List of usage examples for javax.script ScriptContext ENGINE_SCOPE
int ENGINE_SCOPE
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ScriptEngine and a set of attributes is maintained for each engine. From source file:io.github.jeddict.jcode.util.FileUtil.java
/** * In-memory template api/*from w w w. ja v a 2s . c o m*/ * * @param templateContent * @param values * @return */ public static String expandTemplateContent(String templateContent, Map<String, Object> values) { StringWriter writer = new StringWriter(); ScriptEngine eng = getScriptEngine(); Bindings bind = eng.getContext().getBindings(ScriptContext.ENGINE_SCOPE); if (values != null) { bind.putAll(values); } bind.put(ENCODING_PROPERTY_NAME, Charset.defaultCharset().name()); eng.getContext().setWriter(writer); Reader is = new StringReader(templateContent); try { eng.eval(is); } catch (ScriptException ex) { Exceptions.printStackTrace(ex); } return writer.toString(); }
From source file:com.galeoconsulting.leonardinius.rest.service.ScriptRunner.java
private ConsoleOutputBean eval(ScriptEngine engine, String evalScript, Map<String, ?> bindings, final ConsoleOutputBean consoleOutputBean) throws ScriptException { updateBindings(engine, ScriptContext.ENGINE_SCOPE, new HashMap<String, Object>() { {//from ww w .j ava 2s. c o m put("out", new PrintWriter(consoleOutputBean.getOut(), true)); put("err", new PrintWriter(consoleOutputBean.getErr(), true)); } }); if (bindings != null && !bindings.isEmpty()) { updateBindings(engine, ScriptContext.ENGINE_SCOPE, bindings); } engine.getContext().setWriter(consoleOutputBean.getOut()); engine.getContext().setErrorWriter(consoleOutputBean.getErr()); engine.getContext().setReader(new NullReader(0)); consoleOutputBean.setEvalResult(engine.eval(evalScript, engine.getContext())); return consoleOutputBean; }
From source file:org.apache.nifi.processors.script.ExecuteScript.java
/** * Evaluates the given script body (or file) using the current session, context, and flowfile. The script * evaluation expects a FlowFile to be returned, in which case it will route the FlowFile to success. If a script * error occurs, the original FlowFile will be routed to failure. If the script succeeds but does not return a * FlowFile, the original FlowFile will be routed to no-flowfile * * @param context the current process context * @param sessionFactory provides access to a {@link ProcessSessionFactory}, which * can be used for accessing FlowFiles, etc. * @throws ProcessException if the scripted processor's onTrigger() method throws an exception */// w ww .java 2 s.c om @Override public void onTrigger(ProcessContext context, ProcessSessionFactory sessionFactory) throws ProcessException { synchronized (scriptingComponentHelper.isInitialized) { if (!scriptingComponentHelper.isInitialized.get()) { scriptingComponentHelper.createResources(); } } ScriptEngine scriptEngine = scriptingComponentHelper.engineQ.poll(); ComponentLog log = getLogger(); if (scriptEngine == null) { // No engine available so nothing more to do here return; } ProcessSession session = sessionFactory.createSession(); try { try { Bindings bindings = scriptEngine.getBindings(ScriptContext.ENGINE_SCOPE); if (bindings == null) { bindings = new SimpleBindings(); } bindings.put("session", session); bindings.put("context", context); bindings.put("log", log); bindings.put("REL_SUCCESS", REL_SUCCESS); bindings.put("REL_FAILURE", REL_FAILURE); // Find the user-added properties and set them on the script for (Map.Entry<PropertyDescriptor, String> property : context.getProperties().entrySet()) { if (property.getKey().isDynamic()) { // Add the dynamic property bound to its full PropertyValue to the script engine if (property.getValue() != null) { bindings.put(property.getKey().getName(), context.getProperty(property.getKey())); } } } scriptEngine.setBindings(bindings, ScriptContext.ENGINE_SCOPE); // Execute any