Struct EnvFilterBuilder 

pub struct EnvFilterBuilder<'a> { /* private fields */ }

Implementations

impl<'a> EnvFilterBuilder<'a>

pub fn from_env() -> Self

Create the EnvFilter from the environment variable or the [DEFAULT_RUST_LOG] value if the environment is not set.

pub fn new<S: Into<Cow<'a, str>>>(rust_log: S) -> Self

Specify an exact RUST_LOG value to use.

This method will not inspect the environment variable.

pub fn verbose(self, target: Option<&'a str>) -> Self

Make the produced EnvFilter verbose.

If the module string is empty, all targets will log debug output. Otherwise only the specified target will log the debug output.

pub fn finish(self) -> Result<EnvFilter, BuildEnvFilterError>

Construct an EnvFilter as configured.

Trait Implementations

impl<'a> Debug for EnvFilterBuilder<'a>

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

Formats the value using the given formatter.