// machinesFilter returns a nova.Filter matching all machines in the environment.
func (e *Environ) machinesFilter() *nova.Filter {
filter := nova.NewFilter()
eUUID := e.Config().UUID()
filter.Set(nova.FilterServer, fmt.Sprintf("juju-%s-machine-\\d*", eUUID))
return filter
}
// oldMachinesFilter returns a nova.Filter matching all machines in the environment
// that use the old name schema (juju-EnvironmentName-number).
func oldMachinesFilter(e *Environ) *nova.Filter {
filter := nova.NewFilter()
filter.Set(nova.FilterServer, fmt.Sprintf("juju-%s-machine-\\d*", e.Config().Name()))
return filter
}
// jujuMachineFilter returns a nova.Filter matching machines created by Juju.
// The machines are not filtered to any particular environment. To do that,
// instance tags must be compared.
func jujuMachineFilter() *nova.Filter {
filter := nova.NewFilter()
filter.Set(nova.FilterServer, "juju-.*")
return filter
}