engine-specific configuration before the script is evaluated ScriptEngineConfigurator configurator = scriptingComponentHelper.scriptEngineConfiguratorMap .get(scriptingComponentHelper.getScriptEngineName().toLowerCase()); // Evaluate the script with the configurator (if it exists) or the engine if (configurator != null) { configurator.eval(scriptEngine, scriptToRun, scriptingComponentHelper.getModules()); } else { scriptEngine.eval(scriptToRun); } // Commit this session for the user. This plus the outermost catch statement mimics the behavior // of AbstractProcessor. This class doesn't extend AbstractProcessor in order to share a base // class with InvokeScriptedProcessor session.commit(); } catch (ScriptException e) { throw new ProcessException(e); } } catch (final Throwable t) { // Mimic AbstractProcessor behavior here getLogger().error("{} failed to process due to {}; rolling back session", new Object[] { this, t }); session.rollback(true); throw t; } finally { scriptingComponentHelper.engineQ.offer(scriptEngine); } }
From source file:nl.geodienstencentrum.maven.plugin.sass.AbstractSassMojo.java
/** * Execute the Sass Compilation Ruby Script. * * @param sassScript/* w ww . j a v a 2 s . co m*/ * the sass script * @throws MojoExecutionException * the mojo execution exception * @throws MojoFailureException * the mojo failure exception */ protected void executeSassScript(final String sassScript) throws MojoExecutionException, MojoFailureException { if (this.skip) { return; } final Log log = this.getLog(); System.setProperty("org.jruby.embed.localcontext.scope", "threadsafe"); log.debug("Execute Sass Ruby script:\n\n" + sassScript + "\n\n"); final ScriptEngineManager scriptEngineManager = new ScriptEngineManager(); final ScriptEngine jruby = scriptEngineManager.getEngineByName("jruby"); try { final CompilerCallback compilerCallback = new CompilerCallback(log); jruby.getBindings(ScriptContext.ENGINE_SCOPE).put("compiler_callback", compilerCallback); jruby.eval(sassScript); if (this.failOnError && compilerCallback.hadError()) { throw new MojoFailureException("Sass compilation encountered errors (see above for details)."); } } catch (final ScriptException e) { throw new MojoExecutionException("Failed to execute Sass ruby script:\n" + sassScript, e); } log.debug("\n"); }
From source file:org.apache.nifi.scripting.ScriptFactory.java
private void updateEngine() throws IOException, ScriptException { final String extension = getExtension(scriptFileName); // if engine is thread safe, it's being reused...if it's a JrubyEngine it File scriptFile = new File(this.scriptFileName); ScriptEngine scriptEngine = engineFactory.getNewEngine(scriptFile, extension); scriptText = getScriptText(scriptFile, extension); Map<String, Object> localThreadVariables = new HashMap<>(); String loggerVariableKey = getVariableName("GLOBAL", "logger", extension); localThreadVariables.put(loggerVariableKey, logger); String propertiesVariableKey = getVariableName("INSTANCE", "properties", extension); localThreadVariables.put(propertiesVariableKey, new HashMap<String, String>()); localThreadVariables.put(ScriptEngine.FILENAME, scriptFileName); if (scriptEngine instanceof Compilable) { Bindings bindings = new SimpleBindings(localThreadVariables); scriptEngine.setBindings(bindings, ScriptContext.ENGINE_SCOPE); compiledScript = ((Compilable) scriptEngine).compile(scriptText); }// w w w . j av a 2s . c om logger.debug("Updating Engine!!"); }
From source file:org.ow2.parserve.PARServeEngine.java
