[jsscripting] Unable to import classes from org.openhab.core

[ssalonen]

After installing jsscripting addon (using workaround steps documented in #11219), I cannot seem to import classes from org.openhab.core, although other java imports seem to work (e.g. org.slf4j.LoggerFactory)

Expected Behavior

Java.type("org.openhab.core.items.Metadata") should work successfully with jsscripting bundle installed, similar how it works with the default javascript engine.

Current Behavior

Error is raised when executing script

09:38:32.712 [ERROR] [ab.automation.script.javascript.stack] - Failed to execute script:
org.graalvm.polyglot.PolyglotException: TypeError: Access to host class org.openhab.core.items.Metadata is not allowed or does not exist.
	at <js>.:anonymous(<eval>:5) ~[?:?]
	at <js>.:program(<eval>:1) ~[?:?]
	at org.graalvm.polyglot.Context.eval(Context.java:345) ~[?:?]
	at com.oracle.truffle.js.scriptengine.GraalJSScriptEngine.eval(GraalJSScriptEngine.java:379) ~[?:?]
	at com.oracle.truffle.js.scriptengine.GraalJSScriptEngine.eval(GraalJSScriptEngine.java:356) ~[?:?]
	at javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:264) ~[java.scripting:?]
	at org.openhab.automation.jsscripting.internal.scriptengine.DelegatingScriptEngineWithInvocable.eval(DelegatingScriptEngineWithInvocable.java:51) ~[?:?]
	at org.openhab.automation.jsscripting.internal.scriptengine.InvocationInterceptingScriptEngineWithInvocable.eval(InvocationInterceptingScriptEngineWithInvocable.java:69) ~[?:?]
	at org.openhab.automation.jsscripting.internal.scriptengine.DelegatingScriptEngineWithInvocable.eval(DelegatingScriptEngineWithInvocable.java:51) ~[?:?]
	at org.openhab.automation.jsscripting.internal.scriptengine.InvocationInterceptingScriptEngineWithInvocable.eval(InvocationInterceptingScriptEngineWithInvocable.java:69) ~[?:?]
	at org.openhab.core.automation.module.script.internal.handler.ScriptActionHandler.lambda$0(ScriptActionHandler.java:62) ~[?:?]
	at java.util.Optional.ifPresent(Optional.java:183) ~[?:?]
	at org.openhab.core.automation.module.script.internal.handler.ScriptActionHandler.execute(ScriptActionHandler.java:59) ~[?:?]
	at org.openhab.core.automation.internal.RuleEngineImpl.executeActions(RuleEngineImpl.java:1183) ~[?:?]
	at org.openhab.core.automation.internal.RuleEngineImpl.runNow(RuleEngineImpl.java:1035) ~[?:?]

Steps to Reproduce (for Bugs)

1. Follow steps in [jsscripting] jsscripting automation bundle installation issues #11219 to install the addon. After addon installation and openHAB restart, use the following script to get the error:

(function (context) {
  var log = Java.type('org.slf4j.LoggerFactory').getLogger('org.openhab.rule.' + context.ruleUID)
  
  log.info( Java.type("org.openhab.core.items.Metadata") )
})(this);

Context

Trying to migrate to ES6 in rules/scripts. This is blocking such transition as, combined with #11221, openHAB functionality is completely unavailable from rules/script with jsscripting addon installed.

Your Environment

I can reproduce with 3.1.0 release and 3.2.0 M2.

Linux  5.13.13-200.fc34.x86_64 #1 SMP Thu Aug 26 17:06:39 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

[openhab-bot]

This issue has been mentioned on openHAB Community. There might be relevant details there:

https://community.openhab.org/t/all-my-ecmascript-scripts-stopped-working-throwing-exceptions/125341/10

[openhab-bot]

This issue has been mentioned on openHAB Community. There might be relevant details there:

https://community.openhab.org/t/usage-of-new-ecma2021-automation-scripting-graalvm/122724/24

[LukasA83]

I'm having the same issue. The workaround identifed is no longer working:
jpg0/oh-config#2 (comment)

I'm unable to get services via the bundlecontext.

Any ideas @jpg0 ?

[ssalonen]

@LukasA83 please note that this particular issue I have reported is separate from ohj & ohj-support .

Here we are talking issues experienced just with the jsscripting addon and the nonworking import with openhab packages/classes.

Are the issues you refer to related to these 3rd party plugins (ohj, ohj-support)? If so, it might be better to file the issue to their respective issue handlers?

However, I would be curious to learn if the OSGI service lookup of openHAB services also becomes non-working when jsscripting addon is installed.

[jpg0]

It's interesting that the import of the first (sl4j) class succeeds, yet it fails to import the openHAB class.

Currently the bundle is marked as DynamicImport-Package: * so it should dynamically look up the class fine.

[LukasA83]

ok, I believe I found another workaround. Still strange, that the scriptExtension is not available. Any hint?

[openhab-bot]

This issue has been mentioned on openHAB Community. There might be relevant details there:

https://community.openhab.org/t/usage-of-new-ecma2021-automation-scripting-graalvm/122724/25