gradle-git-publish

NOTE: As of 3.0.1, gradle-git-publish is published to Maven Central

Getting Help or Contributing

IMPORANT: I consider this plugin feature complete and don't spend a lot of time on maintenance due to other time commitments. While, I will eventually get to issues or PRs raised, do not expect a timely response. I'm not trying to be rude or dismissive, I only get back to this project periodically (on the order of months, in many cases). Please set your expectations appropriately as you file issues or open PRs.

Please use the repo's issues for all questions, bug reports, and feature requests.

Why do you care?

Git is immensely popular and being able to publish to it as part of a build process can be very valuable, for example to publish a blog or project documentation to GitHub Pages.

What is it?

gradle-git-publish is a Gradle plugin, org.ajoberstar.git-publish, which publishes files to a remote Git repository's branch.

See Grgit for details on the Git library used underneath, including configuration for authentication.

Usage

See the Release Notes for updates on changes and compatibility with Java and Gradle versions.

Applying the Plugin

plugins {
    id 'org.ajoberstar.git-publish' version '<version>'
}

Configuration

NOTE: In general, there are no default values here. The main exception is that the repoUri and referenceRepoUri will be automatically set if you use the org.ajoberstar.grgit plugin to your project's origin repo URI.

gitPublish {
    // where to publish to (repo must exist)
    repoUri = 'git@github.com:ajoberstar/test-repo.git'
    // (or 'https://github.com/ajoberstar/test-repo.git', depending on authentication)

    // where to fetch from prior to fetching from the remote (i.e. a local repo to save time)
    referenceRepoUri = 'file:///home/human/projects/test-repo/'

    // branch will be created if it doesn't exist
    branch = 'gh-pages'
  
    // if set, a shallow clone will be performed instead of pulling all history
    fetchDepth = null

    // generally, you don't need to touch this
    repoDir = file("$buildDir/somewhereelse") // defaults to $buildDir/gitPublish

    // what to publish, this is a standard CopySpec
    contents {
        from 'src/pages'
        from(javadoc) {
            into 'api'
        }
    }

    // what to keep in the existing branch (include=keep)
    preserve {
        include '1.0.0/**'
        exclude '1.0.0/temp.txt'
    }

    // message used when committing changes
    commitMessage = 'Publishing a new page' // defaults to 'Generated by gradle-git-publish'
    
    // for signing commits, omit to use the default from your gitconfig
    sign = false
}

As of v4.1.0, you can now configure multiple publications (e.g. to target different repositories or branches).

gitPublish {
    commitMessage = 'My favorite commit message' // configures the main publication

    publications {
        // main
        main {
            branch = 'great-branch' // alternatively can configure at the top-level of the gitPublish block
            // ... any other config from the gitPublish block ...
        }

        other {
            branch = 'some-branch' // may need branch.set('some-branch')
            // ... any other config from the gitPublish block ...
        }
    }
}

Tasks and Execution

Generally, you'll just run gitPublishPush, but there is a series of four tasks that happen in order.

• gitPublishReset - Clones/updates the working repo to the latest commit on the repoUri branch head. All files not included by the preserve filters will be deleted and staged.
• gitPublishCopy - Copies any files defined in the contents CopySpec into the working repo.
• gitPublishCommit - Commits all changes to the working repo.
• gitPublishPush - If changes were committed, pushed them to the repoUri.

Each publication gets its own set of tasks, with a general gitPublishPushAll if you want to push all publications to their respective repos/branches.

As is common in Gradle, the main publication is not indicated in task names (e.g. for main gitPublishCommit and for other gitPublishOtherCommit).

Avoiding Extra Copy

If you are generating a large site, you may want to directly generate it into the working repo to save an extra copy step. You can do this with task dependencies and referring to the repoDir.

jbakeTask {
    outputDir gitPublish.repoDir
    dependsOn gitPublishReset
}

gitPublishCommit.dependsOn jbakeTask

Migrating from org.ajoberstar.github-pages

The following table should help translate settings you used in org.ajoberstar.github-pages to this plugin's format. Additionally reference the Configuration section above for more information on the current feature set.

org.ajoberstar.github-pages	org.ajoberstar.git-publish	Comment
repoUri	repoUri	Used to allow any Object (which would be lazily unpacked to a String). Now requires a String.
targetBranch	branch	The old plugin defaulted to gh-pages, the new one has no default. This must be a String.
workingPath	repoDir	Used to allow any Object and called file() on it for you. Now expects a File.
pages	contents	Just a name change.
deleteExistingFiles	preserve	If previously true (the default), do nothing. If previously false, preserve { include '**/*' }
commitMessage	commitMessage	Just copy from the old value.
credentials	env variable or system prop	GRGIT_USER environment variable or org.ajoberstar.grgit.auth.username system property.

Use the gitPublishPush task as replacement for the publishGhPages task.

Finding versions

Newest versions are on Maven Central

As of 3.0.1, gradle-git-publish is published to Maven Central.

This project is no longer directly published to the Gradle Plugin Portal, but since the portal proxies Maven Central you can still access it through the portal. The only side effect is that the portal will no longer list the latest version. Use this repo or search.maven.org to find the latest version.

Old versions from Bintray/JCenter

This project was previously uploaded to JCenter, which was deprecated in 2021.

In the event that JCenter is unavailable and acess to past versions is needed, I've made a Maven repo available in bintray-backup. Add the following to your repositories to use it.

maven {
  name = 'ajoberstar-backup'
  url = 'https://ajoberstar.org/bintray-backup/'
}

Made possible by lacasseio/bintray-helper in case you have a similar need to pull your old Bintray artifacts.

Acknowledgements

Thanks to all of the contributors.

I also want to acknowledge Peter Ledbrook for the initial idea and code for the plugin.