This is a new feature for Archiva 1.1. The main advantage of virtual repositories (or repository groups) is that you only need to specify one URL instead of multiple repository URLs if you are using more than 1 proxy repository.
For example, you have the following configuration in your settings.xml:
<settings> ... <profiles> <profile> <id>Repository Proxy</id> <activation> <activeByDefault>true</activeByDefault> </activation> <repositories> <repository> <id>internal.releases</id> <url>http://localhost:8080/archiva/repository/internal.releases/</url> <releases> <enabled>true</enabled> </releases> <snapshots> <enabled>false</enabled> </snapshots> </repository> <repository> <id>third.party.repo</id> <url>http://localhost:8080/archiva/repository/third.party.repo/</url> <releases> <enabled>true</enabled> </releases> <snapshots> <enabled>false</enabled> </snapshots> </repository> <repository> <id>snapshots</id> <url>http://localhost:8080/archiva/repository/snapshots/</url> <releases> <enabled>false</enabled> </releases> <snapshots> <enabled>true</enabled> </snapshots> </repository> </repositories> </profile> ... </profiles> ... </settings>
If you have a virtual repository configured in Archiva, you only need to configure this in your settings.xml:
<settings> ... <profiles> <profile> <id>Repository Proxy</id> <activation> <activeByDefault>true</activeByDefault> </activation> <repositories> <repository> <id>internal.releases</id> <url>http://localhost:8080/archiva/repository/[repository_group_id]/</url> </repository> </repositories> </profile> ... </profiles> ... </settings>
And you'll still be able to get all the artifacts that you need. See Configuring Virtual Repositories section for the steps on how to setup a virtual repo in Archiva.
When Archiva receives a request with a virtual repo (or repo group) URL, Archiva would look for the requested artifact from the repositories under that group. It would only check the repositories the user has permission to access (meaning only those repositories which the user has an Obeserver role for). The first resource found for the requested artifact would be returned.
Below are the steps for setting up the virtual repositories:
Webdav Browse for a virtual repository is a read-only view. It displays the merged contents of all the repositories under that repository group. Just type the url of the virtual repository in your browser in order to view its contents. User will be asked to authenticate if the 'guest' account is not enabled for the repositories. Only those repositories which the user has permission to access will be shown.