Crate attune 

Runtime-mutable, persisted, observable configuration for Rust.

attune is the user-facing crate. It re-exports the core types and the Settings derive macro, and (with the default sqlite feature) the SQLite backend.

Structs

ConfigPathOptions

FieldResolveOptions

Inputs used to resolve a single read-only config field.

NoopBackend

PersistResolveOptions

Inputs used to resolve a single persisted config field.

PersistedField

Read, write, and subscribe access to a generated persisted settings field.

ReadOnlyField

Read-only access to a generated settings field.

SettingsHandle

SqliteBackend

SqliteOptions

StoredValue

Enums

ApplyResult

BackendError

Errors returned by storage backends.

ChangeEvent

ChangeSource

SettingsError

Errors returned by generated settings loaders, field setters, and config helpers.

SqliteJournalMode

SqliteSynchronous

Traits

StorageBackend

Functions

decode_persist_value

Decodes a persisted value, with an optional legacy fallback parser.

load_toml_file

Loads an optional TOML config file into a table.

resolve_config_file

Resolves the path to an optional config file.

resolve_persist_field

Resolves a persisted config field from stored values or read-only fallback sources.

resolve_readonly_field

Resolves a read-only config field from environment, TOML, or a default.

Type Aliases

DeserializeFallback

Function pointer used to parse legacy persisted values.

ExternalApplier

Derive Macros

Settings

Expands #[derive(Settings)].