Continuous Integration on Software Medical Device Projects, Part 3

Jenkins CI

For the purposes of this article, the focus will be on one specific continuous integration build tool, Jenkins CI. This is one of the more popular (open source) tools available. Jenkins CI (the continuation of a product formerly called Hudson) allows continuous integration builds in the following ways:

1.    It integrates with popular build tools (ant, maven, make) so that it can run the appropriate build scripts to compile, test and package within an environment that closely matches what will be the production environment.
2.    It integrates with version control tools, including Subversion, so that different projects can be set up depending on projection location within the trunk.
3.    It can be configured to trigger builds automatically by time and/or changeset. (i.e., if a new changeset is detected in the Subversion repository for the project, a new build is triggered.)
4.    It reports on build status. If the build is broken, it can be configured to alert individuals by email.

The above screenshot gives an example of what a main page for Jenkins CI (or any CI tool) may look like. It can be configured to allow logins at various levels and on a per-project basis. This main page lists all the projects that are currently active, along with a status (a few details about the build) and some configuration links on the side. These links may not be available to a general user.

Clicking any project (“job”) links to further details on the build history and status. This image provides us details on what the overview screen in the CI environment might look like, but it is at the detailed project level that we see the real benefit of packaging that can be performed by a well setup CI environment.

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