Template Class CompositePropagator

• Defined in File composite_propagator.h

Inheritance Relationships

Base Type

• public opentelemetry::trace::propagation::TextMapPropagator< T >

Class Documentation

template<typename T>
class opentelemetry::trace::propagation::CompositePropagator : public opentelemetry::trace::propagation::TextMapPropagator<T>

Public Types

using Getter = nostd::string_view (*)(const T &carrier, nostd::string_view trace_type)

using Setter = void (*)(T &carrier, nostd::string_view trace_type, nostd::string_view trace_description)

Public Functions

inline CompositePropagator(std::vector<std::unique_ptr<TextMapPropagator<T>>> propagators)

inline void Inject(Setter setter, T &carrier, const context::Context &context) noexcept override

Run each of the configured propagators with the given context and carrier. Propagators are run in the order they are configured, so if multiple propagators write the same carrier key, the propagator later in the list will “win”.

Parameters

• setter – Rules that manages how context will be injected to carrier.

• carrier – Carrier into which context will be injected

• context – Context to inject

inline context::Context Extract(Getter getter, const T &carrier, context::Context &context) noexcept override

Run each of the configured propagators with the given context and carrier. Propagators are run in the order they are configured, so if multiple propagators write the same context key, the propagator later in the list will “win”.

Parameters

• setter – Rules that manages how context will be extracte from carrier.

• context – Context to add values to

• carrier – Carrier from which to extract context