Class: Bosh::Director::DeploymentPlan::PlacementPlanner::AvailabilityZonePicker

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

Instance Method Summary collapse

Constructor Details

#initialize(instance_plan_factory, network_planner, networks, desired_azs) ⇒ AvailabilityZonePicker

Returns a new instance of AvailabilityZonePicker.



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# File 'lib/bosh/director/deployment_plan/placement_planner/availability_zone_picker.rb', line 6

def initialize(instance_plan_factory, network_planner, networks, desired_azs)
  @instance_plan_factory = instance_plan_factory
  @network_planner = network_planner
  @networks = networks
  @desired_azs = desired_azs
  @logger = Config.logger
end

Instance Method Details

#place_and_match_in(desired_instances, existing_instance_models) ⇒ Object 



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# File 'lib/bosh/director/deployment_plan/placement_planner/availability_zone_picker.rb', line 14

def place_and_match_in(desired_instances, existing_instance_models)
  validate_networks_not_changed_for_ignore_vms(existing_instance_models)

  unplaced_existing_instances =  UnplacedExistingInstances.new(existing_instance_models)
  desired_azs_sorted = unplaced_existing_instances.azs_sorted_by_existing_instance_count_descending(@desired_azs)
  @logger.debug("Desired azs: #{desired_azs_sorted.inspect}")
  validate_desired_azs_contains_all_azs_from_ignored_instances(unplaced_existing_instances, desired_instances)

  placed_instances = PlacedDesiredInstances.new(desired_azs_sorted)

  remaining_desired_instances_minus_ignored = place_instances_that_have_ignore_flag_as_true(desired_azs_sorted, desired_instances, placed_instances, unplaced_existing_instances)
  remaining_desired_instances = place_instances_that_have_persistent_disk_in_existing_az(desired_azs_sorted, remaining_desired_instances_minus_ignored, placed_instances, unplaced_existing_instances)
  balance_across_desired_azs(remaining_desired_instances, placed_instances, unplaced_existing_instances)

  obsolete_instance_plans(unplaced_existing_instances.unclaimed) +
    desired_existing_instance_plans(placed_instances.existing) +
    desired_new_instance_plans(placed_instances.absent)
end