Struct RollingFileWriterBuilder 

pub struct RollingFileWriterBuilder { /* private fields */ }

Builder for RollingFileWriter.

Implementations

impl RollingFileWriterBuilder

pub fn directory(self, dir: impl Into<PathBuf>) -> RollingFileWriterBuilder

Output directory (created if absent).

pub fn filename_prefix(self, p: impl Into<String>) -> RollingFileWriterBuilder

Filename prefix (e.g. obs). Required.

pub fn filename_suffix(self, s: impl Into<String>) -> RollingFileWriterBuilder

Filename suffix (default .ndjson).

pub fn policy(self, p: RollingPolicy) -> RollingFileWriterBuilder

Set the rolling policy.

pub fn keep(self, n: usize) -> RollingFileWriterBuilder

Retain the last n rolled files. Older files are deleted at rotation time.

pub fn build(self) -> Result<RollingFileWriter, Error>

Build the writer. Creates the directory if absent.

Errors

Returns io::Error if the directory cannot be created or the initial file cannot be opened.

Trait Implementations

impl Clone for RollingFileWriterBuilder

fn clone(&self) -> RollingFileWriterBuilder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RollingFileWriterBuilder

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

Formats the value using the given formatter.

impl Default for RollingFileWriterBuilder

fn default() -> RollingFileWriterBuilder

Returns the “default value” for a type.