com.mycompany.script.engine.js.nashorn.JsNashornScriptExecutor.java Source code

Introduction

Here is the source code for com.mycompany.script.engine.js.nashorn.JsNashornScriptExecutor.java

Source

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package com.mycompany.script.engine.js.nashorn;

import com.mycompany.script.engine.ScriptExecutor;
import com.mycompany.script.engine.ScriptResult;
import java.io.File;
import java.io.IOException;
import java.io.Reader;
import java.nio.file.Files;
import java.util.Map;
import javax.script.Bindings;
import javax.script.ScriptContext;
import javax.script.ScriptEngine;
import javax.script.ScriptException;
import javax.script.SimpleScriptContext;
import jdk.nashorn.api.scripting.NashornScriptEngineFactory;
import org.slf4j.Logger;

/**
 *
 * @author user
 */
public class JsNashornScriptExecutor implements ScriptExecutor {
    /**
     * ? ?.
     * 
     * @param scriptPath   ?  ?
     * @param basePath  
     * @param logger 
     * @param binding 
     * @return 
     */
    @Override
    public ScriptResult execScript(String scriptPath, String basePath, Logger logger, Map<String, Object> binding) {
        ScriptResult result = new ScriptResult();
        NashornScriptEngineFactory factory = new NashornScriptEngineFactory();
        ScriptEngine engine = factory.getScriptEngine();
        try {
            ScriptContext newContext = new SimpleScriptContext();
            newContext.setBindings(engine.createBindings(), ScriptContext.ENGINE_SCOPE);
            Bindings engineScope = newContext.getBindings(ScriptContext.ENGINE_SCOPE);
            engineScope.putAll(binding);
            engineScope.put("logger", logger);
            engineScope.put("currentDir", new File("").getAbsolutePath());
            result.setStart(System.currentTimeMillis());
            try (Reader reader = Files.newBufferedReader(new File(basePath, scriptPath).toPath())) {
                Object value = engine.eval(reader, engineScope);
                result.setResult(value);
            }
        } catch (IOException | ScriptException | RuntimeException ex) {
            logger.error("", ex);
            result.setException(ex);
        } finally {
            result.setFinish(System.currentTimeMillis());
        }
        return result;
    }
}