[BAEL-9370] Added script to start and profile the app

Author: bpstelios10

persistence-modules/spring-data-jpa-repo-5/scripts/startup.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+### Perf is needed ###
+# brew install gperftools
+
+APP_COMMAND=""
+
+case "$1" in
+  aot)
+    APP_COMMAND="mvn -pl spring-data-jpa-aot spring-boot:run -Dspring.aot.enabled=true -Dspring.aot.repositories.enabled=false"
+    ;;
+  aot-repo)
+    APP_COMMAND="mvn -pl spring-data-jpa-aot-repository spring-boot:run -Dspring.aot.enabled=true -Dspring.aot.repositories.enabled=true"
+    ;;
+  non-aot)
+    APP_COMMAND="java -jar spring-data-jpa-not-aot/target/spring-data-jpa-not-aot-0.0.1-SNAPSHOT.jar"
+    ;;
+  *)
+    echo "Error: Unknown mode '$1'. Use 'aot', 'aot-repo' or 'non-aot'."
+    exit 1
+    ;;
+esac
+
+# --- 1. Start your script in the background ---
+# Record start time in milliseconds
+SECONDS=0
+$APP_COMMAND &
+APP_PID=$!
+echo "Started APP with PID $APP_PID"
+
+# --- 2. Start sampling in the background ---
+sudo sample $APP_PID > sample_output.txt &
+SAMPLE_PID=$!
+echo "Sampling process started (PID $SAMPLE_PID)"
+echo "Waiting for service at http://localhost:8080/get-user ..."
+
+# --- 3. Poll the endpoint until it returns HTTP 200 ---
+while [ "$(curl -s -o /dev/null -L -w ''%{http_code}'' http://localhost:8080/get-user)" != 200 ]
+  do sleep 0.001;
+done
+
+# Capture elapsed time (SECONDS has fractional part)
+ELAPSED=$(printf "%.3f" "$SECONDS")
+
+## --- 4. Stop sampling and show results ---
+#echo "Stopping sample..."
+#sudo kill -INT "$SAMPLE_PID"
+#wait "$SAMPLE_PID" 2>/dev/null || true
+#
+## Give sample a moment to flush output
+#sleep 2
+
+# --- 5. Clean up ---
+echo "Stopping startup process..."
+kill "$APP_PID" 2>/dev/null || true
+
+# Give app a moment to shutdown
+sleep 2
+
+echo "Done."
+echo "Service ready after $ELAPSED seconds"