class Bosh::AwsCloud::AvailabilityZoneSelector
Attributes
region[RW]
Public Class Methods
new(region, default_name)
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# File lib/cloud/aws/availability_zone_selector.rb, line 5 def initialize(region, default_name) @region = region @default = default_name end
Public Instance Methods
common_availability_zone(volume_az_names, resource_pool_az_name, vpc_subnet_az_name)
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# File lib/cloud/aws/availability_zone_selector.rb, line 10 def common_availability_zone(volume_az_names, resource_pool_az_name, vpc_subnet_az_name) zone_names = (volume_az_names + [resource_pool_az_name, vpc_subnet_az_name]).compact.uniq if zone_names.size > 1 volume_az_error_string = ", and volume in #{volume_az_names.join(', ')}" unless volume_az_names.empty? raise Bosh::Clouds::CloudError, "can't use multiple availability zones: subnet in #{vpc_subnet_az_name}, VM in #{resource_pool_az_name}#{volume_az_error_string}" end zone_names.first || @default end
select_availability_zone(instance_id)
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# File lib/cloud/aws/availability_zone_selector.rb, line 20 def select_availability_zone(instance_id) if instance_id region.instances[instance_id].availability_zone elsif @default @default else random_availability_zone end end
Private Instance Methods
random_availability_zone()
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# File lib/cloud/aws/availability_zone_selector.rb, line 32 def random_availability_zone zones = [] region.availability_zones.each { |zone| zones << zone.name } zones[Random.rand(zones.size)] end