From 433c403e47008586454405336c9e8cf41bc2a7bb Mon Sep 17 00:00:00 2001
From: Fabio Niephaus <fabio.niephaus@oracle.com>
Date: Mon, 7 Oct 2024 10:47:13 +0200
Subject: [PATCH] Add Pygal on GraalPy demos.

---
 .../graalpy-micronaut-pygal-charts.yml        |  47 +++
 .../graalpy-spring-boot-pygal-charts.yml      |  47 +++
 .../graalpy-micronaut-pygal-charts/.gitignore |  15 +
 .../.mvn/wrapper/maven-wrapper.properties     |  19 ++
 .../graalpy-micronaut-pygal-charts/README.md  |  45 +++
 .../aot-jar.properties                        |  37 +++
 .../micronaut-cli.yml                         |   6 +
 graalpy/graalpy-micronaut-pygal-charts/mvnw   | 287 ++++++++++++++++++
 .../graalpy-micronaut-pygal-charts/mvnw.bat   | 187 ++++++++++++
 .../graalpy-micronaut-pygal-charts/pom.xml    | 154 ++++++++++
 .../main/java/com/example/Application.java    |  16 +
 .../main/java/com/example/DemoController.java |  53 ++++
 .../main/java/com/example/GraalPyContext.java |  30 ++
 .../main/java/com/example/PyGalService.java   |  26 ++
 .../java/com/example/PyGalServiceMixed.java   |  51 ++++
 .../com/example/PyGalServicePureJava.java     |  53 ++++
 .../com/example/PyGalServicePurePython.java   |  37 +++
 .../example/PyGalServiceValueAPIDynamic.java  |  35 +++
 .../src/main/resources/application.properties |   2 +
 .../src/main/resources/logback.xml            |  14 +
 .../src/test/java/com/example/DemoTest.java   |  45 +++
 .../.gitignore                                |  33 ++
 .../.mvn/wrapper/maven-wrapper.properties     |  19 ++
 .../README.md                                 |  45 +++
 graalpy/graalpy-spring-boot-pygal-charts/mvnw | 259 ++++++++++++++++
 .../graalpy-spring-boot-pygal-charts/mvnw.cmd | 149 +++++++++
 .../graalpy-spring-boot-pygal-charts/pom.xml  |  98 ++++++
 .../com/example/demo/DemoApplication.java     |  19 ++
 .../java/com/example/demo/DemoController.java |  46 +++
 .../demo/GraalPyContextConfiguration.java     |  36 +++
 .../java/com/example/demo/PyGalService.java   |  26 ++
 .../com/example/demo/PyGalServiceMixed.java   |  52 ++++
 .../example/demo/PyGalServicePureJava.java    |  54 ++++
 .../example/demo/PyGalServicePurePython.java  |  38 +++
 .../demo/PyGalServiceValueAPIDynamic.java     |  36 +++
 .../com.example/demo/proxy-config.json        |  17 ++
 .../com.example/demo/reflect-config.json      |  14 +
 .../src/main/resources/application.properties |   1 +
 .../example/demo/DemoApplicationTests.java    |  45 +++
 39 files changed, 2193 insertions(+)
 create mode 100644 .github/workflows/graalpy-micronaut-pygal-charts.yml
 create mode 100644 .github/workflows/graalpy-spring-boot-pygal-charts.yml
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/.gitignore
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/.mvn/wrapper/maven-wrapper.properties
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/README.md
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/aot-jar.properties
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/micronaut-cli.yml
 create mode 100755 graalpy/graalpy-micronaut-pygal-charts/mvnw
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/mvnw.bat
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/pom.xml
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/Application.java
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/DemoController.java
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/GraalPyContext.java
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalService.java
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServiceMixed.java
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServicePureJava.java
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServicePurePython.java
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServiceValueAPIDynamic.java
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/src/main/resources/application.properties
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/src/main/resources/logback.xml
 create mode 100644 graalpy/graalpy-micronaut-pygal-charts/src/test/java/com/example/DemoTest.java
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/.gitignore
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/.mvn/wrapper/maven-wrapper.properties
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/README.md
 create mode 100755 graalpy/graalpy-spring-boot-pygal-charts/mvnw
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/mvnw.cmd
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/pom.xml
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/DemoApplication.java
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/DemoController.java
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/GraalPyContextConfiguration.java
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalService.java
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServiceMixed.java
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServicePureJava.java
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServicePurePython.java
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServiceValueAPIDynamic.java
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/src/main/resources/META-INF/native-image/com.example/demo/proxy-config.json
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/src/main/resources/META-INF/native-image/com.example/demo/reflect-config.json
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/src/main/resources/application.properties
 create mode 100644 graalpy/graalpy-spring-boot-pygal-charts/src/test/java/com/example/demo/DemoApplicationTests.java

diff --git a/.github/workflows/graalpy-micronaut-pygal-charts.yml b/.github/workflows/graalpy-micronaut-pygal-charts.yml
new file mode 100644
index 0000000..dffeafb
--- /dev/null
+++ b/.github/workflows/graalpy-micronaut-pygal-charts.yml
@@ -0,0 +1,47 @@
+name: Test GraalPy Micronaut Pygal Charts
+on:
+  push:
+    paths:
+      - 'graalpy/graalpy-micronaut-pygal-charts/**'
+      - '.github/workflows/graalpy-micronaut-pygal-charts.yml'
+  pull_request:
+    paths:
+      - 'graalpy/graalpy-micronaut-pygal-charts/**'
+      - '.github/workflows/graalpy-micronaut-pygal-charts.yml'
+  workflow_dispatch:
+permissions:
+  contents: read
+env:
+  NATIVE_IMAGE_OPTIONS: '-J-Xmx16g'
+jobs:
+  run:
+    name: 'graalpy-micronaut-pygal-charts'
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v4
+      - uses: graalvm/setup-graalvm@v1
+        with:
+          java-version: '23.0.0'
+          distribution: 'graalvm'
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          cache: 'maven'
+          native-image-job-reports: 'true'
+      - name: Build, test, and run 'graalpy-micronaut-pygal-charts' using Maven
+        run: |
+          cd graalpy/graalpy-micronaut-pygal-charts
+          ./mvnw --no-transfer-progress clean test -Dmicronaut.http.client.read-timeout=1m
+          ./mvnw --no-transfer-progress mn:run &
+          mnpid="$!"
+          sleep 30
+          curl -s -D - -o /dev/null http://localhost:8080/java
+          kill $mnpid
+      - name: Build and run native 'graalpy-micronaut-pygal-charts' using Maven
+        run: |
+          cd graalpy/graalpy-micronaut-pygal-charts
+          ./mvnw --no-transfer-progress clean package -DskipTests -Dpackaging=native-image
+          ./target/graalpy-micronaut &
+          mnpid="$!"
+          sleep 20
+          curl -s -D - -o /dev/null http://localhost:8080/python
+          kill $mnpid
diff --git a/.github/workflows/graalpy-spring-boot-pygal-charts.yml b/.github/workflows/graalpy-spring-boot-pygal-charts.yml
new file mode 100644
index 0000000..2114149
--- /dev/null
+++ b/.github/workflows/graalpy-spring-boot-pygal-charts.yml
@@ -0,0 +1,47 @@
+name: Test GraalPy Spring Pygal Charts
+on:
+  push:
+    paths:
+      - 'graalpy/graalpy-spring-boot-pygal-charts/**'
+      - '.github/workflows/graalpy-spring-boot-pygal-charts.yml'
+  pull_request:
+    paths:
+      - 'graalpy/graalpy-spring-boot-pygal-charts/**'
+      - '.github/workflows/graalpy-spring-boot-pygal-charts.yml'
+  workflow_dispatch:
+permissions:
+  contents: read
+env:
+  NATIVE_IMAGE_OPTIONS: '-J-Xmx16g'
+jobs:
+  run:
+    name: 'graalpy-spring-boot-pygal-charts'
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v4
+      - uses: graalvm/setup-graalvm@v1
+        with:
+          java-version: '23.0.0'
+          distribution: 'graalvm'
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          cache: 'maven'
+          native-image-job-reports: 'true'
+      - name: Build, test, and run 'graalpy-spring-boot-pygal-charts' using Maven
+        run: |
+          cd graalpy/graalpy-spring-boot-pygal-charts
+          ./mvnw --no-transfer-progress clean test -Dspring.mvc.async.request-timeout=60000
+          ./mvnw --no-transfer-progress spring-boot:run &
+          sbpid="$!"
