001    package org.apache.myfaces.tobago.example.demo;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one or more
005     * contributor license agreements.  See the NOTICE file distributed with
006     * this work for additional information regarding copyright ownership.
007     * The ASF licenses this file to You under the Apache License, Version 2.0
008     * (the "License"); you may not use this file except in compliance with
009     * the License.  You may obtain a copy of the License at
010     *
011     *      http://www.apache.org/licenses/LICENSE-2.0
012     *
013     * Unless required by applicable law or agreed to in writing, software
014     * distributed under the License is distributed on an "AS IS" BASIS,
015     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016     * See the License for the specific language governing permissions and
017     * limitations under the License.
018     */
019    
020    import org.apache.commons.io.IOUtils;
021    import org.apache.commons.logging.Log;
022    import org.apache.commons.logging.LogFactory;
023    
024    import javax.faces.context.FacesContext;
025    import javax.servlet.ServletContext;
026    import java.util.Properties;
027    import java.io.InputStream;
028    import java.io.IOException;
029    
030    public class ServerInfo {
031    
032      private static final Log LOG = LogFactory.getLog(ServerInfo.class);
033    
034      private String version;
035    
036      private boolean enabled;
037    
038      public ServerInfo() {
039        InputStream pom = null;
040        try {
041          pom = getClass().getClassLoader().getResourceAsStream(
042              "META-INF/maven/org.apache.myfaces.tobago/tobago-core/pom.properties");
043          Properties properties = new Properties();
044          properties.load(pom);
045          version = properties.getProperty("version");
046    
047          /*
048          This should work, too.
049          Package tobagoPackage = Package.getPackage("org.apache.myfaces.tobago.component");
050          version = tobagoPackage.getImplementationVersion();
051          */
052        } catch (IOException e) {
053          LOG.warn("No version info found.", e);
054        } finally {
055          IOUtils.closeQuietly(pom);
056        }
057      }
058    
059      public String getServerInfo() {
060        if (enabled) {
061          return ((ServletContext) FacesContext.getCurrentInstance().getExternalContext().getContext()).getServerInfo();
062        } else {
063          return null;
064        }
065      }
066    
067      public Properties getSystemProperties() {
068        if (enabled) {
069          return System.getProperties();
070        } else {
071          return null;
072        }
073      }
074    
075      public String getVersion() {
076        return version;
077      }
078    
079      public void setVersion(String version) {
080        this.version = version;
081      }
082    
083      public boolean isEnabled() {
084        return enabled;
085      }
086    
087      public void setEnabled(boolean enabled) {
088        this.enabled = enabled;
089      }
090    }