@Override public Object eval(String script, ScriptContext ctx) throws ScriptException { // Transfer all bindings from context into the rengine env if (ctx == null) { throw new ScriptException("No script context specified"); }/*from ww w . ja v a 2s . c om*/ Bindings bindings = ctx.getBindings(ScriptContext.ENGINE_SCOPE); if (bindings == null) { throw new ScriptException("No bindings specified in the script context"); } serverEval = false; Map<String, Serializable> jobVariables = (Map<String, Serializable>) bindings .get(SchedulerConstants.VARIABLES_BINDING_NAME); if (jobVariables != null) { serverEval = "true".equals(jobVariables.get(PARSERVE_SERVEREVAL)); } Map<String, String> resultMetadata = (Map<String, String>) bindings .get(SchedulerConstants.RESULT_METADATA_VARIABLE); engine = new PARServeConnection(Rsession.newInstanceTry("Script", rServeConf), serverEval); try { initializeTailer(bindings, ctx); Object resultValue = null; if (!serverEval) { prepareExecution(ctx, bindings); } // if there is an exception during the parsing, a ScriptException is immediately thrown engine.checkParsing(script, ctx); // otherwise each step is followed till the end REXP rexp = engine.engineEval(script, ctx); resultValue = retrieveResultVariable(ctx, bindings, rexp); retrieveOtherVariable(SelectionScript.RESULT_VARIABLE, ctx, bindings); retrieveOtherVariable(FlowScript.loopVariable, ctx, bindings); retrieveOtherVariable(FlowScript.branchSelectionVariable, ctx, bindings); retrieveOtherVariable(FlowScript.replicateRunsVariable, ctx, bindings); if (!serverEval) { this.updateJobVariables(jobVariables, ctx); this.updateResultMetadata(resultMetadata, ctx); } // server evaluation is for one task only, it must not be propagated if (serverEval) { jobVariables.put(PARSERVE_SERVEREVAL, "false"); } return resultValue; } catch (Exception ex) { engine.writeExceptionToError(ex, ctx); throw new ScriptException(ex.getMessage()); } finally { engine.terminateOutput(ctx); if (!serverEval) { engine.engineEval("setwd('" + Utils.toRpath(System.getProperty("java.io.tmpdir")) + "')", ctx); } engine.end(); terminateTailer(); if (!serverEval) { // PRC-32 A ScriptException() must be thrown if the script calls stop() function ScriptException toThrow = null; if (lastErrorMessage != null) { toThrow = new ScriptException(lastErrorMessage); } if (toThrow != null) { throw toThrow; } } } }
From source file:fr.ens.transcriptome.corsen.calc.CorsenHistoryResults.java
/** * Calc the custom value.//from ww w. j a v a2s . c o m * @param cr CorsenResults * @return the custom value */ private double calcCustomValue(final CorsenResult cr) { if (this.script == null) return Double.NaN; Map<Particle3D, Distance> in = cr.getMinDistances(); long inCount = 0; long outCount = 0; for (Map.Entry<Particle3D, Distance> e : in.entrySet()) { final Particle3D particle = e.getKey(); final long intensity = particle.getIntensity(); final Distance distance = e.getValue(); inCount += intensity; final Bindings b = this.script.getEngine().getBindings(ScriptContext.ENGINE_SCOPE); b.put("i", intensity); b.put("d", distance.getDistance()); try { Object o = this.script.eval(); if (o instanceof Boolean && ((Boolean) o) == true) outCount += intensity; } catch (ScriptException e1) { } } return (double) outCount / (double) inCount; }
From source file:org.labkey.nashorn.NashornController.java
private Pair<ScriptEngine, ScriptContext> getNashorn(boolean useSession) throws Exception { ScriptEngineManager engineManager = new ScriptEngineManager(); ScriptEngine engine;// www. ja v a 2s.c o m ScriptContext context; Callable<ScriptEngine> createContext = new Callable<ScriptEngine>() { @Override @NotNull public ScriptEngine call() throws Exception { NashornScriptEngineFactory factory = new NashornScriptEngineFactory(); ScriptEngine engine = factory.getScriptEngine(new String[] { "--global-per-engine" }); return engine; } }; if (useSession) { HttpServletRequest req = getViewContext().getRequest(); engine = SessionHelper.getAttribute(req, this.getClass().getName() + "#scriptEngine", createContext); } else { engine = createContext.call(); } Bindings engineScope = engine.getBindings(ScriptContext.ENGINE_SCOPE); engineScope.put("LABKEY", new org.labkey.nashorn.env.LABKEY(getViewContext())); Bindings globalScope = engine.getBindings(ScriptContext.GLOBAL_SCOPE); // null==engine.getBindings(ScriptContext.GLOBAL_SCOPE), because of --global-per-engine // some docs mention enginScope.get("nashorn.global"), but that is also null if (null == globalScope) globalScope = (Bindings) engineScope.get("nashorn.global"); if (null == globalScope) globalScope = engineScope; globalScope.put("console", new Console()); return new Pair<>(engine, engine.getContext()); }