+          sleep 30
+          curl -s -D - -o /dev/null http://localhost:8080/java
+          kill $sbpid
+      - name: Build and run native 'graalpy-spring-boot-pygal-charts' using Maven
+        run: |
+          cd graalpy/graalpy-spring-boot-pygal-charts
+          ./mvnw --no-transfer-progress clean -DskipTests -Pnative native:compile
+          ./target/graalpy-springboot &
+          sbpid="$!"
+          sleep 20
+          curl -s -D - -o /dev/null http://localhost:8080/python
+          kill $sbpid
diff --git a/graalpy/graalpy-micronaut-pygal-charts/.gitignore b/graalpy/graalpy-micronaut-pygal-charts/.gitignore
new file mode 100644
index 0000000..5a03bc3
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/.gitignore
@@ -0,0 +1,15 @@
+Thumbs.db
+.DS_Store
+.gradle
+build/
+target/
+out/
+.micronaut/
+.idea
+*.iml
+*.ipr
+*.iws
+.project
+.settings
+.classpath
+.factorypath
diff --git a/graalpy/graalpy-micronaut-pygal-charts/.mvn/wrapper/maven-wrapper.properties b/graalpy/graalpy-micronaut-pygal-charts/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 0000000..d58dfb7
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,19 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+wrapperVersion=3.3.2
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
diff --git a/graalpy/graalpy-micronaut-pygal-charts/README.md b/graalpy/graalpy-micronaut-pygal-charts/README.md
new file mode 100644
index 0000000..e16cba0
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/README.md
@@ -0,0 +1,45 @@
+## SVG Charts with GraalPy and Micronaut
+
+This demo illustrates how GraalPy can be used to embed [Pygal](https://github.com/Kozea/pygal), a dynamic SVG charting library written in Python, in a Micronaut application.
+In particular, this demo shows four different approaches to interact with Pygal from Java.
+
+## Preparation
+
+Install GraalVM for JDK 23 and set the value of `JAVA_HOME` accordingly.
+We recommend using [SDKMAN!](https://sdkman.io/). (For other download options, see [GraalVM Downloads](https://www.graalvm.org/downloads/).)
+
+```bash
+sdk install java 23-graal
+```
+
+## Run the Application
+
+To start the demo, simply run:
+
+```bash
+./mvnw package mn:run
+```
+
+When the demo runs, open the follwing URLs in a browser:
+
+| URL                           | Service                       |
+|:------------------------------|:------------------------------|
+| http://localhost:8080/java    | [`PyGalServicePureJava`](src/main/java/com/example/PyGalServicePureJava.java)        |
+| http://localhost:8080/python  | [`PyGalServicePurePython`](src/main/java/com/example/PyGalServicePurePython.java)      |
+| http://localhost:8080/mixed   | [`PyGalServiceMixed`](src/main/java/com/example/PyGalServiceMixed.java)           |
+| http://localhost:8080/dynamic | [`PyGalServiceValueAPIDynamic`](src/main/java/com/example/PyGalServiceValueAPIDynamic.java) |
+
+
+## Implementation Details
+
+The `DemoController` uses four services that all render the same XY chart using different implementations:
+
+- [`PyGalServicePureJava`](src/main/java/com/example/PyGalServicePureJava.java) interacts with Pygal and Python using Java interfaces and `Value.as(Class<T> targetType)`. This is the recommended approach.
+- [`PyGalServicePurePython`](src/main/java/com/example/PyGalServicePurePython.java) embeds the Python sample code from the Pygal documentation.
+- [`PyGalServiceMixed`](src/main/java/com/example/PyGalServiceMixed.java) uses a Python function which is invoked with Java values.
+- [`PyGalServiceValueAPIDynamic`](src/main/java/com/example/PyGalServiceValueAPIDynamic.java) uses the [Value](https://www.graalvm.org/sdk/javadoc/org/graalvm/polyglot/Value.html) API from the GraalVM SDK.
+
+
+The `DemoTest` ensures that all four service implementations render the same XY chart. Run it with `./mvnw test`.
+
+> Note: This demo uses a single [`GraalPyContext`](src/main/java/com/example/GraalPyContext.java), which can be accessed from only one thread at a time to evaluate Python code. Pure Python packages including Pygal can be used in multiple GraalPy contexts, for example one context per thread, to improve the throughput of the application. Other demos illustrate how to pool multiple contexts.
diff --git a/graalpy/graalpy-micronaut-pygal-charts/aot-jar.properties b/graalpy/graalpy-micronaut-pygal-charts/aot-jar.properties
new file mode 100644
index 0000000..3820d55
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/aot-jar.properties
@@ -0,0 +1,37 @@
+# AOT configuration properties for jar packaging
+# Please review carefully the optimizations enabled below
+# Check https://micronaut-projects.github.io/micronaut-aot/latest/guide/ for more details
+
+# Caches environment property values: environment properties will be deemed immutable after application startup.
+cached.environment.enabled=true
+
+# Precomputes Micronaut configuration property keys from the current environment variables
+precompute.environment.properties.enabled=true
+
+# Replaces logback.xml with a pure Java configuration
+logback.xml.to.java.enabled=true
+
+# Converts YAML configuration files to Java configuration
+yaml.to.java.config.enabled=true
+
+# Scans for service types ahead-of-time, avoiding classpath scanning at startup
+serviceloading.jit.enabled=true
+
+# Scans reactive types at build time instead of runtime
+scan.reactive.types.enabled=true
+
+# Deduces the environment at build time instead of runtime
+deduce.environment.enabled=true
+
+# Checks for the existence of some types at build time instead of runtime
+known.missing.types.enabled=true
+
+# Precomputes property sources at build time
+sealed.property.source.enabled=true
+
+# The list of service types to be scanned (comma separated)
+service.types=io.micronaut.context.env.PropertySourceLoader,io.micronaut.inject.BeanConfiguration,io.micronaut.inject.BeanDefinitionReference,io.micronaut.http.HttpRequestFactory,io.micronaut.http.HttpResponseFactory,io.micronaut.core.beans.BeanIntrospectionReference,io.micronaut.core.convert.TypeConverterRegistrar,io.micronaut.context.env.PropertyExpressionResolver
+
+# A list of types that the AOT analyzer needs to check for existence (comma separated)
+known.missing.types.list=io.reactivex.Observable,reactor.core.publisher.Flux,kotlinx.coroutines.flow.Flow,io.reactivex.rxjava3.core.Flowable,io.reactivex.rxjava3.core.Observable,io.reactivex.Single,reactor.core.publisher.Mono,io.reactivex.Maybe,io.reactivex.rxjava3.core.Single,io.reactivex.rxjava3.core.Maybe,io.reactivex.Completable,io.reactivex.rxjava3.core.Completable,io.methvin.watchservice.MacOSXListeningWatchService,io.micronaut.core.async.publisher.CompletableFuturePublisher,io.micronaut.core.async.publisher.Publishers.JustPublisher,io.micronaut.core.async.subscriber.Completable
+
diff --git a/graalpy/graalpy-micronaut-pygal-charts/micronaut-cli.yml b/graalpy/graalpy-micronaut-pygal-charts/micronaut-cli.yml
new file mode 100644
index 0000000..dd29634
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/micronaut-cli.yml
@@ -0,0 +1,6 @@
+applicationType: default
+defaultPackage: com.example
+testFramework: junit
+sourceLanguage: java
+buildTool: maven
+features: [app-name, http-client-test, java, java-application, junit, logback, maven, maven-enforcer-plugin, micronaut-aot, micronaut-http-validation, netty-server, properties, readme, serialization-jackson, shade, static-resources]
diff --git a/graalpy/graalpy-micronaut-pygal-charts/mvnw b/graalpy/graalpy-micronaut-pygal-charts/mvnw
new file mode 100755
index 0000000..8822887
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/mvnw
@@ -0,0 +1,287 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.1.1
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /usr/local/etc/mavenrc ] ; then
+    . /usr/local/etc/mavenrc
+  fi
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        JAVA_HOME="`/usr/libexec/java_home`"; export JAVA_HOME
+      else
+        JAVA_HOME="/Library/Java/Home"; export JAVA_HOME
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`\\unset -f command; \\command -v java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  printf '%s' "$(cd "$basedir"; pwd)"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=$(find_maven_basedir "$(dirname $0)")
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}; export MAVEN_PROJECTBASEDIR
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    if [ -n "$MVNW_REPOURL" ]; then
+      wrapperUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar"
+    else
+      wrapperUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) wrapperUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $wrapperUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        QUIET="--quiet"
