Struct Durability 

pub struct Durability {
    pub tier: DurabilityTier,
    pub engine: Option<DurabilityEngine>,
    pub store: Option<String>,
    pub subjects: Vec<String>,
    pub rpo_seconds: Option<u32>,
    pub state_mb: Option<u32>,
}

A workload’s durability declaration — WorkloadSpec::durability.

Every field but tier defaults, because which of them are required depends on the tier, and that is a rule serde cannot express. Self::check is where it is enforced; read the declaration through WorkloadSpec::durability, which applies it.

Fields

tier: DurabilityTier

engine: Option<DurabilityEngine>

Which engine’s tier vocabulary this is. Some exactly when DurabilityTier::ships_bytes — enforced by Self::check (R850-F1).

store: Option<String>

Object-store URL the copy lives at. Some (and non-blank) exactly when DurabilityTier::ships_bytes — enforced by Self::check.

subjects: Vec<String>

Volume-relative paths of the database files this tier covers, in declaration order. Non-empty exactly when DurabilityTier::ships_bytes — enforced by Self::check (R850-F1).

Volume-relative, never absolute: the same string is joined onto the container’s mount target when read as documentation and onto /var/lib/yah/kamaji/volumes/<name> when a hydrate writes it. Each is also the object-store key suffix under Self::store, so the layout an operator sees in the bucket mirrors the layout on the volume.

rpo_seconds: Option<u32>

Declared recovery-point objective in seconds. DurabilityTier::Stream only; None there means turso_backup::stream::DEFAULT_RPO_TARGET.

state_mb: Option<u32>

Expected steady-state size of this workload’s state, in MiB — the input a cold-start-from-object-store estimate needs and cannot get anywhere else. The microVM scratch floor (WorkloadSpec::scratch_floor_mb) is not it: that sizes a job’s ephemeral workspace, and a named volume is neither ephemeral nor a workspace.

Declared, never measured. Any recovery-time figure derived from it inherits that, and must say so at the point it is printed.

Implementations

impl Durability

pub fn check(&self) -> Result<(), DurabilityDeclError>

The rules that span fields, which serde cannot enforce. Checked in the order a human would fix them: where the copy goes, when, what engine, which files.

Trait Implementations

impl Clone for Durability

fn clone(&self) -> Durability

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Durability

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Durability

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Durability

impl PartialEq for Durability

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Durability

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 Durability

impl TS for Durability

type WithoutGenerics = Durability

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 = Durability

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.