Logging

The library’s logs are emitted through the tracing crate. In Rust, the library has no logging initialization API; initialize it with tracing-subscriber or the like. Python and C# provide init_tracing for initializing logging.

API

Rust

tracing_subscriber::fmt()
    .with_env_filter(
        EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("info")),
    )
    .init();

Python

log_guard = init_tracing(
    default_filter="info",
    writer=LogWriter.Stdout,
)

C#

var option = new TracingOption
{
    DefaultFilter = "info",
    Writer = LogWriter.Stdout,
};
using var logGuard = Tracing.Init(option);

init_tracing in Python and C# returns a guard. Keep the guard until the end of the program.

TracingOption (Python / C#)

Field	Type	Default	Description
default_filter	&'static str	"info"	Filter used when the RUST_LOG environment variable is not set
writer	LogWriter	Stdout	Output destination. LogWriter::Stdout / LogWriter::Stderr

If the RUST_LOG environment variable is set, it takes precedence over default_filter.