Lucee's createDynamicProxy() requiring "Webservice Engine"

dswitzer · May 2, 2025, 9:27pm

I’ve had a weird issue when testing Lucee 6.2.1.122 with functionality that uses the createDynamicProxy() function. I cannot recreate the problem consistently. Sometimes after a fresh install of Lucee 6 (no installer, using the release JAR w/Tomcat 11), trying to use the createDynamicProxy() I will see the following exception:

lucee.runtime.net.rpc.RPCException: No Webservice Engine is installed! Check out the Extension Store in the Lucee Administrator for "Webservices".
	at lucee.runtime.net.rpc.DummyWSHandler.notInstalled(DummyWSHandler.java:48)
	at lucee.runtime.net.rpc.DummyWSHandler.notInstalledEL(DummyWSHandler.java:52)
	at lucee.runtime.net.rpc.DummyWSHandler.toWSTypeClass(DummyWSHandler.java:34)
	at lucee.transformer.bytecode.util.ASMUtil.toType(ASMUtil.java:704)
	at lucee.transformer.bytecode.util.ASMUtil.createPojo(ASMUtil.java:597)
	at lucee.runtime.type.util.ComponentUtil._getComponentPropertiesClass(ComponentUtil.java:483)
	at lucee.runtime.type.util.ComponentUtil.getComponentPropertiesClass(ComponentUtil.java:440)
	at lucee.runtime.op.Caster.otherTypeToClass(Caster.java:3811)
	at lucee.runtime.op.Caster.cfTypeToClass(Caster.java:3796)
	at lucee.transformer.bytecode.util.SimpleMethodUDF.getReturnType(SimpleMethodUDF.java:44)
	at lucee.transformer.bytecode.util.JavaProxyFactory._createMethod(JavaProxyFactory.java:591)
	at lucee.transformer.bytecode.util.JavaProxyFactory.createProxyFromComponentInterface(JavaProxyFactory.java:512)
	at lucee.transformer.bytecode.util.JavaProxyFactory.createProxy(JavaProxyFactory.java:420)
	at lucee.runtime.functions.other.CreateDynamicProxy._call(CreateDynamicProxy.java:118)
	at lucee.runtime.functions.other.CreateDynamicProxy._call(CreateDynamicProxy.java:106)
	at lucee.runtime.functions.other.CreateDynamicProxy.call(CreateDynamicProxy.java:60)
	at shared.templating.liquid.liqp.liquidcontext_cfc$cf.udfCall(/LiquidContext.cfc:105)

If I install the Axis Webservice extension, the error goes away. I can then delete the extension, restart Tomcat and it will continue to work.

Also, sometimes after a fresh install (folders, wiped, complete re-download and setup), the error never happens. Seems fairly random. I haven’t dug into the code on why it thinks it needs the Webservice extension. I can’t see why it would need it.

Any ideas on why this is happening? Even though I can’t reliable recreate the bug, should I file a bug report?

OS: Oracle 9
Java Version: Java 21
Tomcat Version: Tomcat 11
Lucee Version: 6.2.1.122

Terry_Whitney · May 3, 2025, 11:11pm

dswitzer:

’ve had a weird issue when testing Lucee 6.2.1.122 with functionality that uses the createDynamicProxy() function. I cannot recreate the problem consistently. Sometimes after a fresh install of Lucee 6 (no installer, using the release JAR w/Tomcat 11), trying to use the createDynamicProxy() I will see the following exception:
lucee.runtime.net.rpc.RPCException: No Webservice Engine is installed! Check out the Extension Store in the Lucee Administrator for "Webservices".
	at lucee.runtime.net.rpc.DummyWSHandler.notInstalled(DummyWSHandler.java:48)
	at lucee.runtime.net.rpc.DummyWSHandler.notInstalledEL(DummyWSHandler.java:52)
	at lucee.runtime.net.rpc.DummyWSHandler.toWSTypeClass(DummyWSHandler.java:34)
	at lucee.transformer.bytecode.util.ASMUtil.toType(ASMUtil.java:704)
	at lucee.transformer.bytecode.util.ASMUtil.createPojo(ASMUtil.java:597)
	at lucee.runtime.type.util.ComponentUtil._getComponentP

The Axis extension is the web services module for Lucee.

dswitzer · May 5, 2025, 9:45pm

@Terry_Whitney,

Thanks. I’m aware of the plugin, but just pointing out it should be needed to use createDynamicProxy().

Zackster · May 6, 2025, 9:07am

nah, it shouldn’t. hard to repo huh?

github.com

lucee/Lucee/blob/6.2/core/src/main/java/lucee/transformer/bytecode/util/ASMUtil.java#L597


      
          			ExceptionUtil.rethrowIfNecessary(t);
          			md5 = "";
          		}
          
          		FieldVisitor fv = cw.visitField(Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL + Opcodes.ACC_STATIC, "_md5_", "Ljava/lang/String;", null, md5);
          		fv.visitEnd();
          
          		// Constructor
          		GeneratorAdapter adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC, CONSTRUCTOR_OBJECT, null, null, cw);
          		adapter.loadThis();
          		adapter.invokeConstructor(toType(parent, true), CONSTRUCTOR_OBJECT);
          		adapter.returnValue();
          		adapter.endMethod();
          
          		// properties
          		for (int i = 0; i < properties.length; i++) {
          			createProperty(cw, className, properties[i]);
          		}
          
          		// complexType src
          		if (!StringUtil.isEmpty(srcName)) {

reckon this is the problem, please file a bug

dswitzer · May 6, 2025, 2:02pm

I’ve created a bug:

https://luceeserver.atlassian.net/browse/LDEV-5578

I’m working on trying to put together a simple test case.