Git LFS setup in jenkins

Question

I have an issue with git LFS use in Jenkins. What I am doing now is that

1. I am building a war from maven through Jenkins that war contains a jar file
2. through Git LFS we have converted that jar file into a pointer file. But during checkout from Jenkins that jar is not converting into its original size rather it is included in the war as a pointer.

We have used git plugin and git-client plugin with version 3.3.0 and 2.4.2 respectively in Jenkins.

What is happening:

A.war -> a.jar(whose original size is 1234 kb but it's coming 3 kb (which is the size of pointer file)

so my questions are:

1. how to use git LFS in the Jenkins?
2. is there any separate Git Lfs plugin for Jenkins?
3. How should the file convert to its original size during checkout when one use Git LfS?

Answer 1

This can be done using the regular Git+Plugin for Jenkins (version 3.1.0 onwards).

If you are using Jenkins Pipelines (i.e. with a Jenkinsfile in the root of your repo), the key thing is to include the extension [$class: 'GitLFSPull'] in your checkout() call. Here is an (edited) example taken from one of our repos:

checkout([  $class: 'GitSCM', 
    branches: [[name: 'refs/heads/'+env.BRANCH_NAME]],
        doGenerateSubmoduleConfigurations: false,
        extensions: [
            [$class: 'GitLFSPull'],
            [$class: 'CheckoutOption', timeout: 20],
            [$class: 'CloneOption',
                    depth: 0,
                    noTags: false,
                    reference: '/other/optional/local/reference/clone',
                    shallow: false,
                    timeout: 120]
        ],
        submoduleCfg: [],
        userRemoteConfigs: [
            [credentialsId: 'foobar',
            url: 'https://github.com/foo/bar.git']
        ]
    ])

Using the Snippet Generator it is possible to generate this code, by selecting "Git LFS pull after checkout" from the "Additional Behaviours" menu. See screenshot here