Contribute flavors or components

Creating your custom stack component solutions.

Before you can start contributing, it is important to know that the stack component deploy CLI also makes use of the stack recipes (specifically, the modular stack recipes) in the background. Thus, contributing a new deployment option for both the deployment methods that we have seen, involves making a contribution to the base recipe.

You can refer to the CONTRIBUTING.md on the mlstacks repo to get an overview of how all recipes are designed in general but here are instructions for contributing to the modular recipes specifically.

Adding new MLOps tools

• Clone the mlstacks repo and create a branch off develop.

• Every file inside the modular recipes represents a tool and all code pertaining to the deployment of it resides there. Create a new file with a name that reflects what would be deployed.

• Populate this file with all the terraform code that is relevant to the component. Make sure any dependencies are also included in the same file.

• Add any local values that you might need here to the locals.tf file.

• If you want to enable users to set any configuration parameters through the CLI, add those variables to the variables.tf file. You can take a look at existing variables like mlflow_bucket to get an idea of how to do this.

• Now, add a variable that allows the user to enable this service, to the variables.tf file. The format for the name is enable_<STACK_COMPONENT>_<FLAVOR>

• You also need to populate the outputs.tf file with information that a stack component registration for your new component might need. This is used by the stack component deploy CLI.

• Add a block to the output_file.tf file that corresponds to your component. This is the file that gets generated on a successful stack deploy event and can be imported as a ZenML stack.

• Finally, contribute a PR back to develop! 🥳

Once merged, this should allow other people to use your new component while deploying through the zenml stack deploy flow. To enable integration with the stack component deploy CLI, you need to also contribute to the zenml-io/zenml repo.

Enabling the stack component deploy CLI

To enable the stack component deploy CLI to work with your new component, you need to add a new flag to the deploy_stack_component_command in the src/zenml/cli/stack_components.py file.

From the mlstacks side, this will also require an update to the validation logic inside the mlstacks repository, starting with updating enums and constants in the base of the src/mlstacks directory.

If you have any further questions or need help navigating changes that are required, please do reach out to us on Slack! Happy contributing! 🥰