LambdaCD

• it's a continuous delivery pipeline, in code
• it's your own custom built Jenkins/Go/TeamCity/..., in clojure

Status

Getting started

• Make sure you have Leiningen and a recent version of JDK installed
• lein new lambdacd <NAME> will create a new pipeline-project
• cd <NAME>
• lein run downloads all dependencies and starts the server; the UI is then served on on http://localhost:8080
• your pipeline is defined in src/<NAME>/. Have a look around, change some steps or add some steps on your own
• For more details, check out the resources and related projects below

Example

;; buildsteps
(def some-repo "[email protected]:flosell/somerepo")

(defn wait-for-repo [_ ctx]
  (git/wait-for-git ctx some-repo "master"))

(defn ^{:display-type :container} with-repo [& steps]
  (git/with-git some-repo steps))

(defn run-tests [{cwd :cwd} ctx]
  (shell/bash ctx cwd
    "lein test"))

(defn compile-and-deploy [{cwd :cwd} ctx]
  (shell/bash ctx cwd
    "./buildscripts/compile-and-deploy.sh"))

;; the pipeline
(def pipeline
  `(
     (either
       wait-for-manual-trigger
       wait-for-repo)
     (with-repo
       run-tests
       compile-and-deploy)))

Screenshot

Chat

• #lambdacd on the clojurians slack
• #lambdacd on gitter

Resources

• Getting Started
• FAQ
• How to do ...
• Wiki Documentation
• Talk at ClojureD 2016 (Video)
• Detailed Tutorial: doc/walkthrough.md
• A complete LambdaCD infrastructure in code: https://github.com/flosell/devops-101-lambdacd
• Documented Sample-Code: example/clj/todopipeline
• Blog Post on LambdaCD at Otto including tutorial: http://dev.otto.de/2015/06/29/microservices-ci-with-lambdacd-microservices-and-continuous-integration-with-lambdacd-23/

Related projects

• lambda-ui: Opinionated alternative user-interface with improved usability
• lambdacd-git: Next generation of Git support for LambdaCD. Will replace the functionality in the core lambdacd.steps.git namespace in the future
• lambdacd-cctray: Support for cctray.xml to integrate LambdaCD with build monitoring tools such as nevergreen or CCMenu
• lambdacd-artifacts: Makes arbitrary build-artifacts (test-results, binaries, ...) available on LambdaCD
• lambdacd-junit: Makes JUnit test reports available in LambdaCD
• lambdacd-cron: A cron trigger for your LambdaCD
• lambdacd-mongodb: Alternative persistence backend for LambdaCD, saving the pipeline state into MongoDB instead of the filesystem
• machroput: LambdaCD-aware library simplifying deployments into a Mesos Cluster running Marathon or Chronos

Contribute

I'd love to hear from you! If you have a question, a bug report or feature request please reach out.

For details, refer to the contribution guide

Development

LambdaCD is built in Clojure and ClojureScript with Leiningen as a build-tool. The ./go script is your main entry-point that wraps all important development tasks. Call it without arguments to see all the options.

General Setup

• Call ./go setup to install necessary dependencies and build everything once.

Core Development

• Sources for the core of LambdaCD can be found in src/clj, tests in test/clj.
• Run tests with ./go test-clj
• To run a sample-pipeline (see example/clj), run ./go serve. You may have to run ./go serve-cljs occasionally to generate the frontend JS code from ClojureScript.
• If you want the example pipeline to be green (which is not necessary for all development), you first need to setup a mock-deployment environment on your machine (two VMs where we deploy a TodoMVC client and server):
  • install Vagrant
  • have github-access set up (you need to be able to clone with ssh)
  • ./go setupTodopipelineEnv starts up two VMs in vagrant where we deploy to and exports the ssh-config for them so that it can be used by the deployment scripts

Frontend Development

• The frontend is written in ClojureScript using Reagent and re-frame
• Frontend resources can be found in resources/public, ClojureScript code in src/cljs, tests in test/cljs
• Stylesheets are written in are in Less and can be found in src/less
• ClojureScript code needs to be compiled into JS before being useful
• In three terminals, run ./go serve to start an example pipeline (if you want it to be green, follow the environment setup above), ./go serve-cljs to start a ClojureScript REPL and automatic code-reloading using Figwheel and ./go serve-css to run the css autoprefixer watch
• Run ./go test-cljs to run frontend-tests or ./go test-cljs-auto to start autotest

License

Copyright © 2014 Florian Sellmayr

Distributed under the Apache License 2.0