Examples with Invocable javax.script.Invocable used on opensource projects

Example 46 with Invocable

use of javax.script.Invocable in project nifi by apache.

the class ScriptedLookupService method onEnabled.

@Override
@OnEnabled
public void onEnabled(final ConfigurationContext context) {
    synchronized (scriptingComponentHelper.isInitialized) {
        if (!scriptingComponentHelper.isInitialized.get()) {
            scriptingComponentHelper.createResources();
        }
    }
    super.onEnabled(context);
    // Call an non-interface method onEnabled(context), to allow a scripted LookupService the chance to set up as necessary
    final Invocable invocable = (Invocable) scriptEngine;
    if (configurationContext != null) {
        try {
            // Get the actual object from the script engine, versus the proxy stored in lookupService. The object may have additional methods,
            // where lookupService is a proxied interface
            final Object obj = scriptEngine.get("lookupService");
            if (obj != null) {
                try {
                    invocable.invokeMethod(obj, "onEnabled", context);
                } catch (final NoSuchMethodException nsme) {
                    if (getLogger().isDebugEnabled()) {
                        getLogger().debug("Configured script LookupService does not contain an onEnabled() method.");
                    }
                }
            } else {
                throw new ScriptException("No LookupService was defined by the script.");
            }
        } catch (ScriptException se) {
            throw new ProcessException("Error executing onEnabled(context) method", se);
        }
    }
}

Example 47 with Invocable

use of javax.script.Invocable in project nifi by apache.

the class ScriptedRecordSetWriter method reloadScript.

/**
 * Reloads the script RecordSetWriterFactory. This must be called within the lock.
 *
 * @param scriptBody An input stream associated with the script content
 * @return Whether the script was successfully reloaded
 */
@Override
protected boolean reloadScript(final String scriptBody) {
    // note we are starting here with a fresh listing of validation
    // results since we are (re)loading a new/updated script. any
    // existing validation results are not relevant
    final Collection<ValidationResult> results = new HashSet<>();
    try {
        // get the engine and ensure its invocable
        if (scriptEngine instanceof Invocable) {
            final Invocable invocable = (Invocable) scriptEngine;
            // Find a custom configurator and invoke their eval() method
            ScriptEngineConfigurator configurator = scriptingComponentHelper.scriptEngineConfiguratorMap.get(scriptingComponentHelper.getScriptEngineName().toLowerCase());
            if (configurator != null) {
                configurator.eval(scriptEngine, scriptBody, scriptingComponentHelper.getModules());
            } else {
                // evaluate the script
                scriptEngine.eval(scriptBody);
            }
            // get configured processor from the script (if it exists)
            final Object obj = scriptEngine.get("writer");
            if (obj != null) {
                final ComponentLog logger = getLogger();
                try {
                    // set the logger if the processor wants it
                    invocable.invokeMethod(obj, "setLogger", logger);
                } catch (final NoSuchMethodException nsme) {
                    if (logger.isDebugEnabled()) {
                        logger.debug("Configured script RecordSetWriterFactory does not contain a setLogger method.");
                    }
                }
                if (configurationContext != null) {
                    try {
                        // set the logger if the processor wants it
                        invocable.invokeMethod(obj, "setConfigurationContext", configurationContext);
                    } catch (final NoSuchMethodException nsme) {
                        if (logger.isDebugEnabled()) {
                            logger.debug("Configured script RecordSetWriterFactory does not contain a setConfigurationContext method.");
                        }
                    }
                }
                // record the processor for use later
                final RecordSetWriterFactory scriptedWriter = invocable.getInterface(obj, RecordSetWriterFactory.class);
                recordFactory.set(scriptedWriter);
            } else {
                throw new ScriptException("No RecordSetWriterFactory was defined by the script.");
            }
        }
    } catch (final Exception ex) {
        final ComponentLog logger = getLogger();
        final String message = "Unable to load script: " + ex.getLocalizedMessage();
        logger.error(message, ex);
        results.add(new ValidationResult.Builder().subject("ScriptValidation").valid(false).explanation("Unable to load script due to " + ex.getLocalizedMessage()).input(scriptingComponentHelper.getScriptPath()).build());
    }
    // store the updated validation results
    validationResults.set(results);
    // return whether there was any issues loading the configured script
    return results.isEmpty();
}

Example 48 with Invocable

use of javax.script.Invocable in project vorto by eclipse.

the class JavascriptEvalFunction method invoke.

@Override
@SuppressWarnings({ "rawtypes" })
public Object invoke(ExpressionContext context, Object[] parameters) {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("JavaScript");
    try {
        engine.eval(functionBody);
    } catch (ScriptException e) {
        throw new JXPathException("Problem evaluating " + functionName, e);
    }
    Invocable inv = (Invocable) engine;
    try {
        Object[] args;
        int pi = 0;
        Class[] types = toTypes(parameters);
        if (types.length >= 1 && ExpressionContext.class.isAssignableFrom(types[0])) {
            pi = 1;
        }
        args = new Object[parameters.length + pi];
        if (pi == 1) {
            args[0] = context;
        }
        for (int i = 0; i < parameters.length; i++) {
            args[i + pi] = TypeUtils.convert(parameters[i], types[i + pi]);
        }
        return inv.invokeFunction(functionName, unwrap(args));
    } catch (Throwable ex) {
        throw new JXPathInvalidAccessException("Cannot invoke " + functionName, ex);
    }
}

Example 49 with Invocable

use of javax.script.Invocable in project mamute by caelum.

the class MarkDown method parse.

public static synchronized String parse(String content) {
    if (content == null || content.isEmpty())
        return null;
    try {
        Invocable invocable = (Invocable) js;
        Object result = invocable.invokeFunction("marked", content);
        return result.toString();
    } catch (ScriptException | NoSuchMethodException e) {
        throw new RuntimeException(e);
    }
}

Example 50 with Invocable

use of javax.script.Invocable in project HeavenMS by ronancpl.

the class NPCScriptManager method action.

public void action(MapleClient c, byte mode, byte type, int selection) {
    Invocable iv = scripts.get(c);
    if (iv != null) {
        try {
            c.setClickedNPC();
            iv.invokeFunction("action", mode, type, selection);
        } catch (ScriptException | NoSuchMethodException t) {
            if (getCM(c) != null) {
                FilePrinter.printError(FilePrinter.NPC + getCM(c).getNpc() + ".txt", t);
            }
            dispose(c);
        }
    }
}