/*
* Copyright 2010 Granule Inc.
*
* 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 com.granule.cache;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.HashMap;
import javax.servlet.ServletContext;
import com.granule.CompressorSettings;
import com.granule.JSCompileException;
import com.granule.utils.Utf8Properties;
/**
* User: Dario Wunsch
* Date: 23.07.2010
* Time: 3:34:11
*/
public class TagCacheFactory {
public final static String PRODUCTION_PATH = "/WEB-INF/granule.properties";
public final static String DEBUG_PATH = "/WEB-INF/granule.debug.properties";
public final static String DEVELOPER_PATH = "/WEB-INF/granule.developer.properties";
private static TagCacheImpl instance = null;
public static TagCache getInstance() throws JSCompileException {
if (instance==null)
throw new JSCompileException("Granule cache was loaded not on the server start-up. Recommended to add the parameter <load-on-startup>1<load-on-startup> into servlet configuration in web.xml.");
return instance;
}
public static void init(ServletContext context) throws IOException {
CompressorSettings settings = initInstance(context.getRealPath("/"));
instance.initWeb(context, settings);
}
private static CompressorSettings initInstance(String rootPath) throws IOException {
CompressorSettings settings = getCompressorSettings(rootPath);
if (settings.getCache().equals(CompressorSettings.DISK_CACHE_VALUE))
instance = FileCache.getInstance();
else instance = MemoryCache.getInstance();
return settings;
}
public static void init(String rootPath) throws IOException {
initInstance(rootPath);
instance.initForStandalone(rootPath, getCompressorSettings(rootPath));
}
protected static final Utf8Properties settings = new Utf8Properties();
protected static boolean settingsLoaded = false;
public static CompressorSettings getCompressorSettings(String rootPath) throws IOException {
synchronized (settings) {
if (!settingsLoaded) {
loadSettings(rootPath, null, false);
}
}
return new CompressorSettings(settings);
}
public static CompressorSettings getProductionCompressorSettings(String rootPath, HashMap<String, String> addition) throws IOException {
synchronized (settings) {
if (!settingsLoaded) {
loadSettings(rootPath, addition, true);
}
}
return new CompressorSettings(settings);
}
private static void loadSettings(String rootPath, HashMap<String, String> addition, boolean productionSettings) throws IOException {
File productionPropertiesFile = new File(rootPath+PRODUCTION_PATH);
if (productionPropertiesFile.exists())
settings.load(new FileInputStream(productionPropertiesFile));
File debugPropertiesFile = new File(rootPath+DEBUG_PATH);
if (!productionSettings && debugPropertiesFile.exists())
settings.load(new FileInputStream(debugPropertiesFile));
File developerPropertiesFile = new File(rootPath+DEVELOPER_PATH);
if (!productionSettings && developerPropertiesFile.exists())
settings.load(new FileInputStream(developerPropertiesFile));
if (addition!=null) {
settings.putAll(addition);
}
settingsLoaded = true;
}
}