StringIndexOutOfBoundsException at kamon.instrumentation.cassandra.driver.InstrumentedSession.extractStatementType

[sshtel]

Kamon bundle version to v2.1.12
Lagom library version: 1.6.5
Akka version: Akka 2.6.14 (https://github.com/lagom/lagom/releases/tag/1.6.5)

Cassandra instrument is running with Lagom.
And this error log is blocking the application.

java.lang.StringIndexOutOfBoundsException: String index out of range: -1
	at java.lang.String.substring(String.java:1967)
	at kamon.instrumentation.cassandra.driver.InstrumentedSession.extractStatementType(InstrumentedSession.scala:163)
	at kamon.instrumentation.cassandra.driver.InstrumentedSession.buildClientSpan(InstrumentedSession.scala:62)
	at kamon.instrumentation.cassandra.driver.InstrumentedSession.executeAsync(InstrumentedSession.scala:77)
	at akka.persistence.cassandra.session.scaladsl.CassandraSession.$anonfun$executeWrite$1(CassandraSession.scala:262)
	at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:434)
	at akka.dispatch.BatchingExecutor$AbstractBatch.processBatch(BatchingExecutor.scala:63)
	at akka.dispatch.BatchingExecutor$BlockableBatch.$anonfun$run$1(BatchingExecutor.scala:100)
	at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18)
	at scala.concurrent.BlockContext$.withBlockContext(BlockContext.scala:94)
	at akka.dispatch.BatchingExecutor$BlockableBatch.run(BatchingExecutor.scala:100)
	at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:49)
	at kamon.instrumentation.executor.ExecutorInstrumentation$InstrumentedThreadPool$TimingRunnable.run(ExecutorInstrumentation.scala:453)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)```

[ivantopo]

Hey @sshtel, thanks for bringing this up. A fix is in already, and will be released with Kamon 2.3.0. There are a few major changes going on there we hope we will be able to release it later this week 🙏

Stay tuned for the release!