/*
* Copyright (c)2013 Florin T.Pătraşcu
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ca.simplegames.micro.controllers;
import ca.simplegames.micro.Controller;
import ca.simplegames.micro.MicroContext;
import ca.simplegames.micro.RedirectException;
import ca.simplegames.micro.SiteContext;
import org.apache.bsf.BSFEngine;
import org.apache.bsf.BSFException;
import org.apache.bsf.BSFManager;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Map;
/**
* A basic wrapper around a scripting controller
*
* @author <a href="mailto:florin.patrascu@gmail.com">Florin T.PATRASCU</a>
* @since $Revision$ (created: 2012-12-19 3:50 PM)
*/
public class ScriptController implements Controller {
private String language = null;
private String script = null;
private String controllerName;
/**
* Construct a new ScriptController for a given script.
*
* @param site The SiteContext
* @param script The file representing the script
*/
public ScriptController(SiteContext site, String controllerName, String script) {
if (StringUtils.isNotBlank(controllerName) && StringUtils.isNotBlank(script)) {
this.script = script;
try {
language = BSFManager.getLangFromFilename(controllerName);
} catch (BSFException e) {
e.printStackTrace();
}
this.controllerName = controllerName;
}
}
/**
* instantiate a new BSF Engine and evaluate the script of the Controller
*
* @param context a Map containing input parameters
* @param configuration an action specific configuration. Can be null
* @throws ControllerException
*/
public void execute(MicroContext context, Map configuration) throws ControllerException {
final Logger logger = LoggerFactory.getLogger(controllerName);
try {
// pre-load the engine to make sure we were called right
final SiteContext site = context.getSiteContext();
if (site != null) {
BSFEngine bsfEngine = site.getBSFEngine(language, context, configuration, logger);
// Execute with the proper language, the fileName (for error reporting),
// the row and column to start at, and finally the contents of the script
// some examples: http://massapi.com/class/bs/BSFManager.html
bsfEngine.exec(controllerName, 0, 0, script);
} else {
throw new ControllerException("Micro site is not in the current context, please review");
}
// return bsfManager.lookupBean(Globals.SCRIPT_CONTROLLER_RESPONSE);
} catch (BSFException e) {
// check is stupid BSF is eating all the exceptions again >:/
if (e.getMessage() != null && e.getMessage().contains(RedirectException.class.getName())) {
throw new RedirectException(); // stupid ...
} else {
throw new ControllerException(
String.format("error while executing: %s; details: %s", controllerName, e.getMessage()));
}
}
}
}