Class: Snapback::App::Drop

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/snapback/app/drop.rb

Instance Method Summary collapse

Instance Method Details

#go ⇒ Object 



9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
 
# File 'lib/snapback/app/drop.rb', line 9

def go
  volume_group_name = "#{$config['lvm']['volume_group']}"
  logical_volume_name = "#{$config['lvm']['prefix_database']}-#{$options[:database]}"
  mount_dir = get_mount_dir $options[:database]
  mysql_data_dir = $database.get_data_dir

  # Remove the backup
  Snapback::App::Commit.instance.go

  if !$database.db_exists?($options[:database]) then
    raise "Database '#{$options[:database]}' does not exist"
  end

  # Flush
  exec_flush

  # Stop the MySQL Server
  $database.server_stop

  on_rollback lambda {
    $database.server_start
  }

  # Unlink
  exec_unlink "#{mysql_data_dir}/#{$options[:database]}", mount_dir

  # Unmount
  exec_unmount "/dev/#{volume_group_name}/#{logical_volume_name}", mount_dir

  # Remove logical volume
  run "Remove logical volume", 
    "lvremove -f /dev/#{volume_group_name}/#{logical_volume_name}"

  # Start the MySQL Server
  $database.server_start

  on_rollback lambda {
    $database.server_stop
  }
end