| package org.apache.turbine.services.rundata; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| import java.util.Iterator; |
| import java.util.Locale; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| |
| import javax.servlet.ServletConfig; |
| import javax.servlet.ServletContext; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.apache.commons.configuration2.Configuration; |
| import org.apache.fulcrum.parser.CookieParser; |
| import org.apache.fulcrum.parser.DefaultCookieParser; |
| import org.apache.fulcrum.parser.DefaultParameterParser; |
| import org.apache.fulcrum.parser.ParameterParser; |
| import org.apache.fulcrum.parser.ParserService; |
| import org.apache.fulcrum.pool.PoolException; |
| import org.apache.fulcrum.pool.PoolService; |
| import org.apache.turbine.Turbine; |
| import org.apache.turbine.services.InitializationException; |
| import org.apache.turbine.services.TurbineBaseService; |
| import org.apache.turbine.services.TurbineServices; |
| import org.apache.turbine.util.RunData; |
| import org.apache.turbine.util.ServerData; |
| import org.apache.turbine.util.TurbineException; |
| import org.apache.turbine.util.TurbineRuntimeException; |
| |
| /** |
| * The RunData Service provides the implementations for RunData and |
| * related interfaces required by request processing. It supports |
| * different configurations of implementations, which can be selected |
| * by specifying a configuration key. It may use pooling, in which case |
| * the implementations should implement the Recyclable interface. |
| * |
| * @author <a href="mailto:ilkka.priha@simsoft.fi">Ilkka Priha</a> |
| * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a> |
| * @version $Id$ |
| */ |
| public class TurbineRunDataService |
| extends TurbineBaseService |
| implements RunDataService |
| { |
| |
| /** The default implementation of the RunData object*/ |
| private static final String DEFAULT_RUN_DATA = |
| DefaultTurbineRunData.class.getName(); |
| |
| /** The default implementation of the Parameter Parser object */ |
| private static final String DEFAULT_PARAMETER_PARSER = |
| DefaultParameterParser.class.getName(); |
| |
| /** The default implementation of the Cookie parser object */ |
| private static final String DEFAULT_COOKIE_PARSER = |
| DefaultCookieParser.class.getName(); |
| |
| /** The map of configurations. */ |
| private final ConcurrentMap<String, Object> configurations = new ConcurrentHashMap<>(); |
| |
| /** A class cache. */ |
| private final ConcurrentMap<String, Class<?>> classCache = new ConcurrentHashMap<>(); |
| |
| /** Private reference to the pool service for object recycling */ |
| private PoolService pool = null; |
| |
| /** Private reference to the parser service for parser recycling */ |
| private ParserService parserService = null; |
| |
| /** |
| * Constructs a RunData Service. |
| */ |
| public TurbineRunDataService() |
| { |
| super(); |
| } |
| |
| /** |
| * Initializes the service by setting the pool capacity. |
| * |
| * @throws InitializationException if initialization fails. |
| */ |
| @Override |
| public void init() |
| throws InitializationException |
| { |
| // Create a default configuration. |
| String[] def = new String[] |
| { |
| DEFAULT_RUN_DATA, |
| DEFAULT_PARAMETER_PARSER, |
| DEFAULT_COOKIE_PARSER |
| }; |
| configurations.put(DEFAULT_CONFIG, def.clone()); |
| |
| // Check other configurations. |
| Configuration conf = getConfiguration(); |
| if (conf != null) |
| { |
| String key,value; |
| String[] config; |
| String[] plist = new String[] |
| { |
| RUN_DATA_KEY, |
| PARAMETER_PARSER_KEY, |
| COOKIE_PARSER_KEY |
| }; |
| for (Iterator<String> i = conf.getKeys(); i.hasNext();) |
| { |
| key = i.next(); |
| value = conf.getString(key); |
| int j = 0; |
| for (String plistKey : plist) |
| { |
| if (key.endsWith(plistKey) && key.length() > plistKey.length() + 1) |
| { |
| key = key.substring(0, key.length() - plistKey.length() - 1); |
| config = (String[]) configurations.get(key); |
| if (config == null) |
| { |
| config = def.clone(); |
| configurations.put(key, config); |
| } |
| config[j] = value; |
| break; |
| } |
| j++; |
| } |
| } |
| } |
| |
| pool = (PoolService)TurbineServices.getInstance().getService(PoolService.ROLE); |
| |
| if (pool == null) |
| { |
| throw new InitializationException("RunData Service requires" |
| + " configured Pool Service!"); |
| } |
| |
| parserService = (ParserService)TurbineServices.getInstance().getService(ParserService.ROLE); |
| |
| if (parserService == null) |
| { |
| throw new InitializationException("RunData Service requires" |
| + " configured Parser Service!"); |
| } |
| |
| setInit(true); |
| } |
| |
| /** |
| * Shutdown the service |
| * |
| * @see org.apache.turbine.services.TurbineBaseService#shutdown() |
| */ |
| @Override |
| public void shutdown() |
