JGit throws ClassCastException in TransportConfigCallback

Question

I am trying to use JGit. I tried following http://www.codeaffine.com/2014/12/09/jgit-authentication/ and the following block of the code throws a ClassCastException

remoteRepository.setTransportConfigCallback(new TransportConfigCallback() {
    @Override
    public void configure(Transport transport) {
        SshTransport sshTransport = (SshTransport) transport;
        sshTransport.setSshSessionFactory(sshSessionFactory);
    }
});

Exception:

java.lang.ClassCastException: org.eclipse.jgit.transport.TransportHttp cannot be cast to org.eclipse.jgit.transport.SshTransport

What am I missing? I am using JGit version 4.10.0.201712302008-r.

can you show your import statements? You may have imported the wrong class — Dimuth Tharaka Menikgama, Feb 16 '18 at 05:38

Rüdiger Herrmann · Accepted Answer · 2019-07-13T20:03:36.137

2

The code is only meant to handle SSH connections. If you are connecting through other protocols, you need to adjust the code to be aware that transport can be something different than SshTransport.

For example:

command.setTransportConfigCallback(new TransportConfigCallback() {
  @Override
  public void configure(Transport transport) {
    if(transport instanceof SshTransport) {
      SshTransport sshTransport = (SshTransport) transport;
      sshTransport.setSshSessionFactory(sshSessionFactory);
    } else if(transport instanceof HttpTransport) {
      // configure HTTP protocol specifics
    }
  }
} );

edited Jul 13 '19 at 20:03

answered Feb 16 '18 at 09:18

Rüdiger Herrmann

20,512
11
62
79

Not sure why is the downvote , but the same code use to work and I am using ssh (ssh://git@ ...) . It also involves some debug efforts where I saw that the transport is coming as an HttpTransport (transport instanceof HttpTransport is true). – user2427771 Feb 16 '18 at 15:20

Dimuth Tharaka Menikgama · Answer 2 · 2018-02-16T10:48:08.817

0

when you set: cloneCommand.setURI("ssh://user@example.com/repo.git" ); Indicate the url with ssh protocol, the repo in github. Example - (ssh://git@github.com:githubtraining/hellogitworld.git)

Refer this https://github.com/allegro/axion-release-plugin/issues/101

edited Feb 16 '18 at 10:48

answered Feb 16 '18 at 05:46

Dimuth Tharaka Menikgama

122
1
9

thanks , I do not have enough reps to upvote ya , but the issue is that I did not notice I was setting http url instead of the ssh one in my test case – user2427771 Feb 16 '18 at 16:44

JGit throws ClassCastException in TransportConfigCallback

2 Answers2