Enum LogLevel 

pub enum LogLevel {
    Off,
    Error,
    Warn,
    Info,
    Debug,
    Trace,
}

The --log-level flag and the per-invocation decision it feeds. Re-exported for main.rs, which is where the subscriber is installed. The --log-level flag and the per-invocation decision it feeds. Re-exported for main.rs, which is where the subscriber is installed. The --log-level flag and the per-invocation decision it feeds. Re-exported for main.rs, which is where the subscriber is installed. --log-level: how much this invocation logs.

A crate-local enum rather than tracing::Level for two reasons: off is not a level, and clap’s ValueEnum cannot be implemented for a foreign type anyway. Being a value_enum is also what puts the six values into the generated shell completions, which is what --color already buys.

Variants

Off

Error

Warn

Info

Debug

Trace

Implementations

impl LogLevel

pub fn directive(self) -> String

The EnvFilter directive this level asks for.

Scoped to this crate’s own target, so --log-level debug does not also unleash sqlx, hyper and rustls on someone who wanted to see why one command behaved oddly. RUST_LOG stays the way to write a directive that reaches further — it is the same string this would have to become, and a flag that took one would be a second spelling of it.

Trait Implementations

impl Clone for LogLevel

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LogLevel

impl Debug for LogLevel

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

Formats the value using the given formatter.

impl Eq for LogLevel

impl PartialEq for LogLevel

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for LogLevel

impl ValueEnum for LogLevel

fn value_variants<'a>() -> &'a [Self]

All possible argument values, in display order.

fn to_possible_value<'a>(&self) -> Option<PossibleValue>

The canonical argument value.

fn from_str(input: &str, ignore_case: bool) -> Result<Self, String>

Parse an argument into Self.