| { |
| classCache.clear(); |
| super.shutdown(); |
| } |
| |
| /** |
| * Gets a default RunData object. |
| * |
| * @param req a servlet request. |
| * @param res a servlet response. |
| * @param config a servlet config. |
| * @return a new or recycled RunData object. |
| * @throws TurbineException if the operation fails. |
| */ |
| @Override |
| public RunData getRunData(HttpServletRequest req, |
| HttpServletResponse res, |
| ServletConfig config) |
| throws TurbineException |
| { |
| return getRunData(DEFAULT_CONFIG, req, res, config); |
| } |
| |
| /** |
| * Gets a RunData instance from a specific configuration. |
| * |
| * @param key a configuration key. |
| * @param req a servlet request. |
| * @param res a servlet response. |
| * @param config a servlet config. |
| * @return a new or recycled RunData object. |
| * @throws TurbineException if the operation fails. |
| * @throws IllegalArgumentException if any of the parameters are null. |
| * TODO The "key" parameter should be removed in favor of just looking up what class via the roleConfig avalon file. |
| */ |
| @Override |
| public RunData getRunData(String key, |
| HttpServletRequest req, |
| HttpServletResponse res, |
| ServletConfig config) |
| throws TurbineException, |
| IllegalArgumentException |
| { |
| // The RunData object caches all the information that is needed for |
| // the execution lifetime of a single request. A RunData object |
| // is created/recycled for each and every request and is passed |
| // to each and every module. Since each thread has its own RunData |
| // object, it is not necessary to perform synchronization for |
| // the data within this object. |
| if (req == null || res == null || config == null) |
| { |
| throw new IllegalArgumentException("HttpServletRequest, " |
| + "HttpServletResponse or ServletConfig was null."); |
| } |
| |
| // Get the specified configuration. |
| String[] cfg = (String[]) configurations.get(key); |
| if (cfg == null) |
| { |
| throw new TurbineException("RunTime configuration '" + key + "' is undefined"); |
| } |
| |
| TurbineRunData data; |
| try |
| { |
| Class<?> runDataClazz = classCache.computeIfAbsent(cfg[0], this::classForName); |
| Class<?> parameterParserClazz = classCache.computeIfAbsent(cfg[1], this::classForName); |
| Class<?> cookieParserClazz = classCache.computeIfAbsent(cfg[2], this::classForName); |
| |
| data = (TurbineRunData) pool.getInstance(runDataClazz); |
| @SuppressWarnings("unchecked") // ok |
| ParameterParser pp = parserService.getParser((Class<ParameterParser>)parameterParserClazz); |
| data.get(Turbine.class).put(ParameterParser.class, pp); |
| |
| @SuppressWarnings("unchecked") // ok |
| CookieParser cp = parserService.getParser((Class<CookieParser>)cookieParserClazz); |
| data.get(Turbine.class).put(CookieParser.class, cp); |
| |
| Locale locale = req.getLocale(); |
| |
| if (locale == null) |
| { |
| // get the default from the Turbine configuration |
| locale = data.getLocale(); |
| } |
| |
| // set the locale detected and propagate it to the parsers |
| data.setLocale(locale); |
| } |
| catch (PoolException pe) |
| { |
| throw new TurbineException("RunData configuration '" + key + "' is illegal caused a pool exception", pe); |
| } |
| catch (TurbineRuntimeException | ClassCastException | InstantiationException x) |
| { |
| throw new TurbineException("RunData configuration '" + key + "' is illegal", x); |
| } |
| |
| // Set the request and response. |
| data.get(Turbine.class).put(HttpServletRequest.class, req); |
| data.get(Turbine.class).put(HttpServletResponse.class, res); |
| |
| // Set the servlet configuration. |
| data.get(Turbine.class).put(ServletConfig.class, config); |
| data.get(Turbine.class).put(ServletContext.class, config.getServletContext()); |
| |
| // Set the ServerData. |
| data.get(Turbine.class).put(ServerData.class, new ServerData(req)); |
| |
| return data; |
| } |
| |
| /** |
| * Puts the used RunData object back to the factory for recycling. |
| * |
| * @param data the used RunData object. |
| * @return true, if pooling is supported and the object was accepted. |
| */ |
| @Override |
| public boolean putRunData(RunData data) |
| { |
| if (data instanceof TurbineRunData) |
| { |
| parserService.putParser(((TurbineRunData) data).getParameterParser()); |
| parserService.putParser(((TurbineRunData) data).getCookieParser()); |
| |
| return pool.putInstance(data); |
| } |
| else |
| { |
| return false; |
| } |
| } |
| |
| @SuppressWarnings("unchecked") // ok |
| private <T> Class<T> classForName(String className) throws TurbineRuntimeException |
| { |
| try |
| { |
| return (Class<T>) Class.forName(className); |
| } |
| catch (ClassNotFoundException e) |
| { |
| throw new TurbineRuntimeException("Could not load class " + className, e); |
| } |
| } |
| } |