Enrich span names in OTEL traces (#6)

* feature: Added activity name to the span name for better readability in traces. This makes it easier for users viewing the trace in a backend to be able to understand the flow and which activity is which without having to carry the context mentally

---------

Signed-off-by: Chris Doyle <uk.chris.doyle+cdsre@gmail.com>

CHANGELOG.md

@@ -4,6 +4,11 @@
 
 [Unreleased]: https://github.com/chaostoolkit-incubator/chaostoolkit-opentracing/compare/0.16.1..HEAD
 
+### Fixed
+
+- Added the ctk activity name in activity spans to enrich the user readability in backend tracing systems. [#5][ctk-opentracing-5]
+
+[ctk-opentracing-5]: https://github.com/chaostoolkit-incubator/chaostoolkit-opentracing/issues/5
 
 ## [0.16.1][] - 2023-12-18
 

chaostracing/oltp.py

@@ -231,11 +231,15 @@ def continuous_hypothesis_iteration(self, iteration_index: int, state: Any) -> N
                     .timestamp()
                     * 1e9
                 )
+                activity_name: str = probe["activity"]["name"]
                 with new_span(
-                    "activity", span, start_time=child_start_ts, end_on_exit=False
+                    f"activity: {activity_name}",
+                    span,
+                    start_time=child_start_ts,
+                    end_on_exit=False,
                 ) as child:
                     activity = probe["activity"]
-                    child.set_attribute("chaostoolkit.activity.name", activity["name"])
+                    child.set_attribute("chaostoolkit.activity.name", activity_name)
                     child.set_attribute(
                         "chaostoolkit.activity.background",
                         activity.get("background", False),
@@ -330,13 +334,14 @@ def rollbacks_completed(self, experiment: Experiment, journal: Journal) -> None:
 
     def start_activity(self, activity: Activity) -> None:
         parent = self.current_span
+        activity_name: str = activity.get("name")
         if self.continuous_span is not None:
             if "tolerance" in activity:
                 return
 
         stack = ExitStack()
-        span = stack.enter_context(new_span("activity", parent))
-        span.set_attribute("chaostoolkit.activity.name", activity.get("name"))
+        span = stack.enter_context(new_span(f"activity: {activity_name}", parent))
+        span.set_attribute("chaostoolkit.activity.name", activity_name)
         span.set_attribute(
             "chaostoolkit.activity.background", activity.get("background", False)
         )