Module domain 

Domain layer for observability core - Pure business logic

This module contains ONLY pure business logic with no external dependencies. No WASM, HTTP, or framework-specific code should be here.

Structs

ContextEnricher

Processor that enriches with context

EnhancedContextEnricher

Enhanced processor that combines context enrichment with kv extraction

LevelFilter

Filter processor that filters out logs below certain level

LogEntry

Core log entry - pure data structure

LogKvExtractor

Processor that extracts structured fields from log::kv

LogSource

Source of the log entry

MetricsEntry

Basic metric entry for correlation with logs

MetricsSource

Source of the metric

ProcessorChain

Processor chain pattern (inspired by structlog)

StructuredFieldsProcessor

Processor that structures fields

TimestampProcessor

Processor that adds timestamps

TraceCorrelation

Serializable trace identifiers for log/metric correlation.

Enums

BasicMetricType

Simple metric types supported by core

Traits

LogProcessor

Core processor interface - transforms log entries

Functions

build_default_processor_chain

Build a default processor chain with common processors

build_enhanced_processor_chain

Build an enhanced processor chain with additional features

create_counter_metric

Convenience function to create a counter metric

create_gauge_metric

Convenience function to create a gauge metric

create_histogram_metric

Convenience function to create a histogram metric

create_log_entry

Create a log entry from basic components

Type Aliases

TraceContext

Backwards-compatible alias.