Struct W3CTracePropagator 

pub struct W3CTracePropagator;

W3C Trace Context Propagator for distributed tracing.

This struct implements the W3C Trace Context propagation specification, providing methods for extracting and injecting trace context from/to various carrier formats like HTTP headers.

Implementations

impl W3CTracePropagator

pub fn new() -> Self

Creates a new W3CTracePropagator instance.

Returns

A new W3CTracePropagator instance

pub fn extract(&self, headers: &HashMap<String, String>) -> DMSCContextCarrier

Extracts trace context from HTTP headers.

This method parses the W3C traceparent and baggage headers from the provided HTTP headers and creates a DMSCContextCarrier with the extracted information.

Parameters

• headers: A reference to a HashMap of HTTP headers

Returns

A DMSCContextCarrier containing the extracted trace context and baggage

pub fn inject( &self, carrier: &DMSCContextCarrier, headers: &mut HashMap<String, String>, )

Injects trace context into HTTP headers.

This method takes a DMSCContextCarrier and injects its trace context and baggage into the provided HTTP headers HashMap.

Parameters

• carrier: The context carrier containing trace information
• headers: A mutable reference to a HashMap of HTTP headers

pub fn extract_and_set_current( &self, headers: &HashMap<String, String>, ) -> DMSCContextCarrier

Extracts trace context and sets it as the current tracing context.

This convenience method extracts trace context from HTTP headers and sets it as the current thread-local tracing context.

Parameters

• headers: A reference to a HashMap of HTTP headers

Returns

A DMSCContextCarrier containing the extracted trace context and baggage

pub fn inject_current(&self, headers: &mut HashMap<String, String>)

Injects the current tracing context into HTTP headers.

This convenience method gets the current thread-local tracing context, converts it to a context carrier, and injects it into HTTP headers.

Parameters

• headers: A mutable reference to a HashMap of HTTP headers

Trait Implementations

impl Clone for W3CTracePropagator

fn clone(&self) -> W3CTracePropagator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for W3CTracePropagator

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

Formats the value using the given formatter.

impl Default for W3CTracePropagator

fn default() -> W3CTracePropagator

Returns the “default value” for a type.

impl<'py> IntoPyObject<'py> for W3CTracePropagator

type Target = W3CTracePropagator

The Python output type

type Output = Bound<'py, <W3CTracePropagator as IntoPyObject<'py>>::Target>

The smart pointer type to use.

type Error = PyErr

The type returned in the event of a conversion error.

fn into_pyobject( self, py: Python<'py>, ) -> Result<<Self as IntoPyObject<'_>>::Output, <Self as IntoPyObject<'_>>::Error>

Performs the conversion.

impl PyClass for W3CTracePropagator

type Frozen = False

Whether the pyclass is frozen.

impl PyClassImpl for W3CTracePropagator

const IS_BASETYPE: bool = false

#[pyclass(subclass)]

const IS_SUBCLASS: bool = false

#[pyclass(extends=…)]

const IS_MAPPING: bool = false

#[pyclass(mapping)]

const IS_SEQUENCE: bool = false

#[pyclass(sequence)]

const IS_IMMUTABLE_TYPE: bool = false

#[pyclass(immutable_type)]

const RAW_DOC: &'static CStr = /// various carrier formats like HTTP headers.

Docstring for the class provided on the struct or enum.

const DOC: &'static CStr

Fully rendered class doc, including the text_signature if a constructor is defined.

type BaseType = PyAny

Base class

type ThreadChecker = SendablePyClass<W3CTracePropagator>

This handles following two situations:

type PyClassMutability = <<PyAny as PyClassBaseType>::PyClassMutability as PyClassMutability>::MutableChild

Immutable or mutable

type Dict = PyClassDummySlot

Specify this class has #[pyclass(dict)] or not.

type WeakRef = PyClassDummySlot

Specify this class has #[pyclass(weakref)] or not.

type BaseNativeType = PyAny

The closest native ancestor. This is PyAny by default, and when you declare #[pyclass(extends=PyDict)], it’s PyDict.

fn items_iter() -> PyClassItemsIter

fn lazy_type_object() -> &'static LazyTypeObject<Self>

fn dict_offset() -> Option<isize>

fn weaklist_offset() -> Option<isize>

impl PyClassNewTextSignature for W3CTracePropagator

const TEXT_SIGNATURE: &'static str = "()"

impl PyMethods<W3CTracePropagator> for PyClassImplCollector<W3CTracePropagator>

fn py_methods(self) -> &'static PyClassItems

impl PyTypeInfo for W3CTracePropagator

const NAME: &'static str = "W3CTracePropagator"

Class name.

const MODULE: Option<&'static str> = ::core::option::Option::None

Module name, if any.

fn type_object_raw(py: Python<'_>) -> *mut PyTypeObject

Returns the PyTypeObject instance for this type.

fn type_object(py: Python<'_>) -> Bound<'_, PyType>

Returns the safe abstraction over the type object.

fn is_type_of(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type or a subclass of this type.

fn is_exact_type_of(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type.

impl DerefToPyAny for W3CTracePropagator

impl ExtractPyClassWithClone for W3CTracePropagator