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+          QUIET=""
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget $QUIET "$wrapperUrl" -O "$wrapperJarPath"
+        else
+            wget $QUIET --http-user="$MVNW_USERNAME" --http-password="$MVNW_PASSWORD" "$wrapperUrl" -O "$wrapperJarPath"
+        fi
+        [ $? -eq 0 ] || rm -f "$wrapperJarPath"
+    elif command -v curl > /dev/null; then
+        QUIET="--silent"
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+          QUIET=""
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl $QUIET -o "$wrapperJarPath" "$wrapperUrl" -f -L
+        else
+            curl $QUIET --user "$MVNW_USERNAME:$MVNW_PASSWORD" -o "$wrapperJarPath" "$wrapperUrl" -f -L
+        fi
+        [ $? -eq 0 ] || rm -f "$wrapperJarPath"
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaSource="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaSource=`cygpath --path --windows "$javaSource"`
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaSource" ]; then
+            if [ ! -e "$javaClass" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaSource")
+            fi
+            if [ -e "$javaClass" ]; then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  $MAVEN_DEBUG_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
diff --git a/graalpy/graalpy-micronaut-pygal-charts/mvnw.bat b/graalpy/graalpy-micronaut-pygal-charts/mvnw.bat
new file mode 100644
index 0000000..1d7c59b
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/mvnw.bat
@@ -0,0 +1,187 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    https://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.1.1
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %*
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set WRAPPER_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar"
+
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET WRAPPER_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET WRAPPER_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %WRAPPER_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%WRAPPER_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% ^
+  %JVM_CONFIG_MAVEN_PROPS% ^
+  %MAVEN_OPTS% ^
+  %MAVEN_DEBUG_OPTS% ^
+  -classpath %WRAPPER_JAR% ^
+  "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^
+  %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%"=="on" pause
+
+if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE%
+
+cmd /C exit /B %ERROR_CODE%
diff --git a/graalpy/graalpy-micronaut-pygal-charts/pom.xml b/graalpy/graalpy-micronaut-pygal-charts/pom.xml
new file mode 100644
index 0000000..b96660e
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/pom.xml
@@ -0,0 +1,154 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>com.example</groupId>
+  <artifactId>demo</artifactId>
+  <version>0.1</version>
+  <packaging>${packaging}</packaging>
+
+  <parent>
+    <groupId>io.micronaut.platform</groupId>
+    <artifactId>micronaut-parent</artifactId>
+    <version>4.6.1</version>
+  </parent>
+  <properties>
+    <graalpy.version>24.1.0</graalpy.version>
+    <packaging>jar</packaging>
+    <jdk.version>21</jdk.version>
+    <release.version>21</release.version>
+    <micronaut.version>4.6.1</micronaut.version>
+    <micronaut.runtime>netty</micronaut.runtime>
+    <micronaut.aot.enabled>false</micronaut.aot.enabled>
+    <micronaut.aot.packageName>com.example.aot.generated</micronaut.aot.packageName>
+    <exec.mainClass>com.example.Application</exec.mainClass>
+  </properties>
+
+  <repositories>
+    <repository>
+      <id>central</id>
+      <url>https://repo.maven.apache.org/maven2</url>
+    </repository>
+  </repositories>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.graalvm.polyglot</groupId>
+      <artifactId>polyglot</artifactId>
+      <version>${graalpy.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.graalvm.polyglot</groupId>
+      <artifactId>python</artifactId>
+      <version>${graalpy.version}</version>
+      <type>pom</type>
+    </dependency>
+
+    <dependency>
+      <groupId>org.graalvm.python</groupId>
+      <artifactId>python-embedding</artifactId>
+      <version>${graalpy.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>io.micronaut</groupId>
+      <artifactId>micronaut-http-server-netty</artifactId>
+      <scope>compile</scope>
+    </dependency>
+    <dependency>
+      <groupId>io.micronaut.serde</groupId>
+      <artifactId>micronaut-serde-jackson</artifactId>
+      <scope>compile</scope>
+    </dependency>
+    <dependency>
+      <groupId>ch.qos.logback</groupId>
+      <artifactId>logback-classic</artifactId>
+      <scope>runtime</scope>
+    </dependency>
+    <dependency>
+      <groupId>io.micronaut</groupId>
+      <artifactId>micronaut-http-client</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>io.micronaut.test</groupId>
+      <artifactId>micronaut-test-junit5</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-engine</artifactId>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.graalvm.python</groupId>
+        <artifactId>graalpy-maven-plugin</artifactId>
+        <version>${graalpy.version}</version>
+        <executions>
+          <execution>
+            <configuration>
+              <packages>
+                <package>pygal==3.0.5</package>
+              </packages>
+            </configuration>
+            <goals>
+              <goal>process-graalpy-resources</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <groupId>io.micronaut.maven</groupId>
+        <artifactId>micronaut-maven-plugin</artifactId>
+        <configuration>
+          <configFile>aot-${packaging}.properties</configFile>
+        </configuration>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <configuration>
+          <!-- Uncomment to enable incremental compilation -->
+          <!-- <useIncrementalCompilation>false</useIncrementalCompilation> -->
+
+          <annotationProcessorPaths combine.children="append">
+            <path>
+              <groupId>io.micronaut</groupId>
+              <artifactId>micronaut-http-validation</artifactId>
+              <version>${micronaut.core.version}</version>
+            </path>
+            <path>
+              <groupId>io.micronaut.serde</groupId>
+              <artifactId>micronaut-serde-processor</artifactId>
+              <version>${micronaut.serialization.version}</version>
+              <exclusions>
+                <exclusion>
+                  <groupId>io.micronaut</groupId>
+                  <artifactId>micronaut-inject</artifactId>
+                </exclusion>
+              </exclusions>
+            </path>
+          </annotationProcessorPaths>
+          <compilerArgs>
+            <arg>-Amicronaut.processing.group=com.example</arg>
+            <arg>-Amicronaut.processing.module=demo</arg>
+          </compilerArgs>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>
diff --git a/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/Application.java b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/Application.java
new file mode 100644
index 0000000..6d16a5a
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/Application.java
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example;
+
+import io.micronaut.runtime.Micronaut;
+
+public class Application {
+
+    public static void main(String[] args) {
+        Micronaut.run(Application.class, args);
+    }
+}
\ No newline at end of file
diff --git a/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/DemoController.java b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/DemoController.java
new file mode 100644
index 0000000..74ac11b
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/DemoController.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example;
+
+import io.micronaut.http.MediaType;
+import io.micronaut.http.annotation.Controller;
+import io.micronaut.http.annotation.Get;
+import io.micronaut.http.annotation.Produces;
+
+@Controller
+public class DemoController {
+
+    private final PyGalServicePurePython pyGalServicePurePython;
+    private final PyGalServicePureJava pyGalServicePureJava;
+    private final PyGalServiceMixed pyGalServiceMixed;
+    private final PyGalServiceValueAPIDynamic pyGalServiceValueAPIDynamic;
+
+    DemoController(PyGalServicePurePython pyGalServicePurePython, PyGalServicePureJava pyGalServicePureJava, PyGalServiceMixed pyGalServiceMixed, PyGalServiceValueAPIDynamic pyGalServiceValueAPIDynamic) {
+        this.pyGalServicePurePython = pyGalServicePurePython;
+        this.pyGalServicePureJava = pyGalServicePureJava;
