/**
* Handle notification of the creation of a new classloader.
*
* @param logger the logging channel
* @param label the classloader label
* @param category the classloader category
* @param classloader the new classloader to report
*/
private static void classloaderConstructed(
Logger logger, String label, Category category, ClassLoader classloader) {
if (logger.isTraceEnabled()) {
int id = System.identityHashCode(classloader);
StringBuffer buffer = new StringBuffer();
buffer.append("new ");
buffer.append(category.toString());
buffer.append(" classloader for " + label);
buffer.append("\n id: " + id);
ClassLoader parent = classloader.getParent();
if (null != parent) {
int pid = System.identityHashCode(parent);
buffer.append("\n extends: " + pid);
}
if (classloader instanceof URLClassLoader) {
URLClassLoader loader = (URLClassLoader) classloader;
URL[] urls = loader.getURLs();
if (urls.length == 1) {
buffer.append("\n contains: 1 entry");
} else {
buffer.append("\n contains: " + urls.length + " entries");
}
for (int i = 0; i < urls.length; i++) {
URL url = urls[i];
buffer.append("\n [" + (i + 1) + "] " + url.toString());
}
}
logger.trace(buffer.toString());
}
}
private Logger resolveLogger(Logger logger, String command) {
String partition = System.getProperty("dpml.station.partition", null);
if (null != partition) {
return new LoggingAdapter(partition);
} else {
return logger.getChildLogger(command);
}
}
/** Run the dispatch thread. */
public void run() {
try {
m_listener.applianceChanged(m_event);
} catch (Throwable e) {
final String error = "Event distatch error.";
m_logger.error(error, e);
}
}
private boolean deployHandler(
TransitModel model, String command, String path, String[] args, boolean waitFor) {
Logger logger = getLogger();
if (logger.isDebugEnabled()) {
logger.debug("date: " + new Date());
logger.debug("system: " + command);
logger.debug("uri: " + path);
logger.debug("args: [" + toString(args) + "]");
logger.debug(
"system classloader: ["
+ System.identityHashCode(ClassLoader.getSystemClassLoader())
+ "]");
}
Logger log = resolveLogger(logger, command);
try {
URI uri = new URI(path);
Transit transit = Transit.getInstance(model);
setupMonitors(transit, (Adapter) logger);
Part part = Part.load(uri, true);
m_plugin = part.instantiate(new Object[] {model, args, log});
} catch (GeneralException e) {
getLogger().error(e.getMessage());
System.exit(1);
} catch (Exception e) {
Throwable cause = e.getCause();
if ((null != cause) && (cause instanceof GeneralException)) {
getLogger().error(cause.getMessage());
System.exit(1);
} else {
getLogger().error(e.getMessage(), e.getCause());
System.exit(1);
}
} catch (Throwable e) {
final String error = "Deloyment failure." + "\nTarget: " + command + "\n URI: " + path;
getLogger().error(error, e);
System.exit(1);
}
if (m_plugin instanceof Runnable) {
getLogger().debug("starting " + m_plugin.getClass().getName());
Thread thread = new Thread((Runnable) m_plugin);
thread.start();
setShutdownHook(thread);
return true;
} else {
getLogger().debug("deployed " + m_plugin.getClass().getName());
return waitFor;
}
}
