Struct DMSCContextCarrier 

pub struct DMSCContextCarrier {
    pub trace_context: Option<DMSCTraceContext>,
    pub baggage: DMSCBaggage,
}

Context carrier for distributed tracing.

This struct carries both trace context and baggage, providing a convenient way to extract and inject distributed tracing information from/to HTTP headers.

Fields

trace_context: Option<DMSCTraceContext>

Trace context for the request

baggage: DMSCBaggage

Baggage for additional context

Implementations

impl DMSCContextCarrier

pub fn new() -> Self

Creates a new empty context carrier.

Returns

A new DMSCContextCarrier instance

pub fn with_trace_context(self, trace_context: DMSCTraceContext) -> Self

Adds trace context to the carrier.

Parameters

• trace_context: The trace context to add

Returns

The updated DMSCContextCarrier instance

pub fn with_baggage(self, baggage: DMSCBaggage) -> Self

Adds baggage to the carrier.

Parameters

• baggage: The baggage to add

Returns

The updated DMSCContextCarrier instance

pub fn from_tracing_context(tracing_context: &DMSCTracingContext) -> Self

Creates a context carrier from tracing context.

This method converts a thread-local DMSCTracingContext into a DMSCContextCarrier that can be propagated across service boundaries.

Parameters

• tracing_context: The tracing context to convert

Returns

A new DMSCContextCarrier instance with trace context and baggage from the tracing context

pub fn into_tracing_context(self) -> DMSCTracingContext

Creates a tracing context from this carrier.

This method converts a DMSCContextCarrier into a thread-local DMSCTracingContext that can be used for tracing within the service.

Returns

A new DMSCTracingContext instance with trace context and baggage from the carrier

pub fn from_headers(headers: &HashMap<String, String>) -> Self

Extracts a context carrier from HTTP headers.

Parameters

• headers: A HashMap of HTTP headers

Returns

A new DMSCContextCarrier instance with extracted trace context and baggage

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

Injects the context carrier into HTTP headers.

Parameters

• headers: A mutable HashMap of HTTP headers to inject into

pub fn from_headers_and_set_current(headers: &HashMap<String, String>) -> Self

Extracts a context carrier from HTTP headers and sets it as current tracing context.

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

Parameters

• headers: A HashMap of HTTP headers

Returns

A new DMSCContextCarrier instance with extracted trace context and baggage

pub fn inject_current_into_headers(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 HashMap of HTTP headers to inject into

Trait Implementations

impl Clone for DMSCContextCarrier

fn clone(&self) -> DMSCContextCarrier

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DMSCContextCarrier

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

Formats the value using the given formatter.

impl Default for DMSCContextCarrier

fn default() -> Self

Returns the “default value” for a type.

impl<'py> IntoPyObject<'py> for DMSCContextCarrier

type Target = DMSCContextCarrier

The Python output type

type Output = Bound<'py, <DMSCContextCarrier 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 DMSCContextCarrier

type Frozen = False

Whether the pyclass is frozen.

impl PyClassImpl for DMSCContextCarrier

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 = c"Context carrier for distributed tracing.\n\nThis struct carries both trace context and baggage, providing a convenient way to\nextract and inject distributed tracing information from/to HTTP headers.\x00"

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<DMSCContextCarrier>

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 DMSCContextCarrier

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

impl PyMethods<DMSCContextCarrier> for PyClassImplCollector<DMSCContextCarrier>

fn py_methods(self) -> &'static PyClassItems

impl PyTypeInfo for DMSCContextCarrier

const NAME: &'static str = "DMSCContextCarrier"

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 DMSCContextCarrier

impl ExtractPyClassWithClone for DMSCContextCarrier