Review fixes for cassandra-3.0:javaagent

Automated code review of instrumentation/cassandra/cassandra-3.0/javaagent.

Author: otelbot[bot]

instrumentation/cassandra/cassandra-3.0/javaagent/build.gradle.kts

@@ -17,6 +17,7 @@ muzzle {
     group.set("com.datastax.cassandra")
     module.set("cassandra-driver-core")
     versions.set("[3.0,4.0)")
+    assertInverse.set(true)
     // While com.datastax.cassandra uses old versions of Guava, users may depends themselves on newer versions of Guava
     extraDependency("com.google.guava:guava:27.0-jre")
   }

instrumentation/cassandra/cassandra-3.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/cassandra/v3_0/TracingSession.java

@@ -116,6 +116,9 @@ public ResultSetFuture executeAsync(String query) {
       ResultSetFuture future = session.executeAsync(query);
       addCallbackToEndSpan(future, context, request);
       return future;
+    } catch (Throwable t) {
+      instrumenter().end(context, request, null, t);
+      throw t;
     }
   }
 
@@ -127,6 +130,9 @@ public ResultSetFuture executeAsync(String query, Object... values) {
       ResultSetFuture future = session.executeAsync(query, values);
       addCallbackToEndSpan(future, context, request);
       return future;
+    } catch (Throwable t) {
+      instrumenter().end(context, request, null, t);
+      throw t;
     }
   }
 
@@ -138,6 +144,9 @@ public ResultSetFuture executeAsync(String query, Map<String, Object> values) {
       ResultSetFuture future = session.executeAsync(query, values);
       addCallbackToEndSpan(future, context, request);
       return future;
+    } catch (Throwable t) {
+      instrumenter().end(context, request, null, t);
+      throw t;
     }
   }
 
@@ -151,6 +160,9 @@ public ResultSetFuture executeAsync(Statement statement) {
       ResultSetFuture future = session.executeAsync(statement);
       addCallbackToEndSpan(future, context, request);
       return future;
+    } catch (Throwable t) {
+      instrumenter().end(context, request, null, t);
+      throw t;
     }
   }