Added config generator for GraalVM and updated config.

README.md

@@ -562,16 +562,28 @@ NATIVE IMAGE
 ------------
 
 Since version 2.4.1, Datafaker provides **experimental** native-image support.
-This is done by providing a `reachability-metadata.json` file in the META-INF directory.
+This is done by shipping GraalVM reachability metadata in the `META-INF/native-image` directory. The agent generates
+several configuration files, each covering a different aspect of the runtime:
 
-This file is currently created manually by running all the unit tests, and having an agent collect tracing info:
+* `reflect-config.json` – classes, methods and fields accessed via reflection
+* `resource-config.json` – resources loaded at runtime (including locale `.yml` files)
+* `jni-config.json` – JNI-reachable classes, methods and fields
+* `proxy-config.json` – dynamic proxy interface lists
+* `serialization-config.json` – serialization types
+* `predefined-classes-config.json` – classes generated/loaded at runtime
+
+These files can be regenerated by running tests with the GraalVM native-image agent using the provided Maven profile:
 
 ```
--agentlib:native-image-agent=config-output-dir=src/main/resources/META-INF/native-image
+mvn test -Pnative-image-agent -PnoGpg
 ```
 
-Future enhancements should automate and improve this process, but if you encounter any unexpected behaviour,
-feel free to report an issue.
+This requires a GraalVM JDK to be installed and configured. The agent will collect tracing info during test execution
+and merge the metadata files into `src/main/resources/META-INF/native-image`. The profile uses `config-merge-dir`
+so existing hand-crafted configuration (e.g. `reachability-metadata.json`) is preserved. Review the resulting diff
+before committing and drop any entries that are specific to the test runtime (JUnit, Surefire, Mockito, ByteBuddy).
+
+If you encounter any unexpected behaviour with native images, feel free to report an issue.
 
 An example usage of this can be found here: https://github.com/datafaker-net/datafaker-native-demo
 

pom.xml

@@ -550,5 +550,23 @@
                 </plugins>
             </build>
         </profile>
+        <!-- Profile to generate native-image reachability metadata by running tests with the GraalVM agent -->
+        <profile>
+            <id>native-image-agent</id>
+            <properties>
+                <native.image.agent.output.dir>${project.basedir}/src/main/resources/META-INF/native-image</native.image.agent.output.dir>
+            </properties>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-surefire-plugin</artifactId>
+                        <configuration>
+                            <argLine>${surefire.argline} -agentlib:native-image-agent=config-merge-dir=${native.image.agent.output.dir}</argLine>
+                        </configuration>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
     </profiles>
 </project>