+        this.pyGalServiceMixed = pyGalServiceMixed;
+        this.pyGalServiceValueAPIDynamic = pyGalServiceValueAPIDynamic;
+    }
+
+    @Get("/python")
+    @Produces(MediaType.IMAGE_SVG)
+    public String renderXYChartPurePython() {
+        return pyGalServicePurePython.renderXYChart();
+    }
+
+    @Get("/java")
+    @Produces(MediaType.IMAGE_SVG)
+    public String renderXYChartPureJava() {
+        return pyGalServicePureJava.renderXYChart();
+    }
+
+    @Get("/mixed")
+    @Produces(MediaType.IMAGE_SVG)
+    public String renderXYChartMixed() {
+        return pyGalServiceMixed.renderXYChart();
+    }
+
+    @Get("/dynamic")
+    @Produces(MediaType.IMAGE_SVG)
+    public String renderXYChartValueAPIDynamic() {
+        return pyGalServiceValueAPIDynamic.renderXYChart();
+    }
+}
+
diff --git a/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/GraalPyContext.java b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/GraalPyContext.java
new file mode 100644
index 0000000..030ca3b
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/GraalPyContext.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example;
+
+import io.micronaut.context.annotation.Context;
+import jakarta.annotation.PreDestroy;
+import org.graalvm.polyglot.Value;
+import org.graalvm.python.embedding.utils.GraalPyResources;
+
+@Context
+public class GraalPyContext {
+    private final org.graalvm.polyglot.Context context = GraalPyResources.createContext();
+
+    public GraalPyContext() {
+        context.initialize("python");
+    }
+
+    public Value eval(String source) {
+        return context.eval("python", source);
+    }
+
+    @PreDestroy
+    void close() {
+        context.close(true);
+    }
+}
diff --git a/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalService.java b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalService.java
new file mode 100644
index 0000000..ab2136c
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalService.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example;
+
+/**
+ * <a href="https://www.pygal.org/en/stable/documentation/types/xy.html">Example PyGal code</a>:
+ * <pre>
+ *     from math import cos
+ *     xy_chart = pygal.XY()
+ *     xy_chart.title = 'XY Cosinus'
+ *     xy_chart.add('x = cos(y)', [(cos(x / 10.), x / 10.) for x in range(-50, 50, 5)])
+ *     xy_chart.add('y = cos(x)', [(x / 10., cos(x / 10.)) for x in range(-50, 50, 5)])
+ *     xy_chart.add('x = 1',  [(1, -5), (1, 5)])
+ *     xy_chart.add('x = -1', [(-1, -5), (-1, 5)])
+ *     xy_chart.add('y = 1',  [(-5, 1), (5, 1)])
+ *     xy_chart.add('y = -1', [(-5, -1), (5, -1)])
+ *     xy_chart.render()
+ * </pre>
+ */
+interface PyGalService {
+    String renderXYChart();
+}
\ No newline at end of file
diff --git a/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServiceMixed.java b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServiceMixed.java
new file mode 100644
index 0000000..c26bbd5
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServiceMixed.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example;
+
+import jakarta.inject.Singleton;
+import org.graalvm.polyglot.Value;
+
+import java.util.List;
+import java.util.stream.IntStream;
+
+@Singleton
+class PyGalServiceMixed implements PyGalService {
+    private final Value pythonFunctionXY;
+
+    PyGalServiceMixed(GraalPyContext graalPyContext) {
+        pythonFunctionXY = graalPyContext.eval(
+                // language=python
+                """
+                        import pygal
+                        
+                        def render_xy(title, label_datapoint_entries):
+                            xy_chart = pygal.XY()
+                            xy_chart.title = title
+                            for entry in label_datapoint_entries:
+                                xy_chart.add(entry.label(), entry.dataPoints())
+                            return xy_chart.render().decode()
+                        
+                        render_xy""");
+    }
+
+    public record Entry(String label, double[][] dataPoints) {
+    }
+
+    @Override
+    public String renderXYChart() {
+        String title = "XY Cosinus";
+        List<Entry> labelDatapointEntries = List.of(
+                new Entry("x = cos(y)", IntStream.range(-50, 50).filter(x -> x % 5 == 0).mapToObj(x -> new double[]{Math.cos(x / 10.0), x / 10.0}).toArray(double[][]::new)),
+                new Entry("y = cos(x)", IntStream.range(-50, 50).filter(x -> x % 5 == 0).mapToObj(x -> new double[]{x / 10.0, Math.cos(x / 10.0)}).toArray(double[][]::new)),
+                new Entry("x = 1", new double[][]{{1, -5}, {1, 5}}),
+                new Entry("x = -1", new double[][]{{-1, -5}, {-1, 5}}),
+                new Entry("y = 1", new double[][]{{-5, 1}, {5, 1}}),
+                new Entry("y = -1", new double[][]{{-5, -1}, {5, -1}})
+        );
+        return pythonFunctionXY.execute(title, labelDatapointEntries).asString();
+    }
+}
diff --git a/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServicePureJava.java b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServicePureJava.java
new file mode 100644
index 0000000..034f5ef
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServicePureJava.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example;
+
+import jakarta.inject.Singleton;
+import org.graalvm.polyglot.Value;
+
+import java.util.stream.IntStream;
+
+
+@Singleton
+class PyGalServicePureJava implements PyGalService {
+    private final PyGal pyGalModule;
+
+    PyGalServicePureJava(GraalPyContext graalPyContext) {
+        pyGalModule = graalPyContext.eval("import pygal; pygal").as(PyGal.class);
+    }
+
+    public interface PyGal {
+        XY XY();
+    }
+
+    public interface XY {
+        default void title(String title) {
+            Value.asValue(this).putMember("title", title);
+        }
+
+        void add(String label, Object[] values);
+
+        BytesIO render();
+    }
+
+    public interface BytesIO {
+        String decode();
+    }
+
+    @Override
+    public String renderXYChart() {
+        XY xyChart = pyGalModule.XY();
+        xyChart.title("XY Cosinus");
+        xyChart.add("x = cos(y)", IntStream.range(-50, 50).filter(x -> x % 5 == 0).mapToObj(x -> new double[]{Math.cos(x / 10.0), x / 10.0}).toArray(double[][]::new));
+        xyChart.add("y = cos(x)", IntStream.range(-50, 50).filter(x -> x % 5 == 0).mapToObj(x -> new double[]{x / 10.0, Math.cos(x / 10.0)}).toArray(double[][]::new));
+        xyChart.add("x = 1", new int[][]{{1, -5}, {1, 5}});
+        xyChart.add("x = -1", new int[][]{{-1, -5}, {-1, 5}});
+        xyChart.add("y = 1", new int[][]{{-5, 1}, {5, 1}});
+        xyChart.add("y = -1", new int[][]{{-5, -1}, {5, -1}});
+        return xyChart.render().decode();
+    }
+}
diff --git a/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServicePurePython.java b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServicePurePython.java
new file mode 100644
index 0000000..4ea2c9c
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServicePurePython.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example;
+
+import jakarta.inject.Singleton;
+
+@Singleton
+class PyGalServicePurePython implements PyGalService {
+    private final String purePythonXY;
+
+    PyGalServicePurePython(GraalPyContext graalPyContext) {
+        purePythonXY = graalPyContext.eval(
+                // language=python
+                """
+                        import pygal
+                        from math import cos
+                        xy_chart = pygal.XY()
+                        xy_chart.title = 'XY Cosinus'
+                        xy_chart.add('x = cos(y)', [(cos(x / 10.), x / 10.) for x in range(-50, 50, 5)])
+                        xy_chart.add('y = cos(x)', [(x / 10., cos(x / 10.)) for x in range(-50, 50, 5)])
+                        xy_chart.add('x = 1',  [(1, -5), (1, 5)])
+                        xy_chart.add('x = -1', [(-1, -5), (-1, 5)])
+                        xy_chart.add('y = 1',  [(-5, 1), (5, 1)])
+                        xy_chart.add('y = -1', [(-5, -1), (5, -1)])
+                        xy_chart.render().decode()
+                        """).asString();
+    }
+
+    @Override
+    public String renderXYChart() {
+        return purePythonXY;
+    }
+}
diff --git a/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServiceValueAPIDynamic.java b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServiceValueAPIDynamic.java
new file mode 100644
index 0000000..d96c261
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/src/main/java/com/example/PyGalServiceValueAPIDynamic.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example;
