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/***************************************************************************
* Copyright (c) 2004 - 2007 Eike Stepper, Germany.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
**************************************************************************/
package org.eclipse.net4j.internal.util.bundle;
import org.eclipse.net4j.internal.util.om.LegacyPlatform;
import org.eclipse.net4j.internal.util.om.OSGiPlatform;
import org.eclipse.net4j.internal.util.om.trace.ContextTracer;
import org.eclipse.net4j.util.io.IOUtil;
import org.eclipse.net4j.util.om.OMBundle;
import org.eclipse.net4j.util.om.OMPlatform;
import org.eclipse.net4j.util.om.log.OMLogHandler;
import org.eclipse.net4j.util.om.log.OMLogger;
import org.eclipse.net4j.util.om.log.OMLogger.Level;
import org.eclipse.net4j.util.om.trace.OMTraceHandler;
import org.eclipse.net4j.util.om.trace.OMTraceHandlerEvent;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Map;
import java.util.Properties;
import java.util.Queue;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentLinkedQueue;
/**
* @author Eike Stepper
*/
public abstract class AbstractPlatform implements OMPlatform
{
public static final String SYSTEM_PROPERTY_NET4J_CONFIG = "net4j.config"; //$NON-NLS-1$
static Object systemContext;
private static ContextTracer __TRACER__;
private Map<String, AbstractBundle> bundles = new ConcurrentHashMap(0);
private Queue<OMLogHandler> logHandlers = new ConcurrentLinkedQueue();
private Queue<OMTraceHandler> traceHandlers = new ConcurrentLinkedQueue();
private boolean debugging;
protected AbstractPlatform()
{
debugging = Boolean.parseBoolean(System.getProperty("debug", "false")); //$NON-NLS-1$ //$NON-NLS-2$
}
public synchronized OMBundle bundle(String bundleID, Class accessor)
{
OMBundle bundle = bundles.get(bundleID);
if (bundle == null)
{
bundle = createBundle(bundleID, accessor);
}
return bundle;
}
public void addLogHandler(OMLogHandler logHandler)
{
if (!logHandlers.contains(logHandler))
{
logHandlers.add(logHandler);
}
}
public void removeLogHandler(OMLogHandler logHandler)
{
logHandlers.remove(logHandler);
}
public void addTraceHandler(OMTraceHandler traceHandler)
{
if (!traceHandlers.contains(traceHandler))
{
traceHandlers.add(traceHandler);
}
}
public void removeTraceHandler(OMTraceHandler traceHandler)
{
traceHandlers.remove(traceHandler);
}
public boolean isDebugging()
{
return debugging;
}
public void setDebugging(boolean debugging)
{
this.debugging = debugging;
}
public File getConfigFolder()
{
String config = System.getProperty(SYSTEM_PROPERTY_NET4J_CONFIG, "config");
File configFolder = new File(config);
if (!configFolder.exists())
{
if (!configFolder.mkdirs())
{
OM.LOG.error("Config folder " + config + " could not be created");
return null;
}
}
if (!configFolder.isDirectory())
{
OM.LOG.error("Config folder " + config + " is not a directoy");
return null;
}
return configFolder;
}
public File getConfigFile(String name)
{
File configFolder = getConfigFolder();
if (configFolder == null)
{
return null;
}
return new File(configFolder, name);
}
public Properties getConfigProperties(String name)
{
File configFile = getConfigFile(name);
if (configFile == null)
{
return null;
}
FileInputStream fis = null;
try
{
fis = new FileInputStream(configFile);
Properties properties = new Properties();
properties.load(fis);
return properties;
}
catch (IOException ex)
{
OM.LOG.error("Config file " + configFile.getAbsolutePath() + " could not be read");
return null;
}
finally
{
IOUtil.closeSilent(fis);
}
}
public void log(OMLogger logger, Level level, String msg, Throwable t)
{
for (OMLogHandler logHandler : logHandlers)
{
try
{
logHandler.logged(logger, level, msg, t);
}
catch (Exception ex)
{
if (TRACER().isEnabled())
{
TRACER().trace(ex);
}
}
}
}
public void trace(OMTraceHandlerEvent event)
{
for (OMTraceHandler traceHandler : traceHandlers)
{
try
{
traceHandler.traced(event);
}
catch (Exception ex)
{
if (TRACER().isEnabled())
{
TRACER().trace(ex);
}
}
}
}
protected Map<String, AbstractBundle> getBundles()
{
return bundles;
}
protected abstract OMBundle createBundle(String bundleID, Class accessor);
protected abstract String getDebugOption(String bundleID, String option);
protected abstract void setDebugOption(String bundleID, String option, String value);
/**
* TODO Make configurable via system property
*/
public static synchronized OMPlatform createPlatform()
{
try
{
if (systemContext != null)
{
return new OSGiPlatform(systemContext);
}
return new LegacyPlatform();
}
catch (Exception ex)
{
if (TRACER().isEnabled())
{
TRACER().trace(ex);
}
}
return null;
}
private static ContextTracer TRACER()
{
if (__TRACER__ == null)
{
__TRACER__ = new ContextTracer(OM.DEBUG_OM, AbstractPlatform.class);
}
return __TRACER__;
}
}
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