Struct opentelemetry::api::core::Key

pub struct Key(_);

Key used for metric LabelSets and trace Span attributes.

Methods

impl Key

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

Create a new Key.

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

Create a KeyValue pair for Into<String> values.

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

Create a KeyValue pair for byte arrays.

pub fn inner(&self) -> &Cow<'static, str>

Returns a reference to the key's Cow type for use in LabelSets.

pub fn into_inner(self) -> Cow<'static, str>

Returns the inner Cow type.

Trait Implementations

impl Into<Cow<'static, str>> for Key

fn into(self) -> Cow<'static, str>

Converts Key instances into Cow

impl Into<String> for Key

fn into(self) -> String

Converts Key instances into String.

impl From<&'static str> for Key

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

Convert a &str to a Key.

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.