feat: write rolling logs to file

Cargo.lock

@@ -420,6 +420,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "crossbeam-channel"
+version = "0.5.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06ba6d68e24814cb8de6bb986db8222d3a027d15872cabc0d18817bc3c0e4471"
+dependencies = [
+ "crossbeam-utils",
+]
+
 [[package]]
 name = "crossbeam-utils"
 version = "0.8.20"
@@ -577,6 +586,7 @@ dependencies = [
  "sha2",
  "tokio",
  "tracing",
+ "tracing-appender",
  "tracing-subscriber",
  "tracker",
  "uuid",
@@ -2781,10 +2791,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5dfd88e563464686c916c7e46e623e520ddc6d79fa6641390f2e3fa86e83e885"
 dependencies = [
  "deranged",
+ "itoa",
  "num-conv",
  "powerfmt",
  "serde",
  "time-core",
+ "time-macros",
 ]
 
 [[package]]
@@ -2793,6 +2805,16 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ef927ca75afb808a4d64dd374f00a2adf8d0fcff8e7b184af886c3c87ec4a3f3"
 
+[[package]]
+name = "time-macros"
+version = "0.2.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f252a68540fde3a3877aeea552b832b40ab9a69e318efd078774a01ddee1ccf"
+dependencies = [
+ "num-conv",
+ "time-core",
+]
+
 [[package]]
 name = "tinystr"
 version = "0.7.6"
@@ -2905,6 +2927,18 @@ dependencies = [
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-appender"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3566e8ce28cc0a3fe42519fc80e6b4c943cc4c8cef275620eb8dac2d3d4e06cf"
+dependencies = [
+ "crossbeam-channel",
+ "thiserror",
+ "time",
+ "tracing-subscriber",
+]
+
 [[package]]
 name = "tracing-attributes"
 version = "0.1.28"
@@ -2937,6 +2971,16 @@ dependencies = [
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-serde"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "704b1aeb7be0d0a84fc9828cae51dab5970fee5088f83d1dd7ee6f6246fc6ff1"
+dependencies = [
+ "serde",
+ "tracing-core",
+]
+
 [[package]]
 name = "tracing-subscriber"
 version = "0.3.19"
@@ -2947,12 +2991,15 @@ dependencies = [
  "nu-ansi-term",
  "once_cell",
  "regex",
+ "serde",
+ "serde_json",
  "sharded-slab",
  "smallvec",
  "thread_local",
  "tracing",
  "tracing-core",
  "tracing-log",
+ "tracing-serde",
 ]
 
 [[package]]

Cargo.toml

@@ -40,5 +40,6 @@ sha2 = "0.10.8"
 tokio = { version = "1.39.3", features = ["process"] }
 notify-rust = "4.11.3"
 zbus = { version = "5.1.1", features = ["tokio"] }
-tracing-subscriber = { version = "0.3.19", features = ["env-filter"] }
+tracing-subscriber = { version = "0.3.19", features = ["env-filter", "json"] }
 tracing = "0.1.41"
+tracing-appender = "0.2.3"

src/main.rs

@@ -5,6 +5,7 @@ use file_builders::{
     openvrpaths_vrpath::{get_current_openvrpaths, set_current_openvrpaths_to_steam},
 };
 use gettextrs::LocaleCategory;
+use paths::get_logs_dir;
 use relm4::{
     adw,
     gtk::{self, gdk, gio, glib, prelude::*},
@@ -13,7 +14,9 @@ use relm4::{
 use std::env;
 use steam_linux_runtime_injector::restore_runtime_entrypoint;
 use tracing::warn;
-use tracing_subscriber::{filter::LevelFilter, EnvFilter};
+use tracing_subscriber::{
+    filter::LevelFilter, layer::SubscriberExt, util::SubscriberInitExt, EnvFilter, Layer,
+};
 use ui::{
     app::{App, AppInit, Msg},
     cmdline_opts::CmdLineOpts,
@@ -69,13 +72,22 @@ fn main() -> Result<()> {
     }
     restore_steam_xr_files();
 
-    tracing_subscriber::fmt()
+    let rolling_log_writer = tracing_appender::rolling::daily(get_logs_dir(), "log");
-        .with_env_filter(
+    let (non_blocking_appender, _appender_guard) =
-            EnvFilter::builder()
+        tracing_appender::non_blocking(rolling_log_writer);
-                .with_default_directive(LevelFilter::INFO.into())
+    tracing_subscriber::registry()
-                .from_env_lossy(),
+        .with(
+            tracing_subscriber::fmt::layer().pretty().with_filter(
+                EnvFilter::builder()
+                    .with_default_directive(LevelFilter::INFO.into())
+                    .from_env_lossy(),
+            ),
+        )
+        .with(
+            tracing_subscriber::fmt::layer()
+                .json()
+                .with_writer(non_blocking_appender),
         )
-        .pretty()
         .init();
 
     // Prepare i18n

src/paths.rs

@@ -56,6 +56,10 @@ pub fn get_cache_dir() -> PathBuf {
     XDG.get_cache_home().join(CMD_NAME)
 }
 
+pub fn get_logs_dir() -> PathBuf {
+    get_cache_dir().join("logs")
+}
+
 pub fn get_backup_dir() -> PathBuf {
     let p = get_data_dir().join("backups");
     if !p.is_dir() {