Code for blog post: Using SSH to push changes to external repository

gitremote.properties

useSSH=true

ssh-changes.java

//common push configuration
final PushCommand pushCommand = git.push() <1>
        .setRefSpecs(new RefSpec(ref + ":" + ref))
        .setRemote(remoteURL);
//check if ssh should used
if (properties.getUseSSH()) {  <2>
    // setup of ssh transport config
    pushCommand.setTransportConfigCallback(transport -> { <3>
        final SshTransport sshTransport = (SshTransport) transport;
        sshTransport.setSshSessionFactory(new JschConfigSessionFactory() {
            @Override
            protected void configure(OpenSshConfig.Host host, Session session) {
            }
        });
    });
} else {
    // if not ssh, it requires credentials
    pushCommand.setCredentialsProvider(integration.getCredentialsProvider());  <4>
}

// push changes to the remote repository
pushCommand.call(); <5>