Class: OpzWorks::Commands::ELASTIC

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

Class Method Summary collapse

Class Method Details



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# File 'lib/opzworks/commands/elastic.rb', line 16

def self.banner
  'Perform operations on an Elastic cluster'
end

.run ⇒ Object 



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# File 'lib/opzworks/commands/elastic.rb', line 20

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

        opzworks elastic stack1 stack2 ... [--start|--stop|--bounce|--rolling]

      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 :start, 'Start Elastic', default: false
    opt :stop, 'Stop Elastic', default: false
    opt :bounce, 'Bounce (stop/start) Elastic', default: false
    opt :rolling, 'Perform a rolling restart of Elastic', default: false
    opt :old_service_name, "Use 'elasticsearch' as the service name, otherwise use the layer shortname", default: false
  end
  ARGV.empty? ? Trollop.die('no stacks specified') : false

  optarr = []
  options.each do |opt, val|
    val == true ? optarr << opt : false
  end
  optarr.empty? ? Trollop.die('no options specified') : false

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

  # loops over inputs
  ARGV.each do |opt|
    var = if options[:start]
            es_get_input(opt, response, 'start')
          else
            es_get_input(opt, response)
          end
    next if var == false

    options[:old_service_name] ? @service_name = 'elasticsearch' : false

    case options[:rolling]
    when true
      # cycle through all the hosts, waiting for status
      @ip_addrs.each do |ip|
        puts "\n________________________________________________"
        puts "Now operating on host #{ip}".foreground(:yellow)

        if @disable_shard_allocation
          es_enable_allocation(ip, 'none')
          sleep 2
        end

        es_service('restart', [ip], @service_name)
        es_wait_for_status(ip, 'yellow')
        es_enable_allocation(ip, 'all') if @disable_shard_allocation
        es_wait_for_status(ip, 'green')
      end
    end

    case options[:start]
    when true
      es_service('start', @ip_addrs, @service_name)

      @ip_addrs.each do |ip|
        es_wait_for_status(ip, 'green')
      end
    end

    case options[:stop]
    when true
      # use the first host to disable shard allocation
      if @disable_shard_allocation
        es_enable_allocation(@ip_addrs.first, 'none')
        sleep 2
      end

      es_service('stop', @ip_addrs, @service_name)
    end

    case options[:bounce]
    when true
      # use the first host to disable shard allocation
      if @disable_shard_allocation
        es_enable_allocation(@ip_addrs.first, 'none')
        sleep 2
      end

      es_service('restart', @ip_addrs, @service_name)

      es_wait_for_status(@ip_addrs.first, 'yellow')
      es_enable_allocation(@ip_addrs.first, 'all') if @disable_shard_allocation
      es_wait_for_status(@ip_addrs.first, 'green')
    end
  end
end