Struct Metadata

pub struct Metadata {
    pub name: String,
    pub target: String,
    pub module_path: String,
    pub location: Option<Location>,
    pub kind: i32,
    pub level: i32,
    pub field_names: Vec<String>,
}

Metadata associated with a span or event.

Fields

name: String

The name of the span or event.

target: String

Describes the part of the system where the span or event that this metadata describes occurred.

module_path: String

The path to the Rust module where the span occurred.

location: Option<Location>

The Rust source location associated with the span or event.

kind: i32

Indicates whether metadata is associated with a span or with an event.

level: i32

Describes the level of verbosity of a span or event.

field_names: Vec<String>

The names of the key-value fields attached to the span or event this metadata is associated with.

Implementations

impl Metadata

pub fn kind(&self) -> Kind

Returns the enum value of kind, or the default if the field is set to an invalid enum value.

pub fn set_kind(&mut self, value: Kind)

Sets kind to the provided enum value.

pub fn level(&self) -> Level

Returns the enum value of level, or the default if the field is set to an invalid enum value.

pub fn set_level(&mut self, value: Level)

Sets level to the provided enum value.

Trait Implementations

impl Clone for Metadata

fn clone(&self) -> Metadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Metadata

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

Formats the value using the given formatter.

impl Default for Metadata

fn default() -> Self

Returns the “default value” for a type.

impl<'a> From<&'a Metadata<'a>> for Metadata

fn from(meta: &'a Metadata<'a>) -> Self

Converts to this type from the input type.

impl Hash for Metadata

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 Message for Metadata

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for Metadata

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Metadata

impl StructuralPartialEq for Metadata