tracing

Cargo.toml

@@ -8,4 +8,7 @@ edition = "2021"
 [dependencies]
 anyhow = "1.0.79"
 chrono = "0.4.33"
-time = "0.3.31"
+time = { version = "0.3.31", features = ["macros"] }
+tracing = "0.1.40"
+tracing-appender = "0.2.3"
+tracing-subscriber = { version = "0.3.18", features = ["time"] }

examples/exp1/main.rs

@@ -4,7 +4,7 @@ use std::thread;
 use std::time::Duration;
 
 fn main() -> std::io::Result<()> {
-    let mut roller = FileRoller::new("output", 8, PeriodGap::Secondly);
+    let mut roller = FileRoller::new(".output", 8, PeriodGap::Secondly);
     for _ in 0..100 {
         let _ = roller.write("hello".as_bytes())?;
         thread::sleep(Duration::from_millis(100));

examples/tracing-log/main.rs

@@ -0,0 +1,10 @@
+use rolling_file::default;
+use time::macros::{format_description, offset};
+use tracing_subscriber::fmt::time::OffsetTime;
+
+mod submod;
+
+fn main() {
+    let _guard = default();
+    submod::do_record();
+}

examples/tracing-log/submod.rs

@@ -0,0 +1,10 @@
+use tracing::Level;
+use tracing::{debug, error, info, trace, warn};
+
+pub fn do_record() {
+    trace!("trace");
+    debug!("debug");
+    info!("information");
+    warn!("warning");
+    error!("error");
+}

src/lib.rs

@@ -1,3 +1,6 @@
+use time::macros::{format_description, offset};
+use tracing_subscriber::fmt::time::OffsetTime;
+
 use std::env;
 use std::ffi::OsString;
 use std::fs;
@@ -208,6 +211,30 @@ fn test_offset() {
 }
 */
 
+pub fn new_log<P: AsRef<Path>>(
+    path: P,
+    maxfile: usize,
+    period: PeriodGap,
+    level: tracing::Level,
+) -> tracing_appender::non_blocking::WorkerGuard {
+    let timefmt = format_description!("[year]-[month]-[day]T[hour]:[minute]:[second]");
+    let timer = OffsetTime::new(offset!(+8), timefmt);
+    let roller = FileRoller::new(path, maxfile, period);
+    let (writer, guard) = tracing_appender::non_blocking(roller);
+    tracing_subscriber::fmt()
+        .with_writer(writer)
+        .with_max_level(level)
+        .with_timer(timer)
+        // .with_timer(LocalTime::rfc_3339())
+        .init();
+
+    guard
+}
+
+pub fn default() -> tracing_appender::non_blocking::WorkerGuard {
+    new_log("./.output", 7, PeriodGap::Daily, tracing::Level::DEBUG)
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;