Allow to override log level for specific target

.env.template

@@ -370,6 +370,13 @@
 ## routes and static file, websocket and alive requests
 # LOG_LEVEL=info
 
+## log level target override
+## Change the verbosity of specific log output
+## Format is a line for each "target=log_level"
+#LOG_LEVEL_OVERRIDE="
+#routes=warn
+#"
+
 ## Token for the admin interface, preferably an Argon2 PCH string
 ## Vaultwarden has a built-in generator by calling `vaultwarden hash`
 ## For details see: https://github.com/dani-garcia/vaultwarden/wiki/Enabling-admin-page#secure-the-admin_token

src/config.rs

@@ -1,8 +1,10 @@
 use std::env::consts::EXE_SUFFIX;
 use std::process::exit;
+use std::str::FromStr;
 use std::sync::RwLock;
 
 use job_scheduler_ng::Schedule;
+use log::LevelFilter;
 use once_cell::sync::Lazy;
 use reqwest::Url;
 
@@ -571,6 +573,8 @@ make_config! {
  log_file: String, false, option;
  /// Log level
  log_level: String, false, def, "Info".to_string();
+ /// Override individual log level
+ log_level_override: String, false, def, String::new();
 
  /// Enable DB WAL |> Turning this off might lead to worse performance, but might help if using vaultwarden on some exotic filesystems,
  /// that do not support WAL. Please make sure you read project wiki on the topic before changing this setting.
@@ -1054,6 +1058,26 @@ fn smtp_convert_deprecated_ssl_options(smtp_ssl: Option<bool>, smtp_explicit_tls
  "starttls".to_string()
 }
 
+/// Allow to parse a multiline list of Key/Values (`key=value`)
+/// Will ignore comment lines (starting with `//`)
+fn parse_param_list(config: String) -> Vec<(String, String)> {
+ config
+ .lines()
+ .map(|l| l.trim())
+ .filter(|l| !l.is_empty() && !l.starts_with("//"))
+ .filter_map(|l| {
+ let split = l.split('=').collect::<Vec<&str>>();
+ match &split[..] {
+ [key, value] => Some(((*key).to_string(), (*value).to_string())),
+ _ => {
+ println!("[WARNING] Failed to parse ({l}). Expected key=value");
+ None
+ }
+ }
+ })
+ .collect()
+}
+
 impl Config {
  pub fn load() -> Result<Self, Error> {
  // Loading from env and file
@@ -1255,6 +1279,19 @@ impl Config {
  }
  }
  }
+
+ pub fn log_overrides(&self) -> Vec<(String, LevelFilter)> {
+ parse_param_list(self.log_level_override())
+ .into_iter()
+ .filter_map(|(k, v)| match LevelFilter::from_str(&v) {
+ Ok(lv) => Some((k, lv)),
+ Err(_) => {
+ println!("[WARNING] Invalid log level: {k}={v}");
+ None
+ }
+ })
+ .collect()
+ }
 }
 
 use handlebars::{

src/main.rs

@@ -311,6 +311,10 @@ fn init_logging(level: log::LevelFilter) -> Result<(), fern::InitError> {
  logger = logger.level_for("lettre::transport::smtp", log::LevelFilter::Off)
  }
 
+ for (path, level) in CONFIG.log_overrides() {
+ logger = logger.level_for(path, level);
+ }
+
  if CONFIG.extended_logging() {
  logger = logger.format(|out, message, record| {
  out.finish(format_args!(