IndexOutOfBounds in apache client instrumentation

[anuraaga]

This one might need a patch release.

Stacktrace below:
java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0
at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64)
at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70)
at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:248)
at java.base/java.util.Objects.checkIndex(Objects.java:372)
at java.base/java.util.ArrayList.set(ArrayList.java:473)
at io.opentelemetry.javaagent.instrumentation.apachehttpasyncclient.ApacheHttpClientRequest.headersToList(ApacheHttpClientRequest.java:51)
at io.opentelemetry.javaagent.instrumentation.apachehttpasyncclient.ApacheHttpClientRequest.getHeader(ApacheHttpClientRequest.java:41)
at io.opentelemetry.javaagent.instrumentation.apachehttpasyncclient.ApacheHttpAsyncClientHttpAttributesExtractor.requestHeader(ApacheHttpAsyncClientHttpAttributesExtractor.java:31)
at io.opentelemetry.javaagent.instrumentation.apachehttpasyncclient.ApacheHttpAsyncClientHttpAttributesExtractor.requestHeader(ApacheHttpAsyncClientHttpAttributesExtractor.java:16)
at io.opentelemetry.javaagent.shaded.instrumentation.api.instrumenter.http.HttpCommonAttributesExtractor.userAgent(HttpCommonAttributesExtractor.java:92)
at io.opentelemetry.javaagent.shaded.instrumentation.api.instrumenter.http.HttpCommonAttributesExtractor.onStart(HttpCommonAttributesExtractor.java:36)
at io.opentelemetry.javaagent.shaded.instrumentation.api.instrumenter.http.HttpClientAttributesExtractor.onStart(HttpClientAttributesExtractor.java:44)
at io.opentelemetry.javaagent.shaded.instrumentation.api.instrumenter.Instrumenter.start(Instrumenter.java:147)
at io.opentelemetry.javaagent.shaded.instrumentation.api.instrumenter.ClientInstrumenter.start(ClientInstrumenter.java:26)
at io.opentelemetry.javaagent.instrumentation.apachehttpasyncclient.ApacheHttpAsyncClientInstrumentation$DelegatingRequestProducer.generateRequest(ApacheHttpAsyncClientInstrumentation.java:109)
at org.apache.http.impl.nio.client.DefaultClientExchangeHandlerImpl.start(DefaultClientExchangeHandlerImpl.java:123)
at org.apache.http.impl.nio.client.InternalHttpAsyncClient.execute(InternalHttpAsyncClient.java:141)
at com.livevox.proxy.core.GenericRequestProcessor.forward(GenericRequestProcessor.java:145)
at com.livevox.proxy.core.GenericRequestProcessor.run(GenericRequestProcessor.java:90)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)

aws-observability/aws-otel-java-instrumentation#106