Helm from Java, part 2

In the previous post, I outlined how microbean-helm produces the Java bindings for Helm, the Kubernetes package manager.  Specifically, it creates and packages up the gRPC Java code that describes the API surfaced by the Tiller server-side component of Helm (the thing that does the heavy lifting in the Helm ecosystem).

In the latest revision of the project, I’ve done some road grading to make it easier to work with the (cumbersome) gRPC API.  Here is how you connect to Tiller from Java and ask it for a particular release.  That is, we’re basically doing the Java equivalent of helm history someRelease:

Under the covers, this sets up a port forwarding connection to the first Pod in the cluster that is running a healthy instance of Tiller (hopefully there is exactly one) and establishes all the gRPC plumbing for you (which is not very straightforward).  As long as you ensure that (in this example) both the DefaultKubernetesClient and the Tiller object are closed, as is done in this example, you won’t leak resources.

Happy Helming from Java!

Advertisements

One thought on “Helm from Java, part 2

  1. Pingback: Helm from Java, Part 3 | Blame Laird

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s