/*
* Copyright (c) 2006-2010, KNOPFLERFISH project
* 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 the KNOPFLERFISH project 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 org.knopflerfish.bundle.component;
import org.osgi.framework.*;
import org.osgi.service.log.LogService;
import org.osgi.util.tracker.ServiceTracker;
public class Activator implements BundleActivator
{
static boolean TCK_BUG_COMPLIANT = true;
private static BundleContext bc;
private static ServiceTracker logTracker;
private SCR scr;
/**
* Initialize log and start SCR.
*/
public void start(BundleContext bc) throws Exception {
Activator.bc = bc;
logTracker = new ServiceTracker(bc, LogService.class.getName(), null);
logTracker.open();
scr = new SCR(bc);
scr.start();
}
/**
* Stop SCR
*/
public void stop(BundleContext bc) {
if (scr != null) {
scr.stop();
}
}
//
// Log utility methods for component bundle
//
/**
* Log info message via specified BundleContext
*/
static void logInfo(BundleContext bc, String msg) {
logBC(bc, LogService.LOG_INFO, msg, null);
}
/**
* Log error message on specified bundle
*/
static void logError(Bundle b, String msg, Throwable t) {
logError(b.getBundleContext(), msg, t);
}
/**
* Log error message via specified BundleContext
*/
static void logError(BundleContext bc, String msg, Throwable t) {
logBC(bc, LogService.LOG_ERROR, msg, t);
}
/**
* Log message via specified BundleContext
*/
static void logBC(BundleContext bc, int level, String msg, Throwable t) {
ServiceReference sr = bc.getServiceReference(LogService.class.getName());
if (sr != null) {
LogService log = (LogService)bc.getService(sr);
if (log != null) {
log.log(level, msg, t);
bc.ungetService(sr);
}
}
}
//
// Log utility methods for SCR bundle
//
public static void logDebug(String message) {
log(LogService.LOG_DEBUG, message, null);
}
public static void logInfo(String message) {
log(LogService.LOG_INFO, message, null);
}
public static void logWarning(String message) {
log(LogService.LOG_WARNING, message, null);
}
public static void logError(String message) {
log(LogService.LOG_ERROR, message, null);
}
public static void logError(String message, Throwable t) {
log(LogService.LOG_ERROR, message, t);
}
public static void log(int level, String message, Throwable t) {
if (logTracker == null)
return;
LogService log = (LogService) logTracker.getService();
if (log == null)
return;
if (t == null) {
log.log(level, message);
} else {
log.log(level, message, t);
}
}
}