feat(logging): add a journald feature to log to systemd

Cargo.lock

@@ -93,6 +93,7 @@ dependencies = [
  "serde_derive",
  "toml",
  "tracing",
+ "tracing-journald",
  "tracing-subscriber",
 ]
 
@@ -510,6 +511,17 @@ dependencies = [
  "valuable",
 ]
 
+[[package]]
+name = "tracing-journald"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36a63bcca9cab23195673d7c3c7db8aff5fc062b82cd1e51c396d9dc26968c3c"
+dependencies = [
+ "libc",
+ "tracing-core",
+ "tracing-subscriber",
+]
+
 [[package]]
 name = "tracing-log"
 version = "0.1.2"

Cargo.toml

@@ -20,7 +20,11 @@ serde = "1.0.136"
 serde_derive = "1.0.136"
 toml = "0.5.8"
 tracing = "0.1.32"
+tracing-journald = { version = "0.2.3", optional = true }
 tracing-subscriber = { version = "0.3.9", features = ["env-filter"] }
 
 [dev-dependencies]
 assay = "0.1.1"
+
+[features]
+journald = ["tracing-journald"]

src/main.rs

@@ -10,6 +10,8 @@ use anyhow::{anyhow, Result};
 use clipboard::{ClipboardContext, ClipboardProvider};
 use dirs::config_dir;
 use tracing::{debug, error, Level};
+#[cfg(journald)]
+use tracing_journald::Subscriber;
 use tracing_subscriber::FmtSubscriber;
 
 use crate::config::{Act, Match, Replacements};
@@ -47,6 +49,7 @@ fn print_version() {
   );
 }
 
+#[cfg(not(journald))]
 fn configure_tracing() {
   let subscriber = FmtSubscriber::builder()
     .with_max_level(Level::TRACE)
@@ -56,6 +59,13 @@ fn configure_tracing() {
     .expect("setting default subscriber failed");
 }
 
+#[cfg(journald)]
+fn configure_tracing() {
+  let sub = Registry::default()
+    .with(Subscriber::new().unwrap().with_field_prefix(None));
+  tracing::collect::with_default(sub, f);
+}
+
 fn get_config_path() -> Result<PathBuf> {
   let mut config_path =
     config_dir().ok_or_else(|| anyhow!("Failed to get config dir"))?;