Class: DatadogBackup::Cli

Inherits:
Object
  • Object
show all
Includes:
Options
Defined in:
lib/datadog_backup/cli.rb

Instance Method Summary collapse

Methods included from Options

#action, #backup_dir, #concurrency_limit, #diff_format, #force_restore, #output_format, #resources

Constructor Details

#initialize(options) ⇒ Cli

Returns a new instance of Cli.



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# File 'lib/datadog_backup/cli.rb', line 80

def initialize(options)
  @options = options
end

Instance Method Details

#all_diff_futures ⇒ Object 



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# File 'lib/datadog_backup/cli.rb', line 10

def all_diff_futures
  LOGGER.info("Starting diffs on #{::DatadogBackup::ThreadPool::TPOOL.max_length} threads")
  any_resource_instance
    .all_file_ids_for_selected_resources
    .map do |id|
    Concurrent::Promises.future_on(::DatadogBackup::ThreadPool::TPOOL, id) do |id|
      [id, getdiff(id)]
    end
  end
end

#any_resource_instance ⇒ Object 



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# File 'lib/datadog_backup/cli.rb', line 21

def any_resource_instance
  resource_instances.first
end

#backup ⇒ Object 



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# File 'lib/datadog_backup/cli.rb', line 25

def backup
  resource_instances.each(&:purge)
  resource_instances.each(&:backup)
  any_resource_instance.all_files
end

#definitive_resource_instance(id) ⇒ Object 



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# File 'lib/datadog_backup/cli.rb', line 31

def definitive_resource_instance(id)
  matching_resource_instance(any_resource_instance.class_from_id(id))
end

#diffs ⇒ Object 



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# File 'lib/datadog_backup/cli.rb', line 35

def diffs
  futures = all_diff_futures
  ::DatadogBackup::ThreadPool.watcher.join

  format_diff_output(
    Concurrent::Promises
      .zip(*futures)
      .value!
      .compact
  )
end

#format_diff_output(diff_output) ⇒ Object 



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# File 'lib/datadog_backup/cli.rb', line 61

def format_diff_output(diff_output)
  case diff_format
  when nil, :color
    diff_output.map do |id, diff|
      " ---\n id: #{id}\n#{diff}"
    end.join("\n")
  when :html
    '<html><head><style>' +
      Diffy::CSS +
      '</style></head><body>' +
      diff_output.map do |id, diff|
        "<br><br> ---<br><strong> id: #{id}</strong><br>" + diff
      end.join('<br>') +
      '</body></html>'
  else
    raise 'Unexpected diff_format.'
  end
end

#getdiff(id) ⇒ Object 



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# File 'lib/datadog_backup/cli.rb', line 47

def getdiff(id)
  result = definitive_resource_instance(id).diff(id)
  case result
  when ''
    nil
  when "\n"
    nil
  when '<div class="diff"></div>'
    nil
  else
    result
  end
end

#matching_resource_instance(klass) ⇒ Object 



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# File 'lib/datadog_backup/cli.rb', line 84

def matching_resource_instance(klass)
  resource_instances.select { |resource_instance| resource_instance.instance_of?(klass) }.first
end

#resource_instances ⇒ Object 



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# File 'lib/datadog_backup/cli.rb', line 88

def resource_instances
  @resource_instances ||= resources.map do |resource|
    resource.new(@options)
  end
end

#restore ⇒ Object 



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# File 'lib/datadog_backup/cli.rb', line 94

def restore
  futures = all_diff_futures
  watcher = ::DatadogBackup::ThreadPool.watcher

  futures.each do |future|
    id, diff = *future.value!
    next unless diff

    if @options[:force_restore]
      definitive_resource_instance(id).restore(id)
    else
      puts '--------------------------------------------------------------------------------'
      puts format_diff_output([id, diff])
      puts '(r)estore to Datadog, overwrite local changes and (d)ownload, (s)kip, or (q)uit?'
      response = $stdin.gets.chomp
      case response
      when 'q'
        exit
      when 'r'
        puts "Restoring #{id} to Datadog."
        definitive_resource_instance(id).restore(id)
      when 'd'
        puts "Downloading #{id} from Datadog."
        definitive_resource_instance(id).get_and_write_file(id)
      when 's'
        next
      else
        puts 'Invalid response, please try again.'
        response = $stdin.gets.chomp
      end
    end
  end
  watcher.join if watcher.status
end

#run! ⇒ Object 



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# File 'lib/datadog_backup/cli.rb', line 129

def run!
  puts(send(action.to_sym))
rescue SystemExit, Interrupt
  ::DatadogBackup::ThreadPool.shutdown
end