Enum vector::event::metric::TagValueSet

pub enum TagValueSet {
    Empty,
    Single(TagValue),
    Set(IndexSet<TagValue>),
}

Tag values for a metric series. This may be empty, a single value, or a set of values. This is used to provide the storage for TagValueSet.

Variants

Empty

This represents a set containing no value.

Single(TagValue)

This represents a set containing a single value. This is stored separately to avoid the overhead of allocating a hash table for the common case of a single value for a tag.

Set(IndexSet<TagValue>)

This holds an actual set of values. This variant will be automatically created when a single value is added to, and reduced down to a single value when the length is reduced to 1. An index set is used for this set, as it preserves the insertion order of the contained elements. This allows us to retrieve the last element inserted which in turn allows us to emulate the set having a single value.

Implementations

impl TagValueSet

pub fn into_single(self) -> Option<String>

Convert this set into a single value, mimicking the behavior of this set being just a plain single string while still storing all of the values.

pub fn as_single(&self) -> Option<&str>

Get the “single” value of this set, mimicking the behavior of this set being just a plain single string while still storing all of the values.

pub fn is_empty(&self) -> bool

pub fn len(&self) -> usize

pub fn iter(&self) -> TagValueRefIter<'_>

Trait Implementations

impl ByteSizeOf for TagValueSet

fn allocated_bytes(&self) -> usize

Returns the allocated bytes of this type

fn size_of(&self) -> usize

Returns the in-memory size of this type

impl Clone for TagValueSet

fn clone(&self) -> TagValueSet

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Configurable for TagValueSet

fn referenceable_name() -> Option<&'static str>

Gets the referenceable name of this value, if any.

fn metadata() -> Metadata

Gets the metadata for this value.

fn generate_schema( schema_gen: &RefCell<SchemaGenerator>, ) -> Result<SchemaObject, GenerateError>

Generates the schema for this value.

fn is_optional() -> bool

where Self: Sized,

Whether or not this value is optional.

fn validate_metadata(_metadata: &Metadata) -> Result<(), GenerateError>

where Self: Sized,

Validates the given metadata against this type.

fn as_configurable_ref() -> ConfigurableRef

where Self: Sized + 'static,

Create a new configurable reference table.

impl Debug for TagValueSet

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

Formats the value using the given formatter.

impl Default for TagValueSet

fn default() -> TagValueSet

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TagValueSet

fn deserialize<D>(de: D) -> Result<TagValueSet, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for TagValueSet

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

Formats the value using the given formatter.

impl<const N: usize> From<[String; N]> for TagValueSet

fn from(values: [String; N]) -> TagValueSet

Converts to this type from the input type.

impl<const N: usize> From<[TagValue; N]> for TagValueSet

fn from(values: [TagValue; N]) -> TagValueSet

Converts to this type from the input type.

impl From<Vec<String>> for TagValueSet

fn from(values: Vec<String>) -> TagValueSet

Converts to this type from the input type.

impl From<Vec<TagValue>> for TagValueSet

fn from(values: Vec<TagValue>) -> TagValueSet

Converts to this type from the input type.

impl FromIterator<String> for TagValueSet

fn from_iter<T>(values: T) -> TagValueSet

where T: IntoIterator<Item = String>,

Creates a value from an iterator.

impl FromIterator<TagValue> for TagValueSet

fn from_iter<T>(values: T) -> TagValueSet

where T: IntoIterator<Item = TagValue>,

Creates a value from an iterator.

impl FromLua for TagValueSet

fn from_lua(value: Value, _: &Lua) -> Result<TagValueSet, Error>

Performs the conversion.

impl Hash for TagValueSet

fn hash<H>(&self, hasher: &mut H)

where H: Hasher,

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<'a> IntoIterator for &'a TagValueSet

type IntoIter = TagValueRefIter<'a>

Which kind of iterator are we turning this into?

type Item = Option<&'a str>

The type of the elements being iterated over.

fn into_iter(self) -> <&'a TagValueSet as IntoIterator>::IntoIter

Creates an iterator from a value.

impl IntoIterator for TagValueSet

type IntoIter = TagValueIntoIter

Which kind of iterator are we turning this into?

type Item = TagValue

The type of the elements being iterated over.

fn into_iter(self) -> <TagValueSet as IntoIterator>::IntoIter

Creates an iterator from a value.

impl Ord for TagValueSet

fn cmp(&self, that: &TagValueSet) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for TagValueSet

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

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

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

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

impl PartialOrd for TagValueSet

fn partial_cmp(&self, that: &TagValueSet) -> Option<Ordering>

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

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

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

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

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

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

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

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

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

impl Serialize for TagValueSet

fn serialize<S>( &self, ser: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl ToValue for TagValueSet

fn to_value(&self) -> Value

Convert this value into a serde_json::Value. Must not fail.

impl Eq for TagValueSet

impl StructuralPartialEq for TagValueSet