Enum Locality 

pub enum Locality {
    Anywhere,
    PreferLocal,
    Local,
}

Which providers count as satisfying a Requirement (W338).

One of the two independent axes a requirement carries. depends_on could only ever say “someone, somewhere, is Ready” — which is the wrong answer for a provider that must open the same file on the same filesystem as its requirer (the headscale sqlite replicator, W338’s motivating case). Locality makes co-location a declared property instead of something arranged outside the spec by a systemd unit.

Variants

Anywhere

Any Ready provider service discovery can reach, anywhere in the mesh. Exactly what a WorkloadSpec::depends_on entry means today, which is why it is the default — folding depends_on into requires must not change any existing spec’s meaning.

PreferLocal

A provider on this node satisfies it; otherwise a remote one does.

Never blocks placement. This is the “at least one wherever this app runs” shape — a local replica is preferred, a remote one is acceptable, and nothing is refused for want of either.

Local

Only a provider on this node satisfies it. A true sidecar edge: the requirer and the provider form a placement group that must be placed together and must move together.

Trait Implementations

impl Clone for Locality

fn clone(&self) -> Locality

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Locality

impl Debug for Locality

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

Formats the value using the given formatter.

impl Default for Locality

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Locality

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Locality

impl PartialEq for Locality

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Locality

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Locality

impl TS for Locality

type WithoutGenerics = Locality

If this type does not have generic parameters, then WithoutGenerics should just be Self. If the type does have generic parameters, then all generic parameters must be replaced with a dummy type, e.g ts_rs::Dummy or ().
The only requirement for these dummy types is that EXPORT_TO must be None.

type OptionInnerType = Locality

If the implementing type is std::option::Option<T>, then this associated type is set to T. All other implementations of TS should set this type to Self instead.

fn ident(cfg: &Config) -> String

Identifier of this type, excluding generic parameters.

fn docs() -> Option<String>

JSDoc comment to describe this type in TypeScript - when TS is derived, docs are automatically read from your doc comments or #[doc = ".."] attributes

fn name(cfg: &Config) -> String

Name of this type in TypeScript, including generic parameters

fn decl_concrete(cfg: &Config) -> String

Declaration of this type using the supplied generic arguments. The resulting TypeScript definition will not be generic. For that, see TS::decl(). If this type is not generic, then this function is equivalent to TS::decl().

fn decl(cfg: &Config) -> String

Declaration of this type, e.g. type User = { user_id: number, ... }. This function will panic if the type has no declaration.

fn inline(cfg: &Config) -> String

Formats this types definition in TypeScript, e.g { user_id: number }. This function will panic if the type cannot be inlined.

fn inline_flattened(cfg: &Config) -> String

Flatten a type declaration. This function will panic if the type cannot be flattened.

fn visit_generics(v: &mut impl TypeVisitor)

where Self: 'static,

Iterates over all type parameters of this type.

fn output_path() -> Option<PathBuf>

Returns the output path to where T should be exported, relative to the output directory. The returned path does not include any base directory.

fn visit_dependencies(v: &mut impl TypeVisitor)

where Self: 'static,

Iterates over all dependency of this type.

fn dependencies(cfg: &Config) -> Vec<Dependency>

where Self: 'static,

Resolves all dependencies of this type recursively.

fn export(cfg: &Config) -> Result<(), ExportError>

where Self: 'static,

Manually export this type to the filesystem. To export this type together with all of its dependencies, use TS::export_all.

fn export_all(cfg: &Config) -> Result<(), ExportError>

where Self: 'static,

Manually export this type to the filesystem, together with all of its dependencies. To export only this type, without its dependencies, use TS::export.

fn export_to_string(cfg: &Config) -> Result<String, ExportError>

where Self: 'static,

Manually generate bindings for this type, returning a String. This function does not format the output, even if the format feature is enabled.