Class: OpzWorks::Commands::BERKS

Inherits:
Object
  • Object
show all
Defined in:
lib/opzworks/commands/berks.rb

Class Method Summary collapse

Class Method Details



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# File 'lib/opzworks/commands/berks.rb', line 15

def self.banner
  'Build the stack berkshelf'
end

.runObject



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# File 'lib/opzworks/commands/berks.rb', line 19

def self.run
  options = Trollop.options do
    banner <<-EOS.unindent
      #{BERKS.banner}

        opzworks berks stack1 stack2 ...

      The stack name can be passed as any unique regex. If there is
      more than one match, it will simply be skipped.

      Options:
    EOS
    opt :ucc, 'Trigger update_custom_cookbooks on stack after uploading a new cookbook tarball.', default: true
    opt :update, 'Run berks update before packaging the Berkshelf.', default: false, short: 'u'
    opt :cookbooks, 'Run berks update only for the specified cookbooks (requires -u)', type: :strings, default: nil, short: 'c'
    opt :clone, 'Only clone the management repo, then exit.', default: false
  end
  ARGV.empty? ? Trollop.die('no stacks specified') : false

  config = OpzWorks.config

  aws_credentials_provider = Aws::SharedCredentials.new(profile_name: config.aws_profile)
  s3 = Aws::S3::Resource.new(region: config.aws_region, credentials: aws_credentials_provider)
  s3_client = Aws::S3::Client.new(region: config.aws_region, credentials: aws_credentials_provider)

  opsworks = Aws::OpsWorks::Client.new(region: config.aws_region, profile: config.aws_profile)
  response = opsworks.describe_stacks

  # loops over inputs
  ARGV.each do |opt|
    var = populate_stack(opt, response)
    next if var == false

    hash = {
      'PROJECT:'      => @project,
      'CHEF VERSION:' => @chef_version,
      'STACK ID:'     => @stack_id,
      'S3 PATH:'      => @s3_path,
      'S3 URL:'       => @s3_source_url,
      'BRANCH:'       => @branch
    }
    puts "\n"
    puts '-------------------------------'
    hash.each { |k, v| printf("%-25s %-25s\n", k.foreground(:green), v.foreground(:red)) }
    puts '-------------------------------'

    puts "\n"
    var = manage_berks_repos
    next if var == false
    next if options[:clone] == true

    time             = Time.new.utc.strftime('%FT%TZ')
    berks_cook_path  = config.berks_base_path || '/tmp'
    cook_path        = "#{berks_cook_path}/#{@project}-#{@branch}"
    cookbook_tarball = config.berks_tarball_name || 'cookbooks.tgz'
    cookbook_upload  = cook_path + '/' "#{cookbook_tarball}"
    s3_bucket        = config.berks_s3_bucket || 'opzworks'

    FileUtils.mkdir_p(cook_path) unless File.exist?(cook_path)

    # berks
    #
    unless File.exist?("#{@target_path}/Berksfile.lock")
      puts "\nNo Berksfile.lock, running berks install before packaging".foreground(:blue)
      run_local <<-BASH
        cd #{@target_path}
        berks install
        git add Berksfile.lock
      BASH
    end

    if options[:update] == true
      if options[:cookbooks].nil?
        puts "\nUpdating the berkshelf".foreground(:blue)
        run_local <<-BASH
          cd #{@target_path}
          berks update
        BASH
      else
        puts "\nUpdating the berkshelf for cookbook(s): ".foreground(:blue) + options[:cookbooks].join(', ').to_s.foreground(:green)
        run_local <<-BASH
          cd #{@target_path}
          berks update #{options[:cookbooks].join(' ')}
        BASH
      end
    else
      puts "\nNot running berks update".foreground(:blue)
    end

    puts "\nPackaging the berkshelf".foreground(:blue)
    run_local <<-BASH
      cd #{@target_path}
      berks package #{cook_path}/#{cookbook_tarball}
    BASH

    puts "\nCommitting changes and pushing".foreground(:blue)
    system "cd #{@target_path} && git commit -am 'berks update'; git push origin #{@branch}"

