Add more parameters and wait for server availability

Author: franz1981

scripts/stress.sh

@@ -1,14 +1,42 @@
 #!/bin/bash
 
-thisdir=`dirname "$0"`
+thisdir=$(dirname "$0")
+
+WRK_SETTINGS="--timeout 2s --threads 2 --connections 10 --duration 30s --rate 10000"
+JVM_PARAMS="-XX:ActiveProcessorCount=8 -Xms512m -Xmx512m"
+WAIT_SERVER=${WAIT_SERVER:-true}
+
+# if no jar is provided as argument, exit and complain
+if [ "$#" -eq 0 ]; then
+  echo "Usage: $0 <path-to-jar>"
+  exit 1
+fi
 
 # make sure the port is clear before enabling halting-on-error
-kill $(lsof -t -i:8080) &>/dev/null
+kill $(lsof -t -i:8080) &>/dev/null || true
 
 set -euo pipefail
 
 ${thisdir}/infra.sh -s
-java -XX:ActiveProcessorCount=8 -Xms512m -Xmx512m -jar $1 &
-jbang wrk2@hyperfoil -t2 -c100 -d30s -R 200 --latency http://localhost:8080/fruits
-scripts/infra.sh -d
-kill $(lsof -t -i:8080) &>/dev/null
+java ${JVM_PARAMS} -jar $1 &
+
+if [ "$WAIT_SERVER" = "true" ]; then
+# wait until any HTTP response is received (connect succeeds)
+until curl -sS http://localhost:8080 >/dev/null 2>&1; do
+  sleep 0.5
+done
+fi
+
+echo "-----------------------------------------"
+echo "Starting wrk2"
+echo "-----------------------------------------"
+
+jbang wrk2@hyperfoil ${WRK_SETTINGS} http://localhost:8080/fruits
+
+echo "-----------------------------------------"
+echo "Stopped wrk2"
+echo "-----------------------------------------"
+
+# Kill the Java process (listening on 8080)
+kill -TERM $(lsof -t -i:8080) &>/dev/null || true
+${thisdir}/infra.sh -d