Using Karaf features, OpenDX makes is super simple to add new functionality. This article will take you through the steps required to add a feature repo and select features for install. Before starting you may want to read the Karaf Features page for some background.
The first step is to point your DDF install at the Codice Nexus Maven repo. To do this locate and edit $DDF_HOME/etc/org.ops4j.pax.url.mvn.cfg.
An Example org.ops4j.pax.url.mvn.cfg is shown below.
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#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
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# DDF Changes: Disabled internet repositories
#
# If set to true, the following property will not allow any certificate to be used
# when accessing maven repositories through SSL
#
#org.ops4j.pax.url.mvn.certificateCheck=
#
# Path to the local maven settings file.
# The repositories defined in this file will be automatically added to the list
# of default repositories if the 'org.ops4j.pax.url.mvn.repositories' property
# below is not set.
# The following locations are checked for the existence of the settings.xml file
# * 1. looks for the specified url
# * 2. if not found looks for ${user.home}/.m2/settings.xml
# * 3. if not found looks for ${maven.home}/conf/settings.xml
# * 4. if not found looks for ${M2_HOME}/conf/settings.xml
#
#org.ops4j.pax.url.mvn.settings=file:${karaf.home}/etc/templates/settings.xml
#
# Path to the local maven repository which is used to avoid downloading
# artifacts when they already exist locally.
# The value of this property will be extracted from the settings.xml file
# above, or defaulted to:
# System.getProperty( "user.home" ) + "/.m2/repository"
#
#org.ops4j.pax.url.mvn.localRepository=
#
# Default this to false. It's just weird to use undocumented repos
#
org.ops4j.pax.url.mvn.useFallbackRepositories=false
#
# Uncomment if you are behind a web proxy. PAX URL will use the proxy settings
# from the Maven conf/settings.xml file
#
# org.ops4j.pax.url.mvn.proxySupport=true
#
# Disable aether support by default. This ensure that the defaultRepositories
# below will be used
#
org.ops4j.pax.url.mvn.disableAether=true
#
# Comma separated list of repositories scanned when resolving an artifact.
# Those repositories will be checked before iterating through the
# below list of repositories and even before the local repository
# A repository url can be appended with zero or more of the following flags:
# @snapshots : the repository contains snaphots
# @noreleases : the repository does not contain any released artifacts
#
# The following property value will add the system folder as a repo.
#
org.ops4j.pax.url.mvn.defaultRepositories=file:${karaf.home}/${karaf.default.repository}@snapshots
#
# Comma separated list of repositories scanned when resolving an artifact.
# The default list includes the following repositories:
# http://repo1.maven.org/maven2
# http://repository.ops4j.org/maven2
# To add repositories to the default ones, prepend '+' to the list of repositories
# to add.
# A repository url can be appended with zero or more of the following flags:
# @snapshots : the repository contains snaphots
# @noreleases : the repository does not contain any released artifacts
#
org.ops4j.pax.url.mvn.repositories=https://tools.codice.org/artifacts/content/repositories/releases