default to debug log level if using debug build

Signed-off-by: strawberry <strawberry@puppygock.gay>

conduwuit-example.toml

@@ -270,7 +270,10 @@ allow_profile_lookup_federation_requests = true
 
 # max log level for conduwuit. allows debug, info, warn, or error
 # see also: https://docs.rs/tracing-subscriber/latest/tracing_subscriber/filter/struct.EnvFilter.html#directives
-# For release builds, the maximum log level for conduwuit is info. For debug builds, it is "trace".
+# **Caveat**:
+# For release builds, the tracing crate is configured to only implement levels higher than error to avoid unnecessary overhead in the compiled binary from trace macros.
+# For debug builds, this restriction is not applied.
+#
 # Defaults to "warn"
 #log = "warn"
 

src/config/mod.rs

@@ -860,7 +860,14 @@ fn default_max_fetch_prev_events() -> u16 { 100_u16 }
 
 fn default_trusted_servers() -> Vec<OwnedServerName> { vec![OwnedServerName::try_from("matrix.org").unwrap()] }
 
-fn default_log() -> String { "warn,state_res=warn".to_owned() }
+fn default_log() -> String {
+	// do debug logging by default for debug builds
+	if cfg!(debug_assertions) {
+		"debug".to_owned()
+	} else {
+		"warn,ruma_state_res=warn".to_owned()
+	}
+}
 
 fn default_notification_push_path() -> String { "/_matrix/push/v1/notify".to_owned() }