span: add is_recording_events (#141)

Author: mauriciovasquezbernal

opentelemetry-api/src/opentelemetry/trace/__init__.py

@@ -191,6 +191,13 @@ def update_name(self, name: str) -> None:
         on the implementation.
         """
 
+    def is_recording_events(self) -> bool:
+        """Returns whether this span will be recorded.
+
+        Returns true if this Span is active and recording information like
+        events with the add_event operation and attributes using set_attribute.
+        """
+
 
 class TraceOptions(int):
     """A bitmask that represents options specific to the trace.

opentelemetry-sdk/src/opentelemetry/sdk/trace/__init__.py

@@ -284,6 +284,8 @@ def get_context(self):
 
     def set_attribute(self, key: str, value: types.AttributeValue) -> None:
         with self._lock:
+            if not self.is_recording_events():
+                return
             has_ended = self.end_time is not None
             if not has_ended:
                 if self.attributes is Span.empty_attributes:
@@ -302,6 +304,8 @@ def add_event(
 
     def add_lazy_event(self, event: trace_api.Event) -> None:
         with self._lock:
+            if not self.is_recording_events():
+                return
             has_ended = self.end_time is not None
             if not has_ended:
                 if self.events is Span.empty_events:
@@ -322,6 +326,8 @@ def add_link(
 
     def add_lazy_link(self, link: "trace_api.Link") -> None:
         with self._lock:
+            if not self.is_recording_events():
+                return
             has_ended = self.end_time is not None
             if not has_ended:
                 if self.links is Span.empty_links:
@@ -333,6 +339,8 @@ def add_lazy_link(self, link: "trace_api.Link") -> None:
 
     def start(self):
         with self._lock:
+            if not self.is_recording_events():
+                return
             has_started = self.start_time is not None
             if not has_started:
                 self.start_time = util.time_ns()
@@ -343,6 +351,8 @@ def start(self):
 
     def end(self):
         with self._lock:
+            if not self.is_recording_events():
+                return
             if self.start_time is None:
                 raise RuntimeError("Calling end() on a not started span.")
             has_ended = self.end_time is not None
@@ -362,6 +372,9 @@ def update_name(self, name: str) -> None:
             return
         self.name = name
 
+    def is_recording_events(self) -> bool:
+        return True
+
 
 def generate_span_id():
     """Get a new random span ID.