+
+
+import jakarta.inject.Singleton;
+import org.graalvm.polyglot.Value;
+
+import java.util.stream.IntStream;
+
+@Singleton
+class PyGalServiceValueAPIDynamic implements PyGalService {
+    private final Value pyGalModule;
+
+    PyGalServiceValueAPIDynamic(GraalPyContext context) {
+        pyGalModule = context.eval("import pygal; pygal");
+    }
+
+    @Override
+    public String renderXYChart() {
+        Value xyChart = pyGalModule.invokeMember("XY");
+        xyChart.putMember("title", "XY Cosinus");
+        xyChart.invokeMember("add", "x = cos(y)", IntStream.range(-50, 50).filter(x -> x % 5 == 0).mapToObj(x -> new double[]{Math.cos(x / 10.0), x / 10.0}).toArray(double[][]::new));
+        xyChart.invokeMember("add", "y = cos(x)", IntStream.range(-50, 50).filter(x -> x % 5 == 0).mapToObj(x -> new double[]{x / 10.0, Math.cos(x / 10.0)}).toArray(double[][]::new));
+        xyChart.invokeMember("add", "x = 1", new int[][]{{1, -5}, {1, 5}});
+        xyChart.invokeMember("add", "x = -1", new int[][]{{-1, -5}, {-1, 5}});
+        xyChart.invokeMember("add", "y = 1", new int[][]{{-5, 1}, {5, 1}});
+        xyChart.invokeMember("add", "y = -1", new int[][]{{-5, -1}, {5, -1}});
+        return xyChart.invokeMember("render").invokeMember("decode").asString();
+    }
+}
diff --git a/graalpy/graalpy-micronaut-pygal-charts/src/main/resources/application.properties b/graalpy/graalpy-micronaut-pygal-charts/src/main/resources/application.properties
new file mode 100644
index 0000000..caae289
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/src/main/resources/application.properties
@@ -0,0 +1,2 @@
+#Mon Sep 09 12:42:25 UTC 2024
+micronaut.application.name=demo
diff --git a/graalpy/graalpy-micronaut-pygal-charts/src/main/resources/logback.xml b/graalpy/graalpy-micronaut-pygal-charts/src/main/resources/logback.xml
new file mode 100644
index 0000000..2d77bda
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/src/main/resources/logback.xml
@@ -0,0 +1,14 @@
+<configuration>
+
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <!-- encoders are assigned the type
+             ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
+        <encoder>
+            <pattern>%cyan(%d{HH:mm:ss.SSS}) %gray([%thread]) %highlight(%-5level) %magenta(%logger{36}) - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <root level="info">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
diff --git a/graalpy/graalpy-micronaut-pygal-charts/src/test/java/com/example/DemoTest.java b/graalpy/graalpy-micronaut-pygal-charts/src/test/java/com/example/DemoTest.java
new file mode 100644
index 0000000..ac2273f
--- /dev/null
+++ b/graalpy/graalpy-micronaut-pygal-charts/src/test/java/com/example/DemoTest.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example;
+
+import io.micronaut.test.extensions.junit5.annotation.MicronautTest;
+import jakarta.inject.Inject;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.util.HashSet;
+import java.util.List;
+
+@MicronautTest
+class DemoTest {
+
+    @Inject
+    private PyGalServicePureJava pyGalServicePureJava;
+    @Inject
+    private PyGalServicePurePython pyGalServicePurePython;
+    @Inject
+    private PyGalServiceMixed pyGalServiceMixed;
+    @Inject
+    private PyGalServiceValueAPIDynamic pyGalServiceValueAPIDynamic;
+
+    @Test
+    void testIdentity() {
+        // Patterns to remove unique identifiers that PyGal adds every time a chart is rendered
+        String identifierPattern = "[a-z0-9]{8}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{12}";
+        String chartPattern = "chart-" + identifierPattern;
+        String pyGalConfigPattern = "pygal\\.config\\['" + identifierPattern + "']";
+
+        // We use a HashSet to check whether the charts are identical
+        HashSet<String> xyCharts = new HashSet<>();
+        for (PyGalService service : List.of(pyGalServicePureJava, pyGalServicePurePython, pyGalServiceMixed, pyGalServiceValueAPIDynamic)) {
+            String xyChart = service.renderXYChart();
+            String xzChartSanitized = xyChart.replaceAll(chartPattern, "chart").replaceAll(pyGalConfigPattern, "pygal.config");
+            xyCharts.add(xzChartSanitized);
+        }
+        Assertions.assertEquals(1, xyCharts.size(), "xyCharts are not identical");
+    }
+}
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/.gitignore b/graalpy/graalpy-spring-boot-pygal-charts/.gitignore
new file mode 100644
index 0000000..549e00a
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/.gitignore
@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/.mvn/wrapper/maven-wrapper.properties b/graalpy/graalpy-spring-boot-pygal-charts/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 0000000..d58dfb7
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,19 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+wrapperVersion=3.3.2
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/README.md b/graalpy/graalpy-spring-boot-pygal-charts/README.md
new file mode 100644
index 0000000..fc0a5c1
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/README.md
@@ -0,0 +1,45 @@
+## SVG Charts with GraalPy and Spring Boot
+
+This demo illustrates how GraalPy can be used to embed [Pygal](https://github.com/Kozea/pygal), a dynamic SVG charting library written in Python, in a Spring Boot application.
+In particular, this demo shows four different approaches to interact with Pygal from Java.
+
+## Preparation
+
+Install GraalVM for JDK 23 and set the value of `JAVA_HOME` accordingly.
+We recommend using [SDKMAN!](https://sdkman.io/). (For other download options, see [GraalVM Downloads](https://www.graalvm.org/downloads/).)
+
+```bash
+sdk install java 23-graal
+```
+
+## Run the Application
+
+To start the demo, simply run:
+
+```bash
+./mvnw package spring-boot:run
+```
+
+When the demo runs, open the follwing URLs in a browser:
+
+| URL                           | Service                       |
+|:------------------------------|:------------------------------|
+| http://localhost:8080/java    | [`PyGalServicePureJava`](src/main/java/com/example/demo/demo/PyGalServicePureJava.java)        |
+| http://localhost:8080/python  | [`PyGalServicePurePython`](src/main/java/com/example/demo/PyGalServicePurePython.java)      |
+| http://localhost:8080/mixed   | [`PyGalServiceMixed`](src/main/java/com/example/demo/PyGalServiceMixed.java)           |
+| http://localhost:8080/dynamic | [`PyGalServiceValueAPIDynamic`](src/main/java/com/example/demo/PyGalServiceValueAPIDynamic.java) |
+
+
+## Implementation Details
+
+The `DemoController` uses four services that all render the same XY chart using different implementations:
+
+- [`PyGalServicePureJava`](src/main/java/com/example/demo/PyGalServicePureJava.java) interacts with Pygal and Python using Java interfaces and `Value.as(Class<T> targetType)`. This is the recommended approach.
+- [`PyGalServicePurePython`](src/main/java/com/example/demo/PyGalServicePurePython.java) embeds the Python sample code from the Pygal documentation.
+- [`PyGalServiceMixed`](src/main/java/com/example/demo/PyGalServiceMixed.java) uses a Python function which is invoked with Java values.
+- [`PyGalServiceValueAPIDynamic`](src/main/java/com/example/demo/PyGalServiceValueAPIDynamic.java) uses the [Value](https://www.graalvm.org/sdk/javadoc/org/graalvm/polyglot/Value.html) API from the GraalVM SDK.
+
+
+The `DemoApplicationTests` ensures that all four service implementations render the same XY chart. Run it with `./mvnw test`.
+
+> Note: This demo uses a single [`GraalPyContext`](src/main/java/com/example/demo/GraalPyContextConfiguration.java), which can be accessed from only one thread at a time to evaluate Python code. Pure Python packages including Pygal can be used in multiple GraalPy contexts, for example one context per thread, to improve the throughput of the application. Other demos illustrate how to pool multiple contexts.
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/mvnw b/graalpy/graalpy-spring-boot-pygal-charts/mvnw
new file mode 100755
index 0000000..19529dd
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/mvnw
@@ -0,0 +1,259 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.3.2
+#
+# Optional ENV vars
+# -----------------
+#   JAVA_HOME - location of a JDK home dir, required when download maven via java source
+#   MVNW_REPOURL - repo url base for downloading maven distribution
+#   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+#   MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
+# ----------------------------------------------------------------------------
+
+set -euf
+[ "${MVNW_VERBOSE-}" != debug ] || set -x
+
+# OS specific support.
