Heroku deploy tasks using ChatWork

deploy.rake

namespace :deploy do

  nowrite ENV['DRYRUN']

  desc 'Deploy to production server'
  task :prod do
    before_last_release = last_release :prod

    sh 'git push prod master'

    after_last_release = last_release :prod
    unless before_last_release == after_last_release
      notify_to_chatwork :prod, before_last_release, after_last_release
    end
  end

  desc 'Deploy to staging server'
  task :staging do
    before_last_release = last_release :staging

    branch = ENV['BRANCH']
    if branch
      sh "git push staging #{branch}"
      sh "git push -f staging #{branch}:master"
    else
      sh 'git push staging master'
    end

    after_last_release = last_release :staging
    unless before_last_release == after_last_release
      notify_to_chatwork :staging, before_last_release, after_last_release
    end
  end

  def last_release stage
    return { deploy_version: nil, commit_hash: nil } if nowrite

    deploy_version = nil
    commit_hash = nil

    `heroku releases --app=#{heroku_app_name stage}`.each_line do |line|
      if line =~ /^(v\d+) +Deploy ([a-f\d]+) /
        deploy_version = $1
        commit_hash = $2
        break
      end
    end

    { deploy_version: deploy_version, commit_hash: commit_hash }
  end

  def heroku_app_name stage
    stage == :prod ? '<Heroku prod app name>' : '<Heroku staging app name>'
  end

  def notify_to_chatwork stage, before_last_release, after_last_release

    room_id              = stage == :prod ? '<Production room_id>' : '<Staging room_id>'
    user_name            = `git config user.name`.chomp
    after_deploy_version = after_last_release[:deploy_version]
    url                  = "<Your GitHub URL>/compare/#{before_last_release[:commit_hash]}...#{after_last_release[:commit_hash]}"

    ChatWork.api_key = '<Your API Key>'
    ChatWork::Message.create room_id: room_id, body: "#{user_name} deployed #{after_deploy_version} #{url}"
  end
end

Require

gem chatwork

You can add the following to Gemfile.

group :development do
  gem 'chatwork'
end

Setup

Add remote repositories

$ git remote add prod git@heroku.com:<Your Heroku App Name of Staging>.git
$ git remote add staging git@heroku.com:<Your Heroku App Name of Production>.git

Put the deploy.rake to lib/tasks

Need to modify the follwoing

• <Heroku prod app name>
• <Heroku staging app name>
• <Production room_id>
• <Staging room_id>
• <Your GitHub URL>
• <Your API Key>

How to deploy

# to Staging
$ bundle exec rake deploy:staging

# to Staging any branch
$ bundle exec rake deploy:staging BRANCH=<any-branch>

# to Production
$ bundle exec rake deploy:prod

You can try the dry-run mode. For example..

$ bundle exec rake deploy:prod DRYRUN=1

See also http://masutaka.net/chalow/2014-01-19-1.html