/**
* When a slave is connected, redo the node monitoring.
*
* @author Kohsuke Kawaguchi
*/
@Extension
public class NodeMonitorUpdater extends ComputerListener {
private static final Runnable MONITOR_UPDATER =
new Runnable() {
@Override
public void run() {
for (NodeMonitor nm : Jenkins.getInstance().getComputer().getMonitors()) {
nm.triggerUpdate();
}
}
};
private Future<?> future = Futures.precomputed(null);
/**
* Triggers the update with 5 seconds quiet period, to avoid triggering data check too often when
* multiple slaves become online at about the same time.
*/
@Override
public void onOnline(Computer c, TaskListener listener) throws IOException, InterruptedException {
synchronized (this) {
future.cancel(false);
future = Timer.get().schedule(MONITOR_UPDATER, 5, TimeUnit.SECONDS);
}
}
}
/**
* Equivalent to {@code disconnect(null)}
*
* @deprecated as of 1.320. Use {@link #disconnect(OfflineCause)} and specify the cause.
*/
public Future<?> disconnect() {
if (Util.isOverridden(Computer.class, getClass(), "disconnect", OfflineCause.class))
// if the subtype already derives disconnect(OfflineCause), delegate to it
return disconnect(null);
connectTime = 0;
return Futures.precomputed(null);
}
/**
* Disconnect this computer.
*
* <p>If this is the master, no-op. This method may return immediately while the launch operation
* happens asynchronously.
*
* @param cause Object that identifies the reason the node was disconnected.
* @return {@link Future} to track the asynchronous disconnect operation.
* @see #connect(boolean)
* @since 1.320
*/
public Future<?> disconnect(OfflineCause cause) {
offlineCause = cause;
if (Util.isOverridden(Computer.class, getClass(), "disconnect"))
return disconnect(); // legacy subtypes that extend disconnect().
connectTime = 0;
return Futures.precomputed(null);
}
