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fog--fog/lib/fog/compute/models/aws/volume.rb

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require 'fog/core/model'
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module Fog
module Compute
class AWS
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class Volume < Fog::Model
identity :id, :aliases => 'volumeId'
attribute :attached_at, :aliases => 'attachTime'
attribute :availability_zone, :aliases => 'availabilityZone'
attribute :created_at, :aliases => 'createTime'
attribute :delete_on_termination, :aliases => 'deleteOnTermination'
attribute :device
attribute :server_id, :aliases => 'instanceId'
attribute :size
attribute :snapshot_id, :aliases => 'snapshotId'
attribute :state, :aliases => 'status'
attribute :tags, :aliases => 'tagSet'
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def initialize(attributes = {})
# assign server first to prevent race condition with new_record?
self.server = attributes.delete(:server)
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super
end
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def destroy
requires :id
connection.delete_volume(id)
true
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end
def ready?
state == 'available'
end
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def save
raise Fog::Errors::Error.new('Resaving an existing object may create a duplicate') if identity
requires :availability_zone, :size
data = connection.create_volume(availability_zone, size, snapshot_id).body
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new_attributes = data.reject {|key,value| key == 'requestId'}
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merge_attributes(new_attributes)
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if @server
self.server = @server
end
true
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end
def server=(new_server)
if new_server
attach(new_server)
else
detach
end
end
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def snapshots
requires :id
connection.snapshots(:volume => self)
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end
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def force_detach
detach(true)
end
private
def attachmentSet=(new_attachment_set)
merge_attributes(new_attachment_set.first || {})
end
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def attach(new_server)
if new_record?
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@server = new_server
self.availability_zone = new_server.availability_zone
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elsif new_server
requires :device
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@server = nil
self.server_id = new_server.id
connection.attach_volume(server_id, id, device)
reload
end
end
def detach(force = false)
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@server = nil
self.server_id = nil
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unless new_record?
connection.detach_volume(id, 'Force' => force)
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reload
end
end
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end
end
end
end