Struct SubnetRule 

pub struct SubnetRule {
    pub tag_prefix: String,
    pub level: u8,
    pub values: HashMap<String, u8>,
}

A single rule mapping a tag pattern to a hierarchy level.

Fields

tag_prefix: String

Tag prefix to match (e.g., “region:”).

level: u8

Which hierarchy level this tag fills (0-3).

values: HashMap<String, u8>

Map from tag value to level value (e.g., “us-west” -> 1).

Implementations

impl SubnetRule

pub fn new(tag_prefix: impl Into<String>, level: u8) -> Self

Create a new rule.

pub fn map(self, tag_value: impl Into<String>, level_value: u8) -> Self

Map a tag value to a level value.

Panics

Panics if level_value is 0 (reserved for “unmatched / no restriction”). For untrusted input prefer Self::try_map.

pub fn try_map( self, tag_value: impl Into<String>, level_value: u8, ) -> Result<Self, SubnetError>

Fallible variant of Self::map.

Pre-existing map panics on level_value == 0. Returns SubnetError::LevelValueReserved instead.

Trait Implementations

impl Clone for SubnetRule

fn clone(&self) -> SubnetRule

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SubnetRule

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

Formats the value using the given formatter.