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mod settings;
mod structured_message;
mod terminal_logger;
use std::{
collections::BTreeMap,
time::{Duration, SystemTime, UNIX_EPOCH},
};
use log::{self, Level, LevelFilter, Log, Metadata, Record, SetLoggerError};
pub use self::terminal_logger::TerminalLogger;
use crate::newtypes::CorrelationId;
pub use settings::{Settings, Style};
#[doc(hidden)]
pub const PAYLOAD_KEY: &str = "payload=";
pub(crate) const METRIC_METADATA_TARGET: &str = "METRIC";
pub(crate) const CASPERLABS_METADATA_TARGET: &str = "casperlabs_";
pub(crate) const MESSAGE_TEMPLATE_KEY: &str = "message_template";
pub(crate) const DEFAULT_MESSAGE_TEMPLATE: &str = "{message}";
pub(crate) const DEFAULT_MESSAGE_KEY: &str = "message";
pub fn initialize(settings: Settings) -> Result<(), SetLoggerError> {
let logger = Box::new(TerminalLogger::new(&settings));
initialize_with_logger(logger, settings)
}
#[doc(hidden)]
pub fn initialize_with_logger(
logger: Box<dyn Log>,
settings: Settings,
) -> Result<(), SetLoggerError> {
if settings.max_level() == LevelFilter::Off && !settings.enable_metrics() {
return Ok(());
}
log::set_boxed_logger(logger)?;
log::set_max_level(settings.max_level());
Ok(())
}
#[inline]
pub fn log_details(
log_level: Level,
message_format: String,
mut properties: BTreeMap<&str, String>,
) {
let logger = log::logger();
let metadata = Metadata::builder()
.target(CASPERLABS_METADATA_TARGET)
.level(log_level)
.build();
if !logger.enabled(&metadata) {
return;
}
properties.insert(MESSAGE_TEMPLATE_KEY, message_format);
let record = Record::builder()
.metadata(metadata)
.key_values(&properties)
.build();
logger.log(&record);
}
#[inline]
pub fn log_duration(correlation_id: CorrelationId, metric: &str, tag: &str, duration: Duration) {
let duration_in_seconds: f64 = duration.as_secs_f64();
log_metric(
correlation_id,
metric,
tag,
"duration_in_seconds",
duration_in_seconds,
)
}
#[inline]
pub fn log_metric(
correlation_id: CorrelationId,
metric: &str,
tag: &str,
metric_key: &str,
metric_value: f64,
) {
let logger = log::logger();
let metadata = Metadata::builder()
.target(METRIC_METADATA_TARGET)
.level(Level::Info)
.build();
if !logger.enabled(&metadata) {
return;
}
let from_epoch = SystemTime::now()
.duration_since(UNIX_EPOCH)
.expect("UNIX EPOCH ERROR");
let milliseconds_since_epoch = from_epoch.as_millis() as i64;
let tsd_metric = format!(
"{}{{tag=\"{}\"}} {} {:?}",
metric, tag, metric_value, milliseconds_since_epoch
);
let mut properties = BTreeMap::new();
properties.insert("correlation_id", correlation_id.to_string());
properties.insert("time-series-data", tsd_metric);
properties.insert(metric_key, format!("{:?}", metric_value));
properties.insert(
DEFAULT_MESSAGE_KEY,
format!("{} {} {}", metric, tag, metric_value),
);
let record = Record::builder()
.metadata(metadata)
.key_values(&properties)
.build();
logger.log(&record);
}