src/main/resources/META-INF/native-image/jni-config.json

@@ -0,0 +1,251 @@
+[
+{
+  "name":"[Lsun.java2d.loops.GraphicsPrimitive;"
+},
+{
+  "name":"com.apple.eawt._AppEventHandler",
+  "methods":[{"name":"handleNativeNotification","parameterTypes":["int"] }]
+},
+{
+  "name":"com.apple.eawt._AppMenuBarHandler",
+  "methods":[{"name":"initMenuStates","parameterTypes":["boolean","boolean","boolean","boolean"] }]
+},
+{
+  "name":"com.sun.imageio.plugins.jpeg.JPEGImageReader",
+  "methods":[{"name":"acceptPixels","parameterTypes":["int","boolean"] }, {"name":"passComplete","parameterTypes":[] }, {"name":"passStarted","parameterTypes":["int"] }, {"name":"pushBack","parameterTypes":["int"] }, {"name":"readInputData","parameterTypes":["byte[]","int","int"] }, {"name":"setImageData","parameterTypes":["int","int","int","int","int","byte[]"] }, {"name":"skipInputBytes","parameterTypes":["long"] }, {"name":"skipPastImage","parameterTypes":["int"] }, {"name":"warningOccurred","parameterTypes":["int"] }, {"name":"warningWithMessage","parameterTypes":["java.lang.String"] }]
+},
+{
+  "name":"com.sun.imageio.plugins.jpeg.JPEGImageWriter",
+  "methods":[{"name":"grabPixels","parameterTypes":["int"] }, {"name":"warningOccurred","parameterTypes":["int"] }, {"name":"warningWithMessage","parameterTypes":["java.lang.String"] }, {"name":"writeMetadata","parameterTypes":[] }, {"name":"writeOutputData","parameterTypes":["byte[]","int","int"] }]
+},
+{
+  "name":"java.awt.AlphaComposite",
+  "fields":[{"name":"extraAlpha"}, {"name":"rule"}]
+},
+{
+  "name":"java.awt.Color",
+  "methods":[{"name":"getRGB","parameterTypes":[] }]
+},
+{
+  "name":"java.awt.DisplayMode",
+  "methods":[{"name":"<init>","parameterTypes":["int","int","int","int"] }]
+},
+{
+  "name":"java.awt.event.InputEvent",
+  "methods":[{"name":"getButtonDownMasks","parameterTypes":[] }]
+},
+{
+  "name":"java.awt.geom.AffineTransform",
+  "fields":[{"name":"m00"}, {"name":"m01"}, {"name":"m02"}, {"name":"m10"}, {"name":"m11"}, {"name":"m12"}]
+},
+{
+  "name":"java.awt.geom.Path2D",
+  "fields":[{"name":"numTypes"}, {"name":"pointTypes"}, {"name":"windingRule"}]
+},
+{
+  "name":"java.awt.geom.Path2D$Float",
+  "fields":[{"name":"floatCoords"}]
+},
+{
+  "name":"java.awt.geom.Rectangle2D$Double",
+  "methods":[{"name":"<init>","parameterTypes":["double","double","double","double"] }]
+},
+{
+  "name":"java.awt.image.BufferedImage",
+  "fields":[{"name":"colorModel"}, {"name":"imageType"}, {"name":"raster"}],
+  "methods":[{"name":"getRGB","parameterTypes":["int","int","int","int","int[]","int","int"] }, {"name":"setRGB","parameterTypes":["int","int","int","int","int[]","int","int"] }]
+},
+{
+  "name":"java.awt.image.ColorModel",
+  "fields":[{"name":"colorSpace"}, {"name":"colorSpaceType"}, {"name":"isAlphaPremultiplied"}, {"name":"is_sRGB"}, {"name":"nBits"}, {"name":"numComponents"}, {"name":"pData"}, {"name":"supportsAlpha"}, {"name":"transparency"}],
+  "methods":[{"name":"getRGBdefault","parameterTypes":[] }]
+},
+{
+  "name":"java.awt.image.IndexColorModel",
+  "fields":[{"name":"allgrayopaque"}, {"name":"colorData"}, {"name":"map_size"}, {"name":"rgb"}, {"name":"transparent_index"}]
+},
+{
+  "name":"java.awt.image.Raster",
+  "fields":[{"name":"dataBuffer"}, {"name":"height"}, {"name":"minX"}, {"name":"minY"}, {"name":"numBands"}, {"name":"numDataElements"}, {"name":"sampleModel"}, {"name":"sampleModelTranslateX"}, {"name":"sampleModelTranslateY"}, {"name":"width"}]
+},
+{
+  "name":"java.awt.image.SampleModel",
+  "fields":[{"name":"height"}, {"name":"width"}],
+  "methods":[{"name":"getPixels","parameterTypes":["int","int","int","int","int[]","java.awt.image.DataBuffer"] }, {"name":"setPixels","parameterTypes":["int","int","int","int","int[]","java.awt.image.DataBuffer"] }]
+},
+{
+  "name":"java.awt.image.SinglePixelPackedSampleModel",
+  "fields":[{"name":"bitMasks"}, {"name":"bitOffsets"}, {"name":"bitSizes"}, {"name":"maxBitSize"}]
+},
+{
+  "name":"java.lang.String",
+  "methods":[{"name":"lastIndexOf","parameterTypes":["int"] }, {"name":"substring","parameterTypes":["int"] }]
+},
+{
+  "name":"java.lang.System",
+  "methods":[{"name":"getProperty","parameterTypes":["java.lang.String"] }, {"name":"load","parameterTypes":["java.lang.String"] }, {"name":"setProperty","parameterTypes":["java.lang.String","java.lang.String"] }]
+},
+{
+  "name":"javax.imageio.plugins.jpeg.JPEGHuffmanTable",
+  "fields":[{"name":"lengths"}, {"name":"values"}]
+},
+{
+  "name":"javax.imageio.plugins.jpeg.JPEGQTable",
+  "fields":[{"name":"qTable"}]
+},
+{
+  "name":"sun.awt.AWTAutoShutdown",
+  "methods":[{"name":"notifyToolkitThreadBusy","parameterTypes":[] }, {"name":"notifyToolkitThreadFree","parameterTypes":[] }]
+},
+{
+  "name":"sun.awt.SunHints",
+  "fields":[{"name":"INTVAL_STROKE_PURE"}]
+},
+{
+  "name":"sun.awt.image.BufImgSurfaceData$ICMColorData",
+  "fields":[{"name":"pData"}],
+  "methods":[{"name":"<init>","parameterTypes":["long"] }]
+},
+{
