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Releasing workflow

Deploying the documentation website

Official Workflow documentation lives at The website content consists of three parts:

  1. Markdown documentation: Lives in the docs/ folder, and consists of a set of hand-written Markdown files that document high-level concepts. The static site generator mkdocs (with Material theming) is used to convert the Markdown to static, styled HTML.
  2. Kotlin API reference: Kdoc embedded in Kotlin source files is converted to GitHub-flavored Markdown by Dokka and then included in the statically-generated website.
  3. Swift API reference: Markup comments from Swift files are converted Markdown by Sourcedocs and then included in the statically-generated website.

Note: The documentation site is automatically built and deployed whenever a version tag is pushed. You only need these steps if you want to work on the site locally.

Setting up the site generators

If you’ve already done this, you can skip to Deploying the website to production below.

Kotlin: Dokka

Dokka runs as a Gradle plugin, so you need to be able to build the Kotlin source with Gradle, but that’s it. To generate the docs manually, run:

cd kotlin
./gradlew dokka

Swift: Sourcedocs

Sourcedocs generates a Markdown site from Swift files. You need Ruby, rubygems, bundler (2.x), Xcode 10.2+, CocoaPods, and of course Sourcedocs itself, to run it. Assuming you’ve already got Xcode, Ruby, and rubygems set up, install the rest of the dependencies:

gem install bundler cocoapods
brew install sourcedocs

You will also need a checkout of the Swift repo:

git clone
cd workflow-swift

Then generate an Xcode project before running Sourcedocs:

cd Samples/SampleApp/
bundle exec pod install
# If this is your first time running CocoaPods, that will fail and you'll need to run this instead:
#bundle exec pod install --repo-update

You can manually generate the docs to verify everything is working correctly by running:

#cd Samples/SampleApp/
sourcedocs generate -- -scheme Workflow -workspace SampleApp.xcworkspace
sourcedocs generate -- -scheme WorkflowUI -workspace SampleApp.xcworkspace
sourcedocs generate -- -scheme WorkflowTesting -workspace SampleApp.xcworkspace

Note that currently sourcedocs only supports Xcode 10, if you run it with Xcode 11 you might see an error about Catalyst and only empty READMEs will get generated.


Mkdocs is written in Python, so you’ll need Python 3 and pip in order to run it. Assuming those are set up, run:

pip install -r requirements.txt

Generate the site manually with:

mkdocs build

While you’re working on the documentation files, you can run the site locally with:

mkdocs serve

Deploying the website to production

Note: The documentation site is automatically built and deployed by a Github Workflow whenever a version tag is pushed. You only need these steps if you want to publish the site manually.

Before deploying the website for real, you need to export our Google Analytics key in an environment variable so that it will get added to the HTML. Get the key from one of the project maintainers, then add the following to your .bashrc and re-source it:


Now you’re ready to publish the site! Just choose a tag or SHA to deploy from, and run:

# For example:
#./ v0.18.0

This will clone the repo to a temporary directory, checkout the right SHA, build Kotlin and Swift API docs, generate HTML, and push the newly-generated content to the gh-pages branch on GitHub.

Validating Markdown

Since all of our high-level documentation is written in Markdown, we run a linter in CI to ensure we use consistent formatting. Lint errors will fail your PR builds, so to run locally, install markdownlint:

gem install mdl

Run the linter using the


Rules can be configured by editing .markdownlint.rb.

Kotlin Notes


To build and install the current version to your local Maven repository (~/.m2), run:

./gradlew clean installArchives



In order to deploy artifacts to a Maven repository, you’ll need to set 4 properties in your private Gradle properties file (~/.gradle/

RELEASE_REPOSITORY_URL=<url of release repository>
SNAPSHOT_REPOSITORY_URL=<url of snapshot repository

Snapshot Releases

Double-check that correctly contains the -SNAPSHOT suffix, then upload snapshot artifacts to Sonatype just like you would for a production release:

./gradlew clean build && ./gradlew uploadArchives --no-parallel --no-daemon

You can verify the artifacts are available by visiting