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Deprecation Notice

Starlark configuration support is natively available in Drone; use of this extension is no longer required. See https://docs.drone.io/server/reference/drone-starlark-enabled/


A conversion plugin that provides optional support for generating pipeline configuration files via Starlark scripting. Please note this project requires Drone server version 1.4 or higher.

Questions and Support:
https://discourse.drone.io

Bug Tracker:
https://discourse.drone.io/c/bugs

Features and Roadmap:
https://trello.com/b/ttae5E5o/drone

Installation

Create a shared secret:

$ openssl rand -hex 16
bea26a2221fd8090ea38720fc445eca6

Download and run the plugin:

$ docker run -d \
  --publish=3000:3000 \
  --env=DRONE_DEBUG=true \
  --env=DRONE_SECRET=bea26a2221fd8090ea38720fc445eca6 \
  --restart=always \
  --name=starlark drone/drone-convert-starlark

Update your Drone server configuration to include the plugin address and the shared secret.

DRONE_CONVERT_PLUGIN_ENDPOINT=http://1.2.3.4:3000
DRONE_CONVERT_PLUGIN_SECRET=bea26a2221fd8090ea38720fc445eca6

External loads/imports (optional)

Starlark/Bazel has support for loading extensions (modules). This is useful for cases where you'd like to share re-usable logic. drone-convert-starlark supports the ability to define extension repositories that pipelines can load extensions from.

For example:

# Relative load.
load("@test//:steps.star", "example_step")

# Absolute load.
load("@test//subpackage:pipelines.star", "example_pipeline")

def main(ctx):
    return example_pipeline("sample", steps = example_step())

In this case, test is the repo name. The first load imports an extension named steps_extension.star and extracts the example_step symbol for use in our Drone pipeline. The second example drills into the subpackage directory within the test repo to load an extension called pipelines.star, then extracts a symbol named example_pipeline.

To make this work for your own pipelines, you'll need to set an DRONE_STARLARK_REPO_PATHS environment variable, with the value being a comma-separated list of repoName:repoPath pairs. For example:

DRONE_STARLARK_REPO_PATHS=test:/var/lib/drone/starlark/test,othertest:/var/lib/drone/starlark/othertest

After setting the above, the converter will output the defined repos during startup.

_Note: This will only allow pipelines to load from the remote repos you define. A build will not be able to load() files in the same repo as the pipeline (.drone.star).

Testing

You can test the extension using the command line utility. Provide the command line utility with the conversion extension endpoint and secret.

$ export DRONE_CONVERT_ENDPOINT=http://1.2.3.4:3000
$ export DRONE_CONVERT_SECRET=bea26a2221fd8090ea38720fc445eca6

Use the command line utility to convert the Starlark script:

$ drone plugins convert path/to/.drone.star

About

DEPRECATED: native Starlark support was added to Drone core. This extension is no longer required and has been deprecated.

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