Module config 

Available on crate feature tracing_subscriber_ext only.

Flexible tracing configuration with builder pattern.

Provides TracingConfig for configurable tracing setup with format options, output destinations, level filtering, and OpenTelemetry integration.

Example

use init_tracing_opentelemetry::TracingConfig;

// Use preset with global subscriber (default)
let _guard = TracingConfig::development().init_subscriber()?;

// Custom configuration with global subscriber
let _guard = TracingConfig::default()
    .with_json_format()
    .with_stderr()
    .with_log_directives("debug")
    .init_subscriber()?;

// Non-global subscriber (thread-local)
let guard = TracingConfig::development()
    .with_global_subscriber(false)
    .init_subscriber()?;
// Guard must be kept alive for subscriber to remain active
assert!(guard.is_non_global());

// Without OpenTelemetry (just logging)
let guard = TracingConfig::minimal()
    .with_otel(false)
    .init_subscriber()?;
// Works fine - guard.otel_guard is None
assert!(!guard.has_otel());
assert!(guard.otel_guard.is_none());

// Direct field access is also possible
if let Some(otel_guard) = &guard.otel_guard {
    // Use otel_guard...
}

Structs

FeatureSet

Configuration for optional tracing features

Guard

Combined guard that handles both OtelGuard and optional DefaultGuard

LevelConfig

Configuration for log level filtering

OtelConfig

Configuration for OpenTelemetry integration

TracingConfig

Main configuration builder for tracing setup Default create a new tracing configuration with sensible defaults

Enums

LogFormat

Configuration for log output format

LogTimer

WriterConfig

Configuration for log output destination