Enum Level 

#[non_exhaustive]
pub enum Level {
    Debug,
    Info,
    Notice,
    Warning,
    Error,
    Critical,
    Alert,
    Emergency,
}

A severity level on the log ladder.

Ordered lowest-severity first, matching the spec’s own ordering: debug through emergency. Ordering is what a client filter needs, and the spec defines the order, so there is nothing for this crate to choose.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Debug

Fine-grained detail, usually disabled.

Info

Ordinary operational detail.

Notice

Normal but significant events.

Warning

A condition that is not an error but deserves attention.

Error

A failure the peer should know about.

Critical

A failure requiring immediate action.

Alert

Action must be taken immediately.

Emergency

The system is unusable.

Implementations

impl Level

pub const ALL: [Self; 8]

Every level, lowest first — the order Ord uses.

pub const fn as_str(self) -> &'static str

The level’s wire spelling, which is the variant name lowercased.

The spelling is derived rather than stored so the two cannot drift, and it is the same string Self::from_str accepts — the round trip is the contract a codec needs, and a stored copy would be a second answer to keep in step.

pub fn parse(text: &str) -> Result<Self, LevelError>

Parses a level from its wire spelling.

Errors

Returns LevelError for any other string, including the right one in the wrong case. A level is a closed set the spec enumerates, and accepting "Info" would mean emitting something no conforming peer has agreed to recognise.

Trait Implementations

impl Clone for Level

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 Level

impl Debug for Level

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Level

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Level

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

Formats the value using the given formatter.

impl Eq for Level

impl FromStr for Level

type Err = LevelError

The associated error which can be returned from parsing.

fn from_str(text: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for Level

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Level

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for Level

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Level

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Level

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Level