SDN Controller Programming Guide

An example of an application consuming the Alert service is described at Posting Alerts on page

181 .

Configuration

The SDN controller presents configurable properties and allows the end user to modify

configurations via both the UI and REST API layers. The HP VAN SDN Controller uses the OSGi

Configuration Admin [23] [24] and MetaType [25] [26] services to present the configuration data.

For an application to provide configuration properties that are automatically presented by the SDN

controller, they must provide the MetaType information for the configurable properties. The

metatype information is contained in a “metatype.xml” file that must be present in the OSGI-

INF/metatype folder of the application bundle.

The necessary metatype.xml can be automatically generated via the use of the Maven SCR

annotations [27] and Maven SCR [28] plugin in a Maven pom.xml file for the application (See

Root POM File on page 108). The SCR annotations must be included as a dependency, and the

SCR plug-in is a build plugin.

Application pom.xml Example:

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns=http://maven.apache.org/POM/4.0.0

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0

http://maven.apache.org/maven-v4_0_0.xsd">

...

...

<groupId>org.apache.felix</groupId>

<artifactId>org.apache.felix.scr.annotations</artifactId>

</dependency>

</dependencies>

<build>

...

<groupId>org.apache.felix</groupId>

<artifactId>maven-scr-plugin</artifactId>

<id>generate-scr-srcdescriptor</id>

<goals>

</goals>

</execution>

</executions>