/** Performs all monitoring concurrently. */
@Override
protected Map<Computer, T> monitor() throws InterruptedException {
Map<Computer, Future<T>> futures = new HashMap<Computer, Future<T>>();
for (Computer c : Jenkins.getInstance().getComputers()) {
try {
VirtualChannel ch = c.getChannel();
futures.put(c, null); // sentinel value
if (ch != null) {
Callable<T, ?> cc = createCallable(c);
if (cc != null) futures.put(c, ch.callAsync(cc));
}
} catch (RuntimeException e) {
LOGGER.log(
WARNING, "Failed to monitor " + c.getDisplayName() + " for " + getDisplayName(), e);
} catch (IOException e) {
LOGGER.log(
WARNING, "Failed to monitor " + c.getDisplayName() + " for " + getDisplayName(), e);
}
}
final long now = System.currentTimeMillis();
final long end = now + getMonitoringTimeOut();
final Map<Computer, T> data = new HashMap<Computer, T>();
for (Entry<Computer, Future<T>> e : futures.entrySet()) {
Computer c = e.getKey();
Future<T> f = futures.get(c);
data.put(c, null); // sentinel value
if (f != null) {
try {
data.put(c, f.get(Math.max(0, end - System.currentTimeMillis()), MILLISECONDS));
} catch (RuntimeException x) {
LOGGER.log(
WARNING, "Failed to monitor " + c.getDisplayName() + " for " + getDisplayName(), x);
} catch (ExecutionException x) {
LOGGER.log(
WARNING, "Failed to monitor " + c.getDisplayName() + " for " + getDisplayName(), x);
} catch (TimeoutException x) {
LOGGER.log(
WARNING, "Failed to monitor " + c.getDisplayName() + " for " + getDisplayName(), x);
}
}
}
return data;
}
public static Future<Map<String, String>> getThreadDumpAsync(VirtualChannel channel)
throws IOException, InterruptedException {
if (channel == null)
return new AsyncFutureImpl<Map<String, String>>(Collections.singletonMap("N/A", "offline"));
return channel.callAsync(new GetThreadDump());
}