[jsscriptingnashorn] JavaScript Scripting Nashorn Automation (openhab…

…#14013)

* [jsscriptingnashorn] JavaScript Scripting Nashorn Automation

This add-on allows you to use your older JavaScript (ECMAScript 5.1) rules on newer Java versions until they are migrated to JavaScript (ECMAScript 2021+).
The add-on uses a standalone [Nashorn Engine](https://github.com/openjdk/nashorn) which was part of Java until it was removed in Java 15.

* Update parent to 3.4.0-SNAPSHOT and nashorn-core to 15.4

For the Nashorn changelog, see:

https://github.com/openjdk/nashorn/blob/main/CHANGELOG.md

* Update parent to 4.0.0-SNAPSHOT
* Remove removeUnsupportedNashornArgs
* Update scriptTypes
* Add CODEOWNERS entry
* Recycle ScriptScopeOSGiTest.java

It got removed in openhab/openhab-core#2994

* Remove redundant new line from pom.xml

Signed-off-by: Wouter Born <github@maindrain.net>

CODEOWNERS

@@ -8,6 +8,7 @@
 /bundles/org.openhab.automation.groovyscripting/ @wborn
 /bundles/org.openhab.automation.jrubyscripting/ @boc-tothefuture @ccutrer @jimtng
 /bundles/org.openhab.automation.jsscripting/ @jpg0 @florian-h05
+/bundles/org.openhab.automation.jsscriptingnashorn/ @wborn
 /bundles/org.openhab.automation.jythonscripting/ @openhab/add-ons-maintainers
 /bundles/org.openhab.automation.pidcontroller/ @fwolter
 /bundles/org.openhab.automation.pwm/ @fwolter
@@ -414,6 +415,7 @@
 /bundles/org.openhab.voice.voicerss/ @JochenHiller @lolodomo
 /bundles/org.openhab.voice.voskstt/ @GiviMAD
 /bundles/org.openhab.voice.watsonstt/ @GiviMAD
+/itests/org.openhab.automation.jsscriptingnashorn.tests/ @wborn
 /itests/org.openhab.binding.astro.tests/ @gerrieg
 /itests/org.openhab.binding.avmfritz.tests/ @cweitkamp
 /itests/org.openhab.binding.feed.tests/ @svilenvul

bom/openhab-addons/pom.xml

@@ -31,6 +31,11 @@
       <artifactId>org.openhab.automation.jsscripting</artifactId>
       <version>${project.version}</version>
     </dependency>
+    <dependency>
+      <groupId>org.openhab.addons.bundles</groupId>
+      <artifactId>org.openhab.automation.jsscriptingnashorn</artifactId>
+      <version>${project.version}</version>
+    </dependency>
     <dependency>
       <groupId>org.openhab.addons.bundles</groupId>
       <artifactId>org.openhab.automation.jythonscripting</artifactId>

bundles/org.openhab.automation.jsscriptingnashorn/NOTICE

@@ -0,0 +1,13 @@
+This content is produced and maintained by the openHAB project.
+
+* Project home: https://www.openhab.org
+
+== Declared Project Licenses
+
+This program and the accompanying materials are made available under the terms
+of the Eclipse Public License 2.0 which is available at
+https://www.eclipse.org/legal/epl-2.0/.
+
+== Source Code
+
+https://github.com/openhab/openhab-addons

bundles/org.openhab.automation.jsscriptingnashorn/README.md

@@ -0,0 +1,49 @@
+# JavaScript Scripting (Nashorn)
+
+This add-on allows you to use your older ECMAScript 5.1 code on newer Java versions until the code is migrated to ECMAScript 2021+.
+It should only be installed for providing backwards compatibility.
+When writing new code it is preferred to do this using ECMAScript 2021+ for which support is provided by installing the [JavaScript Scripting](https://www.openhab.org/addons/automation/jsscripting/) add-on.
+
+This add-on uses a standalone [Nashorn Engine](https://github.com/openjdk/nashorn) to run ECMAScript 5.1 code.
+The Nashorn Engine was pre-installed in openHAB 2 and openHAB 3 because it was part of Java.
+Since Java 15 the Nashorn Engine has been removed from Java.
+
+## Creating JavaScript Scripts
+
+When this add-on is installed, JavaScript script actions will be run by this add-on and allow ECMAScript 5.1 features.
+
+Alternatively, you can create scripts in the `automation/jsr223` configuration directory.
+If you create an empty file called `test.nashornjs`, you will see a log line with information similar to:
+
+```text
+    ... [INFO ] [.a.m.s.r.i.l.ScriptFileWatcher:150  ] - Loading script 'test.nashornjs'
+```
+
+To enable debug logging, use the [console logging]({{base}}/administration/logging.html) commands to enable debug logging for the automation functionality:
+
+```text
+log:set DEBUG org.openhab.core.automation
+```
+
+For more information on the available APIs in scripts see the [JSR223 Scripting]({{base}}/configuration/jsr223.html) documentation.
+
+## Script Examples
+
+JavaScript scripts provide access to almost all the functionality in an openHAB runtime environment.
+As a simple example, the following script logs "Hello, World!".
+Note that `console.log` will usually not work since the output has no terminal to display the text.
+The openHAB server uses the [SLF4J](https://www.slf4j.org/) library for logging.
+
+```js
+var LoggerFactory = Java.type('org.slf4j.LoggerFactory');
+
+LoggerFactory.getLogger("org.openhab.core.automation.examples").info("Hello, World!");
+```
+
+Depending on the openHAB logging configuration, you may need to prefix logger names with `org.openhab.core.automation` for them to show up in the log file (or you modify the logging configuration).
+
+The script uses the [LoggerFactory](https://www.slf4j.org/apidocs/org/slf4j/Logger.html) to obtain a named logger and then logs a message like:
+
+```text
+    ... [INFO ] [org.openhab.core.automation.examples ] - Hello, World!
+```

bundles/org.openhab.automation.jsscriptingnashorn/pom.xml

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<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.openhab.addons.bundles</groupId>
+    <artifactId>org.openhab.addons.reactor.bundles</artifactId>
+    <version>4.0.0-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>org.openhab.automation.jsscriptingnashorn</artifactId>
+
+  <name>openHAB Add-ons :: Bundles :: Automation :: JavaScript Scripting (Nashorn)</name>
+
+  <properties>
+    <bnd.importpackage>jdk.dynalink.*;resolution:=optional</bnd.importpackage>
+    <asm.version>7.3.1</asm.version>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.openjdk.nashorn</groupId>
+      <artifactId>nashorn-core</artifactId>
+      <version>15.4</version>
+      <scope>compile</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.ow2.asm</groupId>
+      <artifactId>asm</artifactId>
+      <version>${asm.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.ow2.asm</groupId>
+      <artifactId>asm-analysis</artifactId>
+      <version>${asm.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.ow2.asm</groupId>
+      <artifactId>asm-commons</artifactId>
+      <version>${asm.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.ow2.asm</groupId>
+      <artifactId>asm-tree</artifactId>
+      <version>${asm.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.ow2.asm</groupId>
+      <artifactId>asm-util</artifactId>
+      <version>${asm.version}</version>
+    </dependency>
+  </dependencies>
+
+</project>

bundles/org.openhab.automation.jsscriptingnashorn/src/main/feature/feature.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<features name="org.openhab.automation.jsscriptingnashorn-${project.version}" xmlns="http://karaf.apache.org/xmlns/features/v1.4.0">
+	<repository>mvn:org.openhab.core.features.karaf/org.openhab.core.features.karaf.openhab-core/${ohc.version}/xml/features</repository>
+
+	<feature name="openhab-automation-jsscriptingnashorn" description="JavaScript Scripting (Nashorn)" version="${project.version}">
+		<feature>openhab-runtime-base</feature>
+		<bundle start-level="80">mvn:org.openhab.addons.bundles/org.openhab.automation.jsscriptingnashorn/${project.version}</bundle>
+	</feature>
+</features>

bundles/org.openhab.automation.jsscriptingnashorn/src/main/java/org/openhab/automation/jsscriptingnashorn/internal/NashornScriptEngineFactory.java

@@ -0,0 +1,84 @@
+/**
+ * Copyright (c) 2010-2022 Contributors to the openHAB project
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package org.openhab.automation.jsscriptingnashorn.internal;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import javax.script.ScriptEngine;
+import javax.script.ScriptException;
+
+import org.eclipse.jdt.annotation.NonNullByDefault;
+import org.eclipse.jdt.annotation.Nullable;
+import org.openhab.core.automation.module.script.AbstractScriptEngineFactory;
+import org.openhab.core.automation.module.script.ScriptEngineFactory;
+import org.osgi.service.component.annotations.Component;
+
+/**
+ * This is an implementation of a {@link ScriptEngineFactory} for Nashorn.
+ *
+ * @author Wouter Born - Initial contribution
+ */
+@Component(service = ScriptEngineFactory.class)
+@NonNullByDefault
+public class NashornScriptEngineFactory extends AbstractScriptEngineFactory {
+
+    private final org.openjdk.nashorn.api.scripting.NashornScriptEngineFactory factory = new org.openjdk.nashorn.api.scripting.NashornScriptEngineFactory();
+
+    private final List<String> scriptTypes = createScriptTypes();
+
+    private List<String> createScriptTypes() {
+        List<String> extensions = List.of("nashornjs");
+
+        String mimeTypeVersion = ";version=ECMAScript-5.1";
+        List<String> mimeTypes = factory.getMimeTypes().stream().map(mimeType -> mimeType + mimeTypeVersion)
+                .collect(Collectors.toUnmodifiableList());
+
+        return Stream.of(extensions, mimeTypes).flatMap(List::stream).collect(Collectors.toUnmodifiableList());
+    }
+
+    @Override
+    public List<String> getScriptTypes() {
+        return scriptTypes;
+    }
+
+    @Override
+    public void scopeValues(ScriptEngine scriptEngine, Map<String, Object> scopeValues) {
+        Set<String> expressions = new HashSet<>();
+
+        for (Entry<String, Object> entry : scopeValues.entrySet()) {
+            scriptEngine.put(entry.getKey(), entry.getValue());
+            if (entry.getValue() instanceof Class) {
+                expressions.add(String.format("%s = %<s.static;", entry.getKey()));
+            }
+        }
+        String scriptToEval = String.join("\n", expressions);
+        try {
+            scriptEngine.eval(scriptToEval);
+        } catch (ScriptException ex) {
+            logger.error("ScriptException while importing scope: {}", ex.getMessage());
+        }
+    }
+
+    @Override
+    public @Nullable ScriptEngine createScriptEngine(String scriptType) {
+        return scriptTypes.contains(scriptType)
+                ? factory.getScriptEngine(NashornScriptEngineFactory.class.getClassLoader())
+                : null;
+    }
+}

bundles/org.openhab.automation.jsscriptingnashorn/src/main/java/org/openhab/automation/jsscriptingnashorn/internal/package-info.java

@@ -0,0 +1,20 @@
+/**
+ * Copyright (c) 2010-2022 Contributors to the openHAB project
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+@org.osgi.annotation.bundle.Header(name = org.osgi.framework.Constants.DYNAMICIMPORT_PACKAGE, value = "*")
+package org.openhab.automation.jsscriptingnashorn.internal;
+
+/**
+ * Additional information for the JavaScript Scripting Nashorn package
+ *
+ * @author Wouter Born - Initial contribution
+ */

bundles/org.openhab.automation.jsscriptingnashorn/src/test/java/org/openhab/automation/jsscriptingnashorn/NashornScriptEngineFactoryTest.java

@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) 2010-2022 Contributors to the openHAB project
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package org.openhab.automation.jsscriptingnashorn;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.contains;
+
+import java.util.List;
+
+import org.eclipse.jdt.annotation.NonNullByDefault;
+import org.junit.jupiter.api.Test;
+import org.openhab.automation.jsscriptingnashorn.internal.NashornScriptEngineFactory;
+
+/**
+ * Tests {@link NashornScriptEngineFactory}.
+ *
+ * @author Wouter Born - Initial contribution
+ */
+@NonNullByDefault
+public class NashornScriptEngineFactoryTest {
+
+    @Test
+    public void scriptTypesAreNashornSpecific() {
+        List<String> scriptTypes = new NashornScriptEngineFactory().getScriptTypes();
+
+        assertThat(scriptTypes,
+                contains("nashornjs", "application/javascript;version=ECMAScript-5.1",
+                        "application/ecmascript;version=ECMAScript-5.1", "text/javascript;version=ECMAScript-5.1",
+                        "text/ecmascript;version=ECMAScript-5.1"));
+        assertThat(scriptTypes.size(), is(5));
+    }
+}

bundles/pom.xml

@@ -21,6 +21,7 @@
     <module>org.openhab.automation.groovyscripting</module>
     <module>org.openhab.automation.jrubyscripting</module>
     <module>org.openhab.automation.jsscripting</module>
+    <module>org.openhab.automation.jsscriptingnashorn</module>
     <module>org.openhab.automation.jythonscripting</module>
     <module>org.openhab.automation.pidcontroller</module>
     <module>org.openhab.automation.pwm</module>

itests/org.openhab.automation.jsscriptingnashorn.tests/NOTICE

@@ -0,0 +1,13 @@
+This content is produced and maintained by the openHAB project.
+
+* Project home: https://www.openhab.org
+
+== Declared Project Licenses
+
+This program and the accompanying materials are made available under the terms
+of the Eclipse Public License 2.0 which is available at
+https://www.eclipse.org/legal/epl-2.0/.
+
+== Source Code
+
+https://github.com/openhab/openhab-addons