+  "name":"sun.awt.image.ByteComponentRaster",
+  "fields":[{"name":"data"}, {"name":"dataOffsets"}, {"name":"pixelStride"}, {"name":"scanlineStride"}, {"name":"type"}]
+},
+{
+  "name":"sun.awt.image.IntegerComponentRaster",
+  "fields":[{"name":"data"}, {"name":"dataOffsets"}, {"name":"pixelStride"}, {"name":"scanlineStride"}, {"name":"type"}]
+},
+{
+  "name":"sun.instrument.InstrumentationImpl",
+  "methods":[{"name":"<init>","parameterTypes":["long","boolean","boolean"] }, {"name":"loadClassAndCallAgentmain","parameterTypes":["java.lang.String","java.lang.String"] }, {"name":"loadClassAndCallPremain","parameterTypes":["java.lang.String","java.lang.String"] }, {"name":"transform","parameterTypes":["java.lang.Module","java.lang.ClassLoader","java.lang.String","java.lang.Class","java.security.ProtectionDomain","byte[]","boolean"] }]
+},
+{
+  "name":"sun.java2d.Disposer",
+  "methods":[{"name":"addRecord","parameterTypes":["java.lang.Object","long","long"] }]
+},
+{
+  "name":"sun.java2d.InvalidPipeException"
+},
+{
+  "name":"sun.java2d.NullSurfaceData"
+},
+{
+  "name":"sun.java2d.SunGraphics2D",
+  "fields":[{"name":"clipRegion"}, {"name":"composite"}, {"name":"eargb"}, {"name":"lcdTextContrast"}, {"name":"pixel"}, {"name":"strokeHint"}]
+},
+{
+  "name":"sun.java2d.SurfaceData",
+  "fields":[{"name":"pData"}, {"name":"valid"}]
+},
+{
+  "name":"sun.java2d.loops.Blit",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.BlitBg",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.CompositeType",
+  "fields":[{"name":"AnyAlpha"}, {"name":"Src"}, {"name":"SrcNoEa"}, {"name":"SrcOver"}, {"name":"SrcOverNoEa"}, {"name":"Xor"}]
+},
+{
+  "name":"sun.java2d.loops.DrawGlyphList",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.DrawGlyphListAA",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.DrawGlyphListLCD",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.DrawLine",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.DrawParallelogram",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.DrawPath",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.DrawPolygons",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.DrawRect",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.FillParallelogram",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.FillPath",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.FillRect",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.FillSpans",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.GraphicsPrimitive",
+  "fields":[{"name":"pNativePrim"}]
+},
+{
+  "name":"sun.java2d.loops.GraphicsPrimitiveMgr",
+  "methods":[{"name":"register","parameterTypes":["sun.java2d.loops.GraphicsPrimitive[]"] }]
+},
+{
+  "name":"sun.java2d.loops.MaskBlit",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.MaskFill",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.ScaledBlit",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.SurfaceType",
+  "fields":[{"name":"Any3Byte"}, {"name":"Any4Byte"}, {"name":"AnyByte"}, {"name":"AnyColor"}, {"name":"AnyInt"}, {"name":"AnyShort"}, {"name":"ByteBinary1Bit"}, {"name":"ByteBinary2Bit"}, {"name":"ByteBinary4Bit"}, {"name":"ByteGray"}, {"name":"ByteIndexed"}, {"name":"ByteIndexedBm"}, {"name":"FourByteAbgr"}, {"name":"FourByteAbgrPre"}, {"name":"Index12Gray"}, {"name":"Index8Gray"}, {"name":"IntArgb"}, {"name":"IntArgbBm"}, {"name":"IntArgbPre"}, {"name":"IntBgr"}, {"name":"IntRgb"}, {"name":"IntRgbx"}, {"name":"OpaqueColor"}, {"name":"ThreeByteBgr"}, {"name":"Ushort4444Argb"}, {"name":"Ushort555Rgb"}, {"name":"Ushort555Rgbx"}, {"name":"Ushort565Rgb"}, {"name":"UshortGray"}, {"name":"UshortIndexed"}]
+},
+{
+  "name":"sun.java2d.loops.TransformHelper",
+  "methods":[{"name":"<init>","parameterTypes":["long","sun.java2d.loops.SurfaceType","sun.java2d.loops.CompositeType","sun.java2d.loops.SurfaceType"] }]
+},
+{
+  "name":"sun.java2d.loops.XORComposite",
+  "fields":[{"name":"alphaMask"}, {"name":"xorColor"}, {"name":"xorPixel"}]
+},
+{
+  "name":"sun.java2d.opengl.OGLSurfaceData",
+  "fields":[{"name":"isBIOpShaderEnabled"}, {"name":"isFBObjectEnabled"}, {"name":"isGradShaderEnabled"}, {"name":"isLCDShaderEnabled"}]
+},
+{
+  "name":"sun.java2d.pipe.Region",
+  "fields":[{"name":"bands"}, {"name":"endIndex"}, {"name":"hix"}, {"name":"hiy"}, {"name":"lox"}, {"name":"loy"}]
+},
+{
+  "name":"sun.java2d.pipe.RegionIterator",
+  "fields":[{"name":"curIndex"}, {"name":"numXbands"}, {"name":"region"}]
+},
+{
+  "name":"sun.lwawt.macosx.LWCToolkit",
+  "methods":[{"name":"installToolkitThreadInJava","parameterTypes":[] }]
+},
+{
+  "name":"sun.management.VMManagementImpl",
+  "fields":[{"name":"compTimeMonitoringSupport"}, {"name":"currentThreadCpuTimeSupport"}, {"name":"objectMonitorUsageSupport"}, {"name":"otherThreadCpuTimeSupport"}, {"name":"remoteDiagnosticCommandsSupport"}, {"name":"synchronizerUsageSupport"}, {"name":"threadAllocatedMemorySupport"}, {"name":"threadContentionMonitoringSupport"}]
+}
+]