From source file:com.hypersocket.upgrade.UpgradeServiceImpl.java
private ScriptEngine buildEngine(Map<String, Object> beans, URL script, ScriptContext context) throws ScriptException, IOException { // Create a new scope for the beans Bindings engineScope = context.getBindings(ScriptContext.ENGINE_SCOPE); for (String key : beans.keySet()) { engineScope.put(key, beans.get(key)); }//w ww. j a v a2s . c o m engineScope.put("ctx", springContext); // Execute the script String name = script.getPath(); int idx; if ((idx = name.indexOf("/")) > -1) { name = name.substring(idx + 1); } if ((idx = name.lastIndexOf(".")) > -1) { name = name.substring(idx + 1); } ScriptEngine engine = manager.getEngineByExtension(name); if (engine == null) { throw new IOException("No scripting engine found for " + name); } return engine; }
From source file:com.aionemu.commons.scripting.AionScriptEngineManager.java
public void executeScript(ScriptEngine engine, File file) throws FileNotFoundException, ScriptException { BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(file))); if (VERBOSE_LOADING) { log.info("Loading Script: " + file.getAbsolutePath()); }/*from w w w . j av a2 s. c om*/ if (PURGE_ERROR_LOG) { String name = file.getAbsolutePath() + ".error.log"; File errorLog = new File(name); if (errorLog.isFile()) { errorLog.delete(); } } if (engine instanceof Compilable && ATTEMPT_COMPILATION) { ScriptContext context = new SimpleScriptContext(); context.setAttribute("mainClass", getClassForFile(file).replace('/', '.').replace('\\', '.'), ScriptContext.ENGINE_SCOPE); context.setAttribute(ScriptEngine.FILENAME, file.getName(), ScriptContext.ENGINE_SCOPE); context.setAttribute("classpath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE); context.setAttribute("sourcepath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE); context.setAttribute("parentLoader", ClassLoader.getSystemClassLoader(), ScriptContext.ENGINE_SCOPE); setCurrentLoadingScript(file); ScriptContext ctx = engine.getContext(); try { engine.setContext(context); if (USE_COMPILED_CACHE) { CompiledScript cs = _cache.loadCompiledScript(engine, file); cs.eval(context); } else { Compilable eng = (Compilable) engine; CompiledScript cs = eng.compile(reader); cs.eval(context); } } finally { engine.setContext(ctx); setCurrentLoadingScript(null); context.removeAttribute(ScriptEngine.FILENAME, ScriptContext.ENGINE_SCOPE); context.removeAttribute("mainClass", ScriptContext.ENGINE_SCOPE); context.removeAttribute("parentLoader", ScriptContext.ENGINE_SCOPE); } } else { ScriptContext context = new SimpleScriptContext(); context.setAttribute("mainClass", getClassForFile(file).replace('/', '.').replace('\\', '.'), ScriptContext.ENGINE_SCOPE); context.setAttribute(ScriptEngine.FILENAME, file.getName(), ScriptContext.ENGINE_SCOPE); context.setAttribute("classpath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE); context.setAttribute("sourcepath", SCRIPT_FOLDER.getAbsolutePath(), ScriptContext.ENGINE_SCOPE); context.setAttribute("parentLoader", ClassLoader.getSystemClassLoader(), ScriptContext.ENGINE_SCOPE); setCurrentLoadingScript(file); try { engine.eval(reader, context); } finally { setCurrentLoadingScript(null); engine.getContext().removeAttribute(ScriptEngine.FILENAME, ScriptContext.ENGINE_SCOPE); engine.getContext().removeAttribute("mainClass", ScriptContext.ENGINE_SCOPE); engine.getContext().removeAttribute("parentLoader", ScriptContext.ENGINE_SCOPE); } } }