Class: Bosh::Director::DeploymentPlan::InstancePlanSorter

Inherits:
Object
  • Object
show all
Defined in:
lib/bosh/director/deployment_plan/instance_plan_sorter.rb

Instance Method Summary collapse

Constructor Details

#initialize(logger) ⇒ InstancePlanSorter

Returns a new instance of InstancePlanSorter.



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# File 'lib/bosh/director/deployment_plan/instance_plan_sorter.rb', line 3

def initialize(logger)
  @logger = logger
end

Instance Method Details

#sort(instance_plans) ⇒ Object 



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# File 'lib/bosh/director/deployment_plan/instance_plan_sorter.rb', line 7

def sort(instance_plans)
  return [] if instance_plans.empty?

  @logger.debug('Sorting instance plan to update them always in the same order')

  @sorted_instance_plans = []
  bootstrap_instance_plan = instance_plans.find { |instance_plan| instance_plan.instance.bootstrap? }
  @sorted_instance_plans << bootstrap_instance_plan

  bootstrap_az = bootstrap_instance_plan.instance.availability_zone_name
  remaining_instance_plans = instance_plans - [bootstrap_instance_plan]

  sorted_instance_plans_for_bootstrap_az = sorted_instance_plans_in_special_az(bootstrap_az, remaining_instance_plans)
  remaining_instance_plans = remaining_instance_plans - sorted_instance_plans_for_bootstrap_az

  sorted_instance_plans_for_no_az = sorted_instance_plans_in_special_az(nil, remaining_instance_plans)
  remaining_instance_plans = remaining_instance_plans - sorted_instance_plans_for_no_az

  instance_plans_sorted_by_az = remaining_instance_plans.sort do |plan1, plan2|
    plan1.instance.availability_zone_name <=> plan2.instance.availability_zone_name
  end

  current_az = instance_plans_sorted_by_az.first.instance.availability_zone_name if instance_plans_sorted_by_az.any?
  instance_plans_in_current_az = []
  instance_plans_sorted_by_az.each do |instance_plan|
    if instance_plan.instance.availability_zone_name == current_az
      instance_plans_in_current_az << instance_plan
    else
      @sorted_instance_plans << sort_in_az(instance_plans_in_current_az)
      current_az = instance_plan.instance.availability_zone_name
      instance_plans_in_current_az = [instance_plan]
    end
  end
  @sorted_instance_plans << sort_in_az(instance_plans_in_current_az)
  @sorted_instance_plans.flatten
end