Loggerithm

Logging Library

Installation

# Cargo.toml

[dependencies]
loggerithm = "1"

Preparation

At the top of each module that logs text, you must add one of the following:

use loggerithm::logger;
// This will tell the module to use the logger from the parent module.
// If there is no parent module, it will use the default logger.
logger!(super);

use loggerithm::logger;
logger!(Logger::new()
    // All of the settings here. See `src/logger.rs`.
);

Basic Logging

Loggerithm provides the standard logging levels, plus TRACE NOTICE SUCCESS and FAILURE. The log! macro is similar to the format! macro, but takes a logging level as the first argument.

use loggerithm::level::{TRACE, DEBUG, INFO, NOTICE, SUCCESS, FAILURE, WARN, ERROR, FATAL};
use loggerithm::{log, logger};

logger!(super);

fn main() {
    let x = 25;
    log!(SUCCESS, "The value of x is equal to {}.", x);
}

See examples/basic_logging.rs.

Custom Logging Levels

use loggerithm::{logger, log_level, log};
use loggerithm::level::INFO;

logger!(super);

log_level!(MY_AMAZING_CUSTOM_LOGGING_LEVEL, LogLevel::new(30)
    .formatted(|v| v.magenta().on_white().reverse())
);

fn main() {
    log!(INFO, "This example shows how to create a custom logging level and add formatting to it.");
    log!(MY_AMAZING_CUSTOM_LOGGING_LEVEL, "This used my custom level, now with formatting!");
}

See examples/custom_level.rs and examples/custom_level_formatting.rs.

Custom Logger

use loggerithm::{logger, log};
use loggerithm::level::{INFO, WARN};

logger!(Logger::new()
    .set_min_severity(WARN::severity())
    .add_target(|context| {
        println!("{} | {} | {}", context.time_local(), context.level_name_fp(), context.message())
    })
);

fn main() {
    log!(WARN, "This is logged.");
    log!(INFO, "This is not logged because it is below the minimum severity.");
}

See examples/custom_logger.rs

Modules

See examples/module_tree.rs for information on how loggers work across modules.