Class: SnapshotOptimization::IdentifyDuplicateSnapshots

Inherits:
SnapshotOptimizationState show all
Defined in:
lib/scripts/ec2/snapshot_optimization.rb

Overview

All snapshots retrieved. Group them by volume and identify duplicates

Instance Attribute Summary

Attributes inherited from ScriptExecutionState

#context, #logger

Instance Method Summary collapse

Methods inherited from SnapshotOptimizationState

load_state

Methods inherited from ScriptExecutionState

#done?, #end_state, #failed?, #initialize, #register_state_change_listener, #start_state_machine, #to_s

Methods included from StateTransitionHelper

#attach_volume, #check_string_alnum, #connect, #copy_distribution, #create_fs, #create_image_from_instance, #create_labeled_fs, #create_snapshot, #create_volume, #create_volume_from_snapshot, #delete_snapshot, #delete_volume, #describe_instance, #detach_volume, #determine_file, #disable_ssh_tty, #disconnect, #ec2_handler, #ec2_handler=, #enable_ssh_tty, #get_aws_kernel_image_aki, #get_aws_region_from_endpoint, #get_partition_fs_type, #get_partition_fs_type_and_label, #get_partition_label, #get_root_device_name, #get_root_partition_fs_type, #get_root_partition_fs_type_and_label, #get_root_partition_label, #get_root_volume_id, #launch_instance, #local_decompress_and_dump_file_to_device, #local_dump_and_compress_device_to_file, #local_dump_device_to_file, #local_dump_file_to_device, #mount_fs, #mount_fs_old, #register_snapshot, #remote_copy, #remote_copy_old, #remote_handler, #remote_handler=, #retrieve_instances, #retrieve_security_groups, #shut_down_instance, #snapshot_accessible, #start_instance, #stop_instance, #unmount_fs, #upload_file, #zip_volume

Methods included from VCloudTransitionHelper

#retrieve_ip_services

Constructor Details

This class inherits a constructor from ScriptExecutionState

Instance Method Details

#enter ⇒ Object 



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# File 'lib/scripts/ec2/snapshot_optimization.rb', line 64

def enter
  post_message("Going to check for duplicates among snapshots")
  volume_map = {}
  unless @context[:snapshots]['snapshotSet'] == nil
    @context[:snapshots]['snapshotSet']['item'].each() do |snapshot|
      next unless snapshot['progress'] == "100%"
      next if snapshot['ownerAlias'] == "amazon"
      snaps = volume_map[snapshot['volumeId']]
      if snaps == nil
        snaps = []
        volume_map[snapshot['volumeId']] = snaps
      end
      snaps << snapshot
    end
  end
  #
  volume_map.each() do |volume_id, snapshots|
    to_delete = snapshots.size - @context[:max_duplicate_snapshots]
    if to_delete <= 0
      post_message("Number of snapshots for volume #{volume_id} (=#{snapshots.size}) is smaller than #{@context[:max_duplicate_snapshots]} => ignore")
    else
      sorted_snaps = snapshots.sort() do |snap1, snap2|
        Time.parse(snap1['startTime']) <=> Time.parse(snap2['startTime'])
      end
      post_message("Identified #{to_delete} snapshots for volume #{volume_id}")
      @logger.info("not sorted   = #{snapshots.inspect}")
      @logger.info("sorted snaps = #{sorted_snaps.inspect}")
      0.upto(to_delete-1) do |i|
        @context[:result][:duplicate_snapshots] << sorted_snaps[i]['snapshotId']
      end
    end
  end
  if @context[:delete_snapshots]
    DeleteDuplicateSnapshots.new(@context)
  else
    RetrieveVolumes.new(@context)
  end
end