Add graalvm-native-images: Boot 4.1 + GraalVM CE for JDK 25, AOT processing,

the tracing agent, and a real reflection-collision trap Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01EQNA6DJ9VgCtW6zhCE8Xud
2026-09-20 11:03:09 +00:00
parent e4b5636f7c
commit 8cdfcd4d8d
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@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+# Reproduces every measurement behind the ankurm.com GraalVM native images post.
+# Requires: JAVA_HOME pointed at a plain JDK 25 for the JVM steps, and a separate GraalVM
+# distribution (with the bundled native-image tool) for the native steps -- see docs/00-versions.md.
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+echo "== 1. plain JVM baseline =="
+"$JDK25_HOME/bin/java" -jar target/app.jar --server.port=8081 &
+JPID=$!
+sleep 5
+curl -s localhost:8081/hello; echo
+ps -o rss= -p $JPID
+kill $JPID
+
+echo "== 2. build the native image (mvn -Pnative native:compile) =="
+mvn -Pnative -DskipTests native:compile
+
+echo "== 3. run the native image, reflection trap included =="
+./target/graalvm-native-images --server.port=8082 &
+NPID=$!
+sleep 1
+curl -s "localhost:8082/report?format=plain"; echo
+ps -o rss= -p $NPID
+kill $NPID
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+# Reproduces the tracing-agent fix for the /report reflection trap: run the plain jar under the
+# GraalVM tracing agent, exercise both code paths, then rebuild the native image with the
+# generated hints merged in under a namespace that does NOT collide with Spring's own AOT output.
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+rm -rf agent-output && mkdir -p agent-output
+"$GRAALVM_HOME/bin/java" -agentlib:native-image-agent=config-output-dir=agent-output \
+    -jar target/app.jar --server.port=8083 &
+AGENT_PID=$!
+sleep 10
+curl -s "localhost:8083/report?format=plain"; echo
+curl -s "localhost:8083/report?format=json"; echo
+kill $AGENT_PID
+
+echo "Generated hints for our own classes:"
+grep -A4 "com.ankurm.graalvmdemo.report" agent-output/reachability-metadata.json