Crate libdd_sampling 

Core sampling logic for Datadog tracing

This crate provides generic sampling infrastructure including:

• Trait abstractions for trace IDs, attributes, and span properties
• Rate-based sampling algorithms
• Rate limiting functionality
• Glob pattern matching for sampling rules
• Sampling-related constants
• Rule-based sampling with pattern matching
• Agent-provided sampling rates
• Complete Datadog sampler implementation

Re-exports

pub use dd_sampling::mechanism;

pub use dd_sampling::priority;

pub use dd_sampling::SamplingDecision;

pub use dd_sampling::SamplingMechanism;

pub use dd_sampling::SamplingPriority;

Modules

dd_constants

dd_sampling

Sampling types and mechanisms for Datadog distributed tracing.

Structs

DatadogSampler

A composite sampler that applies rules in order of precedence

ParsedSamplingRules

SamplingRule

Represents a sampling rule with criteria for matching spans

SamplingRuleConfig

Configuration for a single sampling rule

ServicesSampler

Traits

AttributeFactory

A trait for creating sampling attributes.

AttributeLike

A trait for accessing span attribute key-value pairs.

SamplingData

A trait for accessing sampling data, combining trace ID and span properties.

SpanProperties

A trait for accessing span properties needed for sampling decisions.

TraceIdLike

A trait for converting trace IDs to a numeric representation.

ValueLike

A trait for extracting typed values from attribute values.

Type Aliases

SamplingRulesCallback

Type alias for sampling rules update callback Consolidated callback type used across crates for remote config sampling updates