.1')
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),
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}
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attributes_schema = {
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DOMAIN_NAME: attributes.Schema(
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_('The host from the container URL.')
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),
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WEBSITE_URL: attributes.Schema(
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_('The URL of the container.')
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),
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ROOT_URL: attributes.Schema(
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_('The parent URL of the container.')
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),
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OBJECT_COUNT: attributes.Schema(
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_('The number of objects stored in the container.')
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),
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BYTES_USED: attributes.Schema(
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_('The number of bytes stored in the container.')
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),
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HEAD_CONTAINER: attributes.Schema(
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_('A map containing all headers for the container.')
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),
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}
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default_client_name = 'swift'
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def physical_resource_name(self):
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name = self.properties.get(self.NAME)
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if name:
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return name
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return super(SwiftContainer, self).physical_resource_name()
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@staticmethod
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def _build_meta_headers(obj_type, meta_props):
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'''
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Returns a new dict where each key is prepended with:
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X-Container-Meta-
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'''
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if meta_props is None:
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return {}
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return dict(
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('X-' + obj_type.title() + '-Meta-' + k, v)
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for (k, v) in meta_props.items())
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def handle_create(self):
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"""Create a container."""
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container = self.physical_resource_name()
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container_headers = SwiftContainer._build_meta_headers(
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"container", self.properties[self.X_CONTAINER_META])
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account_headers = SwiftContainer._build_meta_headers(
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"account", self.properties[self.X_ACCOUNT_META])
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for key in (self.X_CONTAINER_READ, self.X_CONTAINER_WRITE):
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if self.properties.get(key) is not None:
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container_headers[key] = self.properties[key]
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LOG.debug('SwiftContainer create container %(container)s with '
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'container headers %(container_headers)s and '
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'account headers %(account_headers)s'
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% {'container': container,
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'account_headers': account_headers,
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'container_headers': container_headers})
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self.swift().put_container(container, container_headers)
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if account_headers:
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self.swift().post_account(account_headers)
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self.resource_id_set(container)
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def _get_objects(self):
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try:
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container, objects = self.swift().get_container(self.resource_id)
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except Exception as ex:
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self.client_plugin().ignore_not_found(ex)
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return None
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return objects
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def _deleter(self, obj=None):
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"""Delete the underlying container or an object inside it."""
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args = [self.resource_id]
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if obj:
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deleter = self.swift().delete_object
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args.append(obj['name'])
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else:
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deleter = self.swift().delete_container
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try:
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deleter(*args)
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except Exception as ex:
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self.client_plugin().ignore_not_found(ex)
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def handle_delete(self):
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if self.resource_id is None:
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return
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objects = self._get_objects()
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if objects:
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if self.properties[self.PURGE_ON_DELETE]:
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self._deleter(objects.pop()) # save first container refresh
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else:
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msg = _("Deleting non-empty container (%(id)s) "
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"when %(prop)s is False") % {
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'id': self.resource_id,
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'prop': self.PURGE_ON_DELETE}
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raise exception.ResourceActionNotSupported(action=msg)
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return objects
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def check_delete_complete(self, objects):
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if objects is None: # resource was not created or is gone already
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return True
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if objects: # an (empty) list from the first invocation
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objs = self._get_objects()
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if objs is None:
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return True # container is gone already
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if objs:
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self._deleter(objs.pop())
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if objs: # save one last _get_objects() API call
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return False
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self._deleter()
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return True
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def handle_check(self):
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self.swift().get_container(self.resource_id)
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def FnGetRefId(self):
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return six.text_type(self.resource_id)
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def _resolve_attribute(self, key):
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parsed = list(urlparse.urlparse(self.swift().url))
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if key == self.DOMAIN_NAME:
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return parsed[1].split(':')[0]
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elif key == self.WEBSITE_URL:
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return '%s://%s%s/%s' % (parsed[0], parsed[1], parsed[2],
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self.resource_id)
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elif key == self.ROOT_URL:
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return '%s://%s%s' % (parsed[0], parsed[1], parsed[2])
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elif self.resource_id and key in (
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self.OBJECT_COUNT, self.BYTES_USED, self.HEAD_CONTAINER):
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try:
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headers = self.swift().head_container(self.resource_id)
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except Exception as ex:
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if self.client_plugin().is_client_exception(ex):
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LOG.warn(_LW("Head container failed: %s"), ex)
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return None
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raise
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else:
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if key == self.OBJECT_COUNT:
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return headers['x-container-object-count']
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elif key == self.BYTES_USED:
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return headers['x-container-bytes-used']
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elif key == self.HEAD_CONTAINER:
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return headers
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def resource_mapping():
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return {
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'OS::Swift::Container': SwiftContainer,
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}
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