/**
* Marks the computer as temporarily offline. This retains the underlying {@link Channel}
* connection, but prevent builds from executing.
*
* @param cause If the first argument is true, specify the reason why the node is being put
* offline.
*/
public void setTemporarilyOffline(boolean temporarilyOffline, OfflineCause cause) {
offlineCause = temporarilyOffline ? cause : null;
this.temporarilyOffline = temporarilyOffline;
Node node = getNode();
if (node != null) {
node.setTemporaryOfflineCause(offlineCause);
}
Jenkins.getInstance().getQueue().scheduleMaintenance();
synchronized (statusChangeLock) {
statusChangeLock.notifyAll();
}
for (ComputerListener cl : ComputerListener.all()) {
if (temporarilyOffline) cl.onTemporarilyOffline(this, cause);
else cl.onTemporarilyOnline(this);
}
}
/**
* Updates Computers.
*
* <p>This method tries to reuse existing {@link Computer} objects so that we won't upset {@link
* Executor}s running in it.
*/
protected void updateComputerList(boolean automaticSlaveLaunch) throws IOException {
Map<Node, Computer> computers = getComputerMap();
synchronized (
updateComputerLock) { // just so that we don't have two code updating computer list at the
// same time
Map<String, Computer> byName = new HashMap<String, Computer>();
for (Computer c : computers.values()) {
if (c.getNode() == null) continue; // this computer is gone
byName.put(c.getNode().getNodeName(), c);
}
Set<Computer> old = new HashSet<Computer>(computers.values());
Set<Computer> used = new HashSet<Computer>();
updateComputer(this, byName, used, automaticSlaveLaunch);
for (Node s : getNodes()) {
long start = System.currentTimeMillis();
updateComputer(s, byName, used, automaticSlaveLaunch);
if (LOG_STARTUP_PERFORMANCE)
LOGGER.info(
String.format(
"Took %dms to update node %s",
System.currentTimeMillis() - start, s.getNodeName()));
}
// find out what computers are removed, and kill off all executors.
// when all executors exit, it will be removed from the computers map.
// so don't remove too quickly
old.removeAll(used);
for (Computer c : old) {
killComputer(c);
}
}
getQueue().scheduleMaintenance();
for (ComputerListener cl : ComputerListener.all()) cl.onConfigurationChange();
}