Add aws.pulse.over.midlina attribute for lambda spans when appsignals is enabled

Author: mxiamxia

lambda-layer/packages/layer/scripts/otel-instrument

@@ -28,6 +28,10 @@ if [ -z "${OTEL_AWS_APPLICATION_SIGNALS_ENABLED}" ]; then
     export OTEL_AWS_APPLICATION_SIGNALS_ENABLED="true";
 fi
 
+if [ "${OTEL_AWS_APPLICATION_SIGNALS_ENABLED}" = "true" ]; then
+    export LAMBDA_RESOURCE_ATTRIBUTES="aws.pulse.over.midlina=true,${LAMBDA_RESOURCE_ATTRIBUTES}"
+fi
+
 if [ -z "${OTEL_METRICS_EXPORTER}" ]; then
     export OTEL_METRICS_EXPORTER="none";
 fi