# @jameslnewell/buildkite-pipelines

Generate Buildkite pipelines from code.

![CI/CD](https://github.com/jameslnewell/buildkite-pipelines/actions/workflows/workflow.yml/badge.svg)

## Installation

NPM:

```bash
npm install @jameslnewell/buildkite-pipelines
```

Yarn:

```bash
yarn add --dev @jameslnewell/buildkite-pipelines
```

## Usage

Define your pipeline in code.

`./.buildkite/pipeline.js`

```ts
const {Pipeline, CommandStep} = require('@jameslnewell/buildkite-pipelines');

module.exports = new Pipeline().addStep(
  new CommandStep().setLabel('👋 Greeting').addCommand('echo "Hello World!"'),
);
```

Generate and upload your pipeline in a Buildkite step.

`./.buildkite/pipeline.yml`

```yaml
steps:
  - commands:
      - buildkite-pipelines ./.buildkite/pipeline.js | buildkite-agent pipeline upload
    plugins:
      - docker#v3.11.0:
          image: jameslnewell/buildkite-pipelines
```

### Transpiling Typescript

Define your pipeline in code.

`./.buildkite/pipeline.ts`

```ts
import {Pipeline, CommandStep} from '@jameslnewell/buildkite-pipelines';

export default new Pipeline().addStep(
  new CommandStep().setLabel('👋 Greeting').addCommand('echo "Hello World!"'),
);
```

Generate and upload your pipeline in a Buildkite step.

`./.buildkite/pipeline.yml`

```yaml
steps:
  - commands:
      - yarn global add ts-node
      - buildkite-pipelines -r ts-node/register ./.buildkite/pipeline.ts | buildkite-agent pipeline upload
    plugins:
      - docker#v3.11.0:
          image: jameslnewell/buildkite-pipelines
```

## Why?

This library is a very thin wrapper around [Buildkite's `yaml` syntax for defining a pipeline](https://buildkite.com/docs/pipelines/defining-steps). As such the value of this library is unlikely to be realised for simple one-file pipelines.

Consider using this library when:

- you're dynamically generating the pipeline and you require a programming language
- your pipeline is split across multiple `yaml` files and you're unable to use `yaml` anchors and aliases for composition across them
- you can't possibly live without typings

## Related projects

- https://hasura.io/blog/what-we-learnt-by-migrating-from-circleci-to-buildkite/
- https://docs.sourcegraph.com/dev/background-information/ci/development

### Development

1. Setup a pipeline - use the command for setting up a docker agent [here](https://buildkite.com/organizations/jameslnewell/agents?return_to_pipeline=buildkite-pipelines&welcome=true#setup-docker)