Struct structured_logger::Builder

pub struct Builder { /* private fields */ }

A struct to initialize the logger.

Implementations

impl Builder

pub fn new() -> Self

Returns a new Logger with default configuration. The default configuration is:

• level filter: get from the environment variable by get_env_level().
• default writer: write to stderr in JSON format.

pub fn with_level(level: &str) -> Self

Returns a new Logger with a given level filter. level is a string that can be parsed to log::LevelFilter. Such as “OFF”, “ERROR”, “WARN”, “INFO”, “DEBUG”, “TRACE”, ignore ascii case.

pub fn with_target_writer( self, target: &'static str, writer: Box<dyn Writer> ) -> Self

Returns a new Logger with a given target and writer. target is a string that be used as a log target. writer is a struct that implements the Writer trait. You can call this method multiple times to add multiple writers.

pub fn init(self)

Initialize the logger.

See the crate level documentation for more.

Panics

This will panic if the logger fails to initialize. Use Builder::try_init if you want to handle the error yourself.

pub fn try_init(self) -> Result<(), SetLoggerError>

Try to initialize the logger.

Unlike Builder::init this doesn’t panic when the logger fails to initialize. See the crate level documentation for more.

Trait Implementations

impl Default for Builder

fn default() -> Self

Returns the “default value” for a type.