use old formatting method to support older python versions

Author: oxeye-dorkolog

instrumentation/opentelemetry-instrumentation-confluent-kafka/src/opentelemetry/instrumentation/confluent_kafka/__init__.py

@@ -341,7 +341,7 @@ def wrap_poll(func, instance, tracer, args, kwargs):
                             links.append(Link(context=item.get_span_context()))
 
                 instance._current_consume_span = tracer.start_span(
-                    name=f"{record.topic()} process",
+                    name="{topic} process".format(topic=record.topic()),
                     links=links,
                     kind=SpanKind.CONSUMER,
                 )

instrumentation/opentelemetry-instrumentation-confluent-kafka/src/opentelemetry/instrumentation/confluent_kafka/utils.py

@@ -98,12 +98,12 @@ def _enrich_span(
     if partition and offset and topic:
         span.set_attribute(
             SpanAttributes.MESSAGING_MESSAGE_ID,
-            f"{topic}.{partition}.{offset}",
+            "{topic}.{partition}.{offset}".format(topic=topic,partition=partition,offset=offset),
         )
 
 
 _kafka_setter = KafkaContextSetter()
 
 
 def _get_span_name(operation: str, topic: str):
-    return f"{topic} {operation}"
+    return "{topic} {operation}".format(topic=topic,operation=operation)