"Fossies" - the Fresh Open Source Software Archive  

Source code changes of the file "doc/source/contributor/list-truncation.rst" between
keystone-17.0.0.tar.gz and keystone-18.0.0.tar.gz

About: OpenStack Keystone (Core Service: Identity) provides an authentication and authorization service for other OpenStack services. Provides a catalog of endpoints for all OpenStack services.
The "Victoria" series (latest release).

list-truncation.rst  (keystone-17.0.0):list-truncation.rst  (keystone-18.0.0)
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
License for the specific language governing permissions and limitations License for the specific language governing permissions and limitations
under the License. under the License.
================================= =================================
Entity list truncation by drivers Entity list truncation by drivers
================================= =================================
Keystone supports the ability for a deployment to restrict the number of Keystone supports the ability for a deployment to restrict the number of
entries returned from ``list_{entity}`` methods, typically to prevent poorly entries returned from list operations, typically to prevent poorly
formed searches (e.g. without sufficient filters) from becoming a performance formed searches (e.g. without sufficient filters) from becoming a performance
issue. issue.
These limits are set in the configuration file, either for a specific driver or These limits are set in the configuration file, either for a specific driver or
across all drivers. These limits are read at the Manager level and passed into across all drivers. A global ``list_limit`` set in ``[DEFAULT]`` section of
individual drivers as part of the Hints list object. A driver should try and keystone is considered in case no limit is set for specific driver. These
honor any such limit if possible, but if it is unable to do so then it may limits are read at the Manager level and passed into individual drivers as part
ignore it (and the truncation of the returned list of entities will happen at of the Hints list object. A driver should try and honor any such limit if possib
the controller level). le,
but if it is unable to do so then it may ignore it (and the truncation of the
returned list of entities will happen at the API level by ``wrap_collection`` me
thod).
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