package org.apache.karaf.shell.console.impl.jline;
import java.io.InputStream;
import java.util.concurrent.atomic.AtomicBoolean;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.FrameworkEvent;
import org.osgi.framework.FrameworkListener;
import org.osgi.framework.startlevel.FrameworkStartLevel;
/**
* Delay the start of the console until the desired start level is reached or enter is pressed
*/
class DelayedStarted extends Thread implements FrameworkListener {
private static final String SYSTEM_PROP_KARAF_CONSOLE_STARTED = "karaf.console.started";
private final AtomicBoolean started = new AtomicBoolean(false);
private final InputStream in;
private final Runnable console;
private final BundleContext bundleContext;
DelayedStarted(Runnable console, BundleContext bundleContext, InputStream in) {
super("Karaf Shell Console Thread");
this.console = console;
this.bundleContext = bundleContext;
this.in = in;
int defaultStartLevel = Integer.parseInt(System.getProperty(Constants.FRAMEWORK_BEGINNING_STARTLEVEL));
int startLevel = bundleContext.getBundle(0).adapt(FrameworkStartLevel.class).getStartLevel();
if (startLevel >= defaultStartLevel) {
started.set(true);
} else {
bundleContext.addFrameworkListener(this);
frameworkEvent(new FrameworkEvent(FrameworkEvent.STARTLEVEL_CHANGED, bundleContext.getBundle(), null));
}
}
public void run() {
try {
while (!started.get()) {
if (in.available() == 0) {
Thread.sleep(10);
}
while (in.available() > 0) {
char ch = (char) in.read();
if (ch == '\r' || ch == '\n') {
started.set(true);
break;
}
}
}
} catch (Throwable t) {
// Ignore
}
// Signal to the main module that it can stop displaying the startup progress
System.setProperty(SYSTEM_PROP_KARAF_CONSOLE_STARTED, "true");
this.bundleContext.removeFrameworkListener(this);
console.run();
}
public void frameworkEvent(FrameworkEvent event) {
if (event.getType() == FrameworkEvent.STARTLEVEL_CHANGED) {
int defaultStartLevel = Integer.parseInt(System.getProperty(Constants.FRAMEWORK_BEGINNING_STARTLEVEL));
int startLevel = this.bundleContext.getBundle(0).adapt(FrameworkStartLevel.class).getStartLevel();
if (startLevel >= defaultStartLevel) {
started.set(true);
}
}
}
}