+native_path() { printf %s\\n "$1"; }
+case "$(uname)" in
+CYGWIN* | MINGW*)
+  [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
+  native_path() { cygpath --path --windows "$1"; }
+  ;;
+esac
+
+# set JAVACMD and JAVACCMD
+set_java_home() {
+  # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
+  if [ -n "${JAVA_HOME-}" ]; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ]; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+      JAVACCMD="$JAVA_HOME/jre/sh/javac"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+      JAVACCMD="$JAVA_HOME/bin/javac"
+
+      if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
+        echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
+        echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
+        return 1
+      fi
+    fi
+  else
+    JAVACMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v java
+    )" || :
+    JAVACCMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v javac
+    )" || :
+
+    if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
+      echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
+      return 1
+    fi
+  fi
+}
+
+# hash string like Java String::hashCode
+hash_string() {
+  str="${1:-}" h=0
+  while [ -n "$str" ]; do
+    char="${str%"${str#?}"}"
+    h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
+    str="${str#?}"
+  done
+  printf %x\\n $h
+}
+
+verbose() { :; }
+[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
+
+die() {
+  printf %s\\n "$1" >&2
+  exit 1
+}
+
+trim() {
+  # MWRAPPER-139:
+  #   Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
+  #   Needed for removing poorly interpreted newline sequences when running in more
+  #   exotic environments such as mingw bash on Windows.
+  printf "%s" "${1}" | tr -d '[:space:]'
+}
+
+# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
+while IFS="=" read -r key value; do
+  case "${key-}" in
+  distributionUrl) distributionUrl=$(trim "${value-}") ;;
+  distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
+  esac
+done <"${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in ${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+
+case "${distributionUrl##*/}" in
+maven-mvnd-*bin.*)
+  MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
+  case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
+  *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
+  :Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
+  :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
+  :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
+  *)
+    echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
+    distributionPlatform=linux-amd64
+    ;;
+  esac
+  distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
+  ;;
+maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
+*) MVN_CMD="mvn${0##*/mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
+esac
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
+distributionUrlName="${distributionUrl##*/}"
+distributionUrlNameMain="${distributionUrlName%.*}"
+distributionUrlNameMain="${distributionUrlNameMain%-bin}"
+MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
+MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
+
+exec_maven() {
+  unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
+  exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
+}
+
+if [ -d "$MAVEN_HOME" ]; then
+  verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  exec_maven "$@"
+fi
+
+case "${distributionUrl-}" in
+*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
+*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
+esac
+
+# prepare tmp dir
+if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
+  clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
+  trap clean HUP INT TERM EXIT
+else
+  die "cannot create temp dir"
+fi
+
+mkdir -p -- "${MAVEN_HOME%/*}"
+
+# Download and Install Apache Maven
+verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+verbose "Downloading from: $distributionUrl"
+verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+# select .zip or .tar.gz
+if ! command -v unzip >/dev/null; then
+  distributionUrl="${distributionUrl%.zip}.tar.gz"
+  distributionUrlName="${distributionUrl##*/}"
+fi
+
+# verbose opt
+__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
+[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
+
+# normalize http auth
+case "${MVNW_PASSWORD:+has-password}" in
+'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+esac
+
+if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
+  verbose "Found wget ... using wget"
+  wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
+elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
+  verbose "Found curl ... using curl"
+  curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
+elif set_java_home; then
+  verbose "Falling back to use Java to download"
+  javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
+  targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
+  cat >"$javaSource" <<-END
+	public class Downloader extends java.net.Authenticator
+	{
+	  protected java.net.PasswordAuthentication getPasswordAuthentication()
+	  {
+	    return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
+	  }
+	  public static void main( String[] args ) throws Exception
+	  {
+	    setDefault( new Downloader() );
+	    java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
+	  }
+	}
+	END
+  # For Cygwin/MinGW, switch paths to Windows format before running javac and java
+  verbose " - Compiling Downloader.java ..."
+  "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
+  verbose " - Running Downloader.java ..."
+  "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
+fi
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+if [ -n "${distributionSha256Sum-}" ]; then
+  distributionSha256Result=false
+  if [ "$MVN_CMD" = mvnd.sh ]; then
+    echo "Checksum validation is not supported for maven-mvnd." >&2
+    echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  elif command -v sha256sum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  elif command -v shasum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  else
+    echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
+    echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  fi
+  if [ $distributionSha256Result = false ]; then
+    echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
+    echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
+    exit 1
+  fi
+fi
+
+# unzip and move
+if command -v unzip >/dev/null; then
+  unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
+else
+  tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
+fi
+printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/mvnw.url"
+mv -- "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
+
+clean || :
+exec_maven "$@"
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/mvnw.cmd b/graalpy/graalpy-spring-boot-pygal-charts/mvnw.cmd
new file mode 100644
index 0000000..249bdf3
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/mvnw.cmd
@@ -0,0 +1,149 @@
+<# : batch portion
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.3.2
+@REM
+@REM Optional ENV vars
+@REM   MVNW_REPOURL - repo url base for downloading maven distribution
+@REM   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+@REM   MVNW_VERBOSE - true: enable verbose log; others: silence the output
+@REM ----------------------------------------------------------------------------
+
+@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
+@SET __MVNW_CMD__=
+@SET __MVNW_ERROR__=
+@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
+@SET PSModulePath=
+@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
+  IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
+)
+@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
+@SET __MVNW_PSMODULEP_SAVE=
+@SET __MVNW_ARG0_NAME__=
+@SET MVNW_USERNAME=
+@SET MVNW_PASSWORD=
+@IF NOT "%__MVNW_CMD__%"=="" (%__MVNW_CMD__% %*)
+@echo Cannot start maven from wrapper >&2 && exit /b 1
+@GOTO :EOF
+: end batch / begin powershell #>
+
+$ErrorActionPreference = "Stop"
+if ($env:MVNW_VERBOSE -eq "true") {
+  $VerbosePreference = "Continue"
+}
+
+# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
+$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
+if (!$distributionUrl) {
+  Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+}
+
+switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
+  "maven-mvnd-*" {
+    $USE_MVND = $true
+    $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
+    $MVN_CMD = "mvnd.cmd"
+    break
+  }
+  default {
+    $USE_MVND = $false
+    $MVN_CMD = $script -replace '^mvnw','mvn'
+    break
+  }
+}
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+if ($env:MVNW_REPOURL) {
+  $MVNW_REPO_PATTERN = if ($USE_MVND) { "/org/apache/maven/" } else { "/maven/mvnd/" }
+  $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace '^.*'+$MVNW_REPO_PATTERN,'')"
+}
+$distributionUrlName = $distributionUrl -replace '^.*/',''
+$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
+$MAVEN_HOME_PARENT = "$HOME/.m2/wrapper/dists/$distributionUrlNameMain"
+if ($env:MAVEN_USER_HOME) {
+  $MAVEN_HOME_PARENT = "$env:MAVEN_USER_HOME/wrapper/dists/$distributionUrlNameMain"
+}
+$MAVEN_HOME_NAME = ([System.Security.Cryptography.MD5]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
+$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
+
+if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
+  Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
+  exit $?
