+++ /dev/null
-/*
- * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.sal.connect.netconf.listener;
-
-import javax.annotation.Nullable;
-import javax.annotation.concurrent.GuardedBy;
-
-import com.google.common.base.Preconditions;
-import com.google.common.util.concurrent.AbstractFuture;
-
-final class UncancellableFuture<V> extends AbstractFuture<V> {
- @GuardedBy("this")
- private boolean uncancellable = false;
-
- public UncancellableFuture(final boolean uncancellable) {
- this.uncancellable = uncancellable;
- }
-
- public synchronized boolean setUncancellable() {
- if (isCancelled()) {
- return false;
- }
-
- uncancellable = true;
- return true;
- }
-
- public synchronized boolean isUncancellable() {
- return uncancellable;
- }
-
- @Override
- public synchronized boolean cancel(final boolean mayInterruptIfRunning) {
- return uncancellable ? false : super.cancel(mayInterruptIfRunning);
- }
-
- @Override
- public synchronized boolean set(@Nullable final V value) {
- Preconditions.checkState(uncancellable);
- return super.set(value);
- }
-
- @Override
- protected boolean setException(final Throwable throwable) {
- Preconditions.checkState(uncancellable);
- return super.setException(throwable);
- }
-}