On 3 October 2015 at 21:29, <[email protected]> wrote:
> Author: pmouawad
> Date: Sat Oct 3 20:29:27 2015
> New Revision: 1706624
>
> URL: http://svn.apache.org/viewvc?rev=1706624&view=rev
> Log:
> Bug 58477 - __javaScript function : Allow use of Nashorn engine for Java8 and
> upper versions
> Bugzilla Id: 58477
>
> Modified:
> jmeter/trunk/src/functions/org/apache/jmeter/functions/JavaScript.java
> jmeter/trunk/xdocs/changes.xml
>
> Modified:
> jmeter/trunk/src/functions/org/apache/jmeter/functions/JavaScript.java
> URL:
> http://svn.apache.org/viewvc/jmeter/trunk/src/functions/org/apache/jmeter/functions/JavaScript.java?rev=1706624&r1=1706623&r2=1706624&view=diff
> ==============================================================================
> --- jmeter/trunk/src/functions/org/apache/jmeter/functions/JavaScript.java
> (original)
> +++ jmeter/trunk/src/functions/org/apache/jmeter/functions/JavaScript.java
> Sat Oct 3 20:29:27 2015
> @@ -22,6 +22,12 @@ import java.util.Collection;
> import java.util.LinkedList;
> import java.util.List;
>
> +import javax.script.Bindings;
> +import javax.script.ScriptContext;
> +import javax.script.ScriptEngine;
> +import javax.script.ScriptEngineManager;
> +import javax.script.SimpleScriptContext;
> +
> import org.apache.jmeter.engine.util.CompoundVariable;
> import org.apache.jmeter.samplers.SampleResult;
> import org.apache.jmeter.samplers.Sampler;
> @@ -40,7 +46,27 @@ import org.mozilla.javascript.Scriptable
> * @since 1.9
> */
> public class JavaScript extends AbstractFunction {
> + private static final String NASHORN_ENGINE_NAME = "nashorn";
> //$NON-NLS-1$
> +
> + private static final String USE_RHINO_ENGINE_PROPERTY =
> "javascript.use_rhino"; //$NON-NLS-1$
>
> + /**
> + * Initialization On Demand Holder pattern
> + */
> + private static class LazyHolder {
> + public static final ScriptEngineManager INSTANCE = new
> ScriptEngineManager();
> + }
> +
> + private static final boolean USE_RHINO_ENGINE =
> + getInstance().getEngineByName(JavaScript.NASHORN_ENGINE_NAME) ==
> null || //$NON-NLS-1$
> + JMeterUtils.getPropDefault(USE_RHINO_ENGINE_PROPERTY, true) ;
I think the property should be checked first.
As it stands, the ScriptEngineManager will always be loaded, and
Nashorn will always be instantiated on Java8+ even if the property is
true.
> +
> + /**
> + * @return ScriptEngineManager singleton
> + */
> + public static ScriptEngineManager getInstance() {
Why is this public?
> + return LazyHolder.INSTANCE;
> + }
> private static final List<String> desc = new LinkedList<>();
>
> private static final String KEY = "__javaScript"; //$NON-NLS-1$
> @@ -70,7 +96,77 @@ public class JavaScript extends Abstract
> String varName = values.length < 2 ? null : ((CompoundVariable)
> values[1]).execute().trim();
> String resultStr = "";
>
> + if(USE_RHINO_ENGINE) {
> + resultStr = executeWithRhino(previousResult, currentSampler,
> jmctx,
> + vars, script, varName);
> + } else {
> + resultStr = executeWithNashorn(previousResult, currentSampler,
> jmctx,
> + vars, script, varName);
> + }
> +
> + return resultStr;
> +
> + }
> +
> + /**
> + *
> + * @param previousResult {@link SampleResult}
> + * @param currentSampler {@link Sampler}
> + * @param jmctx {@link JMeterContext}
> + * @param vars {@link JMeterVariables}
> + * @param script Javascript code
> + * @param varName variable name
> + * @return result as String
> + * @throws InvalidVariableException
> + */
> + private String executeWithNashorn(SampleResult previousResult,
> + Sampler currentSampler, JMeterContext jmctx, JMeterVariables
> vars,
> + String script, String varName)
> + throws InvalidVariableException {
> + String resultStr = null;
> + try {
> + ScriptContext newContext = new SimpleScriptContext();
> + ScriptEngine engine =
> getInstance().getEngineByName(JavaScript.NASHORN_ENGINE_NAME);
> + Bindings bindings = engine.createBindings();
> +
> + // Set up some objects for the script to play with
> + bindings.put("log", log); //$NON-NLS-1$
> + bindings.put("ctx", jmctx); //$NON-NLS-1$
> + bindings.put("vars", vars); //$NON-NLS-1$
> + bindings.put("props", JMeterUtils.getJMeterProperties());
> //$NON-NLS-1$
> +
> + bindings.put("threadName", Thread.currentThread().getName());
> //$NON-NLS-1$
> + bindings.put("sampler", currentSampler); //$NON-NLS-1$
> + bindings.put("sampleResult", previousResult); //$NON-NLS-1$
> + newContext.setBindings(bindings, ScriptContext.ENGINE_SCOPE);
> + Object result = engine.eval(script, newContext);
> + resultStr = result.toString();
> + if (varName != null && vars != null) {// vars can be null if run
> from TestPlan
> + vars.put(varName, resultStr);
> + }
> + } catch (Exception e) {
> + log.error("Error processing Javascript: [" + script + "]\n", e);
> + throw new InvalidVariableException("Error processing Javascript:
> [" + script + "]", e);
> + }
> + return resultStr;
> + }
> +
> + /**
> + * @param previousResult {@link SampleResult}
> + * @param currentSampler {@link Sampler}
> + * @param jmctx {@link JMeterContext}
> + * @param vars {@link JMeterVariables}
> + * @param script Javascript code
> + * @param varName variable name
> + * @return result as String
> + * @throws InvalidVariableException
> + */
> + private String executeWithRhino(SampleResult previousResult,
> + Sampler currentSampler, JMeterContext jmctx, JMeterVariables
> vars,
> + String script, String varName)
> + throws InvalidVariableException {
> Context cx = Context.enter();
> + String resultStr = null;
> try {
>
> Scriptable scope = cx.initStandardObjects(null);
> @@ -91,16 +187,13 @@ public class JavaScript extends Abstract
> if (varName != null && vars != null) {// vars can be null if run
> from TestPlan
> vars.put(varName, resultStr);
> }
> -
> } catch (RhinoException e) {
> log.error("Error processing Javascript: [" + script + "]\n", e);
> throw new InvalidVariableException("Error processing Javascript:
> [" + script + "]", e);
> } finally {
> Context.exit();
> }
> -
> return resultStr;
> -
> }
>
> /** {@inheritDoc} */
>
> Modified: jmeter/trunk/xdocs/changes.xml
> URL:
> http://svn.apache.org/viewvc/jmeter/trunk/xdocs/changes.xml?rev=1706624&r1=1706623&r2=1706624&view=diff
> ==============================================================================
> --- jmeter/trunk/xdocs/changes.xml (original)
> +++ jmeter/trunk/xdocs/changes.xml Sat Oct 3 20:29:27 2015
> @@ -113,6 +113,7 @@ Summary
>
> <h3>Functions</h3>
> <ul>
> + <li><bug>58477</bug> __javaScript function : Allow use of Nashorn engine
> for Java8 and upper versions</li>
> </ul>
>
> <h3>I18N</h3>
>
>
