pub fn init_with_config(config: &LoggingConfig) -> anyhow::Result<()> {
    let formatter = format::debug_fn(|writer, field, value| match field.name() {
        LOG_FIELD_MESSAGE => write!(writer, "{:?}", value),
        LOG_FIELD_TARGET | LOG_FIELD_MODULE | LOG_FIELD_FILE | LOG_FIELD_LINE => Ok(()),
        _ => write!(writer, "; {}={:?}", field, value),
    });

    let filter = EnvFilter::new(
        env::var(LOG_CONFIGURATION_ENVVAR)
            .as_deref()
            .unwrap_or("warn,casper_node=info"),
    );

    match config.format {
        // Setup a new tracing-subscriber writing to `stdout` for logging.
        LoggingFormat::Text => tracing_subscriber::fmt()
            .with_writer(io::stdout)
            .with_env_filter(filter)
            .fmt_fields(formatter)
            .event_format(FmtEvent::new(config.color, config.abbreviate_modules))
            .try_init(),
        // JSON logging writes to `stdout` as well but uses the JSON format.
        LoggingFormat::Json => tracing_subscriber::fmt()
            .with_writer(io::stdout)
            .with_env_filter(filter)
            .json()
            .try_init(),
    }
    .map_err(|error| anyhow!(error))
}
/// Initializes the logging system.
///
/// This function should only be called once during the lifetime of the application. Do not call
/// this outside of the application or testing code, the installed logger is global.
///
/// See the `README.md` for hints on how to configure logging at runtime.
Initializes the logging system.
This function should only be called once during the lifetime of the application. Do not call
this outside of the application or testing code, the installed logger is global.

See the `README.md` for hints on how to configure logging at runtime.
Initializes the logging system . This function should only be called once during the lifetime of the application . Do not call this outside of the application or testing code the installed logger is global . See the ` README . md ` for hints on how to configure logging at runtime .
pub fn init_with_config(config: &LoggingConfig) -> anyhow::Result<()> {
    let formatter = format::debug_fn(|writer, field, value| match field.name() {
        LOG_FIELD_MESSAGE => write!(writer, "{:?}", value),
        LOG_FIELD_TARGET | LOG_FIELD_MODULE | LOG_FIELD_FILE | LOG_FIELD_LINE => Ok(()),
        _ => write!(writer, "; {}={:?}", field, value),
    });
    let filter = EnvFilter::new(
        env::var(LOG_CONFIGURATION_ENVVAR)
            .as_deref()
            .unwrap_or("warn,casper_node=info"),
    );
    match config.format {
        // Setup a new tracing-subscriber writing to `stdout` for logging.
        LoggingFormat::Text => tracing_subscriber::fmt()
            .with_writer(io::stdout)
            .with_env_filter(filter)
            .fmt_fields(formatter)
            .event_format(FmtEvent::new(config.color, config.abbreviate_modules))
            .try_init(),
        // JSON logging writes to `stdout` as well but uses the JSON format.
        LoggingFormat::Json => tracing_subscriber::fmt()
            .with_writer(io::stdout)
            .with_env_filter(filter)
            .json()
            .try_init(),
    }
    .map_err(|error| anyhow!(error))
}
pub fn init_with_config ( config : & LoggingConfig ) -> anyhow :: Result < ( ) > { let formatter = format :: debug_fn ( | writer , field , value | match field . name ( ) { LOG_FIELD_MESSAGE => write ! ( writer " " value ) , LOG_FIELD_TARGET | LOG_FIELD_MODULE | LOG_FIELD_FILE | LOG_FIELD_LINE => Ok ( ( ) ) , _ => write ! ( writer " " field value ) , } ) ; let filter = EnvFilter :: new ( env :: var ( LOG_CONFIGURATION_ENVVAR ) . as_deref ( ) . unwrap_or ( " " ) , ) ; match config . format { // Setup a new tracing-subscriber writing to `stdout` for logging. LoggingFormat :: Text => tracing_subscriber :: fmt ( ) . with_writer ( io :: stdout ) . with_env_filter ( filter ) . fmt_fields ( formatter ) . event_format ( FmtEvent :: new ( config . color , config . abbreviate_modules ) ) . try_init ( ) , // JSON logging writes to `stdout` as well but uses the JSON format. LoggingFormat :: Json => tracing_subscriber :: fmt ( ) . with_writer ( io :: stdout ) . with_env_filter ( filter ) . json ( ) . try_init ( ) , } . map_err ( | error | anyhow ! ( error ) ) }
Initializes the logging system.
Initializes the logging system .
config
&LoggingConfig
config
&LoggingConfig