class Fission::Action::Snapshot::Lister

def initialize(vm)

Returns a new SnapshotLister object

Fission::Action::SnapshotLister.new @my_vm

Examples:

vm - An instance of VM

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

def parse_snapshot_names_from_output(cmd_output)

Returns an Array with the list of snapshot names.

# => ['snap_1', 'snap_2']
@lister.parse_snapshot_names_from_output cmd_output
Examples:

output - The output of the vmrun listSnapshot command.

Internal: Parses the output of the listSnapshot command. 
def parse_snapshot_names_from_output(cmd_output)
  header_text = 'Total snapshots:'
  snaps = cmd_output.split("\n").select { |s| !s.include? header_text }
  snaps.map { |s| s.strip }
end

def snapshots

If there is an error, an unsuccessful Response will be returned.
snapshot names (String).
If successful, the Repsonse's data attribute will be an Array of the
Returns a Response with the result.

# => ['snap 1', 'snap 2']
@lister.snapshots.data

Examples

Internal: List the snapshots for a VM. 
def snapshots
  unless @vm.exists?
    return Response.new :code => 1, :message => 'VM does not exist'
  end
  conf_file_response = @vm.conf_file
  return conf_file_response unless conf_file_response.successful?
  command = "#{vmrun_cmd} listSnapshots "
  command << "'#{conf_file_response.data}' 2>&1"
  command_exec = Fission::Action::ShellExecutor.new command
  result = command_exec.execute
  response = Response.new :code => result['process_status'].exitstatus
  if response.successful?
    response.data = parse_snapshot_names_from_output result['output']
  else
    response.message = result['output']
  end
  response
end

def vmrun_cmd

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

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

Examples

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