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.. This work is licensed under a Creative Commons Attribution 4.0 International License.
.. http://creativecommons.org/licenses/by/4.0
.. Copyright (C) 2021 Nordix Foundation, Pantheon.tech
.. _architecture:
CPS Architecture
################
.. toctree::
:maxdepth: 1
High Level Component Definition and Architectural Relationships
===============================================================
The Configuration Persistence Service (CPS) provides storage for run-time configuration and operational
parameters that need to be used by ONAP.
CPS is no longer a stand alone component and is released along with and the NCMP-DMI-Plugin.
Project page describing eventual scope and ambition is here:
`Configuration Persistence Service Project <https://wiki.onap.org/display/DW/Configuration+Persistence+Service+Project>`_
This page reflects the state for the latest release.
.. image:: _static/cps-r13-arch-diagram.png
API definitions
===============
Configuration Persistence Service provides the following interfaces.
.. list-table::
:header-rows: 1
* - Interface name
- Interface definition
- Interface capabilities
- Protocol
* - CPS-E-01
- Administrative Data Management
- - create dataspace
- create/delete schema set
- create/delete anchor
- REST
* - CPS-E-02
- Generic Data Access
- - create data node
- read data node by xpath with or without descendants
- update data node by xpath with or without descendants
- REST
* - CPS-E-03
- Generic Data Search
- - query data nodes by xpath prefix and attribute value
- REST
* - CPS-E-04
- Change Notification
- - Kafka is used as the event messaging system
- running instance is supplied independently from any Kafka instance deployed from ONAP
- published events contain Timestamp, Dataspace, Schema set, Anchor and JSON Data Payload
- Kafka
* - CPS-E-05
- xNF Data Access
- - read xNF data
- query xNF data
- REST
* - CPS-E-07
- Admin
- - logging levels and configuration
- monitoring
- health including liveliness state and readiness state
- metrics through Prometheus
- Various
The CPS Basic Concepts are described in :doc:`modeling`.
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