Struct ConfigStore 

pub struct ConfigStore { /* private fields */ }

Handle providing read/write access to the on-disk config with inter-process locking and revision-checked writes.

Implementations

impl ConfigStore

pub fn new() -> Self

pub fn with_path(path: PathBuf) -> Self

pub fn path(&self) -> &Path

pub fn load(&self) -> Result<Config, ConfigError>

Load the config, transparently migrating a v1 file if found.

pub fn update<T>( &self, expected_revision: u64, mutate: impl FnOnce(&mut Config) -> Result<T, ConfigError>, ) -> Result<T, ConfigError>

Read-modify-write under the inter-process lock; the closure receives the current config and returns the next one. Revision is bumped and checked, so concurrent writers cannot silently overwrite each other.

Trait Implementations

impl Clone for ConfigStore

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConfigStore

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

Formats the value using the given formatter.

impl Default for ConfigStore

fn default() -> Self

Returns the “default value” for a type.