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Table of Contents
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Overview

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This release of MUSIC provides a shared service with recipes that individual ONAP components and micro-service can use for state replication, consistency management and state ownership across geo-distributed sites. This is a crucial component enabling ONAP components to achieve geo-redundancy (platform-maturity resiliency level 3). 

Use Cases

  • Targeted goal for R2: OOF-Homing Optimizer (HAS) uses MUSIC for its state persistence (as a queue) and as a highly available distributed messaging service. 
  • Stretch goal for R2: ONAP Portal will use MUSIC to store its http session state across sites in a persistent manner.  

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MUSIC service that can serve the geo-redundancy needs of ONAP HAS and ONAP Portal while satisfying the platform maturity requirements for the Beijing release.  

Functionalities

Since we currently do not have the LF tool chain, we are just attaching the excel containing the epics and user stories. 

View file
nameMUSIC_functionality.xlsx
height250

For Beijing this will be run as internal services to both Portal and OOF. 

Functionalities

Epics

Jira Legacy
serverSystem Jira
columnskey,summary,type,created,updated,due,assignee,reporter,priority,status,resolution
maximumIssues20
jqlQueryproject=music and issuetype in (epic)
serverId4733707d-2057-3a0f-ae5e-4fd8aff50176

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Jira Legacy
serverSystem Jira
columnskey,summary,type,created,updated,due,assignee,reporter,priority,status,resolution
maximumIssues20
jqlQueryproject=sanbox music and issuetype in (story)
serverId4733707d-2057-3a0f-ae5e-4fd8aff50176

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In the long term we hope that MUSIC will be common, shared state-management system for all ONAP components and micro-services to manage geo-redundancy. For example, we envisage the use of MUSIC for multi-site state management in SO (to store Camunda state across sites), <SDN-C, AppC> (to store ODL related state across sites) , A&AI (to store its graph data) and most other ONAP components that need to manage state across sites. Further, we envision that these services will use the MUSIC recipes  (mdbc, prom, musicCAS, musicQ) to achieve the goal of a multi-site active-active federated ONAP solution. 

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Deliverable NameDeliverable Description
Cource Source code and REST API

The entire source code for the MUSIC service and

the corresponding REST API to access it.

Compilation scripts

Script to generate the MUSIC war file that

can be deployed in the Apache Tomcat webserver

Installation guide

Document that describes how MUSIC can be installed

in containers

Tool description

Complete description of the inner workings of MUSIC and

how it performs state management

Basic BenchmarksBasic performance benchmarks for the MUSIC operations
API documentationREST API documentation in Swagger
Test CasesJunit test cases covering sufficient parts of MUSIC code

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AreaActual LevelTargeted Level for current ReleaseHow, EvidencesComments
Performance11

This file shows basic performance benchmarks performed for MUSIC on a 10 node cluster.

  • 0 -- none
  • 1 – baseline performance criteria identified and measured
  • 2 & 3 – performance improvement plans created & implemented
Stability11As shown in this file, our experimental runs were all over 1 hour.
  • 0 – none
  • 1 – 72 hours component level soak w/random transactions
  • 2 – 72 hours platform level soak w/random transactions
  • 3 – 6 months track record of reduced defect rate
Resiliency

12

2

Within each container we have scripts that will detect failure of MUSIC and restart it. However, if the entire container fails, we will need OOM to bring it up.

  • 0 – none
  • 1 – manual failure and recovery (< 30 minutes)
  • 2 – automated detection and recovery (single site)
  • 3 – automated detection and recovery (geo redundancy)
Security

2

2

  • SSL Communication’s between Cassandra Cluster Nodes.
  • REST over HTTPS with AAF for Authentication.
  • 0 – none
  • 1 – CII Passing badge + 50% Test Coverage
  • 2 – CII Silver badge; internal communication encrypted; role-based access control and authorization for all calls
  • 3 – CII Gold
Scalability

01

1

Among the MUSIC components [tomcat, zookeeper, cassandra], new MUSIC nodes with the tomcat and cassandra can be added seamlessly to scale the cluster (MUSIC itself is state-less). However, our current version of Zookeeper (3.4.0) does not support dynamic reconfiguration. Will move to Zookeeper 3.5.0 that supports dynamic reconfiguration and test MUSIC sclability. We will also need to work with OOM support to spin new containers on demand for the scalability needsZookeeper nodes ideally should not be scaled since there are major performance implications. However, this can be done with reconfiguration.


  • 0 – no ability to scale
  • 1 – single site horizontal scaling
  • 2 – geographic scaling
  • 3 – scaling across multiple ONAP instances
Manageability

1

1

Using EELF with logback as the logging provider.

  • 1 – single logging system across components; instantiation in < 1 hour
  • 2 – ability to upgrade a single component; tracing across components; externalized configuration management
Usability

1

1

Use SWAGGER for the REST API and Installation Docs. Will need to enhance and update the documentation.

  • 1 – user guide; deployment documentation; API documentation
  • 2 – UI consistency; usability testing; tutorial documentation

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None identified so far. 

Resources

Udated the Resources Committed to the Release centralized page.

  • Release Milestone

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