class Fission::Action::Snapshot::Reverter

def initialize(vm)

Returns a new SnapshotReverter object

Fission::Action::SnapshotReverter.new @my_vm

Examples:

vm - An instance of VM

object.
Internal: Creates a new SnapshotReverter object. This accepts a VM 
def initialize(vm)
  @vm = vm
end

def revert_to_snapshot(name)

If there is an error, an unsuccessful Response will be returned.
If successful, the Response's data attribute will be nil.
Returns a Response with the result.

@reverter.revert_to_snapshot('foo_snap_1')

Examples

name - The snapshot name to revert to.

revert to must exist and the Fusion GUI must not be running.
Public: Reverts the VM to the specified snapshot. The snapshot to 
def revert_to_snapshot(name)
  unless @vm.exists?
    return Response.new :code => 1, :message => 'VM does not exist'
  end
  if Fusion.running?
    message = 'It looks like the Fusion GUI is currently running.  '
    message << 'A VM cannot be reverted to a snapshot when the Fusion GUI is running.  '
    message << 'Exit the Fusion GUI and try again.'
    return Response.new :code => 1, :message => message
  end
  conf_file_response = @vm.conf_file
  return conf_file_response unless conf_file_response.successful?
  snapshots_response = @vm.snapshots
  return snapshots_response unless snapshots_response.successful?
  unless snapshots_response.data.include? name
    message = "Unable to find a snapshot named '#{name}'."
    return Response.new :code => 1, :message => message
  end
  command = "#{vmrun_cmd} revertToSnapshot "
  command << "'#{conf_file_response.data}' \"#{name}\" 2>&1"
  command_exec = Fission::Action::ShellExecutor.new command
  Response.from_shell_executor command_exec.execute
end

def vmrun_cmd

Fission.config['vmrun_cmd'].
Returns a String for the configured value of

# => "/foo/bar/vmrun -T fusion"
@reverter.vmrun_cmd

Examples

Internal: Helper for getting the configured vmrun_cmd value. 
def vmrun_cmd
  Fission.config['vmrun_cmd']
end