Java tutorial
/** * Copyright (C) 2010-2011 Joerg Bellmann <joerg.bellmann@googlemail.com> * * 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.googlecode.t7mp.steps.resources; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.ArrayList; import java.util.Collection; import java.util.Properties; import org.apache.commons.io.IOUtils; import org.apache.maven.plugin.logging.Log; import com.googlecode.t7mp.SetupUtil; import com.googlecode.t7mp.TomcatSetupException; import com.googlecode.t7mp.steps.Context; import com.googlecode.t7mp.steps.Step; import com.googlecode.t7mp.util.CommonsSetupUtil; import com.googlecode.t7mp.util.FilesOnlyFileFilter; /** * * @author jbellmann * */ public class CopyUserConfigStep implements Step { private File catalinaBaseDir; private File userConfigDir; private Log log; private SetupUtil setupUtil = new CommonsSetupUtil(); @Override public void execute(Context context) { // setup fields this.catalinaBaseDir = context.getMojo().getCatalinaBase(); this.userConfigDir = context.getMojo().getTomcatConfigDirectory(); this.log = context.getLog(); // if (userConfigDir == null) { log.info("No directory for userConfigFiles configured."); return; } if (!userConfigDir.exists() || !userConfigDir.isDirectory()) { log.warn("The configured Directory for configuration files does not exist. " + userConfigDir.getAbsolutePath()); log.warn("Ignoring user configuration."); } if (userConfigDir.exists() && userConfigDir.isDirectory()) { File[] files = userConfigDir.listFiles(new FilesOnlyFileFilter()); for (File configFile : files) { try { if (configFile.getName().equals("catalina.properties")) { mergeUserCatalinaPropertiesWithDefault(configFile); continue; } log.debug("Copy provided config file '" + configFile.getName() + "' to " + catalinaBaseDir.getAbsolutePath() + "/conf/" + configFile.getName()); this.setupUtil.copy(new FileInputStream(configFile), new FileOutputStream(new File(catalinaBaseDir, "/conf/" + configFile.getName()))); } catch (FileNotFoundException e) { throw new TomcatSetupException(e.getMessage(), e); } catch (IOException e) { throw new TomcatSetupException(e.getMessage(), e); } } } } private void mergeUserCatalinaPropertiesWithDefault(File userCatlinaPropertiesFile) throws IOException { File defaultConfigFile = new File(catalinaBaseDir, "/conf/catalina.properties"); Properties userCatalinaProperties = loadPropertiesFromFile(userCatlinaPropertiesFile); Properties defaultCatalinProperties = loadPropertiesFromFile(defaultConfigFile); mergeProperties(defaultCatalinProperties, userCatalinaProperties, getExcludes()); writePropertiesToFile(defaultCatalinProperties, defaultConfigFile); } private Properties loadPropertiesFromFile(File propertiesFile) throws IOException { Properties properties = new Properties(); InputStream in = new FileInputStream(propertiesFile); try { properties.load(in); } finally { IOUtils.closeQuietly(in); } return properties; } private Collection<String> getExcludes() { Collection<String> excludes = new ArrayList<String>(); excludes.add("http.port"); excludes.add("shutdown.port"); excludes.add("shutdown.command"); return excludes; } private void mergeProperties(Properties target, Properties source, Collection<String> excludes) { for (Object key : source.keySet()) { if (!excludes.contains(key)) { target.setProperty((String) key, (String) source.get(key)); } else { log.debug("Skip property " + key + " from user catalina.properties"); } } } private void writePropertiesToFile(Properties properties, File target) throws IOException { OutputStream defaultOut = null; try { defaultOut = new FileOutputStream(target); properties.store(defaultOut, ""); } finally { IOUtils.closeQuietly(defaultOut); } } }