Module fmt

This module only provides compatibility with tracing-subscriber. The methods here are just copies that only use different types for the Subscriber and SubscriberBuilder.

Structs

Layer

A Layer that logs JSON formatted representations of tracing events.

Subscriber

A type that can be used to create a Subscriber which collects tracing spans and events and emits them in JSON.

SubscriberBuilder

Configures and constructs Subscribers.

Functions

fmt

Returns a new SubscriberBuilder for configuring a json formatting subscriber.

init

Install a global tracing subscriber that listens for events and filters based on the value of the RUST_LOG environment variable.

layer

Returns a new json formatting layer that can be composed with other layers to construct a Subscriber.

try_init

Install a global tracing subscriber that listens for events and filters based on the value of the RUST_LOG environment variable, if one is not already set.