Struct opentelemetry::api::core::Key

pub struct Key(_);

Key used for metric LabelSets and trace Span attributes.

Implementations

impl Key

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

Create a new Key.

pub fn bool<T: Into<bool>>(&self, value: T) -> KeyValue

Create a KeyValue pair for bool values.

pub fn i64(&self, value: i64) -> KeyValue

Create a KeyValue pair for i64 values.

pub fn u64(&self, value: u64) -> KeyValue

Create a KeyValue pair for u64 values.

pub fn f64(&self, value: f64) -> KeyValue

Create a KeyValue pair for f64 values.

pub fn string<T: Into<String>>(&self, value: T) -> KeyValue

Create a KeyValue pair for String values.

pub fn bytes<T: Into<Vec<u8>>>(&self, value: T) -> KeyValue

Create a KeyValue pair for byte arrays.

pub fn as_str(&self) -> &str

Returns a reference to the underlying key name

Trait Implementations

impl Clone for Key

fn clone(&self) -> Key

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Key

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

Formats the value using the given formatter.

impl Eq for Key

impl From<&'static str> for Key

fn from(key_str: &'static str) -> Self

Convert a &str to a Key.

impl From<Key> for String

fn from(key: Key) -> Self

Converts Key instances into String.

impl From<String> for Key

fn from(string: String) -> Self

Convert a String to a Key.

impl Hash for Key

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, 

Feeds a slice of this type into the given [Hasher].

impl Ord for Key

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

This method returns an [Ordering] between self and other.

#[must_use]fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]fn clamp(self, min: Self, max: Self) -> Self

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

Restrict a value to a certain interval.

impl PartialEq<Key> for Key

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<Key> for Key

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl StructuralEq for Key

impl StructuralPartialEq for Key