[Rust] Replace `log` with `tracing`

- Added more documentation
- Replaced global named logger for plugins, fixing the issue when the CU has multiple (e.g. statically linked demo)
- Simplified some misc code

This is a breaking change, but I believe there is no better time to make it, we cannot continue to use the `log` crate, it is too limited for our needs.

1 files changed, 3 insertions, 1 deletions

diff --git a/rust/src/workflow/activity.rs b/rust/src/workflow/activity.rs
index a9afc2f1..2e5d6e80 100644
--- a/rust/src/workflow/activity.rs
+++ b/rust/src/workflow/activity.rs
@@ -69,7 +69,9 @@ impl Activity {
         ) {
             let ctxt = &mut *(ctxt as *mut F);
             if let Some(analysis) = NonNull::new(analysis) {
-                ctxt(&AnalysisContext::from_raw(analysis))
+                let analysis = AnalysisContext::from_raw(analysis);
+                let _span = ffi_span!("Activity::action", analysis.view());
+                ctxt(&analysis)
             }
         }
         let config = config.as_config();