Remove nashornPolyfills #1544

src/main/java/com/enonic/lib/react4xp/ssr/ServerSideRenderer.java

@@ -11,7 +11,6 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.enonic.lib.react4xp.ssr.engine.EngineFactory;
 import com.enonic.lib.react4xp.ssr.errors.ErrorHandler;
 import com.enonic.lib.react4xp.ssr.renderer.Renderer;
 import com.enonic.lib.react4xp.ssr.renderer.RendererFactory;
@@ -43,8 +42,7 @@ public void initialize( BeanContext context )
     }
 
     public void setup( String appName, String scriptsHome, String libraryName, String chunkfilesHome, String entriesJsonFilename,
-                       String chunksGlobalsJsonFilename, String statsComponentsFilename, Integer ssrMaxThreads,
-                       String engineName )
+                       String chunksGlobalsJsonFilename, String statsComponentsFilename, Integer ssrMaxThreads )
     {
         if ( isInitialized.compareAndSet( false, true ) )
         {
@@ -59,8 +57,7 @@ public void setup( String appName, String scriptsHome, String libraryName, Strin
                                 statsComponentsFilename );
 
                 final ResourceReader resourceReader = new ResourceReaderImpl( resourceServiceSupplier, ApplicationKey.from( config.APP_NAME ) );
-                final EngineFactory engineFactory = new EngineFactory( engineName );
-                final RendererFactory rendererFactory = new RendererFactory( engineFactory, resourceReader, config );
+                final RendererFactory rendererFactory = new RendererFactory( resourceReader, config );
 
                 rendererPool = new GenericObjectPool<>( rendererFactory, createPoolConfig( poolSize ) );
             }

src/main/java/com/enonic/lib/react4xp/ssr/engine/EngineFactory.java

@@ -1,18 +1,47 @@
 package com.enonic.lib.react4xp.ssr.engine;
 
 import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class EngineFactory
 {
-    private final EngineBuilderPlatform engineBuilder;
+    private final static Logger LOG = LoggerFactory.getLogger( EngineFactory.class );
+
+    private static final ScriptEngineManager SCRIPT_ENGINE_MANAGER;
 
-    public EngineFactory( String engineName )
+    static
     {
-        this.engineBuilder = new EngineBuilderPlatform( engineName );
+        final ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
+        Thread.currentThread().setContextClassLoader( ClassLoader.getSystemClassLoader() );
+        try
+        {
+            SCRIPT_ENGINE_MANAGER = new ScriptEngineManager();
+        }
+        finally
+        {
+            Thread.currentThread().setContextClassLoader( classLoader );
+        }
     }
 
-    public ScriptEngine buildEngine()
+    public static ScriptEngine buildEngine()
     {
-        return engineBuilder.buildEngine();
+        LOG.debug( "Init script engine");
+        final ScriptEngine engineByName;
+
+        final ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
+        Thread.currentThread().setContextClassLoader( ClassLoader.getSystemClassLoader() );
+        try
+        {
+            engineByName = SCRIPT_ENGINE_MANAGER.getEngineByName( "Graal.js" );
+        }
+        finally
+        {
+            Thread.currentThread().setContextClassLoader( classLoader );
+        }
+        LOG.debug( "Got engine {}", engineByName.getFactory().getEngineName() );
+        return engineByName;
     }
 }

src/main/java/com/enonic/lib/react4xp/ssr/renderer/Renderer.java

@@ -1,13 +1,11 @@
 package com.enonic.lib.react4xp.ssr.renderer;
 
 import java.util.Arrays;
-import java.util.Collection;
 import java.util.List;
 import java.util.Map;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
-import javax.script.Bindings;
 import javax.script.Invocable;
 import javax.script.ScriptEngine;
 import javax.script.ScriptException;
@@ -32,12 +30,8 @@ public class Renderer {
 
     private static final String POLYFILL_BASICS_FILE = "/lib/enonic/polyfill-react4xp/polyfillBasics.js";
 
-    private static final String POLYFILL_REACT4XP_NASHORN_FILE = "/lib/enonic/polyfill-react4xp/nashornPolyfills.js";
-
     private static final String POLYFILL_REACT4XP_NODE_FILE = "/lib/enonic/polyfill-react4xp/nodePolyfills.js";
 
