@Override
public Label getAssignedLabel(SubTask task) {
    return label;
}
 

/**
 * {@link ComputerLauncher#afterDisconnect(SlaveComputer, TaskListener)}
 * <p>
 * EC2 Fleet plugin overrides this method to detect jobs which were failed because of
 * EC2 instance was terminated/stopped. It could be manual stop or because of Spot marked.
 * In all cases as soon as job aborted because of broken connection and slave is offline
 * it will try to resubmit aborted job back to the queue, so user doesn't need to do that manually
 * and another slave could take it.
 * <p>
 * Implementation details
 * <p>
 * There is no official recommendation about way how to resubmit job according to
 * https://issues.jenkins-ci.org/browse/JENKINS-49707 moreover some of Jenkins code says it impossible.
 * <p>
 * method checks {@link SlaveComputer#getOfflineCause()} for disconnect because of EC2 instance termination
 * it returns
 * <code>
 * result = {[email protected]} "Connection was broken: java.io.IOException:
 * Unexpected termination of the channel\n\tat hudson.remoting.SynchronousCommandTransport$ReaderThread...
 * cause = {[email protected]} "java.io.IOException: Unexpected termination of the channel"
 * timestamp = 1561067177837
 * </code>
 *
 * @param computer computer
 * @param listener listener
 */
@Override
public void afterDisconnect(final SlaveComputer computer, final TaskListener listener) {
    // according to jenkins docs could be null in edge cases, check ComputerLauncher.afterDisconnect
    if (computer == null) return;

    // in some multi-thread edge cases cloud could be null for some time, just be ok with that
    final EC2FleetCloud cloud = ((EC2FleetNodeComputer) computer).getCloud();
    if (cloud == null) {
        LOGGER.warning("Edge case cloud is null for computer " + computer.getDisplayName()
                + " should be autofixed in a few minutes, if no please create issue for plugin");
        return;
    }

    final boolean unexpectedDisconnect = computer.isOffline() && computer.getOfflineCause() instanceof OfflineCause.ChannelTermination;
    if (!cloud.isDisableTaskResubmit() && unexpectedDisconnect) {
        final List<Executor> executors = computer.getExecutors();
        LOGGER.log(LOG_LEVEL, "Unexpected " + computer.getDisplayName()
                + " termination,  resubmit");

        for (Executor executor : executors) {
            if (executor.getCurrentExecutable() != null) {
                executor.interrupt(Result.ABORTED, new EC2TerminationCause(computer.getDisplayName()));

                final Queue.Executable executable = executor.getCurrentExecutable();
                // if executor is not idle
                if (executable != null) {
                    final SubTask subTask = executable.getParent();
                    final Queue.Task task = subTask.getOwnerTask();

                    List<Action> actions = new ArrayList<>();
                    if (executable instanceof Actionable) {
                        actions = ((Actionable) executable).getActions();
                    }

                    Queue.getInstance().schedule2(task, RESCHEDULE_QUIET_PERIOD_SEC, actions);
                    LOGGER.log(LOG_LEVEL, "Unexpected " + computer.getDisplayName()
                            + " termination, resubmit " + task + " with actions " + actions);
                }
            }
        }
        LOGGER.log(LOG_LEVEL, "Unexpected " + computer.getDisplayName()
                + " termination, resubmit finished");
    } else {
        LOGGER.log(LOG_LEVEL, "Unexpected " + computer.getDisplayName()
                + " termination but resubmit disabled, no actions, disableTaskResubmit: "
                + cloud.isDisableTaskResubmit() + ", offline: " + computer.isOffline()
                + ", offlineCause: " + (computer.getOfflineCause() != null ? computer.getOfflineCause().getClass() : "null"));
    }

    // call parent
    super.afterDisconnect(computer, listener);
}
 

@Nonnull
@Override
public SubTask getParent() {
    return dockerTask;
}
 

public synchronized int abortRunning(int number) throws IllegalAccessException {
        int aborted = 0;

        Computer[] computers = getJenkinsInstance().getComputers();
        for (Computer computer : computers) {
            if (isNull(computer)) {
                continue;
            }

            List<Executor> executors = computer.getExecutors();
            executors.addAll(computer.getOneOffExecutors());

            for (Executor executor : executors) {
                if (isNull(executor) || !executor.isBusy() || nonNull(executor.getCauseOfDeath()) ||
                        !getInterruptCauses(executor).isEmpty() || getInterruptStatus(executor) == Result.ABORTED) {
                    continue;
                }

                Queue.Executable executable = executor.getCurrentExecutable();
                final SubTask parent = executable.getParent();

                if (!(executable instanceof Run)) {
                    continue;
                }
                final Run executableRun = (Run) executable;

                if (!(parent instanceof Job)) {
                    continue;
                }
                final Job parentJob = (Job) parent;

                if (!parentJob.getFullName().equals(job.getFullName())) {
                    // name doesn't match
                    continue;
                }

                if (executableRun.getResult() == Result.ABORTED) {
                    // was already aborted
                    continue;
                }

                if (executableRun instanceof MatrixRun) {
                    // the whole MatrixBuild will be aborted
                    continue;
                }
//                if (executable instanceof MatrixBuild) {
//                    final MatrixBuild executable1 = (MatrixBuild) executable;
//                    executable1.doStop()
//                }

                final GitHubPRCause causeAction = (GitHubPRCause) executableRun.getCause(GitHubPRCause.class);
                if (nonNull(causeAction) && causeAction.getNumber() == number) {
                    LOGGER.info("Aborting '{}', by interrupting '{}'", executableRun, executor);
                    executor.interrupt(Result.ABORTED, new NewPRInterruptCause());
                    aborted++;
                }
            }
        }

        return aborted;
    }
 

@Override
public Label getAssignedLabel(@Nonnull SubTask task) {
    return new LabelAtom(uuid);
}