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README.md

mina-circle

Look ma' No more building assets on my web server!

A plugin for Mina to deploy pre-built artifacts from CircleCI.

Gem

Now supports CircleCI version 2.0 Workflows! If your CircleCI 2.0 build has only one job it likely does not use workflows. If you find that your builds do not use workflows stick with version 1.4.2 of this gem.

Why?

Modern web applications depend on a lot of tools to prepare their static assets. For varying reasons, having those tools installed on a production server (or, really, any publicly available server) is undesirable. It adds to the maintenance cost of the server, it increases the time it takes to complete a deployment, and some tools might even be a security risk. These issues can be mitigated to some extent by bundling up your application in private and pushing that artifact into the public. This gem is a first step in making that path happier.

Setup

Add mina and mina-circle to your Gemfile:

source 'http://rubygems.org'

gem 'mina'
gem 'mina-circle'

Once you have that, go to your CircleCI Account Page and create an API token (if you don't have one already). Create a new file named .mina-circle.yml in your home directory and add an entry for token:

token: your_circle_ci_token

If the plugin cannot find an API token the deploy will fail.

Mina Configuration

Once the gem is installed, require it into Mina's config/deploy.rb and set each configuration option. They are all required.

# config/deploy.rb
require 'mina-circle'

# Basic Mina requirements probably live here...

set :branch, ENV['branch'] || 'master' # Your specifc git branch to deploy
set :circleci_user, 'username' # Your Username with CircleCI
set :circleci_project, 'project_name' # Name by which CircleCI knows your project
set :circleci_artifact, 'artifact_example.tar.gz' # Name that you configured CircleCI to call your build archives
set :circleci_explode_command, 'tar -mzxf' # Command with options for decompressing the artifact archive
set :circleci_job_name, 'build' # Name of workflow job

# Other configuration probably lives here...

task :deploy => :environment do
  deploy do
    invoke 'circleci:deploy'
    launch do
      # mina-circle itself doesn't require any launch steps. Your particular
      # app might though.
    end
  end
end

CircleCI Configuration - circle.yml

Change name of the asset and build path. (gruntfile, gulp, etc)

# circle.yml
general:
  artifacts:
    - "~/artifact_example.tar.gz"

test:
  override:
    - cd static && npm install
    - ./static/node_modules/.bin/grunt ci --gruntfile static/Gruntfile.coffee
    - tar --exclude=".git" --exclude="node_modules" -czvf ~/artifact_example.tar.gz .

Running

To deploy you'll run mina deploy

To deploy a specific branch, run mina deploy branch=your_feature_branch

Continuous Deployment

For successful builds, CircleCI has an optional deployment step which it can run after it builds your artifacts. This example will result in CircleCI executing a deploy each time it successfully builds the master branch.

# circle.yml
deployment:
  test:
    branch: master
    commands:
      - mina deploy

API Permissions

Once this runs, mina-circle will be calling back into CircleCI's API and will require a token. Since it's running on their servers, not your own computer, you'll need to supply one to the project configuration on CircleCI. In your CircleCI project's settings:

  • Click API permissions under Permissions
  • Enter a value for Token label and click Create token
  • Copy the token string
  • Click the Environment variables section under Tweaks
  • Enter MINA_CIRCLE_TOKEN for the variable name, and the value is the token you copied in the previous step

SSH Access

Now running remotely, CircleCI will need a private key which works to access your server. Permissions and access during deployment describes setting this up on both CircleCI and your server.

Not Enough?

Depending on how you have Mina configured, you may want to investigate mina-multistage to target specific environments for this task. Also, CircleCI's deployment phase offers many more features than what this simple example covers. Read this section of their configuration guide to learn more about how to use it.

About

πŸš€ A deployment wrapper for mina based, artifact deployment.

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