Enum SpanKind 

#[non_exhaustive]
pub enum SpanKind {
    Unspecified,
    Internal,
    Server,
    Client,
    Producer,
    Consumer,
    UnknownValue(UnknownValue),
}

Type of span. Can be used to specify additional relationships between spans in addition to a parent/child relationship.

Working with unknown values

This enum is defined as #[non_exhaustive] because Google Cloud may add additional enum variants at any time. Adding new variants is not considered a breaking change. Applications should write their code in anticipation of:

• New values appearing in future releases of the client library, and
• New values received dynamically, without application changes.

Please consult the Working with enums section in the user guide for some guidelines.

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.

Unspecified

Unspecified. Do NOT use as default. Implementations MAY assume SpanKind.INTERNAL to be default.

Internal

Indicates that the span is used internally. Default value.

Server

Indicates that the span covers server-side handling of an RPC or other remote network request.

Client

Indicates that the span covers the client-side wrapper around an RPC or other remote request.

Producer

Indicates that the span describes producer sending a message to a broker. Unlike client and server, there is no direct critical path latency relationship between producer and consumer spans (e.g. publishing a message to a pubsub service).

Consumer

Indicates that the span describes consumer receiving a message from a broker. Unlike client and server, there is no direct critical path latency relationship between producer and consumer spans (e.g. receiving a message from a pubsub service subscription).

UnknownValue(UnknownValue)

If set, the enum was initialized with an unknown value.

Applications can examine the value using SpanKind::value or SpanKind::name.

Implementations

impl SpanKind

pub fn value(&self) -> Option<i32>

Gets the enum value.

Returns None if the enum contains an unknown value deserialized from the string representation of enums.

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

Gets the enum value as a string.

Returns None if the enum contains an unknown value deserialized from the integer representation of enums.

Trait Implementations

impl Clone for SpanKind

fn clone(&self) -> SpanKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpanKind

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

Formats the value using the given formatter.

impl Default for SpanKind

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for SpanKind

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for SpanKind

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

Formats the value using the given formatter.

impl From<&str> for SpanKind

fn from(value: &str) -> Self

Converts to this type from the input type.

impl From<i32> for SpanKind

fn from(value: i32) -> Self

Converts to this type from the input type.

impl PartialEq for SpanKind

fn eq(&self, other: &SpanKind) -> 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 Serialize for SpanKind

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 SpanKind