+}
+
+if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
+  Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
+}
+
+# prepare tmp dir
+$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
+$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
+$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
+trap {
+  if ($TMP_DOWNLOAD_DIR.Exists) {
+    try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+    catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+  }
+}
+
+New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
+
+# Download and Install Apache Maven
+Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+Write-Verbose "Downloading from: $distributionUrl"
+Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+$webclient = New-Object System.Net.WebClient
+if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
+  $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
+}
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
+if ($distributionSha256Sum) {
+  if ($USE_MVND) {
+    Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
+  }
+  Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
+  if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
+    Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
+  }
+}
+
+# unzip and move
+Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
+Rename-Item -Path "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" -NewName $MAVEN_HOME_NAME | Out-Null
+try {
+  Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
+} catch {
+  if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
+    Write-Error "fail to move MAVEN_HOME"
+  }
+} finally {
+  try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+  catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+}
+
+Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/pom.xml b/graalpy/graalpy-spring-boot-pygal-charts/pom.xml
new file mode 100644
index 0000000..fb0ba13
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/pom.xml
@@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.3.3</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>com.example</groupId>
+    <artifactId>demo</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>demo</name>
+    <description>Demo project for Spring Boot</description>
+    <url/>
+    <licenses>
+        <license/>
+    </licenses>
+    <developers>
+        <developer/>
+    </developers>
+    <scm>
+        <connection/>
+        <developerConnection/>
+        <tag/>
+        <url/>
+    </scm>
+    <properties>
+        <graalpy.version>24.1.0</graalpy.version>
+        <java.version>21</java.version>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.graalvm.polyglot</groupId>
+            <artifactId>polyglot</artifactId>
+            <version>${graalpy.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.graalvm.polyglot</groupId>
+            <artifactId>python</artifactId>
+            <version>${graalpy.version}</version>
+            <type>pom</type>
+        </dependency>
+
+        <dependency>
+            <groupId>org.graalvm.python</groupId>
+            <artifactId>python-embedding</artifactId>
+            <version>${graalpy.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.graalvm.python</groupId>
+                <artifactId>graalpy-maven-plugin</artifactId>
+                <version>${graalpy.version}</version>
+                <executions>
+                    <execution>
+                        <configuration>
+                            <packages>
+                                <package>pygal==3.0.5</package>
+                            </packages>
+                        </configuration>
+                        <goals>
+                            <goal>process-graalpy-resources</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.graalvm.buildtools</groupId>
+                <artifactId>native-maven-plugin</artifactId>
+            </plugin>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <optimizedLaunch>false</optimizedLaunch>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/DemoApplication.java b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/DemoApplication.java
new file mode 100644
index 0000000..71ffad1
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/DemoApplication.java
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example.demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class DemoApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(DemoApplication.class, args);
+    }
+
+}
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/DemoController.java b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/DemoController.java
new file mode 100644
index 0000000..cde336f
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/DemoController.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example.demo;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class DemoController {
+
+    private final PyGalServicePurePython pyGalServicePurePython;
+    private final PyGalServicePureJava pyGalServicePureJava;
+    private final PyGalServiceMixed pyGalServiceMixed;
+    private final PyGalServiceValueAPIDynamic pyGalServiceValueAPIDynamic;
+
+    public DemoController(PyGalServicePurePython pyGalServicePurePython, PyGalServicePureJava pyGalServicePureJava, PyGalServiceMixed pyGalServiceMixed, PyGalServiceValueAPIDynamic pyGalServiceValueAPIDynamic) {
+        this.pyGalServicePurePython = pyGalServicePurePython;
+        this.pyGalServicePureJava = pyGalServicePureJava;
+        this.pyGalServiceMixed = pyGalServiceMixed;
+        this.pyGalServiceValueAPIDynamic = pyGalServiceValueAPIDynamic;
+    }
+
+    @GetMapping(value = "/python", produces = "image/svg+xml")
+    public String renderXYChartPurePython() {
+        return pyGalServicePurePython.renderXYChart();
+    }
+
+    @GetMapping(value = "/java", produces = "image/svg+xml")
+    public String renderXYChartPureJava() {
+        return pyGalServicePureJava.renderXYChart();
+    }
+
+    @GetMapping(value = "/mixed", produces = "image/svg+xml")
+    public String renderXYChartMixed() {
+        return pyGalServiceMixed.renderXYChart();
+    }
+
+    @GetMapping(value = "/dynamic", produces = "image/svg+xml")
+    public String renderXYChartValueAPIDynamic() {
+        return pyGalServiceValueAPIDynamic.renderXYChart();
+    }
+}
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/GraalPyContextConfiguration.java b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/GraalPyContextConfiguration.java
new file mode 100644
index 0000000..8978e7e
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/GraalPyContextConfiguration.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example.demo;
+
+import org.graalvm.polyglot.Context;
+import org.graalvm.polyglot.Value;
+import org.graalvm.python.embedding.utils.GraalPyResources;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class GraalPyContextConfiguration {
+    /*
+     * Make GraalPy context available for injection as a Spring bean.
+     */
+    @Bean(destroyMethod = "close")
+    public GraalPyContext graalPyContext() {
+        Context context = GraalPyResources.createContext();
+        context.initialize("python");
+        return new GraalPyContext(context);
+    }
+
+    public record GraalPyContext(Context context) {
+        public Value eval(String source) {
+            return context.eval("python", source);
+        }
+
+        public void close() {
+            context.close(true);
+        }
+    }
+}
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalService.java b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalService.java
new file mode 100644
index 0000000..b4d4063
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalService.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example.demo;
+
+/**
+ * <a href="https://www.pygal.org/en/stable/documentation/types/xy.html">Example PyGal code</a>:
+ * <pre>
+ *     from math import cos
+ *     xy_chart = pygal.XY()
+ *     xy_chart.title = 'XY Cosinus'
+ *     xy_chart.add('x = cos(y)', [(cos(x / 10.), x / 10.) for x in range(-50, 50, 5)])
+ *     xy_chart.add('y = cos(x)', [(x / 10., cos(x / 10.)) for x in range(-50, 50, 5)])
+ *     xy_chart.add('x = 1',  [(1, -5), (1, 5)])
+ *     xy_chart.add('x = -1', [(-1, -5), (-1, 5)])
+ *     xy_chart.add('y = 1',  [(-5, 1), (5, 1)])
+ *     xy_chart.add('y = -1', [(-5, -1), (5, -1)])
+ *     xy_chart.render()
+ * </pre>
+ */
+interface PyGalService {
+    String renderXYChart();
+}
\ No newline at end of file
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServiceMixed.java b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServiceMixed.java
new file mode 100644
index 0000000..f0fc98b
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServiceMixed.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example.demo;
+
+import com.example.demo.GraalPyContextConfiguration.GraalPyContext;
+import org.graalvm.polyglot.Value;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+import java.util.stream.IntStream;
+
+@Service
+public class PyGalServiceMixed implements PyGalService {
+    private final Value pythonFunctionXY;
+
+    PyGalServiceMixed(GraalPyContext graalPyContext) {
+        pythonFunctionXY = graalPyContext.eval(
+                // language=python
+                """
+                        import pygal
+                        
+                        def render_xy(title, label_datapoint_entries):
+                            xy_chart = pygal.XY()
+                            xy_chart.title = title
+                            for entry in label_datapoint_entries:
+                                xy_chart.add(entry.label(), entry.dataPoints())
+                            return xy_chart.render().decode()
+                        
+                        render_xy""");
+    }
+
+    public record Entry(String label, double[][] dataPoints) {
+    }
+
+    @Override
+    public String renderXYChart() {