    # backup previous if it exists
    #
    puts "\nBackup".foreground(:blue)
    begin
      s3_client.head_object(
        bucket: s3_bucket,
        key: "#{@s3_path}/#{cookbook_tarball}"
      )
    rescue Aws::S3::Errors::ServiceError
      puts "No existing #{cookbook_tarball} in #{s3_bucket}/#{@s3_path} to backup, continuing...".foreground(:yellow)
    else
      puts "Backing up existing #{cookbook_tarball} to #{@s3_path}/#{cookbook_tarball}-#{time}".foreground(:green)
      begin
        s3_client.copy_object(
          key: "#{@s3_path}/#{cookbook_tarball}-#{time}",
          bucket: s3_bucket,
          copy_source: "#{s3_bucket}/#{@s3_path}/#{cookbook_tarball}"
        )
      rescue Aws::S3::Errors::ServiceError => e
        puts "Caught exception trying to backup existing #{cookbook_tarball} in #{s3_bucket}:".foreground(:red)
        puts "\t#{e}"
        abort
      end
    end

    begin
      cull = s3_client.list_objects(
        bucket: s3_bucket,
        prefix: "#{@s3_path}/#{cookbook_tarball}-"
      )
    rescue Aws::S3::Errors::ServiceError => e
      puts "Caught exception trying to list backups in #{s3_bucket}:".foreground(:red)
      puts "\t#{e}"
    else
      backup_arr = []
      cull.contents.each { |k| backup_arr << k.key }
      backup_arr.pop(5) # keep last 5 backups

      unless backup_arr.empty?
        delete_arr = []
        until backup_arr.empty?
          puts "Adding backup #{backup_arr[0]} to the cull list".foreground(:green)
          delete_arr << backup_arr.pop

          arr_of_hash = []
          delete_arr.each { |i| arr_of_hash << { 'key': i } }

          puts 'Culling old backups'.foreground(:green)
          begin
            s3_client.delete_objects(
              bucket: s3_bucket,
              delete: { objects: arr_of_hash }
            )
          rescue Aws::S3::Errors::ServiceError => e
            puts "Caught exception trying to delete backups in #{s3_bucket}:".foreground(:red)
            puts "\t#{e}"
          end
        end
      end
    end

    # upload
    puts "\nUploading to S3".foreground(:blue)
    begin
      obj = s3.bucket(s3_bucket).object("#{@s3_path}/#{cookbook_tarball}")
      obj.upload_file(cookbook_upload)
    rescue Aws::S3::Errors::ServiceError => e
      puts "Caught exception while uploading to S3 bucket #{s3_bucket}:".foreground(:red)
      puts "\t#{e}"
      puts "\nCleaning up before exiting".foreground(:blue)

      FileUtils.rm_rf(cook_path)
      abort
    else
      puts "Completed successful upload of #{@s3_path}/#{cookbook_tarball} to #{s3_bucket}!".foreground(:green)
    end

    # cleanup
    #
    puts "\nCleaning up".foreground(:blue)
    FileUtils.rm_rf(cook_path)
    puts 'Done!'.foreground(:green)

    # update remote cookbooks
    #
    if options[:ucc] == true
      puts "\nTriggering update_custom_cookbooks for remote stack (#{@stack_id})".foreground(:blue)

      hash = {}
      hash[:comment]  = 'shake and bake'
      hash[:stack_id] = @stack_id
      hash[:command]  = { name: 'update_custom_cookbooks' }

      begin
        opsworks.create_deployment(hash)
      rescue Aws::OpsWorks::Errors::ServiceError => e
        puts 'Caught error while attempting to trigger deployment: '.foreground(:red)
        puts "\t#{e}"
      else
        puts 'Done!'.foreground(:green)
      end
    else
      puts 'Update custom cookbooks skipped via --no-ucc switch.'.foreground(:blue)
    end
  end
end