-    private static final String POLYFILL_REACT4XP_USER_ADDED_FILE = "/lib/enonic/react4xp/nashornPolyfills.userAdded.js";
-
     private final long id;
 
     private final ScriptEngine engine;
@@ -46,26 +40,21 @@ public class Renderer {
 
     private final AssetLoader assetLoader;
 
-    public Renderer( final EngineFactory engineFactory, final ResourceReader resourceReader, final Config config, final long id )
+    public Renderer( final ResourceReader resourceReader, final Config config, final long id )
     {
         this.id = id;
         this.libraryName = config.LIBRARY_NAME;
 
         LOG.debug( "#{}:{} starting init...", this.id, this.libraryName );
 
-        this.engine = engineFactory.buildEngine();
+        this.engine = EngineFactory.buildEngine();
 
         this.assetLoader = new AssetLoader( resourceReader, config.SCRIPTS_HOME, id, engine );
 
         LOG.debug( "#{}:{} loading polyfills ...", this.id, this.libraryName );
 
         this.assetLoader.loadAssetIntoEngine( POLYFILL_BASICS_FILE, true );
-        if ( this.engine.getFactory().getEngineName().contains( "Nashorn" ) )
-        {
-            this.assetLoader.loadAssetIntoEngine( POLYFILL_REACT4XP_NASHORN_FILE, true );
-        }
         this.assetLoader.loadAssetIntoEngine( POLYFILL_REACT4XP_NODE_FILE, true );
-        this.assetLoader.loadAssetIntoEngine( POLYFILL_REACT4XP_USER_ADDED_FILE, false );
 
         LOG.debug( "#{}:{} loading globals...", this.id, this.libraryName );
 
@@ -114,17 +103,12 @@ public Map<String, String> render( final String entryName, final String props, f
 
             final Object propsJson = parseJson( props );
             final Object entryWithProps;
-            if ( entryObject.get( "default" ) instanceof Function )
-            {
                 // Graal.js fails to find "default" method when invokeMethod is used. Call directly
                 // Hopefully will be fixed in future versions of Graal.js
+                // entryWithProps = invocable.invokeMethod( entryObject, "default", propsJson );
+
                 final var defaultFunction = (Function<Object, Object[]>) entryObject.get( "default" );
                 entryWithProps = defaultFunction.apply( new Object[]{propsJson} );
-            }
-            else
-            {
-                entryWithProps = invocable.invokeMethod( entryObject, "default", propsJson );
-            }
 
             final String renderedHtml = (String) invocable.invokeMethod( this.engine.get( "ReactDOMServer" ), "renderToString", entryWithProps );
 
@@ -197,10 +181,6 @@ private static <T> List<T> adaptList( final Object object )
         {
             return (List<T>) object;
         }
-        else if ( object instanceof Bindings ) // Nashorn case
-        {
-            return List.copyOf( (Collection<T>) ( (Bindings) object ).values() );
-        }
         else
         {
             throw new IllegalArgumentException( "object is not a list" );

src/main/java/com/enonic/lib/react4xp/ssr/renderer/RendererFactory.java

@@ -7,30 +7,26 @@
 import org.apache.commons.pool2.impl.DefaultPooledObject;
 
 import com.enonic.lib.react4xp.ssr.Config;
-import com.enonic.lib.react4xp.ssr.engine.EngineFactory;
 import com.enonic.lib.react4xp.ssr.resources.ResourceReader;
 
 public class RendererFactory extends BasePooledObjectFactory<Renderer>
 {
-    private final EngineFactory engineFactory;
-
     private final ResourceReader resourceReader;
 
     private final Config config;
 
     private final AtomicLong id = new AtomicLong(0);
 
-    public RendererFactory( EngineFactory engineFactory, ResourceReader resourceReader, Config config )
+    public RendererFactory( ResourceReader resourceReader, Config config )
     {
-        this.engineFactory = engineFactory;
         this.resourceReader = resourceReader;
         this.config = config;
     }
 
     @Override
     public Renderer create()
     {
-        return new Renderer( engineFactory, resourceReader, config, id.incrementAndGet() );
+        return new Renderer( resourceReader, config, id.incrementAndGet() );
     }
 
     @Override