2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.controller.sal.connect.netconf.listener;
10 import javax.annotation.Nullable;
11 import javax.annotation.concurrent.GuardedBy;
13 import com.google.common.base.Preconditions;
14 import com.google.common.util.concurrent.AbstractFuture;
16 final class UncancellableFuture<V> extends AbstractFuture<V> {
18 private boolean uncancellable = false;
20 public UncancellableFuture(final boolean uncancellable) {
21 this.uncancellable = uncancellable;
24 public synchronized boolean setUncancellable() {
33 public synchronized boolean isUncancellable() {
38 public synchronized boolean cancel(final boolean mayInterruptIfRunning) {
39 return uncancellable ? false : super.cancel(mayInterruptIfRunning);
43 public synchronized boolean set(@Nullable final V value) {
44 Preconditions.checkState(uncancellable);
45 return super.set(value);
49 protected boolean setException(final Throwable throwable) {
50 Preconditions.checkState(uncancellable);
51 return super.setException(throwable);