chore: support to calculate object size at runtime for JVM builds

Author: teoincontatto

stackgres-k8s/e2e/utils/operator

@@ -1751,7 +1751,6 @@ set_max_length() {
 }
 
 set_helm_values_for_developer() {
-  E2E_OPERATOR_EXTRA_OPTS_INDEX=13
   cat << EOF
     --set-string developer.extraEnv.SG_IMAGE_CLUSTER_CONTROLLER=${CLUSTER_CONTROLLER_IMAGE_NAME} 
     --set-string developer.extraOpts[0]=-Dquarkus.log.category."io.stackgres".level=DEBUG 
@@ -1770,13 +1769,25 @@ set_helm_values_for_developer() {
     --set-string developer.extraOpts[11]=-Dquarkus.log.category."stackgres-extensions-cache".level=DEBUG 
     --set-string developer.extraOpts[12]=-Dquarkus.log.category."io.stackgres.operator.conciliation".level=TRACE 
 EOF
+  E2E_OPERATOR_EXTRA_OPTS_INDEX=13
+  if [ "${IMAGE_TAG%-jvm}" != "$IMAGE_TAG" ]
+  then
+  cat << EOF
+    --set-string developer.extraOpts[$((E2E_OPERATOR_EXTRA_OPTS_INDEX + 0))]=-javaagent:lib/main/com.github.jbellis.jamm-0.4.0.jar
+    --set-string developer.extraOpts[$((E2E_OPERATOR_EXTRA_OPTS_INDEX + 1))]=--add-opens=java.base/java.util.concurrent=ALL-UNNAMED
+    --set-string developer.extraOpts[$((E2E_OPERATOR_EXTRA_OPTS_INDEX + 2))]=--add-opens=java.base/java.util.function=ALL-UNNAMED
+    --set-string developer.extraOpts[$((E2E_OPERATOR_EXTRA_OPTS_INDEX + 3))]=--add-opens=java.base/java.lang.reflect=ALL-UNNAMED
+    --set-string developer.extraOpts[$((E2E_OPERATOR_EXTRA_OPTS_INDEX + 3))]=--add-opens=java.base/java.util.regex=ALL-UNNAMED
+EOF
+  E2E_OPERATOR_EXTRA_OPTS_INDEX="$((E2E_OPERATOR_EXTRA_OPTS_INDEX + 1))"
+  fi
   if [ "$K8S_IP_FAMILY" = ipv6 ]
   then
-  E2E_OPERATOR_EXTRA_OPTS_INDEX=15
   cat << EOF
-    --set-string developer.extraOpts[13]=-Djava.net.preferIPv6Addresses=true 
-    --set-string developer.extraOpts[14]=-Djava.net.preferIPv4Stack=false 
+    --set-string developer.extraOpts[$((E2E_OPERATOR_EXTRA_OPTS_INDEX + 0))]=-Djava.net.preferIPv6Addresses=true 
+    --set-string developer.extraOpts[$((E2E_OPERATOR_EXTRA_OPTS_INDEX + 1))]=-Djava.net.preferIPv4Stack=false 
 EOF
+  E2E_OPERATOR_EXTRA_OPTS_INDEX="$((E2E_OPERATOR_EXTRA_OPTS_INDEX + 2))"
   fi
   if [ -n "$E2E_EXTRA_MOUNT_BUILD_PATH" ]
   then

stackgres-k8s/src/common/pom.xml

@@ -62,6 +62,10 @@
       <artifactId>prometheus-metrics-exposition-formats</artifactId>
       <scope>compile</scope>
     </dependency>
+    <dependency>
+      <groupId>com.github.jbellis</groupId>
+      <artifactId>jamm</artifactId>
+    </dependency>
 
     <dependency>
       <groupId>io.stackgres</groupId>

stackgres-k8s/src/common/src/main/java/io/stackgres/common/MemoryUtil.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2019 OnGres, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+package io.stackgres.common;
+
+import org.github.jamm.MemoryMeter;
+
+public final class MemoryUtil {
+
+  private MemoryUtil() {
+    throw new AssertionError("Utility class");
+  }
+
+  public static long measureDeep(Object object) {
+    try {
+      return MemoryMeter.builder()
+          .printVisitedTree()
+          .build()
+          .measureDeep(object);
+    } catch (RuntimeException ex) {
+      ex.printStackTrace();
+      throw ex;
+    }
+  }
+
+}

stackgres-k8s/src/pom.xml

@@ -106,6 +106,7 @@
     <pgconfig-validator.version>1.7.1</pgconfig-validator.version>
     <auto-service.version>1.1.1</auto-service.version>
     <javapoet.version>1.13.0</javapoet.version>
+    <jamm.version>0.4.0</jamm.version>
     <compile-testing.version>0.23.0</compile-testing.version>
     <bouncycastle.version>1.70</bouncycastle.version>
     <debezium.version>3.3.1.Final</debezium.version>
@@ -291,6 +292,11 @@
         <artifactId>javapoet</artifactId>
         <version>${javapoet.version}</version>
       </dependency>
+      <dependency>
+        <groupId>com.github.jbellis</groupId>
+        <artifactId>jamm</artifactId>
+        <version>${jamm.version}</version>
+      </dependency>
       <dependency>
         <groupId>com.google.testing.compile</groupId>
         <artifactId>compile-testing</artifactId>