+        String title = "XY Cosinus";
+        List<Entry> labelDatapointEntries = List.of(
+                new Entry("x = cos(y)", IntStream.range(-50, 50).filter(x -> x % 5 == 0).mapToObj(x -> new double[]{Math.cos(x / 10.0), x / 10.0}).toArray(double[][]::new)),
+                new Entry("y = cos(x)", IntStream.range(-50, 50).filter(x -> x % 5 == 0).mapToObj(x -> new double[]{x / 10.0, Math.cos(x / 10.0)}).toArray(double[][]::new)),
+                new Entry("x = 1", new double[][]{{1, -5}, {1, 5}}),
+                new Entry("x = -1", new double[][]{{-1, -5}, {-1, 5}}),
+                new Entry("y = 1", new double[][]{{-5, 1}, {5, 1}}),
+                new Entry("y = -1", new double[][]{{-5, -1}, {5, -1}})
+        );
+        return pythonFunctionXY.execute(title, labelDatapointEntries).asString();
+    }
+}
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServicePureJava.java b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServicePureJava.java
new file mode 100644
index 0000000..6106d4f
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServicePureJava.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example.demo;
+
+import com.example.demo.GraalPyContextConfiguration.GraalPyContext;
+import org.graalvm.polyglot.Value;
+import org.springframework.stereotype.Service;
+
+import java.util.stream.IntStream;
+
+
+@Service
+public class PyGalServicePureJava implements PyGalService {
+    private final PyGal pyGalModule;
+
+    PyGalServicePureJava(GraalPyContext graalPyContext) {
+        pyGalModule = graalPyContext.eval("import pygal; pygal").as(PyGal.class);
+    }
+
+    public interface PyGal {
+        XY XY();
+    }
+
+    public interface XY {
+        default void title(String title) {
+            Value.asValue(this).putMember("title", title);
+        }
+
+        void add(String label, Object[] values);
+
+        BytesIO render();
+    }
+
+    public interface BytesIO {
+        String decode();
+    }
+
+    @Override
+    public String renderXYChart() {
+        XY xyChart = pyGalModule.XY();
+        xyChart.title("XY Cosinus");
+        xyChart.add("x = cos(y)", IntStream.range(-50, 50).filter(x -> x % 5 == 0).mapToObj(x -> new double[]{Math.cos(x / 10.0), x / 10.0}).toArray(double[][]::new));
+        xyChart.add("y = cos(x)", IntStream.range(-50, 50).filter(x -> x % 5 == 0).mapToObj(x -> new double[]{x / 10.0, Math.cos(x / 10.0)}).toArray(double[][]::new));
+        xyChart.add("x = 1", new int[][]{{1, -5}, {1, 5}});
+        xyChart.add("x = -1", new int[][]{{-1, -5}, {-1, 5}});
+        xyChart.add("y = 1", new int[][]{{-5, 1}, {5, 1}});
+        xyChart.add("y = -1", new int[][]{{-5, -1}, {5, -1}});
+        return xyChart.render().decode();
+    }
+}
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServicePurePython.java b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServicePurePython.java
new file mode 100644
index 0000000..69d9b2b
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServicePurePython.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example.demo;
+
+import com.example.demo.GraalPyContextConfiguration.GraalPyContext;
+import org.springframework.stereotype.Service;
+
+@Service
+public class PyGalServicePurePython implements PyGalService {
+    private final String purePythonXY;
+
+    PyGalServicePurePython(GraalPyContext graalPyContext) {
+        purePythonXY = graalPyContext.eval(
+                // language=python
+                """
+                        import pygal
+                        from math import cos
+                        xy_chart = pygal.XY()
+                        xy_chart.title = 'XY Cosinus'
+                        xy_chart.add('x = cos(y)', [(cos(x / 10.), x / 10.) for x in range(-50, 50, 5)])
+                        xy_chart.add('y = cos(x)', [(x / 10., cos(x / 10.)) for x in range(-50, 50, 5)])
+                        xy_chart.add('x = 1',  [(1, -5), (1, 5)])
+                        xy_chart.add('x = -1', [(-1, -5), (-1, 5)])
+                        xy_chart.add('y = 1',  [(-5, 1), (5, 1)])
+                        xy_chart.add('y = -1', [(-5, -1), (5, -1)])
+                        xy_chart.render().decode()
+                        """).asString();
+    }
+
+    @Override
+    public String renderXYChart() {
+        return purePythonXY;
+    }
+}
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServiceValueAPIDynamic.java b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServiceValueAPIDynamic.java
new file mode 100644
index 0000000..6051e8e
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/src/main/java/com/example/demo/PyGalServiceValueAPIDynamic.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example.demo;
+
+
+import com.example.demo.GraalPyContextConfiguration.GraalPyContext;
+import org.graalvm.polyglot.Value;
+import org.springframework.stereotype.Service;
+
+import java.util.stream.IntStream;
+
+@Service
+public class PyGalServiceValueAPIDynamic implements PyGalService {
+    private final Value pyGalModule;
+
+    PyGalServiceValueAPIDynamic(GraalPyContext context) {
+        pyGalModule = context.eval("import pygal; pygal");
+    }
+
+    @Override
+    public String renderXYChart() {
+        Value xyChart = pyGalModule.invokeMember("XY");
+        xyChart.putMember("title", "XY Cosinus");
+        xyChart.invokeMember("add", "x = cos(y)", IntStream.range(-50, 50).filter(x -> x % 5 == 0).mapToObj(x -> new double[]{Math.cos(x / 10.0), x / 10.0}).toArray(double[][]::new));
+        xyChart.invokeMember("add", "y = cos(x)", IntStream.range(-50, 50).filter(x -> x % 5 == 0).mapToObj(x -> new double[]{x / 10.0, Math.cos(x / 10.0)}).toArray(double[][]::new));
+        xyChart.invokeMember("add", "x = 1", new int[][]{{1, -5}, {1, 5}});
+        xyChart.invokeMember("add", "x = -1", new int[][]{{-1, -5}, {-1, 5}});
+        xyChart.invokeMember("add", "y = 1", new int[][]{{-5, 1}, {5, 1}});
+        xyChart.invokeMember("add", "y = -1", new int[][]{{-5, -1}, {5, -1}});
+        return xyChart.invokeMember("render").invokeMember("decode").asString();
+    }
+}
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/src/main/resources/META-INF/native-image/com.example/demo/proxy-config.json b/graalpy/graalpy-spring-boot-pygal-charts/src/main/resources/META-INF/native-image/com.example/demo/proxy-config.json
new file mode 100644
index 0000000..7c75700
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/src/main/resources/META-INF/native-image/com.example/demo/proxy-config.json
@@ -0,0 +1,17 @@
+[
+  {
+    "interfaces": [
+      "com.example.demo.PyGalServicePureJava$PyGal"
+    ]
+  },
+  {
+    "interfaces": [
+      "com.example.demo.PyGalServicePureJava$XY"
+    ]
+  },
+  {
+    "interfaces": [
+      "com.example.demo.PyGalServicePureJava$BytesIO"
+    ]
+  }
+]
\ No newline at end of file
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/src/main/resources/META-INF/native-image/com.example/demo/reflect-config.json b/graalpy/graalpy-spring-boot-pygal-charts/src/main/resources/META-INF/native-image/com.example/demo/reflect-config.json
new file mode 100644
index 0000000..0f6ae4e
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/src/main/resources/META-INF/native-image/com.example/demo/reflect-config.json
@@ -0,0 +1,14 @@
+[
+  {
+    "type": "com.example.demo.PyGalServiceMixed$Entry"
+  },
+  {
+    "type": "com.example.demo.PyGalServicePureJava$BytesIO"
+  },
+  {
+    "type": "com.example.demo.PyGalServicePureJava$PyGal"
+  },
+  {
+    "type": "com.example.demo.PyGalServicePureJava$XY"
+  }
+]
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/src/main/resources/application.properties b/graalpy/graalpy-spring-boot-pygal-charts/src/main/resources/application.properties
new file mode 100644
index 0000000..2109a44
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/src/main/resources/application.properties
@@ -0,0 +1 @@
+spring.application.name=demo
diff --git a/graalpy/graalpy-spring-boot-pygal-charts/src/test/java/com/example/demo/DemoApplicationTests.java b/graalpy/graalpy-spring-boot-pygal-charts/src/test/java/com/example/demo/DemoApplicationTests.java
new file mode 100644
index 0000000..f93ac80
--- /dev/null
+++ b/graalpy/graalpy-spring-boot-pygal-charts/src/test/java/com/example/demo/DemoApplicationTests.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2024, Oracle and/or its affiliates.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at https://opensource.org/license/UPL.
+ */
+
+package com.example.demo;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import java.util.HashSet;
+import java.util.List;
+
+@SpringBootTest
+class DemoApplicationTests {
+
+    @Autowired
+    private PyGalServicePureJava pyGalServicePureJava;
+    @Autowired
+    private PyGalServicePurePython pyGalServicePurePython;
+    @Autowired
+    private PyGalServiceMixed pyGalServiceMixed;
+    @Autowired
+    private PyGalServiceValueAPIDynamic pyGalServiceValueAPIDynamic;
+
+    @Test
+    void testIdentity() {
+        // Patterns to remove unique identifiers that PyGal adds every time a chart is rendered
+        String identifierPattern = "[a-z0-9]{8}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{12}";
+        String chartPattern = "chart-" + identifierPattern;
+        String pyGalConfigPattern = "pygal\\.config\\['" + identifierPattern + "']";
+
+        // We use a HashSet to check whether the charts are identical
+        HashSet<String> xyCharts = new HashSet<>();
+        for (PyGalService service : List.of(pyGalServicePureJava, pyGalServicePurePython, pyGalServiceMixed, pyGalServiceValueAPIDynamic)) {
+            String xyChart = service.renderXYChart();
+            String xzChartSanitized = xyChart.replaceAll(chartPattern, "chart").replaceAll(pyGalConfigPattern, "pygal.config");
+            xyCharts.add(xzChartSanitized);
+        }
+        Assertions.assertEquals(1, xyCharts.size(), "xyCharts are not identical");
+    }
+}