fix: add trace level logging (#65)

examples/http.rs

@@ -4,6 +4,7 @@ use extism_pdk::*;
 
 #[plugin_fn]
 pub fn http_get(Json(req): Json<HttpRequest>) -> FnResult<Memory> {
+    trace!("HTTP Request: {:?}", req);
     info!("Request to: {}", req.url);
     let res = http::request::<()>(&req, None)?;
     Ok(res.into_memory())

src/extism.rs

@@ -22,6 +22,7 @@ extern "C" {
     pub fn log_debug(offs: u64);
     pub fn log_warn(offs: u64);
     pub fn log_error(offs: u64);
+    pub fn log_trace(offs: u64);
 }
 
 /// Loads a byte array from Extism's memory. Only use this if you

src/lib.rs

@@ -47,6 +47,7 @@ pub enum LogLevel {
     Debug,
     Warn,
     Error,
+    Trace,
 }
 
 /// Re-export of `serde_json`

src/macros.rs

@@ -35,6 +35,13 @@ macro_rules! error {
     }
 }
 
+#[macro_export]
+macro_rules! trace {
+    ($($arg:tt)+) => {
+        $crate::log!($crate::LogLevel::Trace, $($arg)+)
+    }
+}
+
 #[macro_export]
 macro_rules! unwrap {
     ($x:expr) => {

src/memory.rs

@@ -121,6 +121,7 @@ impl Memory {
                 LogLevel::Debug => extism::log_debug(self.0.offset),
                 LogLevel::Warn => extism::log_warn(self.0.offset),
                 LogLevel::Error => extism::log_error(self.0.offset),
+                LogLevel::Trace => extism::log_trace(self.0.offset),
             }
         }
     }