Struct Journal 

pub struct Journal { /* private fields */ }

Where the journal files live. None paths turn the journal off.

Implementations

impl Journal

pub fn in_data_dir() -> Self

The journal in the scope state directory.

pub fn at(history: PathBuf, events: PathBuf) -> Self

A journal at explicit paths.

pub fn load_history(&self) -> Vec<String>

Loads the history. A missing file is an empty history.

pub fn save_history(&self, history: &[String]) -> Result<()>

Saves the newest HISTORY_LIMIT entries.

Errors

Returns the file system error.

pub fn tail(&self, n: usize) -> Vec<String>

The last n lines of the event log, oldest first. A missing or unreadable file gives no lines.

pub fn record(&self, event: &Event<'_>) -> Result<()>

Appends one event record.

Errors

Returns the file system or serialization error.

Trait Implementations

impl Clone for Journal

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 Journal

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

Formats the value using the given formatter.

impl Default for Journal

fn default() -> Self

Returns the “default value” for a type.