On Tue, Feb 12, 2019 at 18:32 Mike Jumper wrote:
> On Mon, Feb 11, 2019 at 3:33 PM Nick Couchman wrote:
>
> > After a question on the mailing list recently I decided to try to write
> an
> > extension that starts a Docker container upon login and sets up a
> > connection to the container automatically. I decided to use the
> > docker-java client:
> >
> > https://github.com/docker-java/docker-java
> >
> > I've run into an interesting issue with this. If I include the
> dependency
> > normally - without specifying a scope - it pulls in between 15 and 20 MB
> > (!) of dependencies - the overall size of the target file is between 18
> and
> > 20 MB. Interestingly Guacamole fails to load this extension with an
> error
> > that the Authentication Provider class cannot be found. It's almost as
> if
> > there is a size limitation, either overall file size in bytes, or number
> of
> > entries within the JAR, that the load chokes on. I cannot find anywhere
> in
> > the Guacamole code where this is specified, so I'm not sure where the
> > limitation is, or if that's really the issue, but it seems that way.
> >
>
> Might the .jar be signed?
>
> Does the documentation for the docker-java client indicate that some other
> dependencies must be manually added?
>
Yeah, I bet that is it. In fact, I remember seeing Bouncycastle get pulled
in by the Docker client as a dependency, and I seem to remember hitting an
issue with that one when building the RADIUS module. I'll have to dig up
my notes for what to do - seems like there is a specific file that has to
be excluded, and I'll be the pom.xml from the radius authentication
extension has it in there.
I did figure out how to build the JAR for the Docker client with all
dependencies and placed that in the lib directory, and that works, as well.
-Nick
