Class: HerokuHelper::App

Inherits:
Object
  • Object
show all
Defined in:
lib/heroku_helper/app.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(api_key, app_name) ⇒ App

Returns a new instance of App.



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# File 'lib/heroku_helper/app.rb', line 34

def initialize(api_key, app_name)
  @api_key = api_key
  @app_name = app_name
end

Instance Attribute Details

#app_name ⇒ Object (readonly)

Returns the value of attribute app_name.



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# File 'lib/heroku_helper/app.rb', line 32

def app_name
  @app_name
end

Instance Method Details

#deploy(branch:, worker: nil, clock: nil, enable_maintenance: false) ⇒ Object 



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# File 'lib/heroku_helper/app.rb', line 39

def deploy(branch:, worker: nil, clock: nil, enable_maintenance: false)
  remote = @app_name
  heroku = PlatformAPI.connect_oauth @api_key

  git_url = heroku.app.info(@app_name)['git_url']
  if git_url
    HerokuHelper.logger.info "Heroku repo: #{git_url}"
  else
    HerokuHelper.logger.error 'Cannot determine git url'
    return false
  end

  # Set up git to deploy
  begin
    git = Git.open('.', log: HerokuHelper.logger)
    git.config('url.ssh://[email protected]/.insteadOf', 'https://git.heroku.com/')

    remotes = git.remotes.map &:name
    if remotes.include? remote
      HerokuHelper.logger.info "Resetting remote: #{remote}"
      git.remove_remote remote
    end

    git.add_remote remote, git_url, fetch: true, track: 'master'
  rescue => e
    HerokuHelper.logger.error "Could not set up git correctly. Error: #{e}"
    return false
  end

  scale worker: 0, clock: 0
  maintenance(true) if enable_maintenance

  git.push remote, "#{branch}:master"

  migrate
  maintenance(false) if enable_maintenance
  scale worker: worker, clock: clock
  HerokuHelper.logger.info "Deployed #{@app_name}"
  true
rescue => e
  HerokuHelper.logger.error "FAILED TO DEPLOY! Your app is in a bad state and needs to be fixed manually. Error: #{e}"
  return false
end

#maintenance(enabled) ⇒ Object 



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# File 'lib/heroku_helper/app.rb', line 83

def maintenance(enabled)
  heroku = PlatformAPI.connect_oauth @api_key
  if enabled
    HerokuHelper.logger.info "Enabling maintenance for #{@app_name}"
  else
    HerokuHelper.logger.info "Disabling maintenance for #{@app_name}"
  end
  heroku.app.update(@app_name, maintenance: enabled)
end

#migrate ⇒ Object 



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# File 'lib/heroku_helper/app.rb', line 93

def migrate
  heroku = PlatformAPI.connect_oauth @api_key
  payload = {
    attach: true,
    command: 'rake db:migrate'
  }
  response = heroku.dyno.create(@app_name, payload)

  begin
    HerokuHelper.logger.info 'Running migrations'
    # set an activity timeout so it doesn't block forever
    Rendezvous.start(url: response['attach_url'], activity_timeout: 600)
    return true
  rescue => e
    HerokuHelper.logger.error("Error capturing output for dyno\n#{e.message}")
    return false
  end
end

#restart ⇒ Object 



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# File 'lib/heroku_helper/app.rb', line 166

def restart
  heroku = PlatformAPI.connect_oauth @api_key
  heroku.dyno.restart_all @app_name
  HerokuHelper.logger.info "#{app_name} restarted"
end

#scale(worker: nil, clock: nil) ⇒ Object 



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# File 'lib/heroku_helper/app.rb', line 112

def scale(worker: nil, clock: nil)
  heroku = PlatformAPI.connect_oauth @api_key

  payload = {
    updates: []
  }

  heroku_formation = heroku.formation

  formations = heroku_formation.list(@app_name)
  formations.each do |formation|
    size = formation['size']
    if !worker.nil? && formation['type'] == 'worker'
      if formation['quantity'] != worker
        payload[:updates] << {
          process: 'worker',
          quantity: worker,
          size: size
        }
        HerokuHelper.logger.info "Scaling worker to #{worker}"
      else
        HerokuHelper.logger.warn "Worker is already scaled to #{worker}"
      end
    elsif !clock.nil? && formation['type'] == 'clock'
      if formation['quantity'] != clock
        payload[:updates] << {
          process: 'clock',
          quantity: clock,
          size: size
        }
        HerokuHelper.logger.info "Scaling clock to #{clock}"
      else
        HerokuHelper.logger.warn "Clock is already scaled to #{clock}"
      end
    end
  end

  if payload[:updates].empty?
    HerokuHelper.logger.warn 'Nothing to scale. Please check your configurations'
  else
    if payload[:updates].map { |u| u[:size] }.uniq.include? 'Free'
      HerokuHelper.logger.warn 'You can only run 2 dynos on the free tier'
      updates = payload[:updates].sort { |a, b| a[:quantity] <=> b[:quantity] }
      updates.each do |update|
        type = update[:process]
        quantity = update[:quantity]
        heroku_formation.update(@app_name, type, quantity: quantity)
      end
    else
      heroku_formation.batch_update(@app_name, payload)
    end
  end
end

#version ⇒ Object 



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# File 'lib/heroku_helper/app.rb', line 172

def version
  heroku = PlatformAPI.connect_oauth @api_key
  build = heroku.build.list(@app_name).last
  build['source_blob']['version'].tap do |version|
    HerokuHelper.logger.info "#{@app_name}::version #{version}"
  end
end