Enum HostSelection 

pub enum HostSelection {
    Single(VpsName),
    All,
    Named(Vec<VpsName>),
    Tagged(Vec<HostTag>),
}

How multi-host SSH ops select target hosts (G-PAR-27 / G-PAR-31 / G-TYPE-09).

Workload: selection is pure local map lookup (tiny). Parallelism starts only after resolve_host_jobs when callers fan out via crate::concurrency::map_bounded.

Names/tags are refined at the CLI boundary (VpsName / HostTag); map keys stay owned String for wire/storage compatibility.

Variants

Single(VpsName)

One host by name (positional). Classic single-host JSON wire.

All

Every registered host. Batch JSON wire.

Named(Vec<VpsName>)

Explicit subset (--hosts). Batch JSON wire even if len == 1 (G-PAR-36).

Tagged(Vec<HostTag>)

Hosts matching any of the given tags (OR). Batch JSON wire (G-O2).

Implementations

impl HostSelection

pub fn is_batch(&self) -> bool

True when output must use the multi-host batch envelope.

pub fn target_source(&self) -> TargetSource

Provenance of this selection, for the target_source wire field.

Transfers have no active-marker path — scp and sftp never read the file connect writes — so the mapping is total: a lone name came from a positional (argv), and every plural form came from a selector flag.

Trait Implementations

impl Clone for HostSelection

fn clone(&self) -> HostSelection

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HostSelection

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for HostSelection

impl PartialEq for HostSelection

fn eq(&self, other: &HostSelection) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for HostSelection