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   1 /**
   2  * Copyright (c) 2010-2024 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.automation.groovyscripting.internal;
  14
  15 import java.io.File;
  16 import java.util.List;
  17 import java.util.stream.Collectors;
  18 import java.util.stream.Stream;
  19
  20 import javax.script.ScriptEngine;
  21
  22 import org.eclipse.jdt.annotation.NonNullByDefault;
  23 import org.eclipse.jdt.annotation.Nullable;
  24 import org.openhab.core.OpenHAB;
  25 import org.openhab.core.automation.module.script.AbstractScriptEngineFactory;
  26 import org.openhab.core.automation.module.script.ScriptEngineFactory;
  27 import org.osgi.service.component.annotations.Component;
  28
  29 import groovy.lang.GroovyClassLoader;
  30
  31 /**
  32  * This is an implementation of a {@link ScriptEngineFactory} for Groovy.
  33  *
  34  * @author Wouter Born - Initial contribution
  35  */
  36 @Component(service = ScriptEngineFactory.class)
  37 @NonNullByDefault
  38 public class GroovyScriptEngineFactory extends AbstractScriptEngineFactory {
  39
  40     private static final String FILE_DIRECTORY = "automation" + File.separator + "groovy";
  41     private final org.codehaus.groovy.jsr223.GroovyScriptEngineFactory factory = new org.codehaus.groovy.jsr223.GroovyScriptEngineFactory();
  42
  43     private final List<String> scriptTypes = (List<String>) Stream.of(factory.getExtensions(), factory.getMimeTypes())
  44             .flatMap(List::stream) //
  45             .collect(Collectors.toUnmodifiableList());
  46
  47     private final GroovyClassLoader gcl = new GroovyClassLoader(GroovyScriptEngineFactory.class.getClassLoader());
  48
  49     public GroovyScriptEngineFactory() {
  50         String scriptDir = OpenHAB.getConfigFolder() + File.separator + FILE_DIRECTORY;
  51         logger.debug("Adding script directory {} to the GroovyScriptEngine class path.", scriptDir);
  52         gcl.addClasspath(scriptDir);
  53     }
  54
  55     @Override
  56     public List<String> getScriptTypes() {
  57         return scriptTypes;
  58     }
  59
  60     @Override
  61     public @Nullable ScriptEngine createScriptEngine(String scriptType) {
  62         if (scriptTypes.contains(scriptType)) {
  63             return new org.codehaus.groovy.jsr223.GroovyScriptEngineImpl(gcl);
  64         }
  65         return null;
  66     }
  67 }