/*
* Copyright (c) 2003-2011, Simon Brown
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* - Neither the name of Pebble nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package net.sourceforge.pebble;
import net.sourceforge.pebble.security.SecurityRealm;
import net.sourceforge.pebble.util.RelativeDate;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.context.ApplicationContext;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.Map;
import java.util.Properties;
/**
* A bean representing the Pebble context.
*
* @author Simon Brown
*/
public class PebbleContext {
/** the log used by this class */
private static Log log = LogFactory.getLog(PebbleContext.class);
private Configuration configuration;
private ApplicationContext applicationContext;
private String buildVersion;
private String buildDate;
private static final String BUILD_VERSION_KEY = "build.version";
private static final String BUILD_DATE_KEY = "build.date";
/** the time that Pebble was started */
private Date startTime;
/** the directory where Pebble is deployed */
private String webApplicationRoot;
private static final PebbleContext instance = new PebbleContext();
public static PebbleContext getInstance() {
return instance;
}
private PebbleContext() {
// and note when Pebble was started
this.startTime = new Date();
try {
Properties buildProperties = new Properties();
InputStream in = getClass().getClassLoader().getResourceAsStream(
"META-INF/maven/org.sourceforge.pebble/pebble/pom.properties");
if (in != null) {
buildProperties.load(in);
this.buildVersion = buildProperties.getProperty("version");
// It's a little harder to do this in maven, seeing as it's not used anyway, commenting out.
// this.buildDate = buildProperties.getProperty(BUILD_DATE_KEY);
in.close();
} else {
log.warn("No maven pom.properties found, build version set for development");
this.buildVersion = "dev";
}
} catch (IOException e) {
log.error(e.getMessage(), e);
e.printStackTrace();
}
}
/**
* Gets the version of Pebble being used.
*
* @return the version number as a String
*/
public String getBuildVersion() {
return this.buildVersion;
}
/**
* Gets the date that Pebble was built.
*
* @return the date as a String
*/
public String getBuildDate() {
return this.buildDate;
}
/**
* Gets the amount of time that Pebble has been running for.
*
* @return a number of milliseconds
*/
public RelativeDate getUptime() {
return new RelativeDate(new Date().getTime() - startTime.getTime());
}
public long getMemoryUsageInKB() {
return (Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()) / 1024;
}
public long getTotalMemoryInKB() {
return Runtime.getRuntime().totalMemory() / 1024;
}
public Configuration getConfiguration() {
return configuration;
}
public void setConfiguration(Configuration configuration) {
this.configuration = configuration;
}
/**
* Sets the directory where themes are located.
*
* @param webApplicationRoot the absolute path to the webapp root on disk
*/
public void setWebApplicationRoot(String webApplicationRoot) {
this.webApplicationRoot = webApplicationRoot;
}
public String getWebApplicationRoot() {
return webApplicationRoot;
}
public void setApplicationContext(ApplicationContext applicationContext) {
this.applicationContext = applicationContext;
}
public ApplicationContext getApplicationContext() {
return applicationContext;
}
public <T> T getComponent(String name, Class<T> type) {
return applicationContext.getBean(name, type);
}
public <T> T getComponent(Class<T> type) {
Map<String, T> map = applicationContext.getBeansOfType(type);
if (map.isEmpty()) {
return null;
} else if (map.size() > 1) {
throw new IllegalArgumentException("Multiple beans of type " + type + " found.");
} else {
return map.values().